PJM Interconnection

New love for US pumped hydro?

By Jason Deign Pumped hydro, the forgotten granddaddy of energy storage, seems back in fashion: records show 19 new project applications were filed in the US this year.


PJM energy storage installations have overtaken those in California, while Hawaii solar-plus-storage is also a huge US energy storage growth market. Photo credit: RES Americas

The next big US battery markets

By Jason Deign At least two US regions outside California now represent double-digit markets for electrochemical energy storage, in terms of the number of projects and megawatts installed. A new report from Energy Storage Update shows PJM…


LG Chem battery boss sees huge growth in C&I storage. LG Chem is also taking on Tesla in home energy storage and increasing its grid-scale projects.

LG Chem: C&I to be as big as grid-scale

By Jason Deign A top executive at LG Chem has added to growing optimism over the prospects for commercial and industrial (C&I) energy storage growth in the US. Peter Gibson, LG Chem’s director of energy…


RES Americas has opened the first dedicated grid frequency regulation energy storage plant in Ohio for PJM.

Frequency regulation: the battery business case

The value of battery systems in helping with grid frequency regulation is being put to the test this week in a project in Ohio, USA. Renewable Energy Systems Americas (RES Americas), a North American renewable power project…


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Two deals add 80MW of US storage

US grid operator PJM Interconnection, whose operations serves 60 million Americans across the Midwest and northeast of the country, has hit the renewables headlines twice this week for signing up to two separate energy storage deals.