Virtual Power Plants 101 

Could Wisconsin Homeowners Be the Next Power Plant? 

When most people think of a power plant, they picture a massive facility generating electricity for thousands of homes. Over the past five years, a new kind of power plant has emerged across the country, and it’s a model that’s made up of everyday homeowners. 

Virtual Power Plants (VPPs) are becoming increasingly popular in states like CaliforniaTexas, and Vermont. Although Wisconsin has not fully adopted this movement yet, our state is in the early stages of using home energy technology to better manage the grid. 

What Is a Virtual Power Plant?

A Virtual Power Plant isn’t a physical building. Instead, it’s a network of connected buildings equipped with clean energy technologies like: 

  • Solar panels (residential and commercial) 
  • Home battery storage 
  • Electric vehicle chargers 
  • Heat pumps 
  • Smart home energy management systems (SPAN)  

Using secure software, utilities or energy providers can coordinate these devices to reduce electricity demand or supply stored energy back to the grid during periods of high demand. 

Rather than relying solely on traditional power plants, utilities can tap into thousands of connected locations to help balance the grid. 

Think of it as neighbors working together to create one giant, flexible energy resource. 

How Does It Work? 

Image of virtual power plant vs traditional power plant structure from Solar United Neighbors. 

Picture one of the hottest afternoons of the summer. Air conditioners are running nonstop, businesses are operating at full capacity, and electricity demand is reaching its peak. 

Instead of firing up another expensive power plant, the utility provider sends a signal to participating homes. 

Home batteries begin powering the home instead of drawing electricity from the grid. Smart thermostats make small temperature adjustments, and some electric vehicle chargers temporarily pause charging. 

Individually, these changes are small. Together, thousands of homes can reduce grid demand by several megawatts—enough to delay or even avoid the need for additional generation. 

Most programs operate as an opt-in model, so you can still override the request to change your energy use if what you currently have running is crucial. However, most homeowners opt for the small adjustments and never notice the difference.  

Why Are Virtual Power Plants Entering the Scene? 

Electricity demand is growing at one of the fastest rates in the last century. 

Several factors are driving this increase, including AI and data center usage, increased adoption of electric vehicles, and general electrification of homes and businesses to reduce greenhouse gas emissions. 

Building new power plants and transmission infrastructure takes years and billions of dollars. 

Virtual Power Plants offer a faster, cleaner way to increase grid capacity by making better use of energy resources that already exist in homes. 

What Are the Benefits for Homeowners? 

Participating in a Virtual Power Plant can offer several advantages. 

  1. Backup Power 

If your home already has a battery, you’ll still have backup power during outages while supporting the grid during normal operation. With shifting weather events in Wisconsin, investing in storage to keep a household running during an outage is becoming more common every year. 

  1. Compensation 

Many VPP programs compensate homeowners for allowing their batteries or smart devices to participate during peak demand events. Payments may come as annual incentives, bill credits, or direct compensation, depending on the utility or program. 

Annual Tesla Program Payout. Credit: r/Tesla 

In California, annual earnings range up to $700, while some Massachusetts homeowners earn up to $1,375 in utility credit from their battery backup.   

  1. Stronger Grid Reliability 

Every participating home reduces stress on the electrical grid, lowering the risk of equipment overload during periods of high demand. 

  1. Cleaner Energy 

Virtual Power Plants make better use of renewable energy by storing excess solar production during the day and using it when demand is highest. 

Does Wisconsin Have Virtual Power Plants? 

Not on a broad residential scale, but it’s likely coming soon. 

Wisconsin utilities currently offer programs such as time-of-use rates, smart thermostat incentives, and electric vehicle charging programs that encourage customers to shift when they use electricity. Homeowners can also install solar panels and battery storage systems, but there isn’t currently a statewide residential Virtual Power Plant program that aggregates home batteries for grid support. Some Wisconsin utilities, such as Alliant Energy, are testing out a VPP model with battery storage

However, interest in distributed energy resources is growing across the Midwest. Utilities are investing in battery storage, and the increasing demand for electricity is prompting discussions about new ways to manage the grid. As more homeowners install battery systems, Wisconsin could become a strong candidate for future VPP programs. 

Is a Home Battery Worth Considering Today? 

Even though Wisconsin doesn’t yet offer widespread residential Virtual Power Plant participation, installing a battery today can still provide meaningful benefits. 

A home battery can: 

  • Provide backup power during outages. 
  • Store excess solar energy for use after sunset. 
  • Reduce reliance on the grid during expensive or high-demand periods. 
  • Position your home to participate if Wisconsin launches a residential VPP program in the future. 

Many battery manufacturers, including TeslaFranklinWH, and Enphase, already support Virtual Power Plant technology in states where programs are available. As Wisconsin begins to test the Virtual Power Plant model, homes with solar and storage will be ready to receive more savings from their storage system with just the touch of an enrollment button. 

The Future of Energy Starts at Home 

The electric grid is evolving from a one-way system into a connected network of homes, businesses, and renewable energy resources working together. 

Virtual Power Plants represent one of the most exciting opportunities for homeowners to play an active role in strengthening the grid while potentially earning financial benefits. The question is no longer if Virtual Power Plants will become part of Wisconsin’s energy future, but when Virtual Power Plants will appear as a standard option for all utility providers. 

Homeowners who invest in solar and battery storage today are preparing for a future where they actively participate in powering their communities. 

