The Nextera Wyman – Battery Energy Storage System is a 16,200kW energy storage project located in Yarmouth, Maine, US.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2016 and was commissioned in 2016.


The Nextera Wyman – Battery Energy Storage System was developed by NextEra Energy . The project is owned by NextEra Energy (100%).

The key application of the project is frequency regulation.

Contractors involved

NextEra Energy has delivered the battery energy storage project.

Additional information

The project is part of an industry-wide trend to use battery storage to moderate power supply to the grid, potentially lowering electricity prices for consumers. In other instances, including potential projects in Maine, batteries can store the intermittent power generated by wind and solar, which are affected by the weather.

About NextEra Energy

NextEra Energy Inc (NEE) is an electric power and energy infrastructure company. It generates, transmits and distributes electricity; and holds investments in gas infrastructure assets. The company produces power using nuclear, coal, oil, natural gas, wind and solar sources. NEE also purchases electricity for resale, and provides risk management services related to power and gas consumption. It serves residential, commercial, industrial, wholesale and other customers in Florida; and owns, develops, constructs, manages and operates electricity generation facilities in the US and Canada wholesale energy markets. NEE is headquartered in Juno Beach, Florida, the US.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.