I believe this is already the case in California. The most expensive energy by kWh but the lowest energy bills because of a statewide commitment to energy efficiency.
A carbon fee/tax/floor would be required to make things reflect their true cost in terms of climate change, this can be simulated in the app. Note that this isn't spending more money (at least up to the estimated social cost of carbon), since due to the externalities that cost is already being borne by sociery
Many Californians live in parts of the state where there is not much need for heating and cooling much of the year, which also helps keep consumption down.
A carbon fee/tax/floor would be required to make things reflect their true cost in terms of climate change, this can be simulated in the app. Note that this isn't spending more money (at least up to the estimated social cost of carbon), since due to the externalities that cost is already being borne by sociery