Arenko has expanded its collaboration with RWE by adding software support for three UK co-located solar and battery projects totalling 150MW.
The deal doubles the number of Arenko-supported RWE sites to six and follows a 2024 framework agreement, Arenko said.
RWE is developing the projects within a DC-coupled architecture to operate as a single dispatchable unit, according to the company.
Two of the sites will feature four-hour batteries, placing them at the upper end of long-duration BESS installations in the UK.
RWE will integrate Arenko’s Nimbus software across the new assets to provide monitoring, control, optimisation and automated trading.
Sarah Standen, head of commercial asset optimisation UK at RWE, said: “We have been impressed by the level of technical collaboration and flexibility Arenko has demonstrated across our initial projects.”
She added: “As we continue to expand our UK renewable and storage portfolio, it is important to work with partners who can manage complexity and integrate securely with our internal systems.”
Arenko chief executive officer Rupert Newland said: “It has been a pleasure to work with RWE on these projects, which bring a new level of complexity by combining solar and storage within a DC-coupled design.”
He stated: “Ultimately, our goal is to enable hybrid systems that can perform on a par with standalone batteries as co-located sites grow in importance in the UK energy landscape.”
The wider UK market is seeing growing interest in hybrid projects, with the AR7a auction awarding 4.9GW of solar and much of it expected to be co-located with batteries.
Arenko said the expanded partnership strengthens its position as a software specialist for complex renewable assets in the UK.