Electric bikes parading through city streets. The afternoon light glinting off clusters of floating solar panels . Neighbors guiding visitors through homes warmed by heat pumps, battery storage systems glowing on walls.

These sound like scenes from a clean energy expo or a hopeful science fiction novel, but they’re neither. They’re just a few of the hundreds of events planned for “Sun Day,” a new national day of action on September 21 meant to celebrate the momentum of clean technology — and to confront the political and institutional barriers slowing its wider adoption. Grist relies on the support of generous readers like you to cover the stories that matter most. Donate today to help keep our site free.

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