SAE Partners with Pexapark for Commercial Advisory on 120MW Battery Storage Project

Pexapark, the trusted provider of reference prices and market intelligence for renewable energy supported developer SAE as commercial lead on the development of Afon Wysg 1 (AW1), a 120MW / 240MWh standalone battery energy storage system (BESS) project. 

The AW 1 project is located at the Uskmouth Sustainable Energy Park in South Wales, which is one of the UK’s largest Battery Storage sites. The AW1 project is expected to reach commercial operations in Q1 2027 and plays an important role in SAE’s strategy to own and operate clean energy infrastructure. 

By leveraging its expertise in storage market dynamics, risk allocation, and offtake negotiation for batteries, Pexapark advised SAE on the procurement and the commercial structuring of the 12-year floored revenue optimisation agreement with EDF Energy Customers Limited (EDF) in close collaboration with financial and legal advisers. With market conditions constantly evolving, Pexapark’s involvement helped SAE evaluate trade-offs across contract terms, revenue certainty, and operational flexibility. This agreement, in addition to the Capacity Market revenues secured by SAE’s projects announced in March, will streamline and guarantee further revenues for the site. 

“Battery storage is a fast-moving and complex space, and each project requires some degree of tailoring to ensure bankability and long-term value,” said Rob Hudson, Lead Energy Storage Advisor at Pexapark. “As the offtake market evolves, transaction expertise and structure-specific insights are essential to strike the right balance between revenue certainty and merchant exposure. We’re proud to support SAE as they scale their storage ambitions and take a leading role in the UK energy transition.” 

“Reaching this milestone for Afon Wysg 1 is a huge achievement for our team” said David Taaffe, Chief Operating Officer at SAE. “The support from Pexapark has been critical in helping us run a robust offtaker selection process and ensuring the commercial structure met our financing needs. Their understanding of BESS contracts and market design gave us confidence in securing the best deal possible for this project.” 

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