Ghana PURC Residential Solar Calculator

Ghana-specific economics calculator for Accra, Kumasi, Tamale, and other ECG/NEDCo distribution areas. Input monthly consumption + PV array size to compute current PURC progressive-tariff bill, post-solar bill, export revenue under the Renewable Energy Act 832/1045 framework, and payback economics accounting for Cedi exchange volatility.

Monthly Consumption: 450 kWh

Current bracket: 301-600 kWh at GHS 1.58/kWh

PV Array Size: 4 kWp

Accra coastal ~1,500 kWh/kWp/year; drier northern Ghana ~1,700-1,900 kWh/kWp.

Solar Self-Consumption Ratio: 65%

Without Solar (current)

Monthly bill: GHS 577
Yearly bill: GHS 6,918

With Solar (post-installation)

PV monthly generation: 500 kWh
Self-consumed: 325 kWh
Grid import: 125 kWh
Exported: 175 kWh
New monthly bill: GHS 128

Annual Benefit

Bill savings/year: GHS 5,385
Export revenue/year (at GHS 0.87/kWh): GHS 1,825
Total yearly benefit: GHS 7,210

Estimated system cost ~GHS 88,800 (USD 7,400). Payback: ~12.3 years.

See the Ghana country guide for ECG (south) and NEDCo (north) application pathway under Renewable Energy Act 832/1045 + Energy Commission licensing above 5 kW.

Methodology + limitations

PURC tariff brackets 2026 typical residential; volatile with Cedi exchange rate adjustments.
Accra coastal ~1,500 kWh/kWp/year typical; verify local irradiance.
Export rate assumed 55% of marginal tariff.
System cost ~USD 850/kWp + USD 4k fixed is West African standard-tier 2026 approximation.
GHS/USD conversion ~12 GHS/USD approximate 2026 typical; substantial volatility.

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Battery and inverter selection.

Ghana country guide Battery comparison