ESCO Implementations in Austria and Germany Some Good

ESCO Implementations in Austria and Germany – Some Good Practices DDI Jan W. Bleyl, Graz Energy Agency Ltd, Austria phone: +43 316 811848 -0; email: bleyl@grazer-ea. at internet: www. grazer-ea. at

Overview of Content Delivery/Supply Contracting 1. Public housing: 130 k. Welt natural gas CHP Berlin, Germany 2. Military air field: 500 k. Welt 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

CHP-System for residential housing 1/2 General project data: n 21 residential buildings n (402 units, 26, 800 m 2) n Energy demand: 4. 000 MWhtherm/a 650 MWhelt/a Source: Berlin Energy Agency 2002 Supply system: 130 k. Welt CHP-unit, 1, 3 MWtherm peak load boiler, local heat + electricity grid

CHP-System for residential housing 2/2 Some technical data of CHP-unit n installed capacity: 130 k. Welt/227 k. Wtherm n type: reciprocating engine n fuel: natural gas Results: n thermal energy: about 50 % of total demand covered by CHP-unit n electricity: about 80 % of total demand covered by CHP n Primary Energy Saving: ca. 30% Source: Berlin Energy Agency 2002

Biogas CHP Plant Zeltweg (Military Airfield) 1/3 n Largest Military Air Facility in Austria n Gras area : appr. 270 ha Results: n Public-Private Partnership between Austrian military and private energy service company (ESCO/Contractor) n Europeanwide tendering process n Private investment: appr. 2, 5 Mio € n Saving of 1 Mio € for composting facility n Contract duration: 10 years

Biogas CHP Plant Zeltweg 2/3 n 500 k. Welt biogas fired CHP plant n Electricity is fed into public grid (high feed in tarifs for renewable electricity – 13 €cent/k. Wh) n Heat is fed into local heating net work of the air field n Farming machines are provided by service company n Mowing, stowing into silo, distribution of liquid manure is executed by military personal

Biogas CHP Plant Zeltweg – Schematic 3/3

Public School (Jägergrund/Webling) 1/2 Reconstruction of heating system and energetic optimisation

Public School Jägergrund/Webling) 2/2 n Measures Ø Conversion from electrical heating to central heating Ø Connection to district heating and installation of a substation Ø Controlling system and optimisation Ø Electric installations and light management Ø Changing windows, frames (incl. parapets and wall elements) Results: n Private Investment: 1, 17 Mio. Euro n Guaranteed energy saving: 47% (40. 000 Euro/a) n CO 2 -reduction: 335 t/year (-84%) n Duration of contract: 15 years ard w g-A 2000 n i ct ofi a r nt iepr o C erg En

Saving potentials in public buildings – results from the Austrian EPC-Campaign project management (tendering, . . . ) service & operationt controlling cost payment to ESCo energy cost years project start implementation of measures end of contract Source: EVA 2003

The team of the Graz Energy Agency Contact us: office@grazer-ea. at - www. grazer-ea. at