Global Wind & Solar Developer | Mainstream Renewable Power

14.6 GW total asset portfolio (gross)
12.1 GW total development pipeline (gross)
1.1 GW assets in operation (gross)
341 employees
13 offices
3.3 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 delivering its ~10 GW global development pipeline with plans to bring 5.5 GW to financial close by 2023. The company plans to grow its portfolio in existing and new markets.

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.

unrivalled leadership team

Mainstream has assembled a world-class leadership team with over 215 years of combined experience in the renewable energy sector led by its CEO, Mary Quaney and the global leadership team.

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.

Our video

Our video

explains how we develop our projects to internationally recognised best practice standards.

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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 2019 Sustainability Report

Mainstream’s 2019 Sustainability Report demonstrates the progress the company has made to drive safe, sustainable and ethical practices across its portfolio and activities during the year.   

Following the findings presented in the company’s inaugural standalone Sustainability Report published in 2018, Mainstream has achieved several more milestones in 2019, illustrating its commitment to monitoring and enhancing its environmental, social and governance performance.

Read our Sustainability Report here

Sustainability Highlights - 2019

Certified as a Great Place to Work after an independent analysis conducted by Great Place to Work® Institute Ireland

Certified as a Great Place to Work after an independent analysis conducted by Great Place to Work® Institute Ireland

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8 Lost Time Incidents in 2019 resulting in 76 lost days compared with 357 days lost in 2018

90 Community initiatives delivered

Across 13 projects sites impacting 25,000 community members and employing 120 teachers

Modern Slavery and Human Trafficking Policy implemented

Sponsored GWEC's Women in Wind Programme

CDP A- Leadership

Maintained its A- Leadership rating in the Carbon Disclosure Project’s Climate Change rankings, separately was awarded A- rating in the new CDP Supplier Engagement Report

Group Ethics and Compliance Manager Appointed and Committee in place

Avoided CO2 emissions totalling 1,390,506 tonnes

through ownership and operations of wind turbines globally

New Waste management KPIs

for offices and project sites

Zero Significant environmental events

across 5 construction sites

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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Fashion business mentee turns to making COVID-19 masks
South Africa

Fashion business mentee turns to making COVID-19 masks

Mapuche community builds ‘Ruka’ social centre with wind farm support

Mapuche community builds ‘Ruka’ social centre with wind farm...

Mainstream workshops school youth in environmental '5Rs'

Mainstream workshops school youth in environmental '5Rs'

Sponsorship of new homes in the Mekong Delta

Sponsorship of new homes in the Mekong Delta

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 2019, almost 20% 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'.

335 colleagues across 13 offices with 26 nationalities.

335 colleagues across 13 offices with 26 nationalities.

This is us.

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explore our current vacancies