Across the U.S., states are rolling back net metering programs that once let solar homeowners sell excess power at retail rates. California’s NEM 3.0 slashed export compensation by roughly 75%, and similar shifts are underway in Florida, Arizona, and North Carolina. The changes are costing homeowners money, extending payback periods for rooftop systems from 5–7 years to 10–12 years or more.

Utilities argue that the old rates unfairly shifted grid maintenance costs onto non‑solar customers. As solar penetration grows, midday generation often exceeds local demand, creating voltage issues and requiring expensive grid upgrades. Regulators say revised rates better reflect the time‑varying value of electricity.

The new economics make home batteries essential for maximizing solar value. Pairing panels with storage lets households use their own power during peak evening hours when grid prices spike. Companies like Tesla, Sunrun, and Enphase report surging attachment rates for Powerwall and IQ Battery systems. Without storage, many new solar installations barely break even.

Policymakers face a balancing act: encourage clean energy adoption while maintaining grid reliability and equity. The trend signals a shift from simple net metering toward time‑of‑use rates and virtual power plant programs that reward flexible, stored energy.