https://www.researchgate.net/post/How_does_the_ecological_efficiency_of_a_biofuel_is_used_to_give
Have`t we used more energy to produce a renewable fuel, sometime , beginning from mining , and so on, to produce technological equipment used in the production of the fuel?
Thank You.
Bottom line: no. Mining of resources has been used, and will be used, to produce everything we need that is not grown. This includes coal-fired, hydroelectric and nuclear reactor power stations. If one only used these power stations, or green energy sources, for a year after construction, there would not be payback on the resources used and the cost to construct. But after 10, 20 years and longer, the inputs are dwarfed by the output of, say, wind or solar energy - without the continual consumption of coal, and its waste products, CO2 and particulates.
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