First Reserve Corporation is a private equity firm specializing in leveraged buyouts and growth capital investments in the energy sector.

First Reserve was founded in 1984 and is the oldest and largest private equity fund dedicated to investments in the energy sector.

First Reserve's fundraising has benefited from the recent focus on the energy industry in the broader market.

In 2008, First Reserve advanced its renewable energy investment program with the €261 million acquisition of Gamesa Solar.

Additionally, First Reserve committed €600 million to form a European renewable energy group with the ability to deliver solar capacity of up to 400 MW in Southern Europe by 2012.