Utilities in hot water: Realizing the benefits of grid-integrated water heaters

By Herman K. Trabish, Utility Dive

A wave of interest is building in grid-integrated water heating (GIWH) as a path to system flexibility at a fraction of the cost of battery energy storage. At last count, 53.6 million of the 118.2 million U.S. water heaters were electric. Each could act as a battery for load shifting, peak shaving, or to integrate renewables, according to a Regulatory Assistance Project (RAP) paper. Hot water is used largely by residential utility customers in morning and evening hours, wrote RAP Sr. Advisor Jim Lazar. But it can be heated “when power is most available.” Click here to read more.

Photo credit: iStock

ALSO IN THE NEWS