Global Wind & Solar Developer | Mainstream Renewable Power

16.9 GW total asset portfolio (net)
15.5 GW development pipeline (net)
0.7 GW assets in operation (net)
500+ employees
13 offices
4.6 GW won competitive auctions
€3 billion project finance raised
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global wind and solar company

Mainstream Renewable Power is firmly on track to becoming one of the world’s first pure-play renewable energy majors. It is focused on expanding it current development portfolio of 16.9 GW with plans to bring 5.5 GW to financial close by 2023.

In 2021, Mainstream signed an equity investment deal with Aker Horizons to acquire 75% of Mainstream to accelerate the global expansion plans ahead of a planned IPO. In 2022, Mitsui invested EUR 575m in Mainstream to further accelerate growth.

unrivalled leadership team

Mainstream is led by Group CEO, Mary Quaney with a world-class Global Leadership Team combining a wealth of local knowledge and experience in the renewables sector with a passion to deliver renewables at scale.  

In addition to our Global Leadership Team, we have established regional leadership teams in APAC, Africa, Europe and LATAM. These teams bring a depth of local knowledge, well established business networks and expertise in their respective markets.


Capitalising on significant in-house experience, Mainstream implements the Global Development Standard (GDS) which is a comprehensive renewable project execution process used by all Mainstream employees. The GDS standardises all renewable project execution procedures to ensure consistency across markets, regardless of the local requirements.

Development Expertise

we develop our projects to internationally recognised best practice standards.

ongoing community engagement

The GDS ensures attention to detail around the design of the projects and meaningful engagement with local communities.

The GDS, means Mainstream can take a greenfield or partially developed project and optimise its design, deliverability, efficiency and ultimately expedite its delivery.

international standards

Our Standard is benchmarked against the IFC Environmental and Social Standards and the Equator Principles. It is in line with the UN Guiding Principles and Human Rights and the World Bank Group Environmental, Health and Safety Guidelines.

The rigorousness of Mainstream’s GDS process means the early due diligence stage filters out an unfeasible projects early on to avoid resources being used unnecessarily.

12 GW

Environment Consents obtained by Mainstream since 2010.



Our mission is to lead the global transition to renewable energy. Our strategy is to deliver best-in-class projects into operation, on time, on budget and safely in line with our unique Global Development Standard, and, underpinned by our values. Our aim is to achieve this in a way that embeds sustainability throughout our business approach, recognising our impacts and responsibilities, and creating value for our stakeholders, wider society and the environment in which we operate. Our new partnership with Aker Horizons will serve to fast-track these ambitions with shared values and approaches.


Our Commitment to Communities

Mainstream is committed to building positive relationships in the communities in which it operates. It is key to responsible and sustainable project development. Our local teams engage early and often and work closely with communities to understand local issues and deliver long-term benefits through community initiatives.

Featured initiatives

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Support for PinkDrive screening brings cancer fight to Loeriesfontein
South Africa

Support for PinkDrive screening brings cancer fight to...

New hub helping Loeriesfontein entrepreneurs do business better
South Africa

New hub helping Loeriesfontein entrepreneurs do business...

Communities developing opportunities around Soc Trang Wind Farm

Communities developing opportunities around Soc Trang Wind...

New X-ray machine ends 110km patient transfers by ambulance
South Africa

New X-ray machine ends 110km patient transfers by ambulance

Working at Mainstream

We are on a unique mission to change how the world generates its power and we're looking for people who share our vision.  Join our team and be part of our success. 

career growth

During 2021, 16.4% of our colleagues were promoted. Being part of a small global team means you are quickly exposed to multiple areas across the business.

Our culture bridges the geographical divide and creates a sense of belonging.

Diversity and Inclusion

Embracing diversity helps us make better decisions, be more innovative, and operate more effectively.

Relocation Opportunities

A number of our team now call another country 'home'.

600+ colleagues across 13 offices with 26+ nationalities.

600+ colleagues across 13 offices with 26+ nationalities.

This is us.

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