Five cities leading Nigeria’s solar revival

For decades, the sound of Nigeria’s economy has been the cough and rattle of a diesel generator. It has been the background noise of hospitals, universities, filling stations, corner shops, and factory floors, the sonic signature of a country that sits atop vast oil reserves yet cannot reliably keep its own lights on. That sound is beginning to change.

Across five of Nigeria’s most consequential cities, solar is moving from rooftop novelty to genuine infrastructure.

The drivers are not idealism but arithmetic: the cost of commercial solar installations in naira terms fell roughly 35 percent between 2022 and 2025, even accounting for currency depreciation, while diesel prices went in the opposite direction.

Add a raft of regulatory reforms, the Nigerian Electricity Regulatory Commission’s 2026 Mini-Grid Regulations expanded allowable mini-grid capacity from 1 megawatt to as much as 10MW for interconnected systems, and the investment calculus has shifted decisively.

Nigeria pulled in approximately $425 million in 2025 to build eight renewable energy manufacturing facilities nationwide. The government’s DARES programme, backed by $750 million in public funding, is designed to draw more than $1 billion in additional private capital and connect 17.5 million Nigerians to reliable electricity through 1,350 solar mini-grids. The scale is ambitious. What is striking is how much activity is already visible on the ground.

Lagos— The commercial engine

Nigeria’s commercial capital is where the solar economy is most visibly mature. More than 100 solar companies now operate across the city, competing for contracts from manufacturers, retailers, and landlords who have stopped waiting for the grid to improve.

Daystar Power has installed a 4.2 megawatt system with battery storage at Nigerian Breweries in Lagos, generating more than 5,200 megawatt-hours annually. Seven-Up Bottling has taken 10.5 megawatts across five factories.

Locally assembled solar panels rolling out of Lagos factories are already being exported to Accra, Ghana, a detail that Abba Aliyu, managing director of the Rural Electrification Agency, has cited as evidence of Nigeria’s emerging position as a regional manufacturing hub. The Lagos State Government has set a target of 1 gigawatt of photovoltaic capacity before 2030, with a proposed mix of 60 percentcommercial and industrial, 20 percent residential, and 20 percent government facilities.

Kano — The northern anchor

Kano’s solar story runs through its institutions. Eauxwell Nigeria Limited, the country’s largest solar engineering and construction firm, has delivered an 11.8 megawatt solar project in the city, among the largest individual installations in the country. Sterling and Wilson Nigeria completed a 3.5 megawatt hybrid system at Bayero University. Manufacturers in Kano, as in Lagos and Port Harcourt, have increasingly moved to on-site renewables to escape grid outages and lock in electricity at fixed tariffs below $0.15 per kilowatt-hour, compared with diesel costs that can exceed $0.30. The economics are not subtle.

Kano also sits at the heart of Nigeria’s northern solar corridor, where daily solar irradiation of 5 to 6.5 kilowatt-hours per square meter, well above what European solar projects can achieve, gives photovoltaic systems capacity factors 40 to 60 percent higher than many installations on the continent.

Abuja — The Institutional Convert

The federal capital has become a testing ground for public sector solarisation. EM-ONE Energy Solutions has built a 1.52-megawatt solar microgrid serving 37 government buildings in Abuja, as well as a 3.3 megawatt system with battery storage at the University of Abuja. Havenhill Synergy, an Abuja-based firm, has focused on off-grid and mini-grid deployments in peri-urban zones where grid access is thin.

The Rural Electrification Agency has earmarked N100 billion of its N170 billion 2026 budget specifically for the National Public Sector Solarisation scheme, targeting hybrid mini-grids for federal institutions across the capital and beyond. The National Hospital in Abuja is among the facilities already receiving this infrastructure. In March 2026, the United Nations commissioned a solar installation at its own headquarters building in the city — a gesture that, more than anything, signals where institutional confidence now sits.

Port Harcourt— The Industrial Pivot

Nigeria’s oil hub is acquiring a parallel identity. Eauxwell’s 10.8 megawatt solar plant in Port Harcourt, paired with a 16 megawatt-hour battery storage system, is one of the largest integrated solar and storage projects in West Africa. CrossBoundary Energy, which has deployed solar across the commercial and industrial sector throughout Nigeria, has a $10 million expansion underway in Port Harcourt and Enugu combining solar generation with battery storage under long-term power purchase agreements.

The pivot matters symbolically as much as technically. A city whose entire economic identity has been built around fossil fuel extraction is now hosting some of the country’s most sophisticated clean energy infrastructure. Lithium-iron-phosphate battery packs, better suited to tropical heat than earlier chemistries, have become increasingly available through distributors in Port Harcourt, supporting that expansion.

Enugu — The Policy Laboratory

Enugu has emerged as one of the more interesting regulatory experiments in the country. The state government signed grant agreements this month with four renewable energy developers — including Darway Coast Nigeria and Sea Solar Energy — to bring 24-hour electricity to four rural communities that have never had reliable power, backed by funding from the German development agency GIZ and the European Union through the Nigerian Energy Support Programme.

CrossBoundary Energy has also committed to a $10 million expansion into Enugu specifically, part of a broader $60 million partnership with Engie targeting 150,000 mini-grid connections. Solar mini-grid projects in Enugu state have already demonstrated measurable returns: agricultural processing centres, rice mills, and cold storage facilities that were previously running on diesel have shifted to solar, cutting operating costs and stabilising supply chains.

What comes next

Nigeria’s total installed renewable capacity is projected to grow from roughly 3.1 gigawatts in 2024 to 5 gigawatts by 2029. Local manufacturing capacity has already expanded from 120 megawatts two years ago to approximately 300 megawatts in 2026, with 3.7 gigawatts of additional capacity in the pipeline as the country positions itself as a regional clean energy manufacturer.

Countries including Mozambique, Burkina Faso, Niger, Chad, and Mauritania are studying Nigeria’s mini-grid regulatory framework for potential adoption. Neighbouring Benin Republic and Mauritius are in active dialogue with Abuja about replicating the model.

The diesel generator is not finished in Nigeria. It remains too embedded in too many sectors, and the grid remains too unreliable, for that. But in Lagos factories, Kano universities, Abuja hospitals, Port Harcourt industrial parks, and Enugu farming communities, solar is no longer the alternative. It is becoming the default.