At A Glance

  • System Size

    173.6kw

  • Estimated Savings

    $28,483 Annually

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metered

  • Environmental Equivalents

    184,864 Pounds of Coal

At A Glance

  • System Size

    26kw

  • Estimated Savings

    $4,238 Annually

  • Utility Provider

    Two Rivers Water & Light

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    2,411,958 Smartphones Charged

At A Glance

  • System Size

    23.8kw

  • Estimated Savings

    $3,716 Annually

  • Utility Provider

    Alliant Energy

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    1,948 Pounds of Coal

At A Glance

  • System Size

    197.6kw

  • Estimated Savings

    $22,293 Annually

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metered

  • Environmental Equivalents

    20,695 Gallons of Gas

At A Glance

  • System Size

    149.5kw

  • Estimated Savings

    $23,913 Annually

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metered

  • Environmental Equivalents

    1.8 Tanker Trucks of Gas

At A Glance

  • System Size

    123kw

  • Estimated Savings

  • Utility Provider

    Madison Gas & Electric

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    13,709,514 Smartphones Charged

At A Glance

  • System Size

    389kw

  • Estimated Savings

    $56,681 Annually

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metered

  • Environmental Equivalents

    44,398,424 Smartphones Charged

At A Glance

  • System Size

    133.2kw

  • Estimated Savings

    $1,114,935

  • Utility Provider

    Madison Gas & Electric

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    14,727 Gallons of Gas

At A Glance

  • System Size

    25.7kw

  • Estimated Savings

  • Utility Provider

    WE Energies

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    26,293 Pounds of Coal

At A Glance

  • System Size

    26kw

  • Estimated Savings

  • Utility Provider

    Alliant Energy

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

At A Glance

  • System Size

    28.86kw

  • Estimated Savings

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metered

  • Environmental Equivalents

At A Glance

  • System Size

    43.6kw

  • Estimated Savings

    $151,039

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metered

  • Environmental Equivalents

    4,817,623 Smartphones Charged

At A Glance

  • System Size

    73.84kw

  • Estimated Savings

    $329,713

  • Utility Provider

    Plymouth Utilities

  • Connection Type

    Parallel Generation

At A Glance

  • System Size

    64.845kw

  • Estimated Annual Savings

    $21,442

  • Utility Provider

    WPS

  • Connection Type

    Parallel Generation

At A Glance

  • System Size

    133kw

  • Estimated Savings

    $386,522

  • Utility Provider

    Alliant Energy

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    12,550 Gallons of Gas

At A Glance

  • System Size

    26.6kw

  • Estimated Anual Savings

    $3,953

  • Utility Provider

    Alliant Energy

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    12,578 Pounds of Coal

At A Glance

  • System Size

    128.7kw

  • Estimated Savings

    $513,821

  • Utility Provider

    Manitowoc Public Utilites

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    13,964,512 Smartphones Charged

At A Glance

  • System Size

    45.5kw

  • Estimated Savings

    $275,531

  • Utility Provider

    WE Energies

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    4,679,952 Smartphones Charged

At A Glance

  • System Size

    1.825 MW

  • Estimated Savings

    $103,000 Annually

  • Utility Provider

    WE Energies

  • Connection Type

    Direct Sell Rate Tariff

  • Environmental Equivalents

    1,740,000 ton of CO2 emissions

At A Glance

  • System Size

    388.8kw

  • Annual Savings

    $51,288

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metering

  • Environmental Equivalents

    26,104 gallons of gasoline consumed. 22,789 gallons of diesel consumed. 256,673 pounds of coal burned. 3.1 tanker trucks' worth of gasoline.

At A Glance

  • System Size

    388.9kw

  • Annual Savings

    $51,340

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metering

  • Environmental Equivalents

    26,135 gallons of gasoline consumed. 22,815 gallons of diesel consumed. 256,973 pounds of coal burned. 3.1 tanker trucks' worth of gasoline.

At A Glance

  • System Size

    299.3kw

  • Annual Savings

    $42,934

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metering

  • Environmental Equivalents

    20,076 gallons of gasoline consumed. 17,526 gallons of diesel consumed information. 197,404 pounds of coal burned.

At A Glance

  • System Size

    50.7 kW - DC

  • Estimated Savings

    $10,329

  • Utility Provider

    WE Energies

  • Connection Type

    Line Side/Parallel Generation (CGS-NM)

  • Environmental Equivalents

    361,853lbs of coal burned annually

At A Glance

  • System Size

    31.87 kW

  • Estimated Savings

    $4,998 Anually

  • Utility Provider

    WE Energies

  • Connection Type

    Monthly Net Metering (CGS-NM)

  • Environmental Equivalents

    CO2 Emissions: 22.6 Metric Tons 2,341 Gallons of Gasoline

At A Glance

  • System Size

    370kw

  • Estimated Savings

    $1,053,732

  • Utility Provider

    Alliant Energy

  • Connection Type

    Parallel Generation

  • Environmental Equivalents

    401,786 lbs. of Coal or 44,218,770 smartphones charged.

At A Glance

  • System Size

    389kw

  • Estimated Savings

    $1,190,164

  • Utility Provider

    WE Energies

  • Connection Type

    Net Metering

  • Environmental Equivalents

    384,108 lbs. of Coal or 42,273,187 smartphones charged