ECONOLER

1

• Case Study
• Collège Lévis-Lauzon

2
Collège Lévis-Lauzon

• Situated in Canada
• Town of Lévis, on the south shore of the St.
  Lawrence River (facing Québec city)
• 5,000 students

3
Project Outline

• Investment CAD 1.2 million
• Expected savings per year
• CAD 168,000
• 10 years open book contract (starting in 2004)

4
Terms of Contract

• Follows a guarantee performance model
• Contract includes 15 profit plus a 10 premium
  for the guarantee of savings
• Includes a virtual bank in which savings
  generated over a year are accrued
• The virtual bank pays the monthly savings to ESCO
• This virtual bank will cover any eventual
  savings shortfalls for a month (if excess fund
  remains)
• The ESCO will pay the shortfall if the virtual
  bank is empty
• Special provisions
• If college decides to buy-back contract, half the
  savings in the virtual bank will be remitted to
  ESCO
• Allow extra savings in virtual bank to be
  reinvested in further energy savings measures

5
Project Included the Following Measures

• Lighting efficiency
• New wiring scheme One ballast for four T8 lamp
  fixtures (instead of one for two)
• Implanted on 80 of colleges total fixtures
• HVAC (climate control)
• Variable speed drive (VSD) system installed on
  two large ventilation systems
• Replacement of 175 constant volume terminal boxes
  for VAV boxes (variable air volume)
• Motion detectors installed in rooms
  (automatically reduced air flow to 40 when
  unoccupied)

6
Measures Continuation

• Off-peak heating
• Existing electric boiler, de-rated from 2,800 kW
  to 1,000 kW, so it could provide low cost
  off-peak heating during night
• Boilers system upgrade
• In the past, an absorption chiller was installed
  resulting in an over-size boilers capacity for
  their needs
• Kept one large boiler, to be used during the
  winter peak period
• Replaced the other large boiler with two smaller
  units, providing better efficiency during low
  load conditions

7
Project Results

• Savings have been greater than expected
• Beginning of discussions on the use of virtual
  bank savings to implement new energy efficiency
  projects