The second half of 2023 was the end of the solar energy party. After several years of solid growth, boosted by the initial effects of legislation -- like the U.S. Inflation Reduction Act (IRA) -- aimed at boosting renewable energy sources, the solar market hit the skids. Higher interest rates (which make financing a bit harder) and an excess supply of various industrial components have sent solar companies into a slump. It's unclear how long this downturn will last. One previous investor darling, Array Tech ...