From the source document https://assets.documentcloud.org/documents/4340162/Xcel-Solicitation-Report.pdf https://assets.documentcloud.org/documents/4340162/Xcel

From the source document https://assets.documentcloud.org/documents/4340162/Xcel-Solicitation-Report.pdf https://assets.documentcloud.org/documents/4340162/Xcel-Soli... "Pricing is provided in $/kW-mo terms for those generation types that can be viewed as dispatchable and likely to provide high levels of generation capacity credit. Pricing is provided in $/MWh terms for those generation types or resources that are non-dispatchable or that include a storage component with a non-dispatchable base generation resource." They're paying for whatever wind and solar can provide but require fossil fuel plants to produce what actually need.