Louisiana: 35 cities covered
Across 35 Louisiana cities with a positive case for switching, the average incremental payback is about 5.9 years against a like-for-like gas furnace replacement — but that average hides real spread, which is why each city gets its own page rather than one statewide number.
- New Orleans — 362,701 people, 746 HDD
- Baton Rouge — 220,907 people, 1054 HDD
- Shreveport — 176,578 people, 1468 HDD
- Lafayette — 122,280 people, 1014 HDD
- Lake Charles — 81,157 people, 961 HDD
- Kenner — 64,650 people, 853 HDD
- Bossier City — 63,218 people, 1644 HDD
- Monroe — 46,622 people, 1662 HDD
- Alexandria — 43,133 people, 1531 HDD
- Houma — 31,671 people, 981 HDD
- Central — 30,161 people, 1054 HDD
- Slidell — 28,440 people, 1172 HDD
- New Iberia — 26,849 people, 1149 HDD
- Hammond — 23,426 people, 1363 HDD
- Ruston — 22,330 people, 1662 HDD
- Sulphur — 20,572 people, 941 HDD
- Zachary — 20,370 people, 1054 HDD
- Youngsville — 19,038 people, 1218 HDD
- Gretna — 17,185 people, 964 HDD
- Natchitoches — 17,165 people, 1687 HDD
- Thibodaux — 15,569 people, 981 HDD
- Broussard — 15,312 people, 1014 HDD
- Opelousas — 15,176 people, 1430 HDD
- Pineville — 13,966 people, 1578 HDD
- Gonzales — 13,837 people, 1080 HDD
- Mandeville — 12,973 people, 1172 HDD
- Carencro — 12,883 people, 1014 HDD
- West Monroe — 12,476 people, 1662 HDD
- Baker — 12,147 people, 1054 HDD
- Covington — 11,686 people, 1363 HDD
- Crowley — 11,216 people, 1014 HDD
- Minden — 11,195 people, 1962 HDD
- Abbeville — 10,902 people, 1159 HDD
- Morgan City — 10,813 people, 925 HDD
- Bogalusa — 10,367 people, 1473 HDD