Net Metering vs. Solar Buyback Rates: A 2026 Homeowner's Guide

Published October 27, 2026 by EnergyIQ

If you are shopping for rooftop solar in 2026, the single biggest determinant of your payback period is not panel efficiency or installer pricing. It is the rulebook your utility uses to value the electricity your roof sends back to the grid. That rulebook goes by names like net metering, net billing, and buyback, and the differences between them can change lifetime savings by tens of thousands of dollars. This guide explains how each mechanism works, why the policy landscape keeps shifting, and how to combine solar with batteries and time-of-use rates so your system earns its keep no matter which compensation scheme applies in your territory.

What Net Metering Is and How It Works

Net metering is the simplest and historically most generous arrangement. When your solar array produces more electricity than your home is consuming at that moment, the surplus flows out through a bidirectional meter to the grid, and your meter effectively runs backward. Under classic net metering, each exported kilowatt-hour cancels one kilowatt-hour you later import, typically within the same billing month. The U.S. Energy Information Administration, which tracks electricity markets and rate structures nationwide, describes residential solar adoption as one of the defining load-shape stories of the decade, and net metering was the policy engine behind much of that growth. The economics are easy to grasp: if your retail rate is 24 cents per kWh, every exported kWh under full retail net metering offsets a 24-cent charge. Your bill at month's end reflects net consumption, hence the name. Where the policy remains intact, it remains the benchmark against which every alternative is judged.

Net Metering, Net Billing, and Feed-in Tariffs: The Key Differences

The umbrella term for successors is export compensation, and the variants matter. Full retail net metering credits exports at your retail rate. Net billing, sometimes called a buyback plan, pays a separate, usually lower rate for exports, often tied to the wholesale market price or an avoided-cost formula, while you still pay full retail for everything you import. Feed-in tariffs, more common outside the United States, pay a fixed premium rate for all production under a long-term contract. Some utilities also apply time-of-use netting, valuing exports at the rate in effect when they occur, which rewards west-facing arrays and battery-assisted evening exports. As a worked example, a home exporting 400 kWh per month earns roughly 96 dollars at a 24-cent retail credit but perhaps 16 to 20 dollars at a 4-to-5-cent avoided-cost buyback. Same roof, same sunshine, radically different payback math. Before signing anything, get your utility's export rate schedule in writing, because sales proposals frequently model assumptions that do not match the tariff you will actually be enrolled in.

Why Policy Details Vary by State and Utility

Solar compensation in the United States is regulated primarily at the state level, with individual utilities implementing the details, which is why two neighbors across a state line can face entirely different economics. Many states that pioneered net metering have transitioned to successor tariffs as solar penetration rose, citing cost-shift concerns, while others have preserved retail netting with caps on system size. The Department of Energy's Solar Energy Technologies Office publishes guidance for homeowners that walks through interconnection, sizing, and consumer-protection basics, and it is a sensible first stop for verifying installer claims. Key variables to check include whether credits expire monthly or annually, whether there is an annual true-up with payment or rollover, non-bypassable charges that apply even to offset kWh, and minimum bill provisions. Policy also moves: a rate structure quoted in a contract from last year may no longer be available to new interconnections. The controlling documents are your utility's current tariff sheet and interconnection agreement, not a brochure.

How Export Credits Show Up on Your Bill

Reading a solar bill under any export scheme becomes straightforward once you separate three numbers. First, gross import: the total kWh you drew from the grid, shown on most meters as received energy. Second, gross export: the total kWh your system pushed back, shown as delivered energy. Third, net position: the difference after the utility applies its crediting formula. Under net metering, import and export are netted before billing, so you may see a single net figure. Under net billing, you will see a supply charge for all imports and a separate, smaller credit line for exports, often labeled something like excess generation credit. Watch the accumulation rules. Monthly rollover means surplus credits vanish sooner; annual true-up means a settlement month, often tied to your anniversary date, where leftover credits are paid out at a lower rate or forfeited. If your utility bills on time-of-use intervals, credits are time-stamped, and a noon export may earn a fraction of what the same kWh would fetch during a 7 p.m. peak. Pulling a year of interval data from your utility portal before you size a system is the cheapest due diligence available.

Pairing Batteries with Solar Under Time-Based Rates

Battery storage changes the export question entirely, because a battery lets you choose when your solar kilowatt-hours are consumed or exported. Under a low buyback rate, the best strategy is self-consumption: store midday surplus and discharge it during your evening peak window, displacing imports at the retail rate you would otherwise pay. Under time-of-use netting, the play shifts toward value stacking: export deliberately during high-priced peak hours and import cheap overnight electricity for the morning. The U.S. Energy Information Administration's residential consumption surveys show evening peaks remain the dominant household load pattern, which is precisely the window batteries target. Sizing logic follows the tariff. If exports are nearly worthless, size the battery to cover your typical evening consumption rather than your whole-day usage. If peak exports are well paid, keep more headroom for daytime discharge. There are diminishing returns on both sides, so model at least a year of your actual hourly data rather than a generic load profile before committing to a chemistry and capacity.

Five Steps to Take Before You Sign a Solar Contract

First, request your utility's current net metering or buyback tariff sheet and confirm which version applies to new customers, not legacy accounts. Second, pull twelve months of interval or monthly usage data and note whether your usage skews to afternoons or evenings. Third, ask each installer for two production estimates, one assuming today's export rules and one assuming the successor tariff if a transition has been announced, so the downside case is visible. Fourth, if you are considering a battery, get the dispatch logic in writing: whether it prioritizes backup reserve, self-consumption, or peak export. Fifth, run the interconnection timeline, since queues in some territories stretch for months and your credits only begin once permission to operate is granted. A contract that looks mediocre under retail netting can look strong under a generous time-of-use export rate, and vice versa. The homeowners who come out ahead are rarely the ones with the best hardware; they are the ones who read the rate design first.