DEEP issues a request for proposals for large-scale electricity storage

HARTFORD, Conn. – As Connecticut continues to prioritize clean energy solutions, developers are invited to submit proposals for clean and cost-effective electricity storage.

The state Department of Energy and Environmental Protection (DEEP) issued a request for proposals (RFP) in late April, and several private developers and groups have submitted plans over the past few weeks.

The list of potential developers includes:

One of the main issues lawmakers tried to advance during this year’s short session was the future of clean energy in the state and trying to move Connecticut toward a zero-emission future.

The new proposal builds on legislation passed in 2021 and asks developers to determine whether their projects support the interconnection of environmentally beneficial projects such as electric vehicle charging points – mainly in disadvantaged communities – as well as other resources.

According to the RFP, any agreements resulting from the RFP process are also subject to federal and Connecticut laws and regulatory approvals. The RFP also states that developers are responsible for obtaining all necessary federal, state or local approvals appropriate to their project.

The proposal from one of the larger developers, Ormat Nevada, outlines some of the developer’s promises. Ormat’s project, called “Silk City,” will store approximately 100 MWac (or megawatts of alternating current) of renewable solar energy for power consumers in the state.

Other proposals from developers such as Rhynland Energy – which focuses on battery energy storage – and Nexamp – another large Boston-based energy provider – include several projects in various locations in Connecticut. Nexamp’s Stafford Springs energy storage proposal would store 5,000 kW of solar energy.

The request for proposals for electricity storage comes as the state continues its efforts to develop the offshore wind industry. The state is currently considering bids from Ørsted, Avangrid and South Coast Wind for a new offshore wind farm.

The team evaluating the storage RFP proposal will include representatives from DEEP, the Public Utilities Regulatory Authority, the Office of Consumer Adviser, United Illuminating and Eversource.

Consultants have also been hired to take part in the evaluation of applications.

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