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 2020 Sustainability Report

Our third standalone sustainability report covers the period January to December 2020 and demonstrates its commitment to sustainable business practices against the backdrop of the COVID-19 pandemic.  

In 2020, Mainstream extended its development pipeline, successfully raised US$900m in capital and successfully construction managed eleven wind and solar plant in Chile and South Africa (1.5 GW) by ensuring safe practices were implemented.

Read the full report here

Sustainability Highlights - 2020

Great Place to Work Certification for second successive year

SIP and LTI Frequency Targets Achieved

134 Community initiatives delivered

delivered by our teams in Chile, South Africa, Philippines and Vietnam

Certified ISO 14001 and ISO 45001 - Ireland, Chile, South Africa and Vietnam

Diversity and Inclusion Targets in place

CDP A- Leadership

Maintained A- Leadership rating in the Carbon Disclosure Project’s Climate Change rankings for a third year running. Awarded A- rating in the new CDP Supplier Engagement Report

Ethics and Compliance Committee headed up by Catherine Hawthorne

Avoided CO2 emissions totalling 1,489,369 tonnes

through ownership and operations of wind turbines globally

Over 5 million tonnes CO2e

overall avoided from projects developed by Mainstream in 2020.

Zero Significant environmental events

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'.

537 colleagues across 13 offices with 26+ nationalities.

537 colleagues across 13 offices with 26+ nationalities.

This is us.

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