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BIOMASS DISTRICT HEATING IN LA VISCOSE AREA IN ECHIROLLES
- GRENOBLE -
Renewable energy sources
Synopsis
Biomass
The objective is to substitute the unaffordable electric heat-
ing in favour of biomass district heating. This solution allows
primary energy savings of approximately 9 000 MWh/year.
The project also aims to develop cost cutting approaches and
c
standardized technical and contractual solutions for similar tri So
lec ns lar
oe tatio
dr s ene
conversions to renewable energy sources in other social
Hy wer rg y
housing areas. po
Rational use of energy
Cogeneration
Res ng
id ual h eati
hea rict
t Dist
Mo atin
ur es’
he
vio pl
de g sy
ha eo
rn
be ing p
isa stem
tio s
ng
The tenants used several heating
no
a
Ch
f
means before district heating was
available saving time and money.
Keywords : Sustainable communi-
ties & building systems, low energy
housing; modernization and upgrad-
ing of heating systems
Background
Echirolles is an industrial suburb in the South
of Grenoble. Viscose is an area that once housed
Project Description
workers of a local artificial silk factory. The number of dwellings was reduced to in-
It is a rundown area with many workers on the crease their size and install a bathroom in every
minimum wage and unemployment summing up to flat. In the older 1920s buildings, five different con-
almost 13%. There are about 940 inhabitants in the figurations have been adopted; most of these build-
Viscose area. ings comprise four or five dwellings, while some
The housing stock in the Viscose area dates contain 12 dwellings.
from two periods, with 58 low-rise buildings com- The roofs were refurbished and external insu-
pleted in 1927 and a further six blocks of flats in lation provided as well as double glazing and new
1992/93. doors. The insulation comprises an external 10cm
There are in total 362 dwellings, all of them social layer of glass wool or polystyrene. All the old build-
housing and garden plots may be rented by residents. ings except two have external insulation.
As part of CONCERTO SESAC programme,
French consultants visited the city of Växjö in Swe-
Objectives den to get inspired by their district heating system.
The aim was to reduce carbon emissions across Three different options were then explored for La
the Viscose area by using biomass for the district Viscose.
heating system (older buildings) and solar heating A solution was adopted from the Swedish
(newer buildings); the two networks are connected. model, using prefabricated substations in each
In total around 264 t/year of CO2 were reduced. building, bringing improvements to the traditional
French model and saving time and money.
SESAC project GRENOBLE
Biomass District Heating in La Viscose
SESAC (Sustainable Ener-
gy Systems in Advanced
Cities) is part of the broader
Monitoring & Evaluation
CONCERTO initiative with the The monitoring is assured via
aim of accelerating innovation monthly data collection by the operator.
in renewable energy (RE)
These data are selected, synthesized and
solutions, advance energy
OPAC 38 carries out a thorough analysis.
efficiency (EE) and systems for
poly-generation linked
Costs and Benefits The first data show a consumption of 230
together with concepts for eco- KWh/m2/year (domestic hot water +
buildings. Energy 5 000 KWh/year heating) for the La Viscose district in
saved 2008.
The project, aims at
s ho w in g h ow th e loc a l CO2 emis- 264 t/year For 2009, we noticed a consump-
economy is able to thrive at sions tion of 246 kWh/m2/year (domestic hot
the same time as less CO2 is avoided water + heating) for all connected dwell-
emitted. This is being Level of 952 K€ ings. This consumption (too high), im-
translated into innovative financial plies insulation works on building roofs to
energy measures in both new support reduce this overconsumption.
building development projects
Means of Equity OPAC38 (952 Concerning social monitoring,
and the renovation of existing
buildings. The measures focus financing k€), subsidies from : committees of residence are organized
on energy saving and the use Palulos 364 K€ / Europe to verify with all the actors (including
of renewable energy for (Concerto) 575 K€ / the inhabitants) if the indicators answer
electricity, heating and cooling. Region 150 K€ / District indeed to the energy performance objec-
Delft (Netherlands), Växjö heating + ADEME 1 059
( S we d e n ) a n d G r en ob l e
(France) are all carrying out
K€ / CGI 613 K€ / Recommendations
METRO 728 K€
demonstration projects while EU projects like CONCERTO SESAC
Kaunas (Lithuania), Miskolc Loans : Palulos 1 292 k€
Ecological Cost reduction of en- enable pan-European collaboration, in
(Hungary) and Vastseliina
benefits ergy production, Con- this case to implement a Swedish model
(Estonia) are gaining
knowledge and experience version to biomass en- of district heating in France. The refur-
through the local energy stu- ergy, reduction of CO2 bished and new built dwellings, the use
dies they are performing. emissions. of biomass and solar power, a centre for
the disabled and many environmental
The project budget is € 25
improvements have together created an
million, the EU funding € 10.4
million.
Partners & Roles attractive area and a good standard
of accommodation.
www.concerto-sesac.eu • OPAC 38 – Public Housing Company
• Municipality of Echirolles
CONCERTO projects
Next Steps
There is a waiting list of residents wanting to
CONCERTO is a major new
initiative in the context of the
rent a garden plot. Guidelines on water management
European research and and land use planning are being developed.
technological development by The tenants’ association organises a contest
supporting local communities to award the ‘garden of the year’.
in demonstrating actions that
are both sustainable and
energy efficient. Further Information
CONCERTO aims to
Contact Person
demonstrate the high potential
for energy efficiency and high
Name Brice Hugon
share of renewables which can Position Project Manager
be achieved through a fully Organisation OPAC 38
integrated approach in high Address 47 avenue Marie Reynoard B.P. 2549
performing communities. 38035 Grenoble Cedex 2; France
www.concertoplus.eu Tel + 33 4 76 20 50 57
E-mail brice.hugon@opac38.fr
Web www.opac38.fr
This case study was prepared by OPAC 38 in collaboration with Energie-Cités; with the financial support of SESAC which
is a project of the CONCERTO initiative co-funded by the European Commission within the Sixth Framework Programme.
Last updated: February 2010.
