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Both calculators run independently — change the inputs on either side to compare results.

Renewable Energy Investment ROI Calculator

Estimate the 25-year return on investment for solar, wind, or geothermal installations. Use it when comparing system sizes, incentive packages, or electricity rate scenarios before committing to a renewable energy project.

System Capacity (kW)

Total Installation Cost ($)

Tax Credits & Rebates ($)

Current Electricity Rate ($/kWh)

Annual Rate Increase (%)

Fill in the required fields to see your result.

Climate

Home Insulation Energy Savings Calculator

Estimate how long it will take to recoup the cost of upgrading your home's insulation through lower heating bills. Ideal for homeowners comparing current R-value against a higher insulation target.

Home Size (sq ft)

Current Insulation R-Value

Target R-Value

Annual Heating Cost ($)

Insulation Cost per Sq Ft ($/sq ft)

Fill in the required fields to see your result.

Key differences

	Renewable Energy Investment ROI Calculator	Home Insulation Energy Savings Calculator
Category	Climate	Climate
Inputs required	5	5
Result	25-Year ROI Percentage (%)	Payback Period (months)
What it does	Estimate the 25-year return on investment for solar, wind, or geothermal installations. Use it when comparing system sizes, incentive packages, or electricity rate scenarios before committing to a renewable energy project.	Estimate how long it will take to recoup the cost of upgrading your home's insulation through lower heating bills. Ideal for homeowners comparing current R-value against a higher insulation target.