GeniLac. A thermal network for Geneva s city centre using water from Lake Geneva

Transcription

1 GeniLac A thermal network for Geneva s city centre using water from Lake Geneva 7 th European Conference on Sustainable cities and town Michel Monnard

2 GeniLac: Key aspects 1. A cooling network: Why? 2. Functioning of the project: How? 3. Energy distribution zones: Where? 4. Execution of the project: When? 5. Benefits to the client: What? 2

3 GeniLac: Key aspects 1. A cooling network: Why? 2. Functioning of the project: How? 3. Energy distribution zones: Where? 4. Execution of the project: When? 5. Benefits to the client: What? 3

4 GeniLac: Why? Key issues Commitment to sustainable development Reduction of electricity consumption Reduction of CO 2 emissions Greater energy independence Increase in the use of abundant renewable energies Historical context Success of the Genève-Lac-Nations project (GLN): connection of the United Nations quarter Recognition of GLN in the EU s CONCERTO initiative Versoix city centre the espace Versoix building Objective To develop a large urban cooling and heating network 4

5 GeniLac: Key aspects 1. A cooling network: Why? 2. Functioning of the project: How? 3. Energy distribution zones: Where? 4. Execution of the project: When? 5. Benefits to the client: What? 5

6 GeniLac: How? Potential connectable power Pumping capacity : in phases of 50 MWth up to 250 MWth : up to 6.8 m³/s (24,500 m³/h) Investment : in phases of CHF 50 million up to CHF 280 million ENERGY CONSUMER PUMPING STATION SUCTION STRAINER Proposed services: Cooling and air-conditioning for buildings Option to heat buildings by means of heat pumps (gas boiler as backup if necessary) 6

7 GeniLac: How? Distribution network Vengeron Depth: 45 m Pumping station Water supply pipe: 5 km under the lake 7

8 GeniLac: Example of a sub-station BIT: Cooling heat exchangers, 2 x 3 MW Condenser heat exchangers, 6 MW Sécheron site: 2 heat pumps Power: 250 kw and 350 kw 8

9 GeniLac: Temperatures at -45 m Summer: temperatures below GLN Winter: temperatures above GLN January February March April May June July August September October November December Typical year GLN water intake (-35 m) GLN (-35 m) Absence of temperature peaks at -45 m => Temperature guarantee for client GeniLac (-45 m) 9

10 GeniLac: Key aspects 1. A cooling network: Why? 2. Functioning of the project: How? 3. Energy distribution zones: Where? 4. Execution of the project: When? 5. Benefits to the client: What? 10

11 GeniLac: Where? City centre Airport zone 11

12 GeniLac: City centre Cornavin Paquis Seujet Bergues Jonction Artamis Cité Rive PAV 12

13 GeniLac: Airport zone PALEXPO zone Organisations zone AIG zone Balexert Golden Rectangle zone Blandonnet zone ICC zone 13

14 GeniLac: Key aspects 1. A cooling network: Why? 2. Functioning of the project: How? 3. Energy distribution zones: Where? 4. Execution of the project: When? 5. Benefits to the client: What? 14

15 GeniLac: Execution of the project First client connections Autumn 2011 Summer 2012 Summer

16 GeniLac: Key aspects 1. A cooling network: Why? 2. Functioning of the project: How? 3. Energy distribution zones: Where? 4. Execution of the project: When? 5. Benefits to the client: What? 16

17 GeniLac: Benefits to the client Administrative aspects: streamlined procedures Simplified energy concept (OCEN) Compliance with standard SIA 382/1 (Swiss air-conditioning standard): temperature yields and levels Less noise problems (OPB) (Swiss noise abatement order) Decrease of the use of refrigerant gas (Cantonal Pharmacist - ORRChim) Technical aspects: Guaranteed heat supply Opportunity to eliminate outdoor installations New use of roof spaces Raising building heights 17

18 GeniLac: Ecological commitment for the client Decrease of the use of greenhouse effect refrigerants Montreal Protocol Use of a 100% renewable natural resource Lake water Reduction of your electrical energy consumption Increased efficiency of the cooling system Improvement of the building s energy performance New energy certificate New label Reduction of your CO 2 emissions Compliance with and anticipation of the application of the CO 2 law 18

19 GeniLac: Client s financial interest Reduced investments in technical equipment No more renewals of heat generation equipment Reduced operating costs Reduced mechanical maintenance Decrease in risk of Legionnaires disease Increase in property value of the building Enhanced overall energy performance (new energy class) Savings on future CO 2 taxes Possibility of a heating option using a heat pump 19

20 GeniLac: Breakdown of the offer Connection cost Participation in the network and sub-station investment Reduction Based on the residual value of the existing heat production system Power demand charge (fixed part) Includes: maintenance + operation + materials Subscribed power defined by a third-party engineering company Price of energy consumed (variable part) Attractive pricing structure depending on return temperatures (efficient use of the network) 20

21 GeniLac: Mandates for external consulting offices Specification of the connected power requirement Adapted, customised solutions Basic solutions Direct cooling Heating/Domestic hot water For buildings Main options Better quality of life, low energy consumption Heating/Domestic hot water Gas backup Direct cooling Backup cooling system Direct cooling Backup cooling system Heating/Domestic hot water Gas backup Submission of offers 21

22 GeniLac: Conclusions A thermal network project on a city-wide scale using a renewable natural resource financially attractive in the long term A large-scale project involving you Thank you for your attention 22