PowerPoint-presentatieRenewable Energy Systems
Progress of energy renovations in the Dutch Housing Stock
Energy labels versus actual energy use
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Grafiek2
Agriculture
Other
Industry
Transport
A: Operation of the Building
Heating and cooling
Hot tap water
Appliances: Computers, tv’s, fridges, washing machines, dishwashers, vacuum cleaners, ect.
B: Construction, Maintenance, Renovation, Demolition
Embodied energy
Construction process
South Central & East North and West
Biomass 27% Biomass 20% Biomass 21%
Electricity 18% Electricity 1% Electricity 13%
Oil 32% Coal 41% Coal 1%
Gas 23% Oil 3% Oil 20%
Gas 7% Gas 39%
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Gas for: heating, hot tap water, cooking
District heating (cooling water form industry / electricity plant / waste burning for: heating, hot tap water ect.
Electricity for: cooling, ventilation, lighting, appliances etc.
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Other characteristics of the building stock:
In Northern and middle Europe: most energy is used for heating
Needed heating depends on the size of a building and the heat losses through the envelop
The age of the building stock is high
A very low adaptation rate
Most EU countries: new production is only 1 % of the stock
Regulations for insulation: introduced on low level around 1975
In NL energy performance reg’s in 1995
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In EU 35 – 40 % of energy is used in Buildings
Considered to be the sector with the most cost effective energy saving potential
EU, national and local policies for reducing energy use
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Improve efficiency of energy use (e.g. high efficiency heating boiler)
Replace fossil fuels by renewable energy
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Policy documents
Energy Performance Certificates for sold or re-rented buildings
Energy Efficiency Directive (EED)
2050: energy neutral stock
Required: 3% renovation per year at a very high level
(and savings according the theoretical savings!!)
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Tenure ship
Energy renovation in social housing sector in the Netherlands: Goal
Covenant rental housing sector
2020: average label B
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SHAERE database
Set up and owned by Aedes: umbrella organisation of SHO’s in NL => 35% of the stock, 2.3 milj. Dwellings.
All data necessary for Energy performance Certificates (EPC’s – Labels)
Every year all SHO’s submit the data to Aedes including all improvements
Progress from year to year can be monitored
Year of reporting
2010
1132946
47.2%
2011
1186067
49.4%
2012
1438700
59.9%
2013
1448266
60.3%
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Actual yearly energy use - bills (CBS)
200.000 cases
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EU-NL High expectations of renovations to reduce heating demand
Hugh investments are needed to reach the renovation goals
In the SHO stock: only small steps are made, progress to slow
When renovating poor performing dwellings to higher levels, a large share of potential savings are used to increase comfort
Actual saving potential is lower
Payback times do not work!
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