expected share of Espoo-region district heat supplied from Microsoft's data centers at full operation, via Fortum's €225M heat-capture system (180 MWth heat pumps, 200 MWth electric boilers, 800 MWh thermal storage); heat production started May 2026, DC waste heat ramps from 2027
~40%forecast
| Value kind | forecast — Forecasts are time-bound outlooks, not specifications; test decisions across plausible scenarios. |
|---|---|
| Scope | The reference heat-reuse deal at scale: ~0.8 TWh/yr implied contribution to a ~2 TWh/yr district-heating system. Google Hamina targets up to 80% of that town's district-heat demand. |
| As of | 2026-05 |
| Source | Fortum |
| Review | checking…review by 2026-10-22 · standard cadence |
| Recorded changes | none recorded |
| Claim id | fortum-microsoft-espoo-district-heat-share |
Where the guide uses it
Not quoted in a chapter yet; it is kept in the curated register.
← Full numbers register — every date-stamped figure in the guide, with revision history.