Clean energy is on the verge of a major breakthrough, with solar panel costs plummeting from $100 per watt in 1975 to just a fraction of that by 2020—a staggering 500-fold decrease. This trend isn't limited to solar; battery costs for electric vehicles and grid storage are also dropping rapidly. As we enter an era of exponential cost reductions, the potential for using clean electricity to produce hydrogen and other fuels for various industries is just beginning to unfold.
