ITIF：为什么风能和太阳能需要天然气：应对可变性的现实方法报告（英文版）

The share of U.S. electricity produced by wind and solar (“variable renewable energy” sources, or VRE) is growing very rapidly now. While it’s possible that firm clean power sources (e.g., nuclear, geothermal, or fusion) will expand dramatically, that seems unlikely barring important technological breakthroughs. VRE is expanding quickly, and will likely become dominant in coming decades. As a result, variability in electricity supply is becoming a formidable challenge. Some variability is sho