The link for this post is using an archive for the article on Bloomberg's website. An archive has no paywall, no subscription requirement, and can be easier to read. The original article, on Bloomberg's website is:

Negative Power Prices? Blame the US Grid for Stranding Renewable Energy
https://www.bloomberg.com/news/articles/2022-08-30/trapped-renewable-energy-sends-us-power-prices-below-zero