Energy Audit Calculator
Perform a basic energy audit by comparing your energy use to benchmarks and identifying potential savings.
Energy Use Intensity
5.4 kWh/sq ft
Energy Use Intensity vs Electricity Rate
Formula
## How to Perform a Basic Energy Audit An energy audit compares your actual energy use against benchmarks to identify saving opportunities. ### Key Metric: Energy Use Intensity (EUI) **EUI = Annual Energy / Square Footage** ### Residential Benchmarks - **Efficient home**: 3-4 kWh/sq ft/year - **Average home**: 5-6 kWh/sq ft/year - **Inefficient home**: 7+ kWh/sq ft/year Most homes can reduce energy use by 15-30% through basic efficiency improvements.
Exemplo Resolvido
A 2,000 sq ft home using 10,800 kWh electricity and 500 therms gas annually at $0.15/kWh.
- 01Energy intensity: 10,800 / 2,000 = 5.4 kWh/sq ft
- 02Electricity cost: 10,800 * $0.15 = $1,620
- 03Gas cost: 500 * $1.50 = $750
- 04Total cost: $1,620 + $750 = $2,370
- 05Potential 20% savings: $2,370 * 0.20 = $474/year
Perguntas Frequentes
What is an energy audit?
An energy audit systematically evaluates how a building uses energy and identifies opportunities to reduce consumption. Professional audits may include blower door tests and thermal imaging.
What are the most common energy waste sources?
Air leaks around windows and doors, poor insulation, inefficient HVAC systems, outdated lighting, and phantom loads from electronics are the top energy wasters in homes.
How much can an energy audit save?
Implementing recommendations from a professional energy audit typically reduces energy bills by 15-30%, saving $400-1,000 per year for an average home.