Interactive Simulation
Nordic Solar & Battery ROI Yield Engine
Simulate annual generation yields, spring albedo reflections, spot market export returns, and battery self-consumption enhancements calibrated for Finnish geographical latitudes.
System Parameters
Array Capacity (kWp)
12.0 kWp
3 kWp (Compact)
15 kWp (Standard)
30 kWp (Heavy)
Current Retail Electricity Tariff
17.0 c/kWh
10 c/kWh
22 c/kWh
35 c/kWh
Integrated Battery Storage Add-On
MODELING ASSUMPTIONS (FINLAND):
- Global horizontal irradiation calibrated to 920 kWh/kWp/year baseline.
- Bifacial ground snow reflection coefficient (+7% spring bonus).
- Inverter conversion efficiency calculated at 98.4%.
- Household Tax Credit (Kotitalousvähennys) applied to 2026 installation labor limits.
Estimated Annual Generation
11,813 kWh
Annual Savings & Revenue
€1,740
Estimated Net Payback
7.1 Yrs
Annual CO2 Offset
1.7 t
30-Year Net Gain
€48,500+