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VPP 101
VPP 101: what a virtual power plant is, and who it pays
The plain-English guide: how a fleet of home devices becomes a power plant, what happens during an event, and how each device fits in.
VPP Economics has no affiliation with, sponsorship from, or endorsement by any utility, aggregator, platform, or device maker named here.
The short answer
- A virtual power plant is a fleet of small devices — batteries, EVs, thermostats, water heaters, solar, business equipment — coordinated by software to act like one power plant.
- It exists to cover peaks. The grid is built for its busiest few hours. Shifting load or supplying power in those hours avoids building and running peaking plants. The U.S. has about 30 GW of VPPs and room for 80–160 GW by 2030 (DOE Liftoff).
- Not every “VPP” is orchestrated. Traditional demand response calls devices a few times a season; an orchestrated VPP dispatches them continuously, sometimes into wholesale markets.
- You get paid in sign-up bonuses, per-kW or per-event payments, bill credits, or cheaper hardware — after whatever share the operator keeps.
How big VPPs are — and could be
Gigawatts of capacity. The 2030 bar shows the DOE’s range.
Swipe to see the full chart →
Distributed energy resources (DERs) in a VPP
Each type of distributed energy resource (DER) plays a different role in a VPP and gets paid differently. Start with the device you own.
Battery VPPs
Fast, precise, exportable. The highest-paid device per home.
Economics →DEREV VPPs (vehicle-to-grid)
A bidirectional EV exports from its pack like a large home battery. Pilots in Massachusetts and Maryland.
Economics →DERManaged charging
Shifting or pausing EV charging so it avoids the peak. Paid $120–$400 a year today.
Economics →DERThermostat VPPs
Pre-cooling or pre-heating a home around peak events. Small checks, huge numbers.
Economics →DERHeat pump water heater VPPs
Thermal storage in a tank, shifted daily or during events.
Economics →DERSolar + storage VPPs
Solar paired with batteries, the backbone of California’s fleet.
Economics →DERCommercial & industrial load flexibility
The original VPP: businesses paid to shed or shift load.
Economics →What happens during a VPP event
The forecast
The utility or market expects a peak — a heat wave, cold snap, or a price spike.
The notice
Your app or utility announces an event. Batteries charge up; thermostats and water heaters pre-cool or pre-heat.
The dispatch
For 1–4 hours, the fleet cuts use and batteries discharge. You can usually opt out.
The payment
Performance is measured against your normal use, and payment arrives per event, per season, or per year.
Demand response vs. an orchestrated VPP
Traditional demand response is one-way and occasional: a signal goes out, devices back off, and the utility counts what it saved. An orchestrated VPP is two-way and continuous: software forecasts what each device can do, dispatches the right mix, and verifies the result — often enough to bid into a wholesale market. Many programs sit somewhere in between, and the label on the program is not always a reliable guide.