LIn the proposed CONCERTO project in Valby 200 kWp PV is integrated to match
electricity use for ventilation in 600 housing units, and solar thermal
collectors are combined with water savings to obtain 30-50% solar for DHW for
333 retrofit housing units and 50% for 70 nearly passive house rooftop
apartments (36 kWh/mē, year), while 200 new built apartments will get 30-50%
solar DHW.
Besides is used an innovative and cost effective biomass gasification CHP plant
using wood pellets.
In Salzburg they are also like Copenhagen already a kind of solar city. Their
plan is in the Concerto II project to demonstrate how you can expand the use of
solar heating to a higher level of the total need for heating and DHW, e.g. from
15% today to up to 45% in the best new apartment building schemes.
This is done by combining with a gasified heat pump. At the same time they use
district heating which is at least 50% based on biomass for the rest of the
heating supply.
Concerning the Ecobuilding both the projects in Copenhagen and in Salzburg have
a large part of the proposed realisation projects which deal with renovation of
existing buildings.
In Copenhagen it is up to 50-65%, or 300-400, of the involved 600 housing units
which are retrofit based, and in Salzburg it is 30-45%. But in Salzburg they
will expand this a lot in the Concerto area in the coming years, so the realised
200-300 renovation housing units will expand to about 1000 during a longer
period.
Both places it is the idea to try to develop an ecobuilding certification
standard for retrofit based on Concerto aiming at 25% better than normal new
built.
Besides this there is 200 new built housing units in Copenhagen and 380 new
built housing units in Salzburg. And both places also use of a passive house
standard will be demonstrated.