EROEI: energy return on energy invested?

Net EROEI is the best metric for comparing end-to-end energy efficiencies, explored in this 13-page report. Wind and solar currently have EROEIs that are lower and ‘slower’ than today’s global energy mix; stoking upside to energy demand and capex. But future wind and solar EROEIs could improve 2-6x. This will be the make-or-break factor determining the ultimate share of renewables?

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