Solar Calculator Nigeria 2026

Solar in Nigeria Is Really a Generator Question

Nigerian grid tariffs jumped after the April 2024 review: Band A customers (promised 20+ hours of supply a day) now pay roughly N206-N233 per kWh depending on their DisCo, while Bands B through E pay less but get fewer hours. Rates move with NERC's periodic reviews and the naira, so treat any figure here as a starting point and verify your current band and rate on your bill or with NERC. But the realistic benchmark for most households is not the grid at all - it is the petrol or diesel generator that runs when the grid is down. Fuel, oil and servicing typically push self-generation well above N350 per kWh, which is why our generator vs solar comparison is usually the right first stop.

No Practical Net Metering - Design for Self-Consumption

Unlike Kenya or Bangladesh, Nigeria has no working residential export scheme: DisCos do not credit rooftop exports in practice, so every kWh you generate only has value if you use it or store it. That changes system design in three ways:

• A battery is close to essential - it soaks up midday surplus and carries you through outages, replacing generator hours. Size it with the battery bank calculator.
• Right-sizing matters more than maxing out the roof. List your actual loads in the load calculator before buying panels.
• Hybrid inverters that blend grid, solar and battery are the default; pure grid-tie systems shut down during outages.

A Worked Lagos-Area Example

A 5 kW array with a hybrid inverter (before batteries) costs roughly N3.5m at about N700 per watt installed - tier-1 panels alone are only N250-N300 per watt, but the inverter, cabling, mounting and labour roughly double it. At about 4.3 kWh per kW per day it yields near 7,800 kWh a year. If 85% is self-consumed against a Band A rate of N210, that is about N1.4m a year avoided - a simple payback around three years, and faster still for every kWh that would otherwise come from petrol. A 10 kWh lithium bank adds roughly N2m-N3m and stretches payback, but buys silence and uptime; test that trade-off in the battery payback calculator.

Caveats

Naira depreciation moves hardware prices quickly; Band B-E customers see slower grid-offset paybacks; and cheap unbranded batteries can wipe out the savings when they fail early. Run your own quotes through the savings calculator, and confirm current tariffs with NERC before committing.

Solar calculators for other countries

Localized subsidy and tariff math for more markets:

Frequently asked questions

Not in practice. Nigeria has no functioning residential net-metering scheme, and DisCos do not credit rooftop exports. Any surplus you send out is effectively donated, so systems are designed around self-consumption and battery storage; NERC regulation in this area covers larger embedded generators rather than homes.

For most households, yes. With frequent outages and no export credit, a battery converts midday surplus into evening use and replaces generator run-time. A panels-plus-inverter system without storage only helps while the sun is up, and a pure grid-tie inverter shuts down during blackouts.

Petrol or diesel self-generation typically costs well above N350 per kWh once fuel, oil and servicing are counted - far more than Band A grid power at roughly N206-N233. Solar plus battery usually undercuts both, with the fastest payback coming from the generator hours it eliminates.

Significantly. Band A customers paying around N210 per kWh see the quickest grid-offset payback, often under three years. Band C-E customers pay less per kWh but endure longer outages, so more of their savings come from avoided generator fuel instead. Check your band on your bill and verify current rates with NERC.

About 13 kWh a day or 4,686 kWh a year on average, from about 10.1 a day in July to 14.9 a day in February, according to PVGIS data for panels at the best fixed angle. Shading, dust and orientation change the result.