Good morning, and welcome to Hydro's Q1 2022 Presentation and Conference Call. We will start off with a presentation, followed by a Q&A session with participants in the room. Our CEO, Hilde Merete Aasheim, will start the presentation, followed by our CFO, Pål Kildemo. With that, I turn the microphone over to you, Hilde.
Thank you, Therese, and good morning and welcome from me as well. It's a pleasure to welcome you back at Vækerø, and that we finally can meet in person. Also, welcome to all of you that are following us on the conference call. I look forward to present the first quarter update today, and let me go straight to the highlights. For Q1, we report a record EBITDA of NOK 11.2 billion, while free cash flow came in at NOK 1.8 billion, mainly driven by working capital build during the quarter on higher prices. Through the quarter, we experienced tight markets across the value chain, with record high prices in aluminum metal and energy. On the back of this, we have achieved record result in aluminum metal, energy, and extrusions. I'm also happy to report significant progress on both pillars in our 2025 strategy.
Within the first pillar, strengthening our position in low-carbon aluminum, we are excited to report that the demand for greener products continue to be strong, increasing actually 83% year-over-year. I'm also pleased to report that we have reached a very important milestone on our path to zero carbon products this quarter through producing the first ton of near zero carbon aluminum at one of our recyclers in Clervaux in Luxembourg, using 100% post-consumer scrap. Talking about recycling, I'm also very excited that we last Friday announced a tender offer of 100% of the Polish recycler Alumetal, which combined with existing ongoing projects, will contribute to reach our target of doubling our use of post-consumer scrap by 2025 and reaching our targeted EBITDA uplift from recycling.
Within the second pillar, I'm also pleased to announce that we have reached important milestones towards contract certainty for the first gigawatt of ambition in Hydro Rein, and are now working to grow the portfolio beyond that. Slide three, please. In addition to doubling our EBITDA since the same quarter last year, I'm pleased to report a continued strong increase in our 12 months rolling ROACE from around 5% in Q1 2021 to almost 23% in Q1 this year. Well above our overall target of reaching a 10% ROACE over the cycle. Extrusion volumes increased as a result of increased demand in the market, particularly from the building and construction and the industrial markets.
On the cost side, we continue to see escalating raw material costs, as all energy carriers are increasing due to tightening energy market, in addition to also increasing cost in carbon and in caustic. Our drive for continuous improvement is just as strong in good markets as in weaker markets. Following a year of over-delivery in 2021, we continue to target further improvements of NOK 700 million in 2022. Year to date, we are on track to deliver on our NOK 7 billion target by 2022, with particularly procurement and fixed cost initiatives progressing very well compared to target. In addition to our improvement programs, we also have targeted NOK 2.5 billion in commercial improvements, including customer-driven incremental growth, performance above average margin, and contribution from greener products. Here extrusion is contributing well this quarter on the back of improvements in gross margin.
Before I continue, let me comment on how we have responded to the Russian invasion in Ukraine. Hydro has had a consistent message since early. We condemn the Russian invasion of Ukraine, and we support the sanctions which have been put in place by the European Union and the international community. Hydro has no employees, operations, or investment in Russia, nor in Ukraine. We do have trade with Russia. Since the invasion, we have been very clear that we will not enter into new contracts linked to Russian counterparts. We have already reduced contractual commitments and are in the process of further reducing the remaining commitments for 2022. Since we have no contracts with companies subject to international sanctions, there is no legal basis for terminating the contracts.
Lastly, I would like to underline that existing contracts are limited in number, scope, and time. Around 400 Ukrainian citizens are working for Hydro in Poland. I'm touched to see how our organization in Poland has mobilized to help their families to unite and offering them support in this tragic situation. In addition, a fundraising initiative was started by our European Works Council, where we together have donated NOK 10 million to support UNICEF in the humanitarian efforts. Let me then turn to the macro situation and the current business environment. I will start with commenting on China and then the effect of the Russian invasion of Ukraine. The China Purchasing Managers' Index has been on a downward trend since the post-pandemic high, and was below 50 in March, indicating a contraction in production.
This was impacted by high raw material prices, softer domestic demand, and the current most significant downside risk, the ongoing Omicron outbreak and China's policy response. The firm commitment to eliminate COVID-19 we have seen in Shanghai and other big cities being locked down, negatively impacting consumer spending. On the back of this, the GDP forecast for China has been revised slightly downwards from December, mainly due to COVID-19 outbreaks. On the chart to the right, we show the revised GDP forecast for Europe, which has been impacted especially hard by the Russian invasion of Ukraine, with a fall in expected GDP for 2022 and 2023 of 1.2% and 0.4% respectively. The actual outcome is highly dependent on the development of the Russian invasion of Ukraine.
