Forbes contributors publish independent expert analyses and insights. I write about green energy tech that will change your life. Have you ever noticed power lines sagging lower on a hot summer day?

On a cloudy day in mid-July, a crew of technicians carried a shiny metal orb, about the size and weight of a kid’s bowling ball, under a 110-kilovolt transmission line running near Hamburg, Germany.

With Irish electricity prices soaring, can Dynamic Line Rating be deployed quickly to get more renewable energy on the system and help protect hard-pressed consumers? Dynamic Line Rating enables ...