Residential Solar Savings Calculator
Estimate potential electricity bill reductions, export credits, and 25-year cumulative financial savings for your landed property.
Calculator Inputs
Current SP export credit: 25.81¢/kWh
Applicable from 1 July to 30 September 2026 under the Simplified Credit Treatment scheme. The rate is based on the prevailing regulated electricity tariff less the applicable grid charge.
SP export rates are reviewed quarterly and may change.
Calculations use a fixed 540W solar panel and an estimated generation range of 52–54 kWh per panel per month.
10.8 kWp
20 x 540W Fixed Solar Panels (1060 kWh/mth)
S$356
Self-consumption savings + grid export credits
S$320
Direct utility tariff offset (920 kWh)
S$36
Calculated using the SP export rate of 25.81¢/kWh, effective 1 July to 30 September 2026.
S$444.00
Calculated electricity bill after solar savings and export credit offsets
25-Year Cumulative Savings Projection
Includes self-consumption savings and export credits with 0.5% annual panel degradation.
Monthly Generation Allocation (1060 kWh/mth)
Based on an estimated generation range of 1040–1080 kWh per month (20 x 540W panels).
Export Credit & Estimation Disclaimer:
Export-credit calculations are estimates only. The SP Group rate shown applies to the stated quarterly period and may change when electricity tariffs or grid charges are revised. Customers purchasing electricity from another retailer may receive export payments based on fluctuating wholesale electricity prices. Eligibility and actual credits remain subject to the applicable payment scheme.
Ready to verify with a 3D Site Survey?
Request an engineer visit to confirm roof angles and electrical board layout.
Calculations use a fixed 540W solar panel and an estimated generation range of 52–54 kWh per panel per month. Future export credit rates and electricity tariffs may fluctuate over time and are not guaranteed to remain unchanged.
Calculations use a fixed 540W solar panel and an estimated generation range of 52–54 kWh per panel per month. Future export credit rates and electricity tariffs may fluctuate over time and are not guaranteed to remain unchanged. Actual savings depend on rooftop shading, weather conditions, electricity consumption, and utility retailer arrangements.