If you then sum it all up and look at the world as a whole, the world was on a recovery path after the pandemic. IHS forecasted in December, suggested a steady growth across most major economies. However, since December, we have got inflation in America, we have COVID outbreaks in China, the energy crisis, and the Russian invasion in Ukraine. These risks has led to that, IHS to revise its global GDP forecast for 2022 substantially down from December 2021 from 4.3% to 3.2%. Let me then comment on our specific markets and start with alumina.
During the first quarter of 2022, PAX rallied to a 3.5-year high of $533 per ton, driven by supply fears because of the Russian invasion of Ukraine and the impact of sanctions on alumina trade flows. Despite much volatility in the quarter, price averaged $421 per ton, a 2% increase from previous quarter. The shutdown of the Nikolaev refinery in Ukraine, combined with the Australian ban on alumina export to Russia, has cut Russia's annual alumina supply by more than 3 million tons. Russia may be able to source its missing alumina needs from China or possibly India, Indonesia, Vietnam to keep its production unchanged. Australia's alumina export ban to Russia increased alumina availability in the Pacific, which drove the PAX below $400 per ton in mid-April.
Based on CRU data, higher energy prices and raw material prices lifted alumina refinery cost in Q1 2022 up in the range from $30 per ton to as much as $100 per ton compared to Q1 2021 and Q4 2021. As a result, European refineries have seen substantial cost increases, and some are loss-making at current alumina prices. Alumina production in China is increasing since mandated curtailments ahead of the Beijing Olympic Games were lifted in late February. At the same time, new capacity of about 4 to 5 million tons per year is being commissioned. Currently, the alumina prices are still supported by the Chinese COVID restrictions, causing logistical challenges. Let me turn to the supply demand situation in the aluminum market and the global balance.
On the left side of this slide, we show the supply and demand growth estimates. In China, demand is weakening as the property sector responsible for 30% of total domestic aluminum demand is struggling with high debt and low building activity. However, the central government has put in place financial support measures which could offer some relief going forward. At the same time, the car industry is struggling with under supply of semiconductors. On the top of that, recent lockdowns have prevented downstream industries from operating at optimal levels, putting further pressure on demand. Demand in world ex-China is still holding up reasonably. However, the risk of recession is increasing. Production outside China is expected to see limited growth, with restarts in Canada and Brazil offset by production cuts in Europe.
In addition, there is a risk of curtailments of Russian capacity due to sanctions which could significantly impact the balances. This result in an estimated deficit both in the world ex-China as well as in China for 2022, with a deficit in China coming down compared to what we talked about in 2021 due to weaker demand and production ramping up. As mentioned, production in Europe have decreased, and so far approximately 700,000 tons of European production has been curtailed due to high energy prices. With another 1.1 million tons, which is illustrated here, at high and medium risk, potentially increasing the deficit further.
2.5 million tons are at low risk in Europe due to hedged power positions, mainly in Norway and Iceland, which includes our Norwegian smelters. When it comes to prices, we have experienced high volatility in the start of 2022. All-in prices reached a new all-time high in Q1 as LME and premiums climbed to unseen levels. The record increase was driven by the Russian invasion of Ukraine, as Russia is the largest exporter of primary aluminum globally. LME increased to above $4,000, which we haven't seen for many years, on the fear of Russian sanctions. However, LME is now trading at $3,000, as Russian metal is still in the market and global demand growth expectations have come down.
Premium also reached all-time high on the back of three drivers, the European production cuts, the risk of less Russian metal coming to Europe, and the substantial disruption in the freight market. Premiums are still at escalated levels, including value-added premiums such as extrusion ingots billet premium, which is one of the reason for our increasing result in metal market and in extrusion, as the recycling margin has significantly increased on the back of these high premiums. Now moving to extrusion, the extrusion area. Extrusion demand has continued to grow in Q1 in both Europe and North America, much driven by continuous strong momentum in the industrial segment and building and construction, with particular residential building and construction being strong, partly supported by refurbishing and a renovation wave.
Automotive demand is still impacted by supply chain issues and semiconductor shortage, partly amplified also by the Russian invasion of Ukraine. Demand is expected to maintain momentum in Q2 with fairly similar growth rates in as in Q1 for Europe and North America. However, the figures for second half is dependent on a normalization of the supply chains for automotive, which is still very uncertain. Let me comment on the challenging energy situation in Europe and the fear of disruption to gas flows. Energy prices continue at elevated levels in the European market. Energy prices have more or less stabilized at a high level, but they're still highly responsive to geopolitical development. Gazprom stopping to deliver gas to Poland is an example. EU lawmakers have responded to the situation with an ambitious plan.
