esco implementations in austria and germany – some good practices ddi jan w. bleyl, graz energy...
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ESCO Implementations ESCO Implementations in Austria and Germany – in Austria and Germany –
Some Good PracticesSome Good Practices
DDI Jan W. Bleyl, Graz Energy Agency Ltd, Austria
phone: +43 316 811848-0; email: [email protected]
internet: www.grazer-ea.at
Overview of Content
Delivery/Supply Contracting
1. Public housing: 130 kWelt natural gas CHP Berlin, Germany
2. Military air field: 500 kWelt Biogas CHP Zeltweg, Austria
Perfomance Contracting
3. Public school „Jägergrund“, Graz, Austria
4. 500 public buildings in Austria: „Federal Real Estate Agency“ (BIG), Vienna, Austria
General project data:
21 residential buildings
(402 units, 26,800 m2)
Energy demand:
4.000 MWhtherm/a
650 MWhelt/a
CHP-System for residential housing 1/2
Supply system: 130 kWelt CHP-unit, 1,3MWtherm peak load boiler, local heat + electricity grid
Source: Berlin Energy Agency 2002
Some technical data of CHP-unit
installed capacity:130 kWelt/227 kWtherm
type: reciprocating engine
fuel: natural gas
Results:
thermal energy: about 50 % of total demand covered by CHP-unit
electricity:about 80 % of total demand covered by CHP
Primary Energy Saving: ca. 30%
CHP-System for residential housing 2/2
Source: Berlin Energy Agency 2002
Biogas CHP Plant Zeltweg (Military Airfield) 1/3
Largest Military Air Facility in Austria
Gras area : appr. 270 ha
Results:
Public-Private Partnership between Austrian military and private energy service company (ESCO/Contractor)
Europeanwide tendering process
Private investment: appr. 2,5 Mio €
Saving of 1 Mio € for composting facility
Contract duration: 10 years
Biogas CHP Plant Zeltweg 2/3
500 kWelt biogas fired CHP plant
Electricity is fed into public grid (high feed in tarifs for renewable electricity – 13 €cent/kWh)
Heat is fed into local heating net work of the air field
Farming machines are provided by service company
Mowing, stowing into silo, distribution of liquid manure is executed by military personal
Biogas CHP Plant Zeltweg – Schematic 3/3
Reconstruction of heating system and energetic optimisation
Public School (Jägergrund/Webling) 1/2
Public School Jägergrund/Webling) 2/2
Measures Conversion from electrical heating to central heating Connection to district heating and installation of a substation Controlling system and optimisation Electric installations and light management Changing windows, frames (incl. parapets and wall elements)
Results:
Private Investment: 1,17 Mio. Euro
Guaranteed energy saving: 47% (40.000 Euro/a)
CO2-reduction: 335t/year (-84%)
Duration of contract: 15 years
Contractin
g-Award
Energieprofi 2000
Saving potentials in public buildings – results from the Austrian EPC-Campaign
project start implementation of measures end of contract
years
energy cost
payment to ESCo
controlling cost
service & operationt
project management (tendering, ...)
Source: EVA 2003
