Net metering explained in simple terms. Learn how it works, compare net billing and FiTs, and understand solar export policies worldwide in 2026.
Net metering is a billing setup that gives you credit for extra solar energy you send to the grid. Planning a solar system? This one detail can shape your savings more than panel brand or inverter choice. It affects how quickly your system pays for itself and how much value you get from every kilowatt-hour you produce.
This guide breaks down how net metering works, how it compares with other export models, what you might earn for excess energy, and what approvals you need before switching your system on.
What Is Net Metering?
Basic concept of solar export and import
Your panels produce electricity during daylight hours. Your home uses that energy first. If production is higher than your demand, the extra power flows out to the grid.
Later, when your panels are not producing enough, you draw electricity back from the grid. Think of it like a bank account for energy. You deposit surplus power during the day and withdraw it at night.
How billing offsets work
Under net metering, exported electricity is credited at or near the same rate you pay for power. If your utility rate is 0.15 USD per kWh and you export 100 kWh, you build up about 15 USD in credits.
Those credits reduce your future bills. Many systems settle once per year through a process called a true-up. Over those 12 months, your imports and exports are balanced. If you produce more than you use across the year, the extra credit may be paid out at a lower rate or capped, depending on local rules.
Ever wondered why two similar homes see different savings? This billing method is often the reason.
Role of smart meters
This setup depends on a meter that can track energy in both directions. A bi-directional or smart meter records what you take from the grid and what you send back.
Without it, the utility would have no reliable way to measure your exports. It is a small device, but it keeps the whole system fair.
Key Grid Export Models Explained
Net metering (retail credit model)
This model has long been the most favorable for homeowners. Credits are close to retail electricity rates, between 0.10 and 0.30 USD per kWh depending on location. Because exported energy is valued highly, savings can build up quickly.
Net billing (wholesale/export rate model)
Net billing separates buying and selling. You pay retail rates for electricity you use, while exports are credited at lower rates, between 0.03 and 0.12 USD per kWh.
Rates may change during the day. Midday exports, when solar supply is high, often earn less than evening exports where allowed.
Feed-in tariff (fixed contract payments)
Feed-in tariffs, or FiTs, pay a fixed rate for each unit of electricity you export. Contracts usually run for 10 to 25 years. Rates range from 0.05 to 0.20 USD per kWh depending on policy and system size.
This model offers predictability. You know exactly what your exported energy will earn.
Gross metering (sell-all, buy-all model)
Under gross metering, all electricity your system generates goes to the grid. You then buy all the power you use at retail rates.
It is simple to track but removes the benefit of using your own solar energy directly.
Net Metering Explained vs Other Models
Core differences in compensation
The key difference is how exported electricity is valued. Net metering credits are close to what you pay. Other models credit less for exports.
This gap can change the economics of your system in a big way.
Impact on solar ROI
Your return depends on how much of your solar production offsets high-cost electricity. Net metering shortens payback because it replaces expensive grid power.
Net billing shifts the strategy. It pushes you to use more of your solar energy as it is produced instead of sending it out.
A simple example: running your washing machine at noon instead of evening can increase your savings.
Policy trends globally
Since 2023, many regions have moved away from full retail net metering. Policymakers are introducing net billing or hybrid systems that better reflect grid costs and demand patterns.
Solar Bazaar has tracked this shift across major markets. By 2026, the direction is clear in most regions.
| Model Type | How Energy Is Measured | Export Compensation Rate (USD/kWh) | Settlement Period | Typical Regions | Key Advantage | Key Limitation |
|---|
| Net Metering | Net import/export offset | 0.10, 0.30 | Annual or monthly | USA (some states), Brazil, UAE | Simple billing, high savings | Being phased out in many regions |
| Net Billing | Separate import/export accounting | 0.03, 0.12 | Monthly (often TOU-based) | Australia, parts of USA, South Africa | Reflects real grid value | Lower export income |
| Feed-in Tariff | All exported energy paid at fixed rate | 0.05, 0.20 | Long-term contract (10, 25 yrs) | Germany, parts of EU, Asia | Predictable income | Often lower than retail rates |
| Gross Metering | All generation exported, consumption billed separately | 0.04, 0.15 | Monthly | India (some states), Middle East | Clear accounting | No self-consumption benefit |
How Buyback Rates Are Structured
Retail vs wholesale pricing
Net metering uses retail pricing, so exported electricity offsets what you would have paid. Other systems use wholesale or avoided-cost rates, which are lower.