By the end of this year, they intend to reduce Russian gas imports by two-thirds. The enablers illustrated to the right on the slide with increased energy imports, energy saving, but also solar and wind power. In the longer term, independence from Russian gas will be ensured by increasing the production and consumption of renewable energy and hydrogen. For now and for Hydro, this represent both risks and opportunities. On the risk side, we are exposed to gas prices and supply at our casthouses and at the recyclers in aluminum metal and in extrusions. For aluminum metal, we have a hedge ratio of around 70% for 2022 and around 40% in 2023. Whereas for extrusion, this is around 70% in 2022 and around 65% in 2023.
For our primary aluminum smelters, we are close to fully covered on power until 2030 and also have a good coverage into 2040. For our smelters in Slovakia, we are only covered for the rest of 2022 and run the risk of curtailment if we are not able to secure competitive power for 2023. On the opportunity side, the increased need for renewable energy and hydrogen strengthen the potential for our growth companies, Hydro Rein and Hydro Havrand. Let me now continue to talk about our positioning going forward. We continue to make important progress on our strategic agenda towards 2025, continuing to strengthen our position in low carbon aluminum, while also now maturing growth opportunities in the new energy area. Let me start by saying it's very encouraging to see the pull in the market for our low carbon aluminum products.
From 2020 to 2021, sales of our low carbon products, CIRCAL and Reduxa, doubled a trend that we have seen continuing into 2022. CIRCAL sales are sold out and up by over 60%, whereas Reduxa is up nearly 90% compared to the same time last year. In fact, sales of Reduxa in this first quarter alone amounts to nearly half the volume of total sales in 2020, twenty twenty-one. If you don't recall what Reduxa is, it's aluminum that is produced with less than 4 kilo of CO2 per kilo produced aluminum. The world average is 16.7. We are excited to see that the market is responding so strongly to these products, and a clear contribution on our bottom line from the greener premium that we achieve on these products.
Going forward, we will continue to focus on collaborating with customers to find and develop innovative solutions for sustainable applications on our low carbon aluminum. Last year, Hydro launched an eco-design concept aiming to make products with increased functionality, more recyclable, and with a smaller environmental footprint. In collaboration with our customers, we're able to introduce new products and applications of aluminum by activating our in-house competence. One recent example is Flokk's new conference chair, HÅG SoFi, which was developed in collaboration with our R&D team using Hydro CIRCAL. Another example of a customer collaboration using Hydro's low carbon brand is a system manufacturer for photovoltaic panels. The market for wind, solar and solar power installation is set to grow rapidly.
Aluminum being highly corrosion and weather resistant, as well as the low embedded carbon footprint of Hydro's metal, making choosing Reduxa or CIRCAL an attractive choice for many of our customers. Those of you who followed our Capital Markets Day in December will recall that we launched an updated climate ambition with three technology pathways towards near zero aluminum, near zero carbon aluminum. Reducing emissions from our aluminum smelter is a key part of our delivering on our long-term climate ambition. Our studies have shown that capturing CO2 directly from the off-gas can eliminate most of the direct emissions from our existing smelters. The last emissions can be removed through a direct air capture system.
Searching for the best fit for purpose solution, we have assessed more than 50 capture technologies, and found that only very few will be applicable for aluminum production due to the low CO2 concentration in our off-gases. Most carbon capture technologies have been developed for capturing off-gas from fossil power production and industries with higher concentration of CO2. Two months ago, we invested $20 million in a U.S. company called Verdox. Verdox is currently commercializing a carbon removal technology which can both capture this low concentration of CO2 and also CO2 directly from the air. We are very excited about this technology. Verdox technology is really a leap forward for carbon capture technology in the aluminum industry, being fully electric and expected to be highly energy efficient.
Today, we can report that we have started the testing, and so far results are very promising. We should note that we are at an early stage, and we are looking forward to report progress going forward. The second path towards zero is our own HalZero technology, which will enable future greenfield smelters to run a fully decarbonized process for primary aluminum. Lab scale development here are running as planned, and we will regularly update also on progress being made on this, on this technology. It's also exciting to see that the products are not only the ambition is spiking interest in the market and opening new possibilities both for Hydro and for potential customers. One example is this carmaker, Swedish carmaker Polestar, which has vowed to create a climate neutral car by 2030.
Hydro is joining Polestar as a material partner to explore how aluminum can contribute to realizing the Polestar 0 project. Our collaboration with Polestar is an example of how we can combine our capacity, capabilities, and competence to drive development and sales, uniting sustainability with profitability. The third and quickest pathway to near zero is through recycling. Today, I'm excited to report that we have produced our first volumes of Hydro CIRCAL 100R, a product based on 100% post-consumer scrap with a footprint of less than 0.5 kilo of CO2 per kilo produced aluminum. We have the gas left in the cast house, and that we are working on now to see if we can replace with hydrogen. That will make it zero.
