Data sources
Every number on EnergyCostHub comes from official sources: one ENERGY STAR dataset per appliance category, and EIA electricity prices. This page shows what we hold and when it was last refreshed.
ENERGY STAR Certified Dehumidifiers
Published by the U.S. Environmental Protection Agency. Open the dataset (identifier mgiu-hu4z).
- Records stored
- 565
- Current listings (newest per brand and model)
- 560
- Published on this site
- 560
- Last successful import
- October 18, 2026
- Update check
- Weekly; downloaded only if the dataset changed
Fields we use: annual energy use, integrated energy factor, water removal capacity, type, case volume (whole-home), refrigerant, refrigerant and gwp, refrigerant charge, connected, connects using, connected features. We keep the original record for every model.
ENERGY STAR Certified Refrigerators
Published by the U.S. Environmental Protection Agency. Open the dataset (identifier p5st-her9).
- Records stored
- 4885
- Current listings (newest per brand and model)
- 4622
- Published on this site
- 60
- Last successful import
- October 18, 2026
- Update check
- Weekly; downloaded only if the dataset changed
Fields we use: annual energy use, adjusted volume, total volume, below federal standard, type, product class, defrost, compact, built-in, ice maker, through-the-door dispenser, counter depth, height, width, refrigerant, refrigerant and gwp, connected, connects using. We keep the original record for every model.
EIA residential electricity prices
Published by the U.S. Energy Information Administration through the EIA Open Data API (electricity retail sales, residential sector, average price in cents per kWh).
- Monthly prices stored
- 15655
- Earliest month
- January 2001
- Latest month
- July 2026
- Last successful import
- October 18, 2026
- Update check
- Weekly; the latest months are re-read because EIA revises them
These are statewide averages. They are not utility rates or your tariff. A few months can be missing when EIA reported no price; we show gaps rather than filling them.
What we add
Costs are calculated by us from the two sources, with the formulas on the methodology page. Reviews come from visitors and are moderated. Product links to retailers are added by hand.