What is net metering?

Your solar panels ofen produce more energy than what’s needed to power your home. That energy has to go somewhere, so in most cases, it goes back to your electric grid. If you live in an area with net metering, you’ll be compensated for your contribution.

Net metering is an electric billing tool that makes solar even more affordable. Think of it as a virtual piggy bank for your electricity; when your panels overproduce, the extra energy flows into the grid, earning you credits through your utility. On a cloudy or rainy day when your panels aren't producing enough energy, you’ll pull energy from the grid and count that against the credits you've banked over time. As a solar customer, you’ll only be billed for your "net" energy usage. 

Also known as net energy metering (NEM), this foundational policy is one of the biggest incentives to go solar. Here's everything you should know about it.

A correctly sized solar energy system can produce enough power to meet your annual electricity demands, but it won’t always match up with your daily demand. Solar panels produce more energy in the summer when the days are longer and sunnier and less in the winter when the sun is lower and the days are shorter.

Net metering helps balance this by giving you credits when excess energy is produced (summer), which you can use later (winter). Here’s how it works:

• When your solar panels produce more electricity than you're using at any point during the day, the electricity is sent back to the grid, running your electric meter in reverse.

• When your energy use is higher than your solar panel production (either at night or on cloudy days), you'll pull electricity back from the grid, running your meter forward.

• At the end of the month or year, you'll be billed the net amount of what you send to the grid and what you pull from the grid: hence "net metering".

Net metering policies were designed for two primary purposes: First, to encourage the greater adoption of renewable energy throughout the country, and second, because utilities—and the electricity grid as a whole—can benefit from the influx of low- to no-cost solar energy. 

Solar energy can help balance the cost of purchasing electricity from other resources, especially during summer months when electricity is often the most expensive on the hottest—and sunniest!—days of the year.

Net metering doesn't just apply to solar, either. Solar net metering is by far the most common type, but depending on the rules in your state, you may be able to net meter with other types of distributed generation systems, like wind turbines.

Most homes produce excess electricity in the summer months and use more electricity from the grid in the winter. Because these variations in production are fairly predictable, your utility won't send you a monthly check when you produce more than you need.

Instead, you'll build up extra credits during the summer months so that you can draw from them at night and during the winter months when you need them. With the right design, your system can generate enough power to match your total electricity use for a year, even if you produce much more than you need in some months and much less in others.

When your solar power system generates more electricity than you use over the course of a month, you'll receive a credit based on the net number of kilowatt-hours you gave back to the grid. If you produce less electricity than you use in a given month, you must buy electricity from your utility to make up the difference. In these instances, you would pay for the electricity you use, minus any excess electricity your solar panels generate.

We track all solar incentives in the states where the EnergySage Marketplace is open. Click on your state to learn if net metering is available to you and what other incentives may help you save with solar:

• Arizona

• Arkansas

• California

• Colorado

• Connecticut

• Delaware

• Florida

• Georgia

• Idaho

• Illinois

• Indiana

• Iowa

• Kansas

• Kentucky

• Louisiana

• Maine

• Maryland

• Massachusetts

• Michigan 

• Minnesota

• Missouri

• Nevada

• New Hampshire

• New Jersey

• New Mexico

• New York

• North Carolina

• Ohio

• Oklahoma

• Oregon

• Pennsylvania

• Rhode Island

• South Carolina

• Tennessee

• Texas

• Utah

• Vermont

• Virginia

• Washington

• Washington D.C.

• West Virginia

• Wisconsin

Why net metering is the best solar incentive

Net metering allows you to store every unit of energy you produce with solar to be used at a later date from the grid. It can help you save thousands of dollars over the lifetime of your solar panel system.

While net metering isn't the only way utilities compensate homeowners for going solar, it's by far the most common and effective solar policy at the moment. If you're interested in learning more, visit the DSIRE®, which tracks net metering and other solar incentives and rebates.