Are any of the worlds so called Energy Efficcient Devices really any use????
Will a solar pannel ever save as much energy as it uses to manufacture and distribute it, in its entire serviciable life?
Will other devices also do the above??
would you ever get finantial and energy payback on the use or would the device fail before it even touches the overall energy consumption in manufacture.
how much energy goes into desposal of the said items and manufacture of the new ones?
Best Answer - Chosen by Voters
-----------------------------------on energy efficiency:Most of the measures can have a very short payback time due to very high energy prices. Generally less than 5 years.
This is valid for the industry but also home appliances: e.g. a new energy saving fridge might pay itself off after 5 years!
It is a net benefit for almost everybody and every step of the economy.
------------------------------------on power generation
ROE: Return on Energy
Solar cells in a sunny region: 4-10 years ROE ; liftime: over 60 years
Wind mill on a good site: 4-7 years ROE; lifetome: 20-25 years
---* financial aspects:
large wind power is competitive even without subsidies against coal and nuclear
solar power is still at an early stage and needs to be subsidized in order to accelerate its development and deployment. 100% 2 Votes
Other Answers (0)
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