Power purchase agreements are priced differently and usually written to guarantee power at a predictable price, think of it like reserved instances and spot on the cloud. Bulk of workloads don’t care or benefit from spot pricing.
Also Modern neoclouds have captive non grid sources like gas or diesel plants for which grid demand has no impact to cost. These sources are not cheap but DC operators have not much choice as getting grid capacity takes years . Even gas turbines are difficult to procure these days so we hear of funky sources like jet engines.
Power purchase agreements are priced differently and usually written to guarantee power at a predictable price, think of it like reserved instances and spot on the cloud. Bulk of workloads don’t care or benefit from spot pricing.
Also Modern neoclouds have captive non grid sources like gas or diesel plants for which grid demand has no impact to cost. These sources are not cheap but DC operators have not much choice as getting grid capacity takes years . Even gas turbines are difficult to procure these days so we hear of funky sources like jet engines.