A US energy storage startup, Base Power, has begun offering its substantial home battery systems to residents in Illinois, marking its expansion into the territory managed by PJM Interconnection. PJM is the largest grid operator in the United States by area and has recently faced considerable challenges in managing the escalating demand for electricity, particularly from a proliferation of new data centres.
This strategic move by Base Power is designed to circumvent the often-troubled and slow interconnection queues that new energy sources typically encounter when attempting to connect to the main power grid. By installing large-capacity batteries directly within residential homes, where existing electrical connections are already in place, Base Power can supply power to the grid when it's most needed without waiting for lengthy approvals or infrastructure upgrades.
Base Power, which initially launched its operations in Texas two years ago, operates on a model where customers purchase electricity directly from the company rather than buying the battery system outright. In Illinois, Base Power is reportedly offering electricity rates that are 25% lower than those of the local utility, ComEd. The company's battery units are notably larger than many competitors, starting at 25 kilowatt-hours, facilitating a more substantial contribution to the grid during peak demand.
The timing of Base Power's entry into the PJM grid is particularly pertinent. PJM has been under scrutiny for its handling of rising electricity demand, even pausing applications for new generating sources in 2022 before reopening the queue in April. Wholesale electricity prices in PJM's territory, which includes Northern Virginia – a global hub for data centres – have nearly doubled over the past year due to the power crunch. This situation has led to warnings, with one of the region's largest utilities, AEP, even threatening to exit the market.
Base Power's virtual power plant model, which charges batteries when electricity prices are low and dispatches power when the grid is under strain, has already seen significant scale in Texas, where it operates over 500 megawatt-hours of battery storage. The company has also secured substantial investment, including a $1 billion funding round led by Addition, following a $200 million round earlier this year from investors such as Andreessen Horowitz, Lightspeed Venture Partners, and Valor Equity Partners.
While this initiative is currently focused on the US market, it highlights an innovative approach to grid management and energy supply that could offer valuable lessons for other countries, including the UK, facing similar challenges with grid capacity and renewable energy integration. The concept of distributed energy storage bypassing traditional grid bottlenecks could be a model for future energy infrastructure development globally.