Of course, even those without solar may be getting electricity generated from sources less problematic than petroleum.
Coal is probably the source that competes with or is worse than petroleum from a pollution and CO2 standpoint. However, in the US, it and all other sources are less connected to international issues than petroleum, meaning that anything other than petroleum brings less baggage in terms of trade balance, foreign policy problems, petro-states using oil money to start wars, etc..
Frequently Asked Questions (FAQs) - U.S. Energy Information Administration (EIA) lists the following in the US as sources of electricity generation in 2021:
* 60.8% Fossil fuel
* 38.3% Natural gas
* 21.8% Coal
* 0.5% Petroleum
* 18.9% Nuclear
* 20.1% Renewables
* 9.2% Wind
* 6.3% Hydropower
* 2.8% Solar
* 1.3% Biomass
* 0.4% Geothermal
However, the source of grid electricity varies considerably by state within the US. Go to
United States - U.S. Energy Information Administration (EIA) , click on a state, then click on the Electricity tab in the table to see what is used to generate electricity in the state.