Data Sources
Every numerical default on KilowattKit traces to one of the official sources listed below. We review and update rate data quarterly.
Last reviewed: June 13, 2026
🇺🇸 United States
Residential electricity rate: $0.1745/kWh (US average)
Last verified: Apr 2026
Residential gas rate: $1.20/therm (US average)
Last verified: Apr 2026
Heat pump COP ranges, furnace AFUE guidance, thermostat savings methodology
Last verified: Apr 2026
Appliance efficiency benchmarks, AFUE definitions
Last verified: Apr 2026
Electric vehicle efficiency ratings (miles/kWh) by model
Last verified: Apr 2026
US average daily miles driven: 37 miles/day
Last verified: Apr 2026
🇬🇧 United Kingdom
Residential electricity rate: £0.2750/kWh; standing charge: £0.0680/kWh gas
Last verified: Apr 2026
🇨🇦 Canada
Residential electricity rate: C$0.1850/kWh (national average)
Last verified: Apr 2026
🇦🇺 Australia
Residential electricity rate: A$0.3200/kWh (national average)
Last verified: Apr 2026
Australian home energy efficiency benchmarks and methodology
Last verified: Apr 2026
Found an outdated figure?
Email [email protected] with the source and the correct figure. We review and update within 7 business days and log all changes on our updates page.