About Prevailing


Prevailing offers financial-grade analysis and engineering services for renewable energy projects of all sizes, at all life cycle stages. Clients worldwide rely on us to provide accurate and timely information which they use to inform and de-risk their investment, development and operational decisions.

With many years’ experience, we are acknowledged for highly accurate energy yield analysis, applying broader know-how during provision of routine services and responding flexibly to individual client and project needs. As a result, we frequently identify risks and impacts that would otherwise have been missed and deliver them, with context, much faster than many of our competitors.


The company was founded in early 2009 by directors Matthew Colls and Ivar Rush.  Both directors remain fully involved in technical work.

Having worked in continental Europe and the Americas since inception, a local presence was a natural step.  We opened offices in Germany in 2013 and the USA in 2014, allowing us to be more attentive to our clients’ needs, and bring our services to a wider market.

Our approach

Prevailing is focused on applying industry leading, independent technical analysis.  We apply this expertise to the benefit of our clients, from a quick verbal opinion to full lender due diligence.

We maintain a high level of knowledge and capability across the team, allowing us to apply ourselves rapidly and flexibly.  Engineers are skilled across multiple disciplines, bringing efficient resolution to complex, interlinked problems.

All staff have an ongoing research goal alongside commercial work, continuously building our capabilities, and pushing new frontiers in wind and solar farm analysis.

Since our foundation in 2009 we have analysed over


projects, totalling more than


GW in