Solar energy in Nigeria: how to assess the costs and business opportunity

The generator stops during a busy afternoon, and another customer leaves. A solar proposal arrives promising freedom from fuel bills. Before deciding, you need to know which loads it will support, when they must run and what the whole system will cost over its life.

Solar can solve important energy problems. It does not make every installation affordable or every installer profitable. A useful assessment connects the technical design to the customer’s actual work and cash flow.

Start with the load, not the panel count

List the appliances and equipment, their power ratings and typical hours of use. Note items with starting surges and equipment that must keep running at night. Have a competent professional verify the survey and design.

For illustration, a 100-watt load running for ten hours uses one kilowatt-hour of energy before system losses. A system’s power rating and the energy a battery can deliver are different measures.

Ask the installer to explain generation assumptions, usable battery capacity, losses, weather limitations and how the system will behave when demand exceeds supply. A confident sales claim is not a design calculation.

Compare complete proposals

Obtain itemised quotations with identifiable components, warranty terms, installation, protection, commissioning and after-sales support. Clarify who honours the warranty and whether labour, transport and replacement parts are included.

Include maintenance, insurance where appropriate, battery replacement, finance costs and any remaining grid or generator use. Compare proposals that support the same loads and service level, rather than simply choosing the lowest total price.

Use qualified installers and appropriate electrical protection. This article is a financial assessment guide, not an instruction to install or modify electrical equipment yourself.

Recalculate the payback

Suppose, as an illustration, a system costs ₦2 million and reduces net annual energy spending by ₦400,000 after routine maintenance. Simple payback is five years, ignoring finance, replacement costs, changes in use and the time value of money.

If annual savings are only ₦200,000, the same calculation gives ten years. A battery replacement before that point can change the result materially. Use measured consumption and dated local quotations in your own comparison.

The earlier article paired broad cost estimates with a four-to-five-year payback and suggested annual investment returns of 30–45%. Those claims are not a reliable basis for a specific household or business and have been removed.

Understand what public programmes establish

In December 2023, the World Bank approved $750 million financing for Nigeria’s DARES project, supporting distributed renewable electricity access. That shows the policy focus; it is not a blanket grant offer to every applicant.

The Ministry of Power’s January 2026 statement describes the programme’s direction. Check the implementing agency’s actual eligibility and application process before spending money to pursue support.

Test a solar business through service quality

Sales, installation, maintenance and equipment supply have different responsibilities. Choose the role you can perform competently and lawfully, with the necessary technical partners and insurance.

Track the cost of acquiring a customer, surveying the site, delivering equipment, installation, warranty visits and callbacks. Revenue from ten installations is not profit unless those costs, overhead, tax and payment delays are included.

Begin with a small number of properly designed jobs and documented after-sales support. Do not finance rapid expansion using promises about demand that have not turned into paid orders.

For another way to test a practical service, read the Moneywise guide to starting to earn. Your next solar decision should begin with a measured need and an itemised proposal, not a promised return.