WEBVTT

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Cities are hungry for energy.

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The more densely people, buildings,
infrastructures and information are

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networked, the higher the demand.

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Before industrialization, wood, wind,
water and

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muscle power limited the city, and
expansion with

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coal, oil and gas shot up its efficiency.

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And the mass urbanization that we know
today became physically possible.

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Unfortunately, together with the CO2
concentration in

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the atmosphere and the consequences for
the climate.

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We can already feel the result today.

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More frequent heat waves, heavy rainfall,
storms, rising sea levels.

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Therefore, for sustainable cities, we
need

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to achieve two inextricably linked
things.

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Decarbonize the energy supply, i.e. make
it free of CO2

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emissions and adapt our cities to the
climate change that is already happening.

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Energy transition and climate protection
Resilience are two sides of the same

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coin.

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Cities contribute disproportionately to
emissions and are at the same

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time more efficient per capita because
they generate so much wealth.

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But efficiency alone is of no use if net
emissions have to be reduced to zero.

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Zero.

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Much is decided beyond municipal
boundaries, electricity

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mix, technology, national and European
rules.

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But cities also have effective levers
Municipal utilities,

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local heat and power grids, urban land
use planning,

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renovation standards, traffic
organisation How we build,

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renovate, heat, cool and move has an
impact on the climate.

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At the same time, it is important to
distinguish

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global from local environmental problems.

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CO2 is global.

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Molecules know no borders.

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Air pollutants, noise or sanitation are
often more

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manageable locally and with growing
prosperity.

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Local problems can often be solved
locally from a technical and

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administrative point of view.

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The global climate problem, on the other
hand, requires

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consistent decarbonization across all
levels, from

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global agreements to the EU, politics and
national

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legislation to local district planning.

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This chapter therefore spans a wide arc
from the physical

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foundation of urban energy demand to the
legal political

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framework of the energy transition to
practical implementation in electricity

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and heat.

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System of quarters.

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It shows why the heat transition is the
supreme

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discipline, how digital, decentralised

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networks work and why based solutions
massively

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increase the resilience of cities.

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In short, we design cities that use less
carbon

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and can withstand more wind and weather.

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This is not a heroic saga, but strenuous
and complex detailed work.

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But how well it succeeds distinguishes a
vulnerable city from a sustainable urban

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living space.