Gerhard Hofer. Framework Conditions for Planning, Procuring and Operating District Heating Systems including Thermal Solar Plants

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Gerhard Hofer Framework Conditions for Planning, Procuring and Operating District Heating Systems including Thermal Solar Plants Framework Conditions for District Heating Systems, SDH workshop, 7 Dec 2017

e7 Energie Markt Analyse GmbH Research and consultancy company, seated in Vienna Focus on Energy related topics Energy and climate policy support, Energy economic studies Energy efficient and sustainable buildings and urban neighbourhoods Support for energy saving and optimisation of buildings and networks www.e-sieben.at Source: e7 2

Examples of references in district heating General Orientation for district heating providers nationwide/for regions Study on Future Potential for District Heating and Cooling in Austria Study on Policy Instruments for Energy Planning New networks Feasibility of district heating solution for a specific district Feasibility study for sustainable alternative heating supply systems in the district Donaufeld in the City of Vienna New networks Procurement of local district heating to an ESCO Procurement procedure for Heat supply system in Limberg, Salzburg Existing networks Energy savings for local district heating suppliers Concepts for reducing inlet temperature of heating network 3

Examples of references in district heating General Orientation for district heating providers nationwide/for regions Study on Future Potential for District Heating and Cooling in Austria Study on Policy Instruments for Energy Planning New networks Feasibility of district heating solution for a specific district Feasibility study for sustainable alternative heating supply systems in the district Donaufeld in the City of Vienna New networks Procurement of local district heating to an ESCO Procurement procedure for Heat supply system in Limberg, Salzburg Existing networks Energy savings for local district heating suppliers Concepts for reducing inlet temperature of heating network 4

Future Potential for District Heating and Cooling in Austria Bottom up model Spatial grid over whole Austria Size: 1 x 1 km (= 85.000 grid cells) Information about Number of apartments Energy demand for heating and hot water Future outlook in scenarios (decrease of heat demand, energy efficient building technology, new buildings and renovation) 5

Future Potential for District Heating and Cooling in Austria Prognosis for district heating Potential energy demand for district heating District heating supply 2001-2007 District heating prognosis 2008-2017 6

Examples of references in district heating General Orientation for district heating providers nationwide/for regions Study on Future Potential for District Heating and Cooling in Austria Study on Policy Instruments for Energy Planning New networks Feasibility of district heating solution for a specific district Feasibility study for sustainable alternative heating supply systems in the district Donaufeld in the City of Vienna New networks Procurement of local district heating to an ESCO Procurement procedure for Heat supply system in Limberg, Salzburg Existing networks Energy savings for local district heating suppliers Concepts for reducing inlet temperature of heating network 7

Policy Instruments for Spatial Energy Planning Solar, geothermal, wind, waste heat Heating demand scenarios, developments in building technologies Targets for infrastructure (regions, new solutions, energy carrier) Local energy resources Energy demand scenarios Infrastructure Concept for spatial energy planning Land development plan Strategic urban planning Infrastructure decisions Source: Stefan Geier, MA20 8

Policy Instruments for Spatial Energy Planning Define strategies for each energy generation system areas for district heating enough heat demand in specific area for economic operation of district heating areas for using waste heat assessment of existing waste heat potential (esp. in combination with district heating) areas for other energy carries such as biomass, heat pump including solar energy Define a plan to set priorities of heat generation systems for specific areas in cities and municipalities Example: Zürich Kloten 9

Examples of references in district heating General Orientation for district heating providers nationwide/for regions Study on Future Potential for District Heating and Cooling in Austria Study on Policy Instruments for Energy Planning New networks Feasibility of district heating solution for a specific district Feasibility study for sustainable alternative heating supply systems in the district Donaufeld in the City of Vienna New networks Procurement of local district heating to an ESCO Procurement procedure for Heat supply system in Limberg, Salzburg Existing networks Energy savings for local district heating suppliers Concepts for reducing inlet temperature of heating network 10

Climate Protection Goals Electricity Market Prices Smart City Goals Vienna Use of CHP installations in District Heating Paris Agreement Reduced CO2 Emissions Alternative Supply-source for Gas Alternative Supply-source for District Heating! Affordable Housing Social Housing Fair Heating Rates for Residents Task Concepts for an energy-efficient and sustainable Heat Supply Source: e7 11

60 hectares 23 construction fields 757.000 m² gross floor area 6.000 appartments 13.200 individuals 31 MW 47.700 MWh appartments school campus construction phase 1 + 2: 2019-2020 construction phase 3: 2025-2027 Source: basemap.at 12

Process (1) 13

Process (2) 14

Basic approach of low temperature district heating incl. local RES Use existing waste heat Use local renewable energy sources Low temperature heating system Solar PV Floor heating Floor cooling possible Solar HP Waste heat HP Max 60 C Better 15-30 C Cold heating network ~35/28 C HP Hot water storage Heat pumps Geothermal probes, seasonal storage 15

Heat supply concepts Mixed concepts Gas Heating plant Heat pump concepts 16

CO2 Emissions District heating Mixed Concepts Gas Heat Pump concepts Gas 17

Life cycle costs 3% District heating Mixed Concepts Gas Heat Pump concepts Gas 18

Examples of references in district heating General Orientation for district heating providers nationwide/for regions Study on Future Potential for District Heating and Cooling in Austria Study on Policy Instruments for Energy Planning New networks Feasibility of district heating solution for a specific district Feasibility study for sustainable alternative heating supply systems in the district Donaufeld in the City of Vienna New networks Procurement of local district heating to an ESCO Procurement procedure for Heat supply system in Limberg, Salzburg Existing networks Energy savings for local district heating suppliers Concepts for reducing inlet temperature of heating network 19

! Task Procurement of local heating system One private project developer Heating system and integration of local PV Private procurement procedure Competition between 3 companies Source: kofler architects 20

22.000 m² gross floor area 23 buildings 500 individuals 0,7 MW 1.300 MWh apartments supermarket, kindergarten construction phase: 2019-2023 Source: basemap.at 21

Technical concept for local heating network Quelle: Helmut Meisl 22

? Requests in competition Best concept for heating network and mandatory integration of energy from photovoltaic Heat tariff was fixed ESCO had to calculate financial subvention from project development company in order to cover costs for fixed heat tariff Innovative concept with lowest financial subvention won competition Source: Hillebrand 23

Examples of references in district heating General Orientation for district heating providers nationwide/for regions Study on Future Potential for District Heating and Cooling in Austria Study on Policy Instruments for Energy Planning New networks Feasibility of district heating solution for a specific district Feasibility study for sustainable alternative heating supply systems in the district Donaufeld in the City of Vienna New networks Procurement of local district heating to an ESCO Procurement procedure for Heat supply system in Limberg, Salzburg Existing networks Energy savings for local district heating suppliers Concepts for reducing inlet temperature of heating network 24

Concepts for reducing heating network temperature of hospitals Outlook Reduction of temperature in district heating network leads to improve energy efficiency and economic performance Example 1 Goal: Reduction of outlet temperature of buildings to district heating network Task: Analysis of technologies and heat flow in a hospital building to reduces outlet temperature Example 2 Goal: Temperature of existing steam district heating network will be reduced to max 90 C Task: Analysis of existing network and development of measures to reduce inlet temperature to 90 C 25

Thank you for your attention! Gerhard Hofer e7 Energie Markt Analyse GmbH Walcherstraße 11/43 1020 Vienna T +43 1 907 80 26 gerhard.hofer@e-sieben.at www.e-sieben.at 26