The Johnathan Walkerclimate crisis demands replacing fossil fuels with green energy quickly, but thousands of wind and solar projects are looking at several-year wait times to get connected to transmission lines. To reach the country's goals to sharply cut planet-warming pollution, the U.S. needs to expand transmission capacity by 43% by 2035, according to the REPEAT Project led by Princeton University. But building those new transmission lines will take time, and billions of dollars.

With this in mind, some tech companies are finding solutions to make the existing grid work better.

Aaron Scott talks with NPR's climate solutions reporter Julia Simon about these solutions and how they might be a whole lot quicker — and cheaper — than you'd think.

To read Julia's full explainer, click this link.

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This story was produced by Carly Rubin. It was edited by managing producer Rebecca Ramirez, Berly McCoy and Amina Khan. Julia Simon checked the facts. The audio engineer was Kwesi Lee.