How Net Metering Works Step by Step
Your solar panels produce electricity throughout the day. During midday hours, production typically exceeds your home's real-time consumption. The surplus flows back to the grid through your bidirectional utility meter.
Your utility tracks what you send to the grid and issues a bill credit. At night or on cloudy days, you draw from the grid and those credits offset consumption. On a well-sized system in a strong net metering state, your annual bill can drop 70–100%.
Most utilities do a monthly or annual "true-up." Any credits remaining at year-end are rolled over, paid out at a lower rate, or expired — depending on your state and utility tariff. The DSIRE databasetracks every state's current net metering rules.
Net Metering by State: Best and Worst Policies
| State | Policy | Export Rate | Rollover | Rating |
|---|---|---|---|---|
| New York | Full NEM | Retail (~22¢/kWh) | Monthly + annual true-up | ⭐⭐⭐⭐⭐ |
| New Jersey | Full NEM | Retail (~18¢/kWh) | Monthly rollover | ⭐⭐⭐⭐⭐ |
| Massachusetts | Full NEM | Retail (~25¢/kWh) | Monthly rollover | ⭐⭐⭐⭐⭐ |
| Maryland | Full NEM | Retail (~16¢/kWh) | Monthly rollover | ⭐⭐⭐⭐ |
| Arizona | Full NEM | Retail (~13¢/kWh) | Monthly rollover | ⭐⭐⭐⭐ |
| Colorado | Full NEM | Retail (~14¢/kWh) | Monthly rollover | ⭐⭐⭐⭐ |
| Florida | Full NEM | Retail (~14¢/kWh) | Annual true-up | ⭐⭐⭐ |
| Nevada | Reduced | ~75% of retail | Monthly rollover | ⭐⭐⭐ |
| California | NEM 3.0 | Avoided cost (~5–8¢) | Monthly; low value | ⭐⭐ |
| Texas | No mandate | Utility-specific (4–11¢) | Varies | ⭐⭐ |
California NEM 3.0: What Changed
California's NEM 3.0 policy (effective April 2023) dramatically reduced the value of exporting solar to the grid. Under NEM 2.0, homeowners received retail rate credits (~29¢/kWh). Under NEM 3.0, export compensation dropped to avoided cost — roughly 5–8¢/kWh — an 80% reduction.
The solution is battery storage. Storing midday surplus and using it in the evening avoids exporting at low rates. California's Self-Generation Incentive Program (SGIP) offers rebates up to $1,000 toward battery installation for qualifying households.
Annual Savings: Strong NEM vs. Weak NEM vs. No NEM
| Scenario | Annual Output | Annual Savings | Payback (8 kW) |
|---|---|---|---|
| Full retail NEM (NY, NJ, MA) | 10,400 kWh | $1,800–$2,600 | 8–10 yrs |
| Partial NEM (75% retail, NV) | 10,400 kWh | $1,350–$1,950 | 10–13 yrs |
| NEM 3.0 + self-consume (CA) | 10,400 kWh | $900–$1,400 | 14–18 yrs |
| No NEM, self-consume only | 10,400 kWh | $600–$900 | 20–25 yrs |
Assumes 8 kW at $22,400, 50% self-consumption rate. EIA state avg rates 2025.
Frequently Asked Questions
What is net metering?
How much do I get paid for excess solar energy?
Which states have the best net metering?
What is NEM 3.0 in California?
Do excess solar credits roll over month to month?
Key sources:
• DSIRE — Database of State Incentives for Renewables & Efficiency
See Net Metering for Your State
Our state pages include net metering policy details and real savings calculations based on your local electricity rate.