The cost of solar technology is dropping at an exponential rate [0] [1]. I've heard (and I believe) that solar has undercut coal (and maybe gas?) [2] by at leas

The cost of solar technology is dropping at an exponential rate [0] [1]. I've heard (and I believe) that solar has undercut coal (and maybe gas?) [2] by at least a year ago, if not more. In the US, and I imagine Canada and other European nations, we talk about putting solar on an individual house scale and, at best, earning 'credits' to give back to the grid if we have a surplus. Often times there are locations that can't push more energy into the grid from solar because the local grid can't support it. Nations without this historical infrastructure don't need to be limited by the infrastructure created to support coal and gas plants as a distant and centralized building. They can build solar power plants next to cities or towns and potentially build a decentralized grid. This is analogous to cell phone service vs. land line service. Without the legacy infrastructure, cell phone adoption is much quicker and easier. Battery technology is also seeing an exponential drop in price [3]. [0] https://en.wikipedia.org/wiki/Swanson%27s_law https://en.wikipedia.org/wiki/Swanson%27s_law [1] https://en.wikipedia.org/wiki/Experience_curve_effects https://en.wikipedia.org/wiki/Experience_curve_effects [2] https://www.theguardian.com/environment/2021/jun/23/most-new-wind-solar-projects-cheaper-than-coal-report https://www.theguardian.com/environment/2021/jun/23/most-new... [3] https://ourworldindata.org/battery-price-decline https://ourworldindata.org/battery-price-decline