How Net Metering Works: Complete Guide

How Net Metering Works: Complete Guide

Net metering is the policy that makes residential solar economically viable for most homeowners. Understanding how it works — and your state's specific policy — is essential for evaluating solar's financial return.

What Is Net Metering?

Net metering is a billing arrangement between solar homeowners and their electric utility. When your solar panels produce more electricity than you're using (typically during sunny daytime hours), the excess energy flows back to the grid through your electric meter. You receive credits on your electricity bill for this exported energy.

How It Works Step by Step

During the Day: Your solar panels produce electricity. Your home uses what it needs, and any excess flows back to the grid. Your electric meter tracks this exported energy and you accumulate credits.

At Night: Without sunlight, your panels aren't producing. You draw electricity from the grid as normal. The energy you consume is offset by the credits you earned during the day.

Monthly Bill: At the end of each billing period, you pay only for your "net" consumption — the difference between energy consumed from the grid and energy exported to the grid. If you exported more than you consumed, the credits typically roll over to the next month.

Types of Net Metering

Full Retail Rate Net Metering: The gold standard for solar customers. You receive credit at the full retail electricity rate for every kWh exported. Available in most states including New York, New Jersey, Maryland, and Massachusetts.

Reduced Rate Net Metering: You receive credit at a rate below the retail price, often called an "avoided cost" or "wholesale" rate. States like California (NEM 3.0), Arizona, and Nevada have shifted to reduced rates.

No Net Metering: Some states (Alabama, Tennessee, Mississippi) don't mandate net metering. In these states, you may receive little to no compensation for excess energy. Solar can still be worthwhile through self-consumption, but the economics are less favorable.

State Net Metering Policies

Net metering policies vary significantly by state and are one of the most important factors in solar economics:

Best policies (full retail): NY, NJ, MD, MA, CT, RI, ME, VT, CO, MN, IA, OR

Reduced rate: CA, AZ, NV, IN, UT

Limited or none: AL, TN, MS, OK, GA, TX (varies by utility)

How Net Metering Affects Your Solar Savings

In a full retail net metering state with 25¢/kWh electricity, every kWh you export is worth 25 cents in credits. This means your solar panels generate maximum value whether you consume the energy yourself or export it.

In a reduced rate state, the economics shift to favor self-consumption. You save the full retail rate on energy you use directly (25¢/kWh) but only receive, say, 5¢/kWh for exported energy. This makes battery storage more attractive.

The Future of Net Metering

Net metering policies are evolving nationwide. California's NEM 3.0 (2023) dramatically reduced export compensation, and other states may follow. This makes going solar sooner rather than later strategically smart — many states grandfather existing solar customers under the net metering policy in effect when they interconnected.