daily · Clean Energy

Brattle: scaling residential VPPs to 35 GW could cut electric bill hikes by half, worth $4B-$7B a year

A Brattle Group report finds that achieving a 4 percent system peak demand reduction through residential virtual power plants - tripling capacity from 10 GW to 35 GW - could reduce projected household electric bill increases by more than half over five years and generate 4 billion to 7 billion dollars in annual consumer benefits.

By Greener Numbers Editorial Team · Published October 19, 2026 · Updated 10/19/2026

Scaling residential virtual power plants to achieve a 4 percent system peak demand reduction could cut projected household electric bill increases by more than half over the next five years, according to a report from The Brattle Group covered by Utility Dive on October 14, 2026. The 4 percent target is already being achieved by the top 10 percent of utility demand response programs.

If U.S. utilities scaled participation to match those leading programs, nationwide residential VPP capability would more than triple, from approximately 10 GW today to 35 GW. Deploying that additional 25 GW of residential demand flexibility could generate 4 billion to 7 billion dollars per year in financial benefits for U.S. households, Brattle estimates.

The benefits split into two value streams. Approximately 1.8 billion to 5.5 billion dollars annually would flow to all ratepayers through suppressed wholesale capacity costs and deferred transmission spending, while another 1.9 billion dollars would be paid directly to participating households enrolled in flexible energy programs.

The case for VPPs arrives as electricity affordability deteriorates. The average U.S. residential electricity rate increased 33 percent in nominal terms between 2019 and 2025, Brattle analysts said, with growth recently outpacing inflation as power system equipment costs climb and the capital cost of new natural gas generation rises.

Brattle emphasized that reaching 35 GW requires no new hardware development. Flexible capacity already exists in connected smart thermostats, home battery storage systems and electric vehicle chargers; the gap is enrollment. The report points to improved, manufacturer-led enrollment programs as the fastest route for utilities to access that latent demand-response potential.

For consumers, the finding reframes rooftop solar, home batteries and EV chargers as grid assets with direct bill impacts: programs that pay households for flexibility both reward participants and lower system costs for everyone else. Whether utilities scale enrollment to the 4 percent level is now the binding constraint, not the technology.

Official source: Utility Dive ↗