Wikipedia links, for better or worse:
Electricity, Hydrogen fuel, Wind power, Solar power, Ocean Marine current power, Tidal power, salt and/or liquid Thorium-based nuclear power, Uranium-based Nuclear power, Hybrid electric vehicle, Petro-dollar, Peak oil, Petroleum, Gasoline, Diesel fuel, Natural gas is primarily Methane, Hydraulic fracturing aka Fracking, Fossil fuel, Fuel oil, Coal, Lithium-ion battery, Electric battery, Energy storage (many great options), Energy conservation, Energy efficiency, Alternative energy (is any source but fossil fuel), Free energy, Free energy suppression conspiracy theory
FYI: The "fossil" in "fossil fuel" is an old myth.
Other uses of "Energy" and related subs:
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