Time-of-use and dynamic pricing
In many regions, export rates change by time of day. Midday solar exports tend to earn less because supply is high. Energy exported later in the day may earn more if demand rises.
This is why system design and usage habits matter more than many people expect.
Annual vs monthly settlement
Net metering often settles credits over a full year. This helps balance seasonal changes in production and usage.
Net billing usually settles monthly. Extra credits may not roll over in the same way, which can reduce overall value.
Documents and Approvals Required
Interconnection application
Before installation, you submit an interconnection application to your utility. This includes system size, inverter details, and site information.
Electrical permits and inspections
Local authorities require permits and inspections to confirm safety and compliance. These steps are mandatory in most regions.
Utility agreements and metering setup
You will sign an agreement that defines how your exported energy is credited. After approval, a smart meter is installed to track energy flows.
- Interconnection approval timelines: 2 to 12 weeks for residential systems under 10 kW
- Longer timelines: can extend to 3 to 6 months in constrained grids
- Costs: vary depending on region and system complexity
System Size Limits and Eligibility Rules
Residential vs commercial thresholds
Most residential systems fall between 3 kW and 15 kW. Some regions allow small commercial systems up to 50 kW under similar export rules.
Export caps and zero-export rules
Utilities may limit how much energy you can export. These caps can depend on your past usage or local grid capacity.
In some cases, systems must operate in zero-export mode, meaning no excess power is sent out.
Grid capacity constraints
As solar adoption grows, some areas are reaching grid limits. This can lead to restrictions on new connections or limits on export levels.
It is becoming a real factor in system planning.
Country-by-Country Examples
North America example
In the United States, policies vary by state. Some still offer traditional net metering, while others use net billing with time-based export pricing.
Europe example
Germany and parts of Europe rely on feed-in tariffs with fixed export rates. These systems support self-consumption while still paying for exported energy.
Asia example
India uses a mix of models. Smaller systems may qualify for net metering, while larger ones fall under net billing or gross metering depending on state rules.
Africa and Middle East example
South Africa mainly uses net billing or municipal programs. In the UAE, some emirates offer net metering-style credits, while others use net billing.
Latin America example
Brazil operates a net metering-style system that provides credits for exported energy. Changes since 2023 have reduced benefits for new installations.
How These Policies Affect Payback Period
High vs low export rates
Higher export rates shorten your payback period. Your excess energy carries more value.
Lower rates shift the focus toward using your own solar energy instead of exporting it.
Self-consumption strategies
In net billing markets, timing matters. Using appliances during daylight hours can increase savings.
Small changes in daily habits can make a noticeable difference over a year.
Role of battery storage
Batteries let you store excess energy instead of exporting it at lower rates. You can use that stored energy later when grid electricity costs more.
This adds flexibility, but it also increases system cost, so the balance needs careful thought.
Future Trends in Net Metering Explained
Decline of full net metering
Full retail net metering is becoming less common. Many regions are replacing it with models that better reflect grid costs.
Rise of dynamic pricing
Time-based pricing is becoming more common. These systems reward exports when demand is high and reduce compensation when supply is abundant.
Grid stability considerations
Utilities are focusing more on grid stability as solar adoption grows. This includes export limits, smart inverter requirements, and advanced metering.
Solar Bazaar continues to track these changes across different markets to help homeowners understand what to expect.
Next Steps
If you are considering solar, start by checking your local export policy. Find out whether your area uses net metering, net billing, or another model.
Then look at your expected system size and daily electricity use. How much energy will you export?
Tools and insights from Solar Bazaar can help you compare policies and estimate returns based on your location.
Finally, work with a qualified installer who can handle approvals and system design. Clear information at the start makes the financial outcome much easier to predict.
