One state has tried requiring power at peak demand periods to come from clean sources. This mandate can improve air quality in low-income communities. Critics question its effect on emissions, though, and its optimal design as clean-energy storage for utilities evolves.
Not every analysis concludes that the scale-up costs of hydrogen make it more bankable than wind, solar and hydropower. But since hydrogen production requires less land, and since it can reach hard-to-decarbonize sectors, many investors are giving it a long look. Now you can too.