Maine's shift from heating oil to heat pumps. Maine is the state with the largest use of heating oil in winter, 50% of homes use heating oil. It was because utilities found it hard to set up transmission pipelines in a sparsely populated state that this happened. Now heat pumps which have no carbon emissions and take heat from outside and transfer it to the inside of homes are effective in the coldest weather and far, far better for Maine than heating oil. About 100,000 homes have heat pumps installed in recent years, and another 175,000 will have heat pumps installed by 2027. State rebates cut the cost of $12000 for heat pumps to half that and there is another $2000 tax rebate. Users like the even distribution of heat and had problems with the cold parts of the house when using heating oil. Some rave about it. If all homes in America use heat pumps it would be like taking 32 million cars off the road, according to one estimate.