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1 gen 1970 anni - Exxon lowerd the cost of solar cells

Descrizione:

Exxon funded research of Dr.Elliot Bernam to prodice a cheaper solar cell. The cost was brought down from $300 to about $20 per watt.

Aggiunto al nastro di tempo:

econ

12 nov 2018

0

0

464

Data:

1 gen 1970 anni

Adesso

~ 55 years ago

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