President Biden has announced $7 billion in federal grants for residential solar projects aimed at serving 900,000 low- and middle-income households. The grants are expected to reduce emissions by 30 million metric tons of carbon dioxide and save households $350 million annually. The announcement comes as Biden looks to energize young voters for his reelection campaign. Solar energy is gaining traction as a key renewable energy source, and the grants could make it more accessible for many Americans.