Heat Pump Water Heaters Can be Demand Response Assets

By [email protected] There’s a debate over the role of water heaters as grid edge resources.

In one camp are the water heater vendors and utilities — most but not all of them rural electric cooperatives — interested in expanding the already massive fleet of electric water heaters being used for simple demand response to a much broader range of flexible grid services.

In the other camp are those who say that utilities and homeowners should focus instead on replacing electric resistance water heaters with heat pump water heaters. For most climates, they’re a much more efficient way to use electricity to heat water.

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