This has been done at our recycler plant in Clervaux in Luxembourg and demonstrate our capability to turn more post-consumer scrap into high quality metal. We see now an increasing interest for products like this in the marketplace, and we are right now discussing with several interested customers for the first commercial application. Recycling is an important part of our value proposition. At the Capital Markets Day in 2020, we launched our recycling strategy for 2025. Our target is to double our use of post-consumer scrap, bringing more aluminum back in the loop, getting our hot metal costs down, and produce a good quality product, a low carbon aluminum. On Friday, we announced a tender offer to acquire 100% of Polish recycler Alumetal.
If we are successful, this will be a big step forward in terms of meeting our target of doubling our use of post-consumer scrap. This company sources roughly 150,000 tons of post-consumer scrap per year with a large network of scrap suppliers. The company has considerable experience in sorting various qualities of scrap and is one of the market leaders in the scrap-based foundry alloy market. An acquisition of Alumetal will add expertise and capabilities, which in turn will strengthen our capabilities in Hydro throughout the value chain. Let's take a closer look at Alumetal. The company is the second largest producer of casting aluminum alloys in Europe with an 8.5% market share.
Alumetal has a production capacity of 275,000 tons per year with three plants in Poland and one in Hungary, complementing Hydro's current footprint. Alumetal sells its product primarily within Europe and to the automotive sector, which represent 90% of their customer base. With the transaction, Hydro will strengthen its recycling position and widen its product offering on the low carbon and scrap-based foundry alloy market. When the 2025 recycling strategy was launched back in 2020, we set two important ambitions, to double the recycling of post-consumer scrap and to increase annual recycling EBITDA from the recycling activity by a range of NOK 700 million to NOK 1.1 billion by 2025. Since then, a number of highly profitable recycling projects have been announced in both aluminum metal and extrusions.
The projects are estimated to provide 90,000 tons of additional PCS usage and an EBITDA uplift of NOK 750 million. The acquisition of Alumetal is expected to further increase PCS usage by 150,000 tons, enabling us to meet our ambition of doubling PCS usage by 2025. The acquisition will provide an additional EBITDA uplift of NOK 450 million per year. This uplift, together with our announced project pipeline, will bring us to an EBITDA of NOK 2.9 billion from the recycling activity in Hydro, which more than exceed our 2025 EBITDA ambition. Let me then turn to the second pillar of the Hydro 2025 strategy, growth in new energy solutions.
From the start of the establishment of Hydro Rein in Q1 2021, the Rein organization have focused on securing project rights, developing projects, undertaking construction, and even farming down to reallocate capital, all with the objective to develop a profitable business and deliver renewable power for our own, to our own operations as well as for third party. During the first quarter of 2022, we have made significant progress across Rein's value chain, including reaching this important milestone towards contract certainty for the first gigawatt, while also working with the next gigawatt. If we start with Storsjöan, which is the power project in Sweden, this is a project which we acquired 49% of in June 2021, with a plan to partly farm down following the development phase.
In December, we made the final investment decision, and in April, we agreed to sell 24% to MEAG, an asset manager for Munich Re and ERGO. The transaction with MEAG result in around 40% return for Hydro, for Hydro Energy on invested capital based on the SPA. Based on current expectation, the return should more than double following the construction phase. This is an example of how we can optimize capital allocation and the return of our investment while retaining a significant stake in the project consistent with our long-term ownership strategy. The transaction with Storsjöan is subject to customary approvals from competition authorities and is expected to be completed later this year. What is also interesting is that yesterday we also announced that we have sold our first external PPA based on the power from the Storsjöan to Telenor.
This demonstrates Hydro Rein and Hydro Energy's ability to offer renewable power solutions not only to internal customers, but to external customers. I'm equally pleased to announce that we have also signed the first PPA in Brazil. Based on our partnership with Atlas Renewable Energy, we will develop and build a 435-MW solar plant, solar power plant located in Minas Gerais named Boa Sorte. Construction is planned to start in Q4 2022 and operations in Q4 2023. Total investments are estimated to $320 million on a 100% basis, and Hydro Rein will have 33.3% ownership in the joint venture.
Boa Sorte will supply Albras with approximately 93 MW annually in the period from 2025 to 2044, representing 90% of the power production at Boa Sorte and covering 12% of Albras' power consumption. The PPA is denominated in US dollar. We have also a second project in Brazil, Mendubim, which is at late stage development with PPA being finalized. Here, Hydro Rein has partnered up with Scatec and Equinor to develop a 530 MW solar project in Rio Grande do Norte. Power from this project will be sold to Alunorte to meet base power demand as well as supporting the transition from coal to electricity. Total investments from Mendubim are estimated at $390 million, and Hydro will own 33% of the joint venture.
