Energy & HeatOperating

Waste-heat district heating

Captures low-grade server exhaust heat and feeds it into a municipal district-heating loop, warming homes and civic buildings instead of venting it to the sky.

Open planner →Cost bandHighIllustrative Example

Where it applies

Applicability of Waste-heat district heating across climate, water stress, land context, and community scale.
ClimateColdapplicableTemperateapplicableAridnot applicableTropicalnot applicable
Water stressLowapplicableMediumapplicableHighapplicable
Land contextGreenfieldapplicableDegradedapplicableBrownfieldapplicableUrbanapplicable
Community scaleRuralnot applicableTownapplicableMetroapplicable

Five Capitals contribution

  • Natural2
  • Human0
  • Social3
  • Built4
  • Financial2

0–5 illustrative weighting of how this intervention builds each capital. Illustrative Example.

PrecedentOperating

Verified operating project(s), externally cited.

Meta Odense ~100 GWh/yr, up to ~11k homes; Google Hamina ~80% of town demand free; Stockholm free-cooling-for-heat

Case studies4

Meta Odense

Operating

Meta · Odense, Denmark

FigureValueSource
Heat delivered~100,000 MWh/yrhigh conf.Odense heat recovery · 2022 (citation)
Homes served (expanded)~11,000medium conf.Odense heat recovery · 2022 (citation)

Meta’s Odense hyperscale campus routes surplus server heat into the Fjernvarme Fyn district network; Denmark abolished the surplus-heat tax in 2022 to unlock the model.

How it maps hereThe anchor OPERATING case for cold/temperate heat offtake; drives the SYN-HEAT synergy in the modeler.

Google Hamina

Operating

Google · Hamina, Finland

FigureValueSource
Heat plant capacity7.5 MWmedium conf.Hamina heat recovery · 2024 (citation)
Share of town heat demand~80%medium conf.Hamina heat recovery · 2024 (citation)
Carbon-free energy match97% CFEmedium conf.Hamina CFE · 2024 (citation)

Google supplies recovered heat to the Hamina district network free of charge, covering roughly 80% of town demand while the site runs at ~97% hourly carbon-free energy.

How it maps hereShows the offtake pairing with hourly CFE (E16) — a two-item SYN-HEAT + clean-power story.

Stockholm Exergi

Operating

Stockholm Exergi · Stockholm, Sweden

FigureValueSource
Apartments heated~30,000medium conf.Open District Heating (citation)

Under Open District Heating the utility pays data centers for recovered heat and installs the heat pumps, turning free-cooling into a revenue stream for the operator.

How it maps hereDemonstrates the utility-pays commercial structure that makes E1 financially positive.

Microsoft Espoo

Announced

Microsoft / Fortum · Espoo, Finland

This precedent is announced, not operating — figures below are planned or illustrative, not delivered results.

FigureValueSource
Regional heat share (planned)~40%medium conf.Espoo heat recovery · 2022 (citation)

A planned Microsoft/Fortum project to supply ~40% of the Espoo region’s heat from a new data center campus.

How it maps hereANNOUNCED, not operating — flagged so the site never presents projected capacity as delivered.

Sources

  • Meta Odense district heat recoveryMeta / Fjernvarme Fyn · 2022
  • Google Hamina waste-heat supplyGoogle · 2024
  • Open District Heating free-cooling-for-heatStockholm Exergi

These compoundSYN-HEAT

Running these together in the Place Planner unlocks a synergy multiplier — each strengthens the others.

Illustrative model. The Regen Data Center is an educational reference model. Figures shown are either externally cited or tagged as illustrative examples; interactive outputs are illustrative and not offers, financial advice, or guarantees. Operating, announced, and proposal precedents are labeled distinctly throughout. Nothing here recognizes, certifies, or constitutes a VLAS-verified asset.

Regen Data Center · v0.15.1