The BlueGreen Alliance, a United States-based coalition focused on clean energy and labor, has collaborated with the Rocky Mountain Institute, a US-based nonprofit research organization, to release an analysis of the US solar supply chain. According to the study, there is no domestic production capacity for polysilicon ingots and wafers, while only two facilities have supplied solar-grade polysilicon with an annual capacity of 20 to 25 GW. The analysis reported that six US facilities were producing metallurgical-grade silicon equal to 50 to 100 gigawatts, though most production was directed toward non-solar industries. US solar cell manufacturing was found negligible, while domestic capacity for flat glass and power optimizers was meeting less than 25% of projected demand. The analysis has reviewed 335 facilities manufacturing modules, inverters, racking, encapsulants, junction boxes, frames, adhesives, and trackers, and it has projected 43 GW of demand over five years using data from DOE, SEIA, and USGS.