A grid can be clean on average and dependent at exactly the hours a 24/7 load cannot switch off. Annual clean share hides low-renewable weeks, import-dependent evenings and scarcity prices. Here is every hour of the selected year, per grid; the same hours a data centre would have to live through.
Grid
Year
Colour the year by
the annual number vs the hours behind it; domestic generation basis, imports carry no fuel attribution
Method & receipt. Hourly, per selected calendar year: domestic generation by type (ENTSO-E, the verified clean series), demand (ENTSO-E load), cross-border flows (net position = inflows − outflows; no fuel attribution of imports; meshed-network flow tracing is out of scope and origin claims are not made), day-ahead prices. Clean = solar, wind, nuclear, biomass, geothermal, marine and hydro including pumped storage (a store, not a source; disclosed). Import-dependent hour = net imports above 10% of demand. Hourly-matched coverage for the illustrative flat 300 MW load counts only domestic clean surplus after existing demand, hour by hour; an overlay, not a procurement calculation. Missing hours render blank, never interpolated. GET /v2/spatial/clean-hours · sources.