Mitsui Joins Aker Horizons as Long-Term Strategic Investor in Mainstream Renewable Power to Accelerate Growth

Mitsui & Co.,Ltd. invests EUR 575 million in Mainstream Renewable Power to accelerate growth of Mainstream's renewable energy portfolio globally,including across the Americas,Africa,Asia-Pacific and Europe

Mainstream will issue new common shares,giving Mitsui a 27.5 percent ownership interest

Mitsui to strengthen Mainstream's transformation to a renewable energy major through complementary geographic footprint,global customer network and industrial capabilities

OSLO,Norway,March 24,2022 -- Mainstream Renewable Power ("Mainstream",the "Company"),the global renewable energy company,is pleased to announce that Mitsui & Co.,Ltd. ("Mitsui") has agreed to invest EUR 575 million in Mainstream in the form of new common shares,corresponding to a 27.5 percent equity stake in the Company. Mitsui will take a long-term active role in the growth of the Company,alongside Aker Horizons,which will own 54.4 percent of Mainstream following the transaction.

This transaction values Mainstream at approximately EUR 2.1 billion on a 100 percent basis.

Accelerating Mainstream's transformation to a renewable energy major

Mitsui and Mainstream's portfolios are focused and complementary,with both companies having significant assets in operation or under development in Latin America,Africa and Asia. Mitsui will leverage its global business network across industries and its wide-ranging industrial capabilities,including global independent power producer (IPP) competence from 22 countries.

Mitsui is one of the leading Japanese general trading and investment firms,with approximately 45,000 employees in 63 countries. Mitsui's business activities span across mineral and metal resources,iron and steel,infrastructure,chemicals and energy.

Mitsui's global presence,deep experience in the power sector and global strategic alliances,coupled with Aker Horizons' industrial capabilities,will have significant strategic implications for Mainstream's transformation into a renewable energy major,including:

Accelerating the Company's geographic expansion into high-growth markets

Broadening its routes to market,particularly in the Corporate Power Purchase Agreement (PPA) sector

Accelerating the increase in its construction and operations capacity across multi-gigawatt platforms

Augmenting its energy solutions capabilities including battery storage and power trading

Spurring its growth in green ammonia and green hydrogen production,thereby rapidly advancing its Power to X offering

Delivering significant operational progress

Mainstream is a pure-play renewable energy company with a 14-year track record in developing,building and operating wind and solar generation assets across global markets,including in Latin America,Asia-Pacific and Europe. It is one of the most successful developers of gigawatt-scale renewables platforms across onshore wind,offshore wind,and solar power generation having successfully delivered 6.5 GW of assets to financial close-ready,including the Hornsea zone,the world's largest offshore wind farm in operation today.

Since Aker Horizons announced the acquisition of a 75 percent stake in Mainstream in January

2021,the company has delivered material operational progress,including:

Advancing the construction of its wholly owned 1.4 GW Andes Renovables wind and solar generation platform in Chile which is on track to be fully operational next year

Increasing its global portfolio by 5.2 GW,bringing the pipeline to 16.6 GW. Mainstream also has around 8 GW of identified opportunities,bringing the total volume of pipeline and opportunities to 25 GW

Obtaining preferred bidder status for 1.27 GW of wind and solar projects in South Africa

Launching the 1 GW Nazca Renovables platform in Chile,including the signing of a private PPA with a strategic partner

Securing an investment decision from regional authorities for the first 200 MW of the 1.4 GW Phu Cuong Soc Trang offshore wind project in Vietnam

Acquiring an initial 50 percent ownership stake in an 800 MW floating offshore wind project in Japan,along with Aker Offshore Wind

Successfully completing the planned divestment of Chilean power producer Aela Energia for USD 686 million,and progressing the divestment of one of Africa's largest independent power producers,Lekela Power,with targeted completion end of this year

Kristian Røkke,Chief Executive Officer of Aker Horizons and Chairman of Mainstream said: "Mitsui is the perfect partner for Mainstream to accelerate the company's growth to become a renewable energy major. I have known Mitsui for many years and am certain that their rich industrial heritage,global presence and like-minded approach to sustainability will bring substantial value to Mainstream. We see Mainstream as an integral part of Aker Horizons' plans to develop mega-scale green industrial hubs,drawing on synergies between Mitsui,the Aker Horizons portfolio and other strategic partners."

Mary Quaney,Group Chief Executive of Mainstream Renewable Power said: "There has never been a more critical time in the history of our planet to accelerate the global transition to renewable energy. Today's transformational announcement reinforces Mainstream's leadership position in the global race to net zero as well as enabling nations to rapidly reduce their dependence on oil and gas imports through the large-scale deployment of renewables. We are delighted to welcome Mitsui as our new strategic partner alongside Aker Horizons. Together we are fully focused on expediting our ambitious growth plans and leveraging our collective expertise and resources to transform Mainstream into a global renewable energy major this decade."

Kazumasa Nakai,Chief Operating Officer of Mitsui said: "We are delighted to participate in Mainstream jointly with Aker Horizons to boost growth and expansion of development and construction/operation activities of Mainstream,by leveraging our global business networks with customers across industries and its wide-ranged industrial capabilities,including deep expertise in the global power sector. We are convinced that the participation in Mainstream will further strengthen the strategic partnership between the Aker group and Mitsui,driving forward our renewable energy transition and greenhouse gas reduction in response to global climate change."

Global partnership to develop strong business clusters in the renewable energy sector

Mitsui,Aker Horizons and Mainstream aim to promote and develop strong business clusters in the Renewable Energy space,building on years of successful cooperation between Mitsui and the Aker group. Mitsui's investment in Mainstream will further strengthen the strategic partnership between the two industrial groups,paving the way for collaborations in new business areas such energy trading,energy management,battery storage,as well as green hydrogen and ammonia. Mitsui aims to develop business clusters of scale within renewable energy assets by leveraging integrated functions of its various business units.

Details on the transaction

The transaction will be completed as a private placement of common shares in Aker Mainstream Renewables AS,the holding company of Mainstream Renewable Power,towards Mitsui,raising EUR 575 million in gross proceeds to the Company. Following the transaction,Mitsui will hold a 27.5 percent share in Mainstream,Aker Horizons will hold 54.4 percent and Mainstream's founder,Eddie O'Connor,along with Irish retail investors hold the remaining 18.1 percent. Closing of the transaction is expected in April 2022.

Mitsui,Aker Horizons and Mainstream will continue developing Mainstream towards an initial public offering. The transaction demonstrates the ability to attract strategic capital and flexibility in IPO timing. A future cooperation with Aker Asset Management,the Aker group's asset management business area with an ambition to establish funds totalling EUR 100 billion,provides additional avenues to finance gigawatt-scale decarbonization projects.

DNB Markets,a part of DNB Bank ASA,has acted as financial advisor and Advokatfirmaet BAHR AS has acted as legal advisor to Mainstream and Aker Horizons in connection with the transaction.

IMPORTANT NOTICE

This information is considered to be inside information pursuant to the EU Market Abuse Regulation and is subject to the disclosure requirements in Regulation EU 596/2014 and the Norwegian Securities Trading Act § 5-12. This stock exchange announcement was published by Ivar Simensen,Communications,Aker Horizons on 24 March 2022 at CET 07:30.

Contact:

Ivar Simensen,Tel: +47 464 02 317,ivar.simensen@akerhorizons.com

Christian Yggeseth,Investor Relations,Tel: +47 915 10 000,christian.yggeseth@akerhorizons.com

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