re: Op/Ed by U of CA Professor: Expect financial fallout when the fossil fuel bubble bursts

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Learn about EROI.

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This changes over time with changes in technology. The return on investment for solar has changed enormously since the costs of panels has come down.

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It's location independent.

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So you think the return on investment for a hydroelectric dam isn't location dependent? You ever see them build a dam where there is no source of water?

You think Geothermal electrical generation return on investment doesn't depend on how accessible geothermal energy is?

Consider Iceland:

85% of the total primary energy supply in Iceland is derived from domestically produced renewable energy sources. Geothermal energy provided about 65% of primary energy in 2016, the share of hydropower was 20%

Do you really think that's not related to their location? You would force Iceland to be dependent on importing oil in order for them to have a positive return on investment for their energy sector?

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...way down the list are wind, solar, etc.

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Wrong. Those should be used when they are the most efficient. Having multiple ways of generating power is superior to being limited to one source.