Observed arrival · 2026-11-06
Home Energy Lab: Ten homes, twelve calculators
A home-energy guide pairs 3D household models with calculators for estimating the cost of electricity, gas, water, appliances and more.
- For
- U.S. households estimating appliance and utility costs
- Worth noticing
- A worked example estimates about $0.26 for one hour from a 1,500 W space heater at a $0.175/kWh rate.
Field notes
For electricity, the site lays out the estimate as watts multiplied by hours to get kilowatt-hours, then multiplies by the utility rate; its example puts a 1,500 W space heater at about $0.26 for an hour at $0.175/kWh. The calculator list also reaches beyond electricity to natural gas, water and hot water, heating, lighting and laundry. The homepage describes ten U.S.-edition home models, including a manufactured home, a cold-climate house and a solar-equipped home.
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