The greening of red-state America, well under way in the Sun Belt, is now accelerating in the Midwest. Ohio and Indiana ¡ª two Republican-led U.S. states long dependent on coal power ¡ª are on the verge of solar-farm booms so staggering that their respective build-outs between now and 2027 may vie with Nevada¡¯s and trail only those of California and Texas.

Developers are expected to install 15 gigawatts¡¯ worth of new photovoltaic panels in the two states, enough to power about 12 million households. That¡¯s happening even as Ohio has moved to slow, if not thwart, renewable energy projects.

No Republican members of Congress ¡ª a group that includes the majority of members from Indiana and Ohio ¡ª voted to pass the Inflation Reduction Act, U.S. President Joe Biden¡¯s climate law that ushered in hundreds of billions of dollars in incentives for clean energy.