Both these transactions are subject to and awaiting clearance by the Brazilian competition authorities. All of the development so far during 2022 are important steps for Rein on the path to an external capital raise, which we still aim to undertake during 2022, but which will be subject to the IPO market being open and available. Finally, let me report on our progress within the battery business unit. A month ago, we announced a partnership with Elkem and Altor to accelerate the growth of Vianode, a Norwegian producer of sustainable battery materials in an area with very interesting growth prospects. Hydro's ownership in this company will be 30%. Vianode is also a good fit for our strategic direction of profitable growth in renewable energy, hydrogen, and batteries. Vianode is based on technology advancements and experience developed over several years by Elkem.
Hydro, we contribute with our industry scaling capabilities, including project execution for large industrial projects. Our material and process competence and experience, we will contribute with, as well as our track record from serving the car OEM segments for decades. This Vianode synthetic graphite product will be produced with up to 90% lower CO2 emissions than today's standard material, where 95% of this material today is produced in China. This makes Vianode a good fit for the ambitions of leading battery cell and automotive manufacturers. Total investment for Vianode in the first phase plant and preparation for a potential full-scale plant are estimated to approximately 2 billion NOK on a 100%. An investment decision for the first phase plant is expected before the summer, pending clarification related to framework conditions, including support mechanism.
Also here, the transaction is subject to formal approval by the parties and regulatory approval. Lastly, our joint Hydrovolt battery recycling facility, Hydrovolt, will start commercial production this month following a period of successful test production. Hydrovolt is one of the most technologically advanced battery recycling facilities in the world and the largest in Europe. It has the capacity to process more than 8,000 tons of modules from car batteries each year. The company is well-placed for expanding its value chain and preparing for international growth. My last slide is about sustainability. Sustainability is a key driver for our positioning going forward. Our ambition in sustainability are as important as our target to increase profitability.
At the Capital Markets Day last year, we presented concrete pathways towards net zero products, net zero company by 2050 or earlier, and an ambition to contribute to a net zero society. In addition to our climate targets, we strengthen our ambitions to protect biodiversity and reduce our environmental footprint, including reducing waste from our processes. Just as importantly, an ambition to improve the lives and livelihoods where we operate. I've already commented on our pathway to carbon free aluminum production through recycling, CCS, and our HalZero process. Let me also confirm that the fuel switch project in Alunorte is going according to plan. This is an important enabler for us to reach our target of 30% reduction of our CO2 footprint by 2030. In terms of environment, we have several initiatives to reduce waste from our processes.
Let me highlight one particular exciting project in the first quarter. In April, Hydro signed an MOU with a Brazilian tech company, Wave Aluminium, where we will now test in a pilot plant a new pioneering technology that can convert the red mud from the alumina refining to recoverable and saleable minerals. If successful, this could significantly reduce the need for red mud deposits going forward. This add to what we already have done in the dry backfill in the mine in order to reduce what we leave behind, and it will also reduce cost and CapEx going forward to protect this red mud to produce in a responsible way. This is a very exciting project, and I look forward to give status, more status on this in next updates.
With that, it's time to give the word to you, Pål, our CFO, Pål Kildemo, for the financial update.
Thank you, Hilde, and good morning from me as well. Nice to see several of you physically again. Let's move over to the results and the quarterly EBITDA bridge. Adjusted EBITDA for the first quarter was NOK 11.2 billion. This is up from NOK 9 billion in the last quarter. On the positive side, we have continued to experience higher all-in metal prices within aluminum metal. This quarter, it is driven by a 39% increase in realized premiums, resulting in a NOK 700 million uplift. The change in realized LME and realized alumina prices had limited impact compared to the previous quarter. We also have a significant uplift of NOK 1.6 billion from our mid and downstream results, which is driven primarily by higher premium, which expands our recycling margins in addition to seasonally higher volumes.
Also in energy, we experienced higher price levels and volumes, which resulted in a NOK 600 million increase, and the gain from price area differences was largely stable compared to the fourth quarter. Lastly, on the positive side, we have around NOK 800 million increase from FX, other, and eliminations, and the main driver is positive eliminations, going from around -NOK 500 million in the fourth quarter to NOK 200 million positive in the first quarter.
