Africa Renewable Energy Projects: C&I, Mini-Grid or Utility Scale

Three quite different businesses are described by the phrase “renewable energy project in Africa”, and they have almost nothing in common except the hardware. One sells to a company, one sells to a village, one sells to a state utility. They differ in tariff by an order of magnitude, in development time by years, and in who can realistically do them. Choosing the wrong one is the most expensive mistake in the sector.

The three models side by side

Why C&I solar is the commercially obvious one

A Nigerian manufacturer running diesel generation for most of its operating hours is paying a cost per kilowatt-hour several times the price of grid power — because it is buying fuel at retail, maintaining engines, and amortising generators that run far more hours than they were specified for. Against that benchmark, solar with battery support does not need a subsidy, a feed-in tariff or a government decision. It needs a credible offtaker and a roof.

This is why the C&I segment has grown while utility-scale pipelines have stalled. The commercial logic is self-contained: the customer’s alternative is expensive, the saving is immediate and measurable, and the contract is between two private parties.

The structures used:

• Outright purchase. The host buys the system. Simplest, best returns for the host, requires capital and an appetite to own a technical asset.
• Lease or hire purchase. Fixed monthly payment, ownership transfers at the end. Common where the host wants the asset but not the capital outlay.
• Power purchase agreement. The developer owns and operates; the host pays per kilowatt-hour at a tariff below its diesel cost. Attractive to the host, but the developer carries the host’s credit risk for ten to fifteen years — which is why PPAs are offered selectively and priced for the counterparty.

Where projects fail, by model

C&I: undersized battery, oversized promise. A system designed on average daily consumption rather than the actual load profile will fail to carry the plant’s peak and the host will conclude solar does not work. Also: no load study before design, no metering to prove the saving, and no maintenance contract — panels in dusty environments lose meaningful output to soiling, and nobody cleans them unless it is somebody’s contractual job.

Mini-grid: demand that does not materialise. Household lighting and phone charging generate very little revenue per connection. Mini-grids reach viability through productive use — milling, welding, refrigeration, irrigation — and a project that does not actively build that demand will run at a fraction of design load with a tariff it cannot raise. The second failure is grid arrival: the national grid extends to the community and the tariff comparison collapses.

Utility scale: the offtaker. Everything turns on whether the utility will sign a bankable power purchase agreement, pay in hard currency or with a tariff that tracks the exchange rate, and be backed by a government guarantee that lenders accept. Many announced projects have a signed memorandum, a site and a developer, and no financial close — because that one question was never answered.

The constraints that apply to all three

• Currency. Equipment is bought in dollars; revenue is usually earned in local currency. A devaluation between financial close and commissioning can remove the entire return. The mitigation is tariff indexation, hard-currency contracts where legal, or shortening the exposure.
• Import duty and clearing. Several countries exempt or reduce duty on solar modules and some balance-of-system components, with the detail sitting in the tariff schedule by HS code and changing between budgets. The exemption is worth real money and is frequently missed because the classification was wrong.
• Quality of equipment. The market carries a large volume of substandard modules, inverters and particularly batteries. Cheap lithium cells with overstated capacity are the single most common cause of systems failing in year two.
• Operations and maintenance. Soiling, shading from new construction, inverter failure and battery degradation all reduce output predictably. A project financed on a yield assumption with no O&M budget will underperform its model.

Honest assessment

C&I solar in West Africa is a genuinely good business with a short path to cash and a customer whose alternative is worse. Mini-grids do important work but depend on concessional capital and are not a commercial proposition at purely private cost of capital in most locations. Utility-scale solar is an excellent business for the handful of developers who can manage sovereign offtake risk and an extremely poor use of time for anyone who cannot.

Anyone being offered a utility-scale opportunity with a signed memorandum and no financial close should treat the memorandum as worth approximately nothing.

What Wigmore Trading supplies

We sit on the equipment and execution side. Wigmore Trading imports, clears and installs solar and power equipment in Nigeria, which is the part of a renewable project that most often goes wrong on cost and schedule.

• Equipment procurement — modules, inverters, lithium and lead-acid storage, mounting, cable, protection and switchgear, sourced from manufacturers we can hold to a specification rather than from the cheapest offer
• Correct HS classification and duty treatment, so any available exemption on solar components is actually claimed
• Clearing, warehousing and delivery to site, including project-phased deliveries so you are not storing a year of material on a construction site
• Installation and commissioning for commercial and industrial systems — see our solar panel installation service
• Load studies and system sizing before procurement, so the battery matches the plant’s actual profile rather than its average

To estimate landed cost on an equipment package before you commit, use the landed cost calculator and the wider trade tools.

Next step: send us your load profile, or just your monthly diesel and electricity spend. We will size a system, give you a delivered-and-installed price, and tell you the payback honestly — including when it does not pay back. Contact the desk.

Related reading

• Africa Energy Infrastructure Projects: Transmission, Gas and Metering — transmission, gas supply and the metering gap
• Africa Industrial Equipment Suppliers: Buying Machines That Keep Running — buying machines that still run in year three
• Africa Infrastructure Projects: Who Actually Pays — who funds infrastructure, and where suppliers enter the chain

Duty exemptions, tariffs and equipment prices change with each budget cycle and with the exchange rate. Figures and categories here are indicative as at 2026; confirm current duty treatment and pricing before procurement.