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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

Electric Vehicle vs Gas Car Cost Calculator

Compare the annual operating cost difference between an electric vehicle and a comparable gas car, factoring in fuel costs, maintenance, and EV tax rebates. Use it when deciding whether switching to an EV makes financial sense for your driving habits.

Miles Driven per Year (miles)

Gas Car MPG (MPG)

Gas Price per Gallon ($/gal)

EV Efficiency (miles/kWh)

Electricity Rate ($/kWh)

EV Tax Rebate ($)

Fill in the required fields to see your result.

Key differences

	Renewable Energy Investment ROI Calculator	Electric Vehicle vs Gas Car Cost Calculator
Category	Climate	Climate
Inputs required	5	6
Result	25-Year ROI Percentage (%)	Annual EV Savings ($)
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.	Compare the annual operating cost difference between an electric vehicle and a comparable gas car, factoring in fuel costs, maintenance, and EV tax rebates. Use it when deciding whether switching to an EV makes financial sense for your driving habits.