Hidroelektrik yenilenebilir bir kaynaktır ama petrol, kömür ve doğal gaz değil.
- Hydropower is a renewable resource, but oil, coal and natural gas are not.
Güneydoğu kömür, ham petrol ve doğal gaz ile ilgili önemli bir enerji üreticisidir.
- The Southeast is a major energy producer of coal, crude oil, and natural gas.
Natural-gas prices.
... from 40 to American natural gas ...
... Number three, we've got to control our own energy. Now, not only oil and natural gas, ...