As the moon passes in front of the sun on April 8, its shadow will knock down solar power production in a sweeping band across the United States from Texas to Maine, home to more than 31 million people.

The United States currently has more than 139 gigawatts of solar electricity generation capacity. That’s more than two and a half times the amount of solar that was on the grid during the last total eclipse in 2017. The upcoming eclipse will also shade a path twice as wide as the last one. Though much of the country will see some decline in solar power production, the biggest decrease will be directly under the moon’s shadow.

For the most part, power grid operators…