Solar Energy Resource, Cogeneration and Energy Efficiency Program Development

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Community Energy Independence Initiative Demonstra
tion Project
March 14, 2006
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What is the Community Energy Independence
Initiative?

• A City-wide Program that integrates
• Comprehensive energy efficiency
• Optimal solar potential of rooftops
• Distributed generation where appropriate
  (e.g. microturbines, fuel cells)
• Provides greater consumer and City control over
  costs
• Enhances electric reliability
• Reduces greenhouse gas emissions
• Achieves Sustainable City Plan goals
• Potential to create Net-Zero Energy City

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Solar Potential Analysis Ensure Roof
Compatibility

• Determine roof type (validated with on-site
  survey)

Examples _ Tile _ Asphalt Shingle _ Composite _
Tar and Gravel
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Solar Potential Roof Area Determination

• Measure dimensions of roof from aerial

400 2,800 3,200 sf
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Solar Potential Roof Area Determination

