[USA] New Mexico regulators delay two solar+storage projects intended to replace San Juan coal plant

On April 29, 2020 the New Mexico Public Regulation Commission voted 3-2 to delay the decision on whether to approve two solar-plus-storage projects that the Public Service Company of New Mexico (PNM), the New Mexico’s largest investor-owned utility, had proposed as part of the replacement generation for its San Juan coal plant.[1] The regulators determined that they could not approve the two solar projects before taking a closer look at the utility’s full replacement plan. The two projects in question are the Arroyo (300 MW of solar and 40 MW/160 MWh of battery storage) and the Jicarilla (50 MW solar and 20 MW/80MWh of battery storage) projects. The two projects are part of PNM's broader plan to add 350 MW of solar capacity, 380 MWh battery storage, and 280 MW of natural gas to replace its coal-fired generation. PNM has plans to spend $733 million in order to replace its coal-fired generation.[2]

Environmental groups and PNM have both stated that they were not happy with the decision, though they both understood in part the commission's reasoning. A major downfall to the delay is that the projects won’t be able to secure the full value of the solar investment tax credit as it winds down, making the projects' future prices unknown.

[1] https://www.santafenewmexican.com/news/local_news/regulators-again-delay-decision-on-pnms-solar-proposals/article_475242f8-8a32-11ea-aa6c-571c28313f6f.html

[2] https://www.prnewswire.com/news-releases/pnm-files-consolidated-application-for-san-juan-generating-station-300878854.html