Selling Solar Back To The Grid

The Short Answer

Yes, you can sell solar back to the grid. When your solar panels produce more electricity than your home uses, the excess flows out onto the public lines, and your utility company gives you a credit or a payment for it. How much you get depends on where you live and when you signed up, so always ask your utility for the exact rate.

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Estimate your payback time

The Meter That Spins Backwards

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In the middle of a sunny day, your solar panels are working hard. The fridge is humming and the laptop is charging, but you're at work and the house is using almost nothing. Say your panels are making 5,000 watts and your house is sipping maybe 300.

So where do the other 4,700 watts go?

If you're fully off-grid, they go into your battery, or they just get wasted because the battery is full.

But on the grid, something better happens. The excess solar energy flows out of your house and onto the public lines, and on an old-style meter you could watch the dial spin backwards. Your utility now owes you for that power.

That's net metering. Your meter "nets out" the electricity you used against the electricity you sent back. At the end of each billing period you only pay for the difference, and if you sent more than you used, some utilities pay you.

It's the closest thing to selling sunshine that exists.

How Does Selling Solar Power Back To The Grid Work?

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You need three things to get started.

A grid-tied inverter comes first. Solar panels make DC electricity, and your home runs on AC. A grid-tied inverter turns one into the other, and it also listens to the grid and matches its rhythm exactly, like two kids on swings moving in step. When the two match, your extra power can flow out into the lines.

Next you need approval from your utility. They check your installation to ensure the inverter has something called "anti-island protection". That's a safety feature. If the grid goes down (say, during a storm), the inverter shuts itself off, so a line worker fixing a downed cable doesn't get hit with electricity from your roof.

Last, you need a meter that counts power going both ways. Most modern smart meters already do this, and many solar systems also offer a monitoring app that shows your solar generation and how much you used and sent out each day.

Once it's hooked up, some hours you draw from the grid, some hours you push power back, and the numbers add up on your bill.

Two Very Different Net Metering Deals

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Not every utility pays the same price for your solar power.

Full retail net metering is the best deal. Each kilowatt-hour you send out earns a credit worth the same as one you buy. With a big enough system, you can wipe most of your bill away.

The weaker deal pays an "avoided cost" rate. That's what the energy company would have paid to get that electricity from its own generation or somewhere else at that hour, and it is usually lower than the price you pay. So you're selling cheap and buying expensive. Solar can still pay off, however, just more slowly.

Which deal you get depends on where you live and when your system was connected. Here are a few real examples, checked in October 2026:

So the same system can pay for itself fast in one place and slowly in another. Try your own numbers in our payback calculator.

Is Selling Electricity Back To The Grid Worth It?

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It is worth it most when the credit you get is close to the price you pay to buy power. The closer those two numbers are, the more every sunny afternoon is worth.

The average US home bought about 10,791 kWh of electricity in 2022, according to the US Energy Information Administration. That's roughly 30 kWh a day, enough to run a 100-watt bulb for 300 hours. A solar system sized close to that yearly number, on a full retail deal, can reduce the bill to little more than the fixed fees.

On an avoided-cost deal, the trick changes. Energy you use yourself saves you the full price, while energy you send out earns less. So the more of your own solar production you use, the better your returns. Run the dishwasher at noon instead of at night, and that energy never has to be sold cheap.

That's where batteries come in. With a battery you can store your daytime surplus and use it yourself in the evening, instead of selling it cheap and buying it back expensive. As credits drop, more homeowners add a battery to keep their own energy.

How home batteries work

Benefits And Catches Of Selling Solar

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The benefits are real. A shorter payback time, no need for a big battery bank, and the grid acts like a giant free storage box that never fills up. You also send clean, renewable energy to your neighbours, and if your panels ever stop, the grid can still provide backup power.

But there are catches.

The biggest one? When the grid goes down, a basic system goes down too. Hawaiian Electric tells its solar homeowners plainly that grid-tied systems are designed to shut down in an outage for safety reasons. So during a blackout your panels can sit in full sun, doing nothing. Plenty of people expect the lights to stay on in a storm, and with a basic setup they don't.

If you want both options, the fix is a hybrid system. A hybrid inverter works both ways. While the grid is up, it sends your surplus out as normal. When the grid fails, it unhooks itself, switches to a battery and keeps your house running on solar. It costs more and you need a battery, but you get both.

The other catch is that the rules change. California and Hawaii both cut their deals for new customers, and the Netherlands is ending its scheme. A great deal today is not a promise forever, so read the fine print.

The Pure Off-Grid Alternative

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Selling solar back to the grid is only for grid-tied homes. Fully off-grid systems make energy, store it in batteries and use it. There's no grid to sell to, but also no utility paperwork and no new rules wiping out your payback.

Some people love that simplicity. Others stay on the grid, the cheapest "battery" around, or pick a hybrid setup: sell the surplus when it pays well, store some for night and outages, and keep the grid as a safety net.

Off-grid vs grid-tied solar, which is right for you?

How To Start Selling Solar Power Back To The Grid

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Before you spend money on a grid-tied solar installation, ask your utility and your installer these questions.

What's the rate per kilowatt-hour both ways? Ask what they charge you to buy and what they pay for what you send back.

Is the rate locked in? California, for example, guarantees new net billing customers their tariff for nine years. In other places the rules can change at any time.

What's the biggest system they allow? Some utilities cap you at about your own yearly use.

Is there an interconnection fee? Some utilities charge a one-time fee just to hook you up.

When do credits reset? Some utilities zero out unused credits every month, while others let you carry them over for a whole year. That's a big difference if you have a snowy winter and a sunny summer.

A good local installer should know all of this for your area. If they don't, find a different installer.

Where Selling Solar Is Heading

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Net metering started small. Minnesota was the first US state to bring in net metering rules, back in 1983, to help a brand new industry get going.

Today, homes all over the US, Europe and Australia send solar energy back to the grid every day. Utilities have had to rethink their whole business, because their customers can now produce electricity, not just buy it.

The early generous deals are getting tighter, and batteries are taking over the job the grid used to do for free. Still, if you have a sunny roof and a fair rate, selling solar back to the grid is one of the easiest ways to reduce a power bill.

Sources

• California Public Utilities Commission: Net Energy Metering and Net Billing
• Utility Dive: Hawaii PUC chair defends decision to end retail rate net metering
• Rijksoverheid: Salderingsregeling
• Ofgem: Smart Export Guarantee (SEG)
• Ofgem: Feed-in Tariffs (FIT)
• Bundesnetzagentur: EEG-Förderung und Fördersätze
• U.S. Energy Information Administration: How much electricity does an American home use?
• U.S. Department of Energy: Homeowner's guide to going solar
• U.S. Department of Energy: Solar integration, inverters and grid services basics
• Hawaiian Electric: Safety tips for rooftop solar homeowners
• Minnesota House of Representatives: committee document on net metering