Measure renewable generation using practical system inputs accurately. Review energy, bills, emissions, and payback clearly. Turn raw project numbers into smarter planning choices today.
Choose a renewable source, enter technical assumptions, then submit to estimate output, savings, emissions, and payback.
These sample scenarios show how different renewable systems can be compared with one calculator.
| Scenario | Key Inputs | Estimated Annual Output | Annual Savings | Annual CO₂ Avoided |
|---|---|---|---|---|
| Solar Rooftop | 6 kW, 5.5 sun hours, 82% ratio | 9,879 kWh | $1,481.85 | 4.45 tons |
| Single Wind Turbine | 20 kW, 1 turbine, 32% factor | 56,064 kWh | $8,409.60 | 25.23 tons |
| Micro Hydro Unit | 0.18 m³/s, 12 m head, 75% efficiency, 60% factor | 83,494 kWh | $12,524.10 | 37.57 tons |
Solar model: Annual Energy = Capacity × Sun Hours × 365 × Performance Ratio
Wind model: Annual Energy = Rated Power × Turbine Count × 8760 × Capacity Factor
Hydro power model: Power (kW) = 9.81 × Flow Rate × Head × Efficiency
Hydro annual model: Annual Energy = Hydro Power × 8760 × Capacity Factor
Annual savings: Annual Energy × Electricity Rate
Net annual benefit: Annual Savings − Annual Maintenance
Simple payback: Project Cost ÷ Net Annual Benefit
Emissions avoided: Annual Energy × Grid Emission Factor
These equations combine physics-based power relationships with financial metrics, so the page estimates technical output and practical project value together.
It estimates system power, annual energy, monthly averages, annual savings, emissions avoided, lifetime energy, and simple payback for solar, wind, or hydro projects.
Capacity factor converts rated power into realistic yearly output. It reflects weather, downtime, maintenance, and operating limits, especially for wind and hydro systems.
Performance ratio accounts for temperature losses, inverter losses, wiring losses, dirt, mismatch, and other system inefficiencies. Lower values reduce annual output.
They are planning estimates. Real bills depend on tariffs, net metering, incentives, financing, taxes, maintenance, and actual site performance.
Hydropower depends on water volume and vertical drop. More flow or more head increases available gravitational energy and raises output.
Yes. Run the calculator several times with different sources and assumptions. Then compare annual energy, net benefit, emissions avoided, and payback.
It estimates cost per unit of lifetime energy. Lower values usually indicate better long-term economics, assuming the input assumptions are realistic.
The chart uses seasonal weighting for each source. Solar peaks in brighter months, wind often strengthens seasonally, and hydro can follow water availability.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.