| Source | Used for | Licence |
|---|
| U.S. EIA Electric Power Monthly, Table 5.6.B | Residential electricity price by state, Year-to-Date through July 2026 and 2025 (Cents per Kilowatthour) | U.S. government work, public domain |
| U.S. EIA Natural Gas Prices | Residential gas price by state, 2025 (converted at 1 Mcf = 10.37 therms) | Public domain |
| NASA POWER climatology | Solar irradiance, heating and cooling degree days, 2001–2025 average, fetched for your area | NASA data, no restrictions; credit NASA POWER |
| WRI Aqueduct 4.0 | Baseline water stress for your sub-basin, via the Esri-hosted Aqueduct feature service | CC BY 4.0, World Resources Institute |
| U.S. DOE Energy Saver | Thermostat setback and water-heating rules | Public domain |
| EPA WaterSense | Showerhead and toilet flow figures | Public domain |
| ENERGY STAR | LED, air sealing and heat pump figures | Public domain (ENERGY STAR is a registered mark of the U.S. EPA; used to refer to the program) |
| Berkeley Lab, Tracking the Sun | Median cash residential solar price, $3.00/W, 2025 installs | Cited fact |
| Aeonis Address (addr.aeonis.pro) | Optional address lookup | See its attribution page |
| Tesseract.js | On-device bill reading | Apache-2.0 |
| Inter typeface (share card) | Text on share images | SIL Open Font License 1.1 |