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2.1 District Heating
At the beginning of the project, the municipal council
opted for voluntary arrangements for all existing
homes. They could accept or decline to connect to
the district heating system. Only new buildings built
in areas with existing or planned district heating are
compelled to connect to the district heating system.
In Tranebjerg this was the case in one area. In Ballen
three new subdivisions have been forced to connect
to the district heating system. In total about 80
houses in the heating district will be forced to join.
10 have done so and about 60 will be established
by the end of 2008. One of the latest subdivisions in
Tranebjerg (district plan nr. 61 from 12/12-2006, consisting
of 23 houses) is without mandatory connection
to the district heating system. The buildings are
instead built to comply to the minimum standards
for energy class 2 buildings (according to BRS 98,
addition 9). The lower heat requirements make the
combination of heat pumps, thermal solar and PV
cells or other RE combinations more feasible.
It is very inexpensive to sign up for district heating
before the plant is constructed. The consumer
pays 80 Danish kroners (DKK), equivalent to 10
euros (EUR,) as a registration fee when they sign
the contract. This model was introduced by NRGi in
Tranebjerg and used in the remaining three district
heating stations. The model is an exception to normal
practice. In Denmark, a high registration fee is
normally paid both when the district heating system
is established as well as when connecting to existing
district heating systems. In the NRGi model, the high
registration fee is only paid for connecting to existing
plants, typically about 36,000 DKK (about 4,700
EUR). A consequence of using this model is higher
heating prices, because the repayment of investment
costs is added to the price of the heat delivered. Still,
the price is favourable compared to the high costs of
heating by oil or electricity. The national association
for energy savings ‘Energisparefonden’ gave a grant
to heat consumers who converted from electrical
heating to district heating.
The municipal council on Samsø guaranteed the
mortgage loans that fi nance the district heating stations.
Straw and wood chips for the district heating
stations are produced by local farmers.
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