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What-If

Explore what could change.

Choose a place, a documented issue and one of its documented interventions, then set how far it goes.

ILLUSTRATIVE SCENARIO — NOT A SCIENTIFIC PREDICTION. Built from documented causes, impacts and solutions plus general qualitative patterns. It contains no modelled numbers.

3 · Intervention
PilotScaledTransformative

Adopted across much of the area, with dedicated budgets and enforcement.

Illustrative scenario

What if Berlin took a scaled approach to “Coal exit for district heating”?

Starting point · documented

EnergySeverity: Moderate
Decarbonising heat in Berlin

Heating buildings is a large share of Berlin's emissions, and the city is shifting district heating away from coal.

The intervention · documented

Coal exit for district heating

Replacing coal plants with lower-carbon heat sources.

Substantially reduces heat-related emissions.

Schematic direction of change

Energy systems change with infrastructure turnover, which typically takes years to decades.

Schematic, unitless illustration: relative pressure over time without the intervention compared with the intervention in place. Not based on measured data.NowLonger term →Relative pressure (unitless)
Without the intervention With the interventionSchematic shape only — no data, units or dates.

Causes this could address

  • Fossil-fuelled heatingGas, oil and coal supply most building heat.

Impacts that could ease

  • Greenhouse gas emissionsHeating is a major source of city emissions.
  • Energy cost exposureHouseholds are exposed to fossil fuel price shocks.

Wider reach at higher intensity is an assumption of this illustration.

How change might unfold

  1. Near term

    Efficiency measures and early projects begin to cut demand and emissions.

  2. Medium term

    New low-carbon capacity and retrofits displace a growing share of fossil energy.

  3. Long term

    Deep change requires replacing long-lived infrastructure and hard-to-abate processes.

Faded stages are less likely to be reached at scaled intensity.

What this would not change

Grid constraints, costs and long asset lifetimes set the pace; global fuel markets also matter.

What it depends on

  • Sustained funding and institutional capacity
  • Consistent enforcement and monitoring
  • Local stakeholder support
  • Participation of affected communities

ILLUSTRATIVE SCENARIO — NOT A SCIENTIFIC PREDICTION. Built from documented causes, impacts and solutions plus general qualitative patterns. It contains no modelled numbers.