Cogeneration on Campus

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Case Study presentation on a cogeneration project

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Cogeneration on Campus

  1. 1. Cogeneration on Campus Cogent Plant at UNSW Nalin Wickramasinghe 25 June 2010 Commercial-In-Confidence 1
  2. 2. Overview Cogent Energy – overview & business model  UNSW – Lowy Cancer Research Centre project  background  plant overview  benefits achieved  Campus configuration vs. CBD commercial tower  Future opportunities at UNSW campus Commercial-In-Confidence 2
  3. 3. Company Overview Distributed energy retailer and network operator  Licensed electricity retailer  Founded in early 2007 – offices in Melbourne & Sydney  Cogent is a BOOT scheme operator  Currently operating 6 plants – 5.4 MWe capacity  Further 2 plants under construction – 1.8 MWe  Since July 2009 fully-owned by Origin Energy Retail Commercial-In-Confidence 3
  4. 4. Cogent Energy Business Model  Cogent is a licensed retailer & also owns the plant:  Majority financed by Cogent  Cogent designs, configures & maintains plant - We invoice monthly metered energy – electricity & thermal  Competitive energy pricing compared to similar grid supplied Client’s scope includes:  Provision of suitable plant room with ventilation & sound attenuation  Bring electrical distribution & thermal reticulation systems to Cogent plant  Natural gas connection from meter set 12 year supply agreement with client (building owner)  Option to extend at end of period or buyout the plant at residual value Commercial-In-Confidence 4
  5. 5. UNSW Lowy Cancer Research Centre Dedicated cancer research facility - $127m project  Located on UNSW campus at Kensington  16,500 sqm facility accommodating 400 specialist staff  One of the largest facilities in southern hemisphere State-of-the-art facility with many ESD features Cogeneration was a key part of the ESD strategy Cogent Energy awarded contract to design, install & operate a cogen plant (12 year term) Construction commenced in September 09 and the cogen plant was commissioned in November 09 Commercial-In-Confidence 5
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  12. 12. Overview of UNSW Plant MTU gas reciprocating engine  772 kWe (4000 series V8 unit / 415v alternator)  Containerized within acoustic enclosure – rooftop location  Heat recovery module – 410 kW (hot water) Plant is configured in parallel with incoming feeder Excess Electricity fed back into the 11kV UNSW owned ring and utilized within the University Cogent operate plant peak & shoulder periods (15hrs x 5 days) with off-peak grid supply Plant is monitored & managed remotely in real-time via Back Office System Commercial-In-Confidence 12
  13. 13. Benefits of UNSW Cogen Plant Reliability: highly reliable parallel cogen solution running parallel with grid Energy Efficiency: up to 70% achieved Sustainability: Saving of approximately 1,600 tonnes of CO2 per annum Offers UNSW certainty of energy pricing & control over carbon emissions Commercial-In-Confidence 13
  14. 14. Advantages of the Campus Configuration  Typical CBD commercial tower configuration has constraints:  Parallel import with no export – plant sizing is critical  Considerable modulation with building load variation  Impacts plant efficiency  Campus configuration eliminates these:  Plant is connected in parallel with a LV feeder from UNSW Substation  Means plant can operate at full capacity – excess electricity exported in to ring & supplied to other UNSW buildings  “Exporting” achieved without the legal issues & energy market complexities  Similar utilization of hot water via campus reticulation Commercial-In-Confidence 14
  15. 15. Typical Commercial Building Profile Commercial-In-Confidence 15
  16. 16. UNSW Lowy Cancer Research Centre – Cogen & Grid Profiles HV Ring/Engine Split 1000 800 600 400 kW 200 KVAR KVA 0 -200 -400 -600 -800 "HV Ring Demand Real Power - Sliding" Cogen Total Demand Real Power - Sliding Commercial-In-Confidence 16
  17. 17. Future Opportunities on Campus Cogent is currently working on a 1.2 MWe trigeneration plant  Located at Central Energy Plant  Supply the new Tyree Energy Technology Building  Connected to electrical ring main & chilled water reticulation system Further development: Cogent doing preliminary feasibility on 2 more plants on campus  Capacities in the range 400 kWe – 800 kWe Efficient utilization of the 2 ring mains on the UNSW campus Further reticulation of hot water around the campus from cogen plant Commercial-In-Confidence 17
  18. 18. In General….. Market for DE has grown rapidly over the past 12 months City of Sydney 2030 project (330 MW) has added impetus We have made progress with over 7.0 MW committed in Sydney & Melbourne Still many challenges to overcome………. Commercial-In-Confidence 18
  19. 19. Thank you………………….. nalin@cogentenergy.com.au +61 (0)437 260 822 Commercial-In-Confidence 19

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