"Fuel reserves" refers to a stockpile or supply of fuel that is stored for future use in case of scarcity or emergency situations when fuel may be unavailable or in short supply. Full definition
In the bitter competition for dwindling energy sources, the less developed countries without fossil fuel reserves of their own will inevitable be the losers. (sindark.com)
In order to stand a chance of surviving climate change, we need to keep 80 percent of known fossil fuel reserves in the ground. (foe.org)
What remains are stored in the muscles as fuel reserves for the body. (essentialketo.com)