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OST supports first floating solar financing deal

OST Energy has announced its work with the Royal Bank of Scotland and Lightsource Renewable Energy to bring Europe’s largest floating photovoltaic solar project to financial close earlier this year.

The 6.3 Megawatt peak (MWp) array now provides a source of clean energy to water utilities company, Thames Water, on the Queen Elizabeth II reservoir west of London, and has become the first floating solar project to secure European bank financing. Thames Water will buy all energy generated by the project as part of a Power Purchase Agreement (PPA) with Lightsource.

Throughout the early stages of project planning prior to construction, OST Energy acted as technical advisor to lender RBS, providing a range of due diligence services crucial to the final investment decision.

Backed by RBS, solar experts Lightsource managed the technically demanding Queen Elizabeth II project, which saw the installation of more than 23,000 PV panels mounted on 61,720 individual floats, and the company will continue to operate and maintain the site for the lifetime of the project.

In order to minimise associated risks, OST Energy was engaged early in the project lifecycle to carry out an in-depth assessment of long-term energy yields, technology choices and EPC and O&M contracts, alongside a review of technical inputs to the financial model and planning and grid connection arrangements.

In doing so, OST’s specialist team of technical and engineering advisors was able to demonstrate the long-term commercial viability of the project ahead of the multi-million pound investment.

“Floating solar is a really exciting new technology, not just for markets with scarce land availability such as Japan, but also throughout Europe, where it can provide significant benefits for energy-intensive industrial and utility users,” said Simon Turner, Director, OST Energy. 

“This first project finance deal illustrates that the technology now has considerable backing from the banking sector, and the visible success of early projects will ultimately contribute to cost reductions that will only enhance the appeal of floating solar to developers, independent power producers and investors.”

Nick Boyle, CEO at Lightsource, said: “Over the last five years we’ve successfully completed solar installations of all shapes and sizes and the floating solar project presented a new set of challenges to overcome. Our continuing industry success relies on strong relationships with key financial institutions like RBS. Working with OST Energy has allowed us to build even further on the trust and support we have developed with these organisations.”

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Photovoltaics (PV)  •  Policy, investment and markets