Answer to Question #194949 in Physics for yash negi

Question

HOW MUCH (ch4) DOES IT TAKE TO GENERATE 1GWH OF ELECTRICITY

Answer 1

1 kg of methane (CH₄) produces 55.50 MJ of energy. Assuming that 100% of heat of combustion is used to produce electricity, the mass required to generate 1 GWh of energy can be calculated by dividing the value of electrical energy and heat of combustion expressed in the same units:

$$E_\text{electrical}=1·10^9·3600=3.6·10^{12}\text{ J}.$$

The mass of methane:

$$m=\frac Eq=\frac{3.6·10^{12}}{55·10^6}=720·10^3\text{ kg}.$$