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What net metering means
Net metering is a system where the electricity you export to the grid is used to offset the electricity you import from it. In simple terms, your meter “nets off” what you use against what you produce. If you export more than you import, you may end up with little or nothing to pay for electricity in that period.
This model is common in some countries, but it is not how solar export usually works in the UK today. Instead of a direct one-to-one offset, UK homes normally get paid separately for electricity sent to the grid. That means your bill and your export payment are handled as two different things.
What getting paid for export means
When you send surplus solar electricity to the grid, you can receive a payment for each unit exported. In the UK, this is typically done through the Smart Export Guarantee, often called SEG. Your supplier sets the export rate, and payments are usually based on how much electricity your system exports.
This is different from net metering because export does not directly reduce your import bill at the same rate. Instead, you pay for the electricity you buy from the grid, and separately earn money for what you sell back. The amount you receive depends on your tariff and how much power you export.
The main difference
The biggest difference is the way value is calculated. Net metering offsets imported electricity with exported electricity, usually at or near the same retail rate. Paying for export means you are compensated for surplus electricity, but your imported electricity is still billed normally.
With net metering, the benefit is often easier to understand because export reduces your bill directly. With export payments, the benefit is split between lower self-use bills and income from electricity sold back to the grid. For most UK homes, the savings come mainly from using your own solar power during the day and earning a modest payment for the rest.
What this means for UK homeowners
If you are considering solar panels in the UK, it is useful to think in terms of self-consumption and export payments rather than net metering. The more of your solar power you use at home, the more you save on electricity purchases. Any extra power sent to the grid can then earn a separate payment.
Battery storage, timers, and smart appliances can help you use more of your own solar generation. That usually improves the overall value of your system. In practice, UK solar economics are about cutting imports first and getting paid for exports second.
Frequently Asked Questions
Net metering usually credits you for excess solar electricity sent to the grid at or near your retail electricity rate, while getting paid for solar energy sent to the grid typically means you receive a separate export payment or feed-in tariff that may be lower or structured differently from retail rates.
Net metering can reduce your bill by offsetting the electricity you buy from the grid, often producing larger savings. Getting paid for solar energy sent to the grid creates export revenue, but your bill savings may be smaller if you still buy power at retail rates without full crediting.
It depends on your utility rates, solar production, usage patterns, and local policy. Net metering is often better when it credits exports at retail value, while export payments can be better in markets where rates are stable and generous or where net metering is limited.
In net metering, exported solar power is usually applied as credits that offset imported electricity usage. In export payment programs, the utility or another buyer typically pays you separately for each kilowatt-hour exported, and that payment may appear on a different billing statement or payout schedule.
Eligibility depends on local utility rules, state or national regulations, system size, interconnection approval, and whether the program accepts residential, commercial, or community solar systems. Some areas allow both options, while others limit net metering or only offer export compensation.
You usually apply through your utility or grid operator after installing a compliant solar system and obtaining interconnection approval. The application often includes system details, equipment specifications, inspection results, and any required agreements for credits or export payments.
You generally need solar panels, an inverter, utility-approved interconnection hardware, and a bidirectional meter that can measure electricity imported from and exported to the grid. Some export payment programs may also require special monitoring or metering equipment.
Yes, most programs require a bi-directional meter or smart meter that can measure both electricity drawn from the grid and excess electricity exported to it. This allows the utility to calculate credits or payments accurately.
Net metering often uses retail electricity rates or a credit value tied to retail pricing. Export payment programs may use a fixed feed-in tariff, wholesale market price, time-of-use export rate, or another formula that can vary by time and location.
With time-of-use pricing, the value of exported solar energy may depend on when it is produced and sent to the grid. Net metering may still credit exports against usage, but the credit value can change by time period, while export payment programs often pay more during high-demand hours.
Yes, batteries can increase self-consumption by storing daytime solar energy for evening use, which may reduce reliance on grid purchases. This can be especially helpful where export payments are low or where net metering rules are less favorable.
Tax treatment depends on your country, state, and whether the income is considered a rebate, credit, or taxable revenue. In some places, net metering credits are not taxed, while direct payments for exported energy may be treated as income.
Policies vary widely. Some regions offer full retail net metering, others offer reduced export credit rates, and some use feed-in tariffs or competitive wholesale export compensation. Local utility rules and regulators determine the exact terms.
If a program changes, new applicants may be moved to different compensation rules, such as lower export rates or different billing structures. Existing customers may be grandfathered under older rules for a set period, depending on local policy.
Larger systems can export more energy, which may make export compensation more important. However, some utilities cap net metering eligibility or require additional reviews for larger systems, while export payment programs may also have size limits or tiered rates.
Yes, businesses can benefit from both models. Net metering can offset high daytime electricity use, while export payments can provide revenue for excess production. The best option depends on load profile, tariff structure, and local interconnection rules.
Net metering and export payments only apply to grid-tied systems that can send electricity to the utility grid. Off-grid systems do not participate in either model because they are not interconnected with the public grid.
Main risks include changing regulations, reduced export compensation, utility fees, interconnection delays, and inaccurate assumptions about future energy prices. The value of your system can also vary based on how much of your solar generation you self-consume versus export.
If your solar system is offline, you produce less electricity to offset bills or earn export payments. Regular maintenance helps maximize production, which improves both net metering savings and the amount of energy you can sell or credit to the grid.
Faster payback usually comes from the option that gives the highest effective value for each kilowatt-hour your system produces. In many places, net metering pays back faster because exported power offsets retail purchases, but a strong export tariff can sometimes compete if retail rates are low.
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