New oil exploration takes decades as well..
Alternative energy is VERY real.. i know tons of people with Solar panels on their houses being totally grin neutral.
Companies like UPS and FedEx run their sorting facilities on Solar.
The problem with Solar/Wind is variable input flow.. our grid would have to be upgraded to handle massive inflow on it. However it's a good investment.

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Человек, который почувствовал ветер перемен, должен построить не щит от ветра, а ветряную мельницу