The Philippines' fossil fuel sector is unsustainable, being dependent on the import of nonrenewable fuel, including petroleum, but has significant potential in the renewable energy sector.

Natural gas is a finite nonrenewable fuel that will be exhausted.

Their fate also has implications for the environment and the pace with which the country uses up nonrenewable fuels like coal and natural gas.

Oil prices are rising; reserves of oil, coal and natural gas are being depleted; and the continued use of nonrenewable fuels poses threats to the environment.

But that would hardly matter-unless some miracle happened, they would run out of nonrenewable fuel in four.

Hydrogen fuel production has gained increased attention as oil and other nonrenewable fuels become increasingly depleted and expensive.

Europe is a leading producer of fossil fuels [nonrenewable fuels] such as natural gas, coal and petroleum.

In its decision today, the commission noted that the dam did produce energy that would otherwise probably be produced by nonrenewable fossil fuels.

Examples of baseload plants using nonrenewable fuels include nuclear and coal-fired plants.

The use of expensive, nonrenewable fossil fuels is greatly reduced, although a backup system is required for periods without sun.