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Energy Trust Home > Renewable Energy > Solar > Commercial Solar Electric > How Does Solar Work? > Net Metering
Net Metering
Oregon's net metering law allows utility customers to generate a portion of their own electricity and reduce their electricity bills. Once you decide to install a photovoltaic system, you and your solar trade ally contractor will contact PGE or Pacific Power to sign a net metering agreement. After the system is installed and has passed its electrical inspection, the utility will come to your home and switch out your existing utility meter for a net meter—which keeps track of energy flowing to and from your utility provider. PGE or Pacific Power will install and maintain your new meter at their own expense.
If your solar electric system is producing more electricity than needed while the sun is shining, your meter will run backwards! When your solar system is not generating enough electricity to meet your home's needs, electricity will be pulling from the utility grid, so you don't need a battery storage system.
Let's say your solar panels provide 200 kwh of energy. Here are three scenarios showing how energy is measured at the net meter:
• If you consumed 200 kwh in a given month, the net meter would read 0 kwh.
• If you consumed 100 kwh in a given month, the net meter would read -100 kwh (credit).
• If you consumed 500 kwh in a given month, the net meter would read 300 kwh usage from your utility.
Each month you will pay your utility company only for your net energy usage. Any surplus energy generated by your solar electric system during the sunny summer months is credited to your electricity account.
For more information on net metering call your electric utility company, or follow the links below.
| Pacific Power: (888) 221-7070 | Portland General Electric: (800) 542-8818 |
| •Pacific Power Photovoltaic Information | •Information on Net Metering |
| •Pacific Power Schedule 135 - Net Metering Service | •PGE Schedule 203 - Net Metering Service |
Photo Top: "I always wanted to install solar, but Energy Trust incentives, tax credits and Oregon's net metering law really put it over the top for us. We have systems for the business and home, and they're both working out great. Eventually we may add a second system for Pacific Botanicals." -- Mark Wheeler, Pacific Botanicals