Ecology

Solar Savings Calculator

Estimate annual savings from a solar array.

System size (kW)

Peak sun hours/day

Electricity price ($/kWh)

System efficiency (%)

Calculated Output

Annual savings ($) 1,314

Energy produced (kWh/year) 8,760

Formula: kWh/year = kW × sun hours × 365 × efficiency

Step-by-Step Breakdown

1. Values used:

2. System size = 6 kW

3. Peak sun hours/day = 5

4. Electricity price = 0.15 $/kWh

5. System efficiency = 80 %

7. Annual savings = 1,314$

8. Energy produced = 8,760kWh/year

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The math behind it

kWh/year = system kW × peak sun hours × 365 × efficiency; savings = kWh × price.

6 kW, 5 sun hours, $0.15 → ~$1,314/year.

Sun hours?

The equivalent hours of full sunlight per day for your location.