This is mainly driven by lower margins in bauxite and alumina, and in addition, there are several other larger one-off items, like for example, the bauxite and alumina insurance payment and extrusion acid scrapping costs, both in the fourth quarter, which net each other out to a large extent. All these positive developments are partly offset by higher raw material costs across the business area and lower upstream production volumes, resulting in a total negative impact of around NOK 1.5 billion. We will dive into these details as we go through each of the specific business areas. If we then move to the key financials for the quarter, year-over-year revenues increased by 46% to NOK 46.6 billion. Compared to the previous quarter, revenues remained largely stable. Compared to last year, the developments are mainly related to higher realized prices.
Adjusted EBITDA came in at NOK 111.2 billion, which for this quarter excluded NOK 2.9 billion, bringing the reported EBITDA to NOK 8.2 billion. Adjusted items for the quarter are largely driven by unrealized mark-to-market effects on contracts, with around NOK 4.4 billion related to LME-related sales contracts impacted by the strong increase in prices, partly offset by NOK 1.4 billion on purchase contracts for power and raw materials impacted by the higher energy prices and the higher raw material cost. Moving on, we had adjusted depreciation and amortization of around NOK 2 billion in the quarter, resulting in adjusted EBIT amounting to NOK 9.2 billion.
Financial income of NOK 2.2 billion for the first quarter includes a net foreign exchange gain of around NOK 2.4 billion, primarily reflecting a gain from stronger NOK versus euro, affecting the embedded derivatives in Norwegian power contracts and other liabilities denominated in euro. Our tax expense for the quarter amounted to NOK 2 billion, or about 24% of income before tax. The tax rate mainly reflects a high proportion of our income in Norway, where the tax rate is 22%, and the recognition of a favorable decision in a tax dispute, which is partly offset by higher power surtax.
Overall, this provides a net income from continuing operations of NOK 6.4 billion, which is up from NOK 1.9 billion in the same quarter last year, but down from NOK 8.5 billion in the fourth quarter, mainly reflecting the unrealized movements on LME contracts. Adjusted net income was positive NOK 6.8 billion, compared to NOK 2.4 billion last year in Q1, and NOK 5.8 billion in the fourth quarter. This resulted in the adjusted earnings per share of 3.11 NOK for the quarter, which is up from 1.15 NOK in Q1 last year and 2.57 NOK in the fourth quarter. If we then move over to the business areas and start with bauxite and alumina, then adjusted EBITDA increased from NOK 1 billion in Q1 2021 to NOK 1.3 billion in Q1 2022.
Here we saw 37% higher realized alumina sale prices and around NOK 300 million lower expenses related to the decommissioned crane, which impacted the results positively. This was partly offset by higher raw material prices, mainly caustic and energy, increasing costs by around NOK 1 billion. Around 50% of that comes from higher energy costs. This lifted our implied alumina cost from $23 to 327 per ton. Production at Alunorte was slightly below nameplate capacity at 1.5 million tons for the quarter, and this is driven by planned maintenance. If we compare these results to the fourth quarter of 2021, then adjusted EBITDA decreased by NOK 1.2 billion.
The non-recurrence of the 500 million insurance payment we received in Q4, combined with higher raw material costs and lower sales volumes, were the factors behind the decreased results. Compared to the fourth quarter, raw material costs increased by around NOK 400 million. This is NOK 100 to 200 million higher than we guided, and that is driven by the stronger energy prices that have occurred since our Q4 reporting, mainly fuel oil prices. If we look into Q2, Alunorte production is expected to continue at around nameplate capacity. In addition, compared to the first quarter, current raw material prices based on market prices indicates an increase of around NOK 400-NOK 500 million. This comes both from caustic, coal, but mainly from even higher fuel oil prices.
If we move on to aluminum metal, this quarter, adjusted EBITDA increased from NOK 1.8 billion in Q1 2021 to NOK 4.8 billion. The record results were mainly driven by higher all-in metal prices, positive currency effects, but partly offset by higher raw material and fixed cost. Compared to the fourth quarter of 2021, adjusted EBITDA for aluminum metal increased by NOK 89 million, driven by higher realized premiums and positive currency effects. This was partly offset by higher raw material costs, especially alumina and carbon, amounting to around NOK 600 million, in line with our guidance of NOK 650 million from last quarter.
The first quarter was also impacted negatively by lower primary production, driven by the one line outage at our Albras smelter, which is currently ramping up. This has also resulted in around NOK 100 million from sale of power in the Brazilian spot market negatively, as power prices are currently low in Brazil. The outage of the Albras smelter, combined with lower liquid sales than expected, resulted in a lower open exposure to market prices for the first quarter than what we guided on. Or the lower exposure was 28% compared to our guidance of 39%. This was more or less offset by higher premiums than expected due to the sharp increase in standard ingot premiums throughout the first quarter.
