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Environment & Energy Report

Wind and Solar Got So Cheap Other Green Ideas Were Left Behind

Nov. 16, 2018, 12:07 PM

Wind and solar power have gotten so cheap that other forms of renewable energy have been relegated to science labs and the dustbins of history.

As wind turbines and solar farms sprout around the world, investments in other technologies that produce power—from waves, geothermal steam pockets, rivers, biomass and more—have dropped off a cliff. Even those gleaming mirrors in the desert that focus sunshine onto thermal generators can’t compete on price with photovoltaic panels, and they probably never will.

As the modern green energy industry was starting to take off, investors poured money into all kinds of ideas. Bets on...

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