Nigeria Diesel Displacement Calculator

Nigeria-specific economics calculator for Lagos, Abuja, Port Harcourt, and other PHCN service areas. Input your PHCN Service Band (A through E), monthly consumption, and average outage load to compute current diesel generator cost, total monthly energy bill, and solar+battery payback economics in the post-2023 fuel-subsidy-removal environment that dramatically accelerated payback.

For full deployment context see the Nigeria country guide covering NERC embedded generation rules, NEMSA registration pathway, and Naira-pegged-to-USD pricing reality.

PHCN Service Band

Tariff: NGN 65/kWh. Daily grid supply: 14 hrs.

Monthly Total Consumption: 600 kWh

Includes both grid and generator energy. Typical Lagos middle-class: 400-700 kWh.

Average Load During Outages: 2.5 kW

Typical residential: 2-4 kW (fridge + electronics + lighting + AC). Small business: 5+ kW.

Grid Supply

Daily grid hours: 14 hrs
Daily outage hours: 10 hrs
Grid kWh/month: 0
Grid cost NGN/month: 0

Generator Supply (current)

Generator kWh/month: 750
Diesel litres/month: 833 L
Diesel cost NGN/month: 1,000,000
Diesel cost/kWh: NGN 1333/kWh

Generator vs Grid Economics

Diesel electricity costs NGN 1333/kWh — about 20.5× the PHCN tariff of NGN 65/kWh. The post-2023 fuel-subsidy removal eliminated diesel cost protection, structurally accelerating solar+battery payback in Nigeria.

Total current monthly energy cost: NGN 1,000,000 ( NGN 12,000,000/year).

Solar + Battery Replacement

Recommended PV: ~4 kWp.
Recommended battery: ~26 kWh.
Estimated total system cost: ~USD 17,600 (~NGN 26,400,000).
Payback vs current generator cost: ~2.2 years.
Payback vs total current energy cost (grid + generator): ~2.2 years.

See the Nigeria country guide for NERC embedded generation regulations, full installer ecosystem context, and SaaS-equivalent payback economics under PHCN Band A/B tariffs.

Methodology + limitations

PHCN Service Band tariffs are 2026 typical residential rates; vary by DisCo and review cycle.
Diesel cost NGN 1,200/L is 2026 post-subsidy approximation; volatile with crude prices and FX.
Grid supply hours by Band are official Service Reliability Index expectations; actual varies substantially by area and time.
Generator efficiency 30% and energy density 3 kWh/L are typical small generator approximations.
System cost USD 800/kWp + USD 400/kWh + USD 4k fixed are 2026 Nigerian-market approximations.
NGN/USD conversion ~1,500/USD is approximate 2026 typical; actual varies substantially.

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Nigeria Diesel Displacement Calculator

For full deployment context see the Nigeria country guide covering NERC embedded generation rules, NEMSA registration pathway, and Naira-pegged-to-USD pricing reality.