Nigeria’s Securities and Exchange Commission has set 1 January 2028 as the start of mandatory IFRS S1 and S2 sustainability reporting for public-interest entities. Banks are among them. From that date, a bank’s own emissions sit in its annual report beside its loan book.
For most Nigerian banks the largest controllable source of those emissions is diesel. Headquarters, data centres and strategic branches run generators for long hours because grid supply is unreliable. Nairametrics estimates that seven in ten Nigerian businesses depend on a generator. Banks are no exception, and their critical sites cannot tolerate an outage.
Two things have changed the economics. Stationary battery pack prices fell 45% in 2025 to $70 per kWh, according to BloombergNEF. And managed energy-as-a-service models now let an owner remove diesel without buying the equipment.
Under Mansa Energy’s MET-EaaS model, Mansa designs, finances, builds, owns and operates solar and battery storage at the site. Solar charges storage first and then displaces grid power. The bank pays a contracted rate per kilowatt-hour delivered, puts in no capital, and removes a measurable block of direct emissions before its first IFRS S2 report.
The disclosure deadline is fixed. Engineering, financing and installation take time. Banks that start their transition in 2026 report a falling diesel line in 2028. Those that wait report the full figure.