Harmony Energy has energised its 35 MW / 70 MWh Skeeby battery energy storage system (BESS) in North Yorkshire, marking its first operational milestone following a strategic majority investment from Swiss energy utility Alpiq.
Swiss energy group Alpiq’s majority-owned developer Harmony Energy has completed the energisation of a 35 MW / 70 MWh battery energy storage system (BESS) in North Yorkshire, United Kingdom. Situated near Richmond, the Skeeby facility utilizes Tesla Megapack technology and is preparing to begin commercial dispatch to the UK National Grid. The asset is designed to store up to two hours of renewable energy, offering sufficient capability to power roughly 120,000 homes during periods of elevated demand.
This energisation represents the first operational milestone completed by Harmony Energy since Swiss power provider Alpiq acquired a 90% controlling stake in the company. Founded in the UK, Harmony Energy is a utility-scale clean energy developer specializing in battery storage, solar, and wind infrastructure across Europe. Its latest operational asset strengthens the domestic power grid by capturing surplus electricity during peak generation periods, reducing renewable curtailment, and reinforcing power availability across northern England.
Grid-scale battery infrastructure is becoming central to the UK’s broader strategy to decouple its power supply from imported fossil fuels. By balancing the supply fluctuations associated with wind and solar output, utility-scale assets like Skeeby help maintain system frequency and stabilize wholesale market volatility. The expansion of utility-scale storage enables transmission operators to manage localized bottlenecks, ensuring reliable power deliverability to commercial, industrial, and residential sectors.
For energy developers and institutional investors, the activation of the Skeeby project highlights the expanding commercial viable pathways for flexible grid infrastructure in Europe. Supported by strategic capital injections from European energy players like Alpiq, independent developers can accelerate project delivery pipelines. Furthermore, the integration of biodiversity initiatives and community infrastructure alongside energy developments reflects the rising ESG standards required to secure site permissions and long-term operating licenses.
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