Energy & Utilities Calculators
Solar panel ROI, electricity cost analysis, EV charging costs, home energy audit savings, commercial utility demand charges, and generator sizing calculators for homeowners, contractors, and facility managers.
6 calculators available
Energy professionals, homeowners, contractors, and facility managers make calculations that determine energy efficiency, cost savings, and system sizing. From solar panel ROI analysis and electricity cost comparison to EV charging cost estimation, home energy audit savings, commercial utility demand charges, and generator sizing, accurate numbers drive energy decisions. Our energy calculators use 2026 utility rates, equipment specifications, and energy efficiency data.
Why Use Our Energy & Utilities Calculators
Energy calculations involve complex factors that simple payback calculators miss. Solar ROI requires accounting for system degradation, net metering policies, and available tax credits. EV charging costs depend on vehicle efficiency, charging speed, and utility time-of-use rates. Commercial utility demand charges can significantly impact total energy costs. Generator sizing requires calculating starting loads, running loads, and surge requirements. Our calculators apply energy industry standards with 2026 utility rate data.
Who Are These Calculators For?
- Homeowners evaluating solar panel ROI and energy upgrades
- Electric vehicle owners calculating charging costs
- Facility managers analyzing utility demand charges and energy savings
- Contractors sizing generators and HVAC systems
- Energy auditors performing home energy assessments
Key Features
- Solar panel ROI calculator with tax credits, degradation, and net metering
- Electricity cost comparison by rate plan and usage patterns
- EV charging cost calculator by vehicle and charging speed
- Home energy audit savings with efficiency upgrade recommendations
- Commercial utility demand charge analysis and peak load management
- Generator sizing calculator with starting and running load calculations
How to Choose the Right Calculator
For solar investment decisions, use the Solar Panel ROI Calculator with 2026 tax credits and net metering policies. EV owners should use the EV Charging Cost Calculator to compare home vs public charging costs. Facility managers need the Commercial Utility Demand Charge Calculator to analyze peak loads and savings opportunities. For backup power, the Generator Sizing Calculator handles starting loads and surge requirements. The Home Energy Audit Calculator identifies efficiency upgrades with ROI estimates.
Frequently Asked Questions
What is typical solar panel ROI in 2026?
Solar ROI typically ranges from 5-10 years payback depending on location, utility rates, available tax credits (30% federal ITC), and net metering policies. High-sun regions with high electricity rates see faster payback (4-7 years). Our calculator includes 2026 federal tax credits and state-specific incentives.
How are EV charging costs calculated?
Charging cost depends on vehicle efficiency (kWh/mile), electricity rate ($/kWh), and charging efficiency. Level 2 home charging typically costs $0.04-$0.12/mile vs $0.15-$0.30/mile for public DC fast charging. Our calculator accounts for your specific vehicle and local utility rates.
What are commercial demand charges?
Demand charges are fees based on peak kW usage during billing periods, typically $10-$30/kW. A 500kW peak with $20/kW demand charge adds $10,000/month. Managing peak loads through demand response can significantly reduce commercial energy costs.
Do you store energy or usage data?
No. All calculations run entirely in your browser. We do not collect, transmit, or store any energy usage, utility bill data, or location information. Your energy data remains private.
Disclaimer
Energy calculators provide estimates based on 2026 utility rates, equipment specifications, and industry data. Actual energy savings, costs, and ROI depend on local conditions, utility rate structures, equipment performance, and installation factors. These tools are for planning and estimation purposes. Consult licensed electricians, solar installers, energy auditors, and utility representatives for project-specific guidance.