In addition, due to our metal sales profiles, it is also important to remember that the CO2 compensation for the first quarter includes one month based on 2020 prices and two months based on 2021 prices. For Q2, 67% of primary production is priced at $3,155 per ton, while on the premium side, we have 59% of premiums booked at $1,093. While in total, Q2 realized premium is expected to be in the range of $850 to 900 per ton. Compared to the first quarter, we also expect increased raw material prices in the second quarter. If we use expectations based on current market prices, this accounts for around NOK 800 million, and this is mainly driven by carbon and alumina.
Finally, on the eighth of April, our Albras smelter in Brazil restarted the production line that experienced a power disruption failure in February, and we expect Albras to resume full normal operations in the fourth quarter of this year. For metal markets, then this quarter we delivered an adjusted EBITDA of NOK 525 million compared to NOK 78 million in Q1 last year. The improvement this quarter is mainly driven by our strategic growth area, recycling, where we saw a high demand in the extrusion ingot market, resulting in increased premiums relative to the first quarter last year. In addition, we have higher results from sourcing and trading activities, but these were offset by negative inventory valuation effects.
If we exclude the currency and inventory valuation effects, the result for the quarter was NOK 630 million, and this is four times higher than we had in the first quarter in 2021. Looking into the next quarter, remember that trading results and currency effects in metal markets are by nature volatile. However, on the back of the stronger premiums we are seeing in the market now, you should expect continued strong contributions from our recycling operations. Last quarter, we updated the annual guidance on adjusted EBITDA, and based on our current record high premiums, we expect an average quarterly EBITDA of between NOK 300 million-NOK 400 million, but with seasonally higher results in Q1 and Q2, as we see in this quarter. If premiums were to come down again, this figure would also decrease.
If we move to Extrusions, adjusted EBITDA increased from NOK 1.7 billion in Q1 2021 to NOK 2.3 billion in this quarter. The main result driver here is also the higher results in the integrated recycling operations, also here driven by higher sales premiums. As you can see from the chart to the right here, extrusion billet production is based on a large internal recycling system, where the majority is based on process scrap, some on primary ingot for sweetening, but also a sizable and increasing part on post-consumer scrap in line with our recycling ambitions. In addition to recycling margins, higher sales volumes and increased margins were partly offset by increased variable costs, mainly energy costs, and also fixed costs as we ramp up production again.
Relative to Q4 2021, the adjusted EBITDA was higher due to seasonally higher sales volumes, margins, and also higher recycling results. This was partly offset by higher fixed and variable costs. In addition, you'll remember that in our fourth quarter, we had a negative effect of scrapping of assets totaling NOK 333 million. If we then look into the second quarter, we expect net added value margins to continue to increase, driven by higher sales prices and remelt earnings. However, this is expected to be largely offset by higher raw material costs, including energy and continued higher fixed cost. The higher fixed cost also includes an estimated NOK 200 million in extraordinary bonuses to all employees of $1,000 per employee. This is a bonus given to all employees in Hydro following their strong contributions through the two-year COVID period.
However, Extrusions will account for the majority of these, given their high manning intensity. In addition, we would like to stress that the supply chain volatility remains and that there is an increased uncertainty due to the Russian invasion of Ukraine. We end the business area walkthroughs with Energy, where the record high power prices and large gain from price area differences increased adjusted EBITDA for Energy from NOK 841 million to a record high NOK 2.2 billion. The significant gain from price area differences amounted to NOK 790 million in the first quarter. Compared to the previous quarter, the adjusted EBITDA increased by NOK 513 million, due to higher power production and higher power prices.
The gain from price area differences stayed largely stable, as lower volumes exposed was offset by a larger spread of around 1,300 NOK per MW hour in the quarter. If we look into Q2, the price and volume uncertainty are always large, and production and prices will depend on current, quite extreme hydrological conditions. We are currently seeing a very weak balance in the South Norwegian areas where we produce, and we expect lower production in Q2 relative to Q1, and we could even end up with negative spot sales in the second quarter.
As of yesterday, the quarter-to-date difference between mid Norway prices NO3 and South West Norway prices NO2 were at NOK 1,350 per MW hour compared to NOK 1,297 for the fourth quarter, implying that the high earnings from price area differences will continue at a high level into Q2. Let's then dive into developments in our net cash position. Based on the starting point of NOK 3.2 billion in net cash from Q4, our overall net position increased by NOK 1.9 billion quarter-on-quarter to NOK 5.1 billion. This is based on the following. In Q1, we generated NOK 11.2 billion in adjusted EBITDA, but we had a net operating capital increase of NOK 6.1 billion.
