Urban and Regional Planning adopting RES - Sitra

Making Cities Energy Efficient
On demand side, the city of Barcelona promoted energy efficient buildings
to be then connected to the DHC network. One example is the social housing
apartment block designed by Sabaté associates Arquitectura i Sostenibilitat
(SaAS), Barcelona, with 95 flats (12 600 m 2 gross floor area). This building
is the first social housing block that achieved an ”A” rating according to
the Energy Performance in Buildings Directive (3,8 kgCO 2
/m 2·a) in Barcelona.
Its main features are continuous thermal insulation of the building envelope
with U-values inferior to 0,3 W/m 2·K (more than 50% below legal requirements),
wooden windows with reduced thermal transmittance, exterior
movable wooden blinds that allow take advantage of solar gains in winter
but allow individual shadowing in summer, as well as a ventilated façade
avoiding overheating in summer. The main advantages for the developer
are the savings due to the absence of a gas installation, the reduction in
space required for installations (both in the basement and on the roof ),
the reduction of noise due to the (lack of ) installations and particularly
the reduction of maintenance compared to individual heating systems.
An energy service company provides the end users with an integral service
including contracting, metering, invoicing, maintaining and running of a
24 hours service, and provides Districlima with a single customer and point
of contact in the building.
Figure 17: Some 95 apartments connected to district energy in Barcelona Innovation
District 22@. (Source: SaAS)
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