Solar Savings Calculator

Estimate Your Solar Savings in 30 Seconds

Enter your property type and average monthly electricity bill. We'll calculate your estimated annual savings, payback period, and 30-year return based on 2026 Singapore tariff rates — matching the full 30-year panel warranty period.

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Enter your average monthly SP electricity bill

Monthly Electricity Bill

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S$100 S$1,000 S$2,500 S$5,000

Roof orientation:

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Your personalised savings estimate will appear here.
Select your property type above to get started.

Annual Savings

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estimated per year on your electricity bill

Payback Period

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years to recover your system investment

30-Year Net Return

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total savings over full 30-year panel warranty

Cumulative Savings Over Time

Year 5

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Year 10

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Year 20

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Year 30

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Your Estimated System

Recommended size —

Est. system cost —

Annual generation —

Bill offset —

Monthly savings —

Environmental Impact

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tonnes of CO₂ offset per year

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equivalent trees planted annually

Over 30 years, your system avoids

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tonnes of CO₂ emissions

* These are estimates based on Singapore's electricity tariff of S$0.2911/kWh (2026), SP Group export rate of S$0.2046/kWh, Singapore's average solar irradiance of 3.5 peak sun hours/day, and a system performance ratio of 80% (1,100 kWh/kWp/year). System cost is estimated at S$1,000–S$1,600/kWp. Self-consumption is assumed at 70% and export at 30%. Actual savings depend on your specific roof configuration, shading, daily consumption patterns, and prevailing tariff rates. Rezeca provides a detailed personalised ROI analysis as part of every free site assessment.

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Estimate Your Solar Savings in 30 Seconds

Your Estimated System

Environmental Impact

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Solar Plan