A one-gigawatt power plant just appeared in California.

No smokestacks.
No pipelines.
No billion-dollar construction project.
No new fossil fuels.

Instead, it was built quietly across neighborhoods, homes, schools, apartments, and small businesses through batteries, smart thermostats, and coordinated energy use.

It is called a virtual power plant, and according to a new report from UC Santa Barbara researcher Leah Stokes, California’s Demand Side Grid Support (DSGS) program has already scaled to more than 1 gigawatt of dispatchable clean energy capacity in less than three years.

That is roughly the size of a nuclear plant.

And it changes the conversation about what “grid reliability” actually means.

For decades, utilities and fossil fuel interests have insisted that keeping the lights on requires massive centralized infrastructure: giant gas plants, sprawling transmission systems, and increasingly expensive utility-scale projects that ratepayers are expected to fund forever.

But California just demonstrated something different.

Reliability can come from communities.

The DSGS program coordinates distributed energy resources already connected to the grid, mostly home battery systems and smart devices, and uses them during periods of high demand or grid stress. Instead of firing up dirty peaker plants during heat waves and emergencies, the system taps into thousands of smaller resources spread across the state.

The result is cleaner air, lower costs, and a more resilient grid.

More than 203,000 sites participated in the program during 2025, providing approximately 1,367 megawatts of capacity statewide. According to the report, that is enough electricity to meet the peak demand of San Francisco.

This matters because California is approaching a crossroads.

Many aging fossil fuel peaker plants are reaching the end of their contracts by the end of 2026. Utilities want to replace them with more centralized infrastructure, including expensive gas plant retrofits and speculative hydrogen projects like the proposed conversion of the Scattergood plant in Los Angeles.

But the DSGS results raise an uncomfortable question for utilities and policymakers:

If communities can already provide over 1 GW of flexible clean capacity today, why are we still planning billions of dollars in fossil infrastructure for tomorrow?

The answer is not technical.

It is political and financial.

Large centralized infrastructure has historically concentrated power and profits in the hands of utilities and major energy developers. Distributed systems spread both resilience and economic participation across communities instead.

That shift threatens the old business model.

And the report makes something else very clear: this is not just a wealthy coastal phenomenon.

Participation in DSGS spans every legislative district in California and reaches 53 of the state’s 58 counties. Some of the highest participation rates are in working- and middle-class regions like the Inland Empire and Central Valley.

Tulare County, for example, recorded 11.1 participating sites per 1,000 residents. San Bernardino and Riverside counties also ranked among the strongest participants statewide.

Even more importantly, the report directly challenges the narrative that distributed energy mainly benefits affluent homeowners.

One in four DSGS sites are located in counties where the median solar adopter income is below $100,000. Counties with lower-income solar adopters actually showed higher participation rates in the program.

That is a major finding.

For years, critics have framed rooftop solar, batteries, and distributed energy as luxury technologies. But the data increasingly shows that working-class communities are embracing these tools because they provide something the centralized system often fails to deliver: lower bills, backup power during outages, and more local control.

The irony is that California’s most successful virtual power plant program is now at risk.

Despite delivering more than 1 GW of clean dispatchable capacity, DSGS has only received about 35% of its originally authorized funding. The program was excluded from the 2025-26 state budget and could run out of funding by the end of 2026 without legislative action.

Meanwhile, utilities continue asking for billions to extend the life of fossil infrastructure.

California should be moving in the opposite direction.

Imagine what could happen if the state treated virtual power plants with the same urgency and financial commitment it gives gas plants, transmission expansion, and utility megaprojects.

Instead of forcing communities to live next to polluting peaker plants, we could invest directly in neighborhood resilience.

Instead of concentrating energy wealth, we could democratize it.

Instead of pretending we need miracle technologies decades away, we could scale solutions that already work right now.

This is what the clean energy transition actually looks like.

Not futuristic marketing campaigns.
Not hydrogen hype.
Not more fossil fuel dependence dressed up as innovation.

It looks like people participating in the grid.

California just proved that reliability does not have to come from smokestacks.

One gigawatt made that impossible to ignore.