Energy efficiency in AB Stångåstaden

Energy efficiency in
AB Stångåstaden
Teodor Hovenberg
Energy Strategist
AB Stångåstaden
•
100 % municipally owned housing company
•
Net turnover 2011 appr. 120 million Euros
•
130 employees
•
18 678 apartments
of which 4 096 are student accommodations
•
84 831 m2 commercial premises
•
33 000 tenants in Linköping
•
1 600 000 m2 heated areas
Some grounds:
1. The right energy at the right place
2. Some examples of current projects
within AB Stångåstaden
3. New methods on energy management
1. The right energy
at the right place
Heating energy consumption 2009
District heating
Rapeseed oil
Electrical
heating
Heating energy consumption 2011
District heating
Electrical
heating
District heating (CHP)
from our point of view
??
Cooled water
Electricity
Hot water
Electricity
How is district heating produced in Linköping?
Fuels 2008, Tekniska Verken och MSE
GWh
250
Crudeolja
oil
Övrig
Crude
Olja
P2 oil (P2)
200
Coal
Kol
Wood
chips
Flis
Ljungsbro
150
Wood
(MSE)
Trä
MSE
Rubberm.m.
etc (P1)
Gummi
P1
Wood
Trä
P3 (P3)
100
Plastics (P3)
Plastavfall
P3
Wood (Gärstad)
Gärstad
trä
50
Waste (Gärstad)
Gärstad
avfall
Heat dumped
Bortkylt
kondens
0
Heat dumped
Bortkylt
återkylare
JAN
-50
FEB
MAR
APR
MAJ
JUN
JUL
AUG
SEP
OKT
NOV
DEC
Why save electricity?
Källa: Factbook – Generation Capacity in Europe (RWE, 2007)
General objectives:
•
Reduced consumption of residential electricity and
0 % electrical heating
•
Reduced consumption of energy from district
heating, primarily in the winter time
Quantified goals are not set!
2. Some examples of recent
projects within Stångåstaden
Project
”Future-proof laundry rooms”
•
-project! (2008-2012)
• Investment of 800 000 euro
during four years
• Goal: Reduced use of
electricity by 1 000 000 kWh
per year
Use of electricity, Härnegatan 38
Magistratshagen/Stolplyckan
• Insulated and
plastered facade
• New windows
• New ventilation
Heat demand
reduced
at least 50 %
Other recent activities
• Exchange of ventilation fans (ÆEC)
• Upgrading of district heating centrals
• Installation of heat recovering ventilation
• Insulation of attics
• Exchange of windows and insulation of facades
• And dozens of other activities..
• ..But still NOT enough to reach the
202020 targets!
Sponsorship of service for 5 years at Linköping
University starting jan 2011
Main objectives:
• Evaluation of recent projects
• Develop energy related information to tenants
and contractors
• Help achieving our energy objectives!
Prower production
Partner in ”Gryningsvind” since may 2010
Corresponding to 20 % of total electricity
consumption, since january 15 th 2011!
Gryningsvind AB
• ”Falkenbergsporten” in Falkenberg
(1 pc. 660 kW Vestas, appr. 1 GWh/yr)
• ”Rodovålen” in Härjedalen
(1 pc. 2 MW Enercon, appr. 6 GWh/yr)
• ”Topperyd” in Nässjö, Småland
(2 pc 2 MW Vestas, appr 10,4 GWh/yr)
In operation from 15/1 2011
Our share is 40 % of the company.
Æ Appr. 7 000 MWh electricity
= 20 % of total consumption
Further investments are
under discussion!
3. New methods on
energy management
• Energy declarations of
buildings
• EU directive 2002/91/
EG on the energy
performance of
buildings
• Amendment 2010:
increased demands
both on new
production buildings
and renovations!
Mapping/documentation of our buildings
Measuring heated areas, areas of windows/facades/roofs. Mapping
ventilation systems, energy consuming installations etc.
Example; ”enclosing area”:
Total heated area
Enclosing area
Heat demand
400 m2
850 m2
400 m2
1 400 m2
+ appr 15-20%
Mapping of our installations
What installation supports what area? ”What’s attached to the meter?”
Household electricity
Operational electricity
Residential electricity
Better statistics
”Ensuring the quality of statistics and increasing the resolution”
0915 Drottninggatan 35
2009
Resource Control
Building
information
Object
information
Media
statistics
Energy fees
and costs
Reports for
analysis, monitoring and
Maintenance control!
Environmental and Energy management
Æ Increased energy efficiency
Æ Limited energy costs
Æ More attractive apartments
Environmental and Energy management
Economic
sustainability
Environmental
sustainability
Social
sustainability
Thank you!