Proposed CoGeneration and Photovoltaic Project

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Proposed CoGeneration and Photovoltaic Project

• Presented to Board of Trustees
• 1/5/04

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Overarching Goal

• Continuous improvement in our energy management
  performance.
• Supports Statewide Energy Management Program
  (SEMP) AB29X, 4/11/01
• the use of renewable or other distributed energy
  systems

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Electricity Consumption
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Project Goal

• Two CoGeneration plants capable of producing 240
  kW each.
• Two Photovoltaic installations rated at 388 kW

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What is CoGen?

• Also known as Combined Heat Power or (CHP).
• Series of micro-turbines that are powered by
  natural gas to produce electricity. The waste
  heat is captured and used to heat the swimming
  pool water.

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Typical InstallationCal State Northridge
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Proposed CoGen Installation

• Four 60kW microturbines located near the pool
  mechanical rooms on each campus.
• Sufficient heat produced to meet pool demand
  during certain times of year. (One engineer was
  concerned that too much heat would be produced.)

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Photovoltaics?

• Composite glass panels that convert sunlight to
  electrical energy.

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PV Technology Fundamentals
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Foothill PV Installation

• Cover 60 parking places in Lot 2
• 8,540 square feet
• Annual production 158,400 kWH

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The is the largest PV carport in the world,
providing 1,000 KW to the Naval Base in Coronado
Island (by the PowerLight Corporation)
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Typical Car Port Installation
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DeAnza PV Installation

• Located on top of Lot C Parking Structure
• Covers 120 parking spaces
• Annual production 408,000 kWH
• Tracking system allows panels to follow sun to
  maximize production.

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Typical Tracker Installation
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Value to District?

• Project will produce 63,000,000 kWH over 15 year
  period or about 24 of total use.
• District used 17,500,000 kWH in 2002-03
• Environmentally sound solution
• CoGen is very efficient
• Photovoltaics cleanest way to produce electricity

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Why we should do this!

• Promotes environmental stewardship
• Generates goodwill in the community
• Generates visibility for the District
• Provides opportunities for education and outreach
• Places District in competitive position for
  future rate fluctuations.

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Electricity Rates
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Performance ContractingAuthorized by Govt Code
4217

• Anticipated cost to the public agency for
  conservation services will be less than the
  anticipated marginal cost of the energy that
  would have been consumed by the public agency.
• District successfully completed 7.5 million
  performance contract with Viron Energy Services
  in 1998-99.

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Proposed Contract

• Viron purchased by ChevronTexaco now known as
  Chevron Energy Services
• Total contract 5,146,000
• State Federal incentives 1,990,000
• District to provide utility bldgs for CoGen at
  estimated cost of 400,000 source is funds
  earmarked for energy conservation.

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Proforma Fifteen Years

• Annual Savings - 10,664,000
• Operating cost - 5,478,000
• Loan payments - 4,410,000
• Net savings 776,000
• Based on investment of 3,556,000