This is a large build, and we can try and break it down as follows. Firstly, we have around NOK 1.5 billion, which is related to normal seasonality. We build operating capital in the first quarter as volumes increase, and then we free that up towards the end of the year. Around NOK 3.5 billion of this amount is related to prices, LME, premiums, and FX impacts value of inventories and receivables. Then around NOK 0.8 billion is due to actual inventory build non-price adjusted, which is mainly higher ingot trading stocks. The remaining is inventory eliminations from internal trade and other minor pluses and minuses which net each other out.
If we look at the full year estimate for operating capital, we expect all else equal that the NOK build will be related to price and effect, with the only sizable non-market-related build being related to receivables on CO2 compensation. Other operating cash flow adjustments amounted to negative NOK 2.1 billion, driven mainly by tax expenses and bonus payments. Net investments were NOK 1.2 billion for the quarter. As a result, we generated free cash flow from operations of positive NOK 1.8 billion in the first quarter. In addition, we had a slight positive NOK 0.1 billion in other, and this is mainly reflected by FX effects and new leases. If we move on to adjusted net debt, we start by adjusting for the NOK 9.7 billion in collateral in Q1.
This is mainly related to strategic and operational hedging positions, which has increased by NOK 4.4 billion from last quarter on the very strong prices we experienced throughout Q1. The next adjustment is NOK 4.2 billion, and this reflects, among else, asset retirement obligations, as well as assets in Hydro's captive insurance company that are not available to service Hydro debt and is stable from last quarter. This quarter, we have a net pension asset of NOK 1 billion, which has increased from a net pension liability last quarter after a remeasurement gain of around NOK 2 billion pre-tax driven by the higher discount rate in Norway and Germany. With this adjustment, we end up with an adjusted net debt position of NOK 7.7 billion at the end of Q1, which is up from NOK 7 billion at the end of Q4.
Let's spend some words on strategic hedging and development in the last quarter. The year to date has experienced significant LME price volatility. Prices have moved more than $1,000 year to date, and daily price movements have exceeded several hundred dollars. The Russian invasion of Ukraine has been the main contributor here on top of an already tight market. Potential sanctions on aluminum from Russia or operational disruptions represents a significant upside on LME prices, and we have seen third-party market analysts expecting prices above $5,000 per ton. On the other side, we now see increased uncertainty, we see fears of recession, and we also experience supply chain issues which could reduce demand going forward.
In light of this continued uncertainty, we continue with our strategy of remaining largely open on the upside while securing a certain percentage of our portfolio for the downside at what we see today to be historically very strong margins. Since last quarter, we also took some extra measures to safeguard liquidity as we are exposed to collateral on a large part of operational and strategic hedging, and we did experience extreme movements in other exchange traded commodities over the quarter. These mitigating measures included rolling off parts of May and April hedges and rolling on 80,000 tons of 2024 hedges as price movements tends to be higher in the front of the curve than the back. In addition, we have purchased 75,000 tons of call options in the second half of 2022 and full year of 2023.
Through the first quarter, we have also strengthened our liquidity in light of the extreme price volatility just mentioned. The extreme price volatility has resulted in high price-driven operating capital build and also the collateral movements just mentioned. We do this to ensure that we are robust to deliver on our strategic ambitions despite the current high market volatility. Last week, we signed a short-term revolving credit facility of NOK 1.3 billion available on short-term basis with a sub-facility swingline with our core banks. On liquidity, I was also pleased to announce that the recent NOK 200 million loan that we have signed to finance the Alunorte fuel switch project had the pricing linked to the performance of our greenhouse gas emission reduction target, and that we also secured that for our interest rate swap, which is the first of its kind in the Brazilian market.
This is in line with our sustainable financing framework, where we work hard and aim to lower our cost of capital through increased sustainable financing. On that note, I would like to give the word back to you, Hilde.
Thank you, Pål. Let me finalize the presentation today by just summing up our priorities going forward. In Hydro, health and safety is always first on our agenda. Going forward now, we will manage the geopolitical and market uncertainty in the best possible way, also growing volume and margin in volatile markets, with particular focus on the greener offering that we have a good traction on already. Which is close to my heart, is also to continue the continuous improvement, let's say, culture in Hydro, delivering on our improvement efforts, delivering on the commercial ambitions, and then obviously also to continue to execute on the Hydro 2025 strategy, which is about strengthening our position in low carbon aluminum and then expanding and diversify in new energy areas. With that, I say thank you.
I look forward to have you back reporting on progress during the year. Line, I guess we open up for Q&A.
Yes. We'll open up for Q&A from the people in the room. Okay, then, just to remind everyone, there will be a conference call also later today at 11:00 that you can ask questions. Thank you.
Yes. Thank you all for participating. We will now have media interviews with Hilde and Pål here down on the floor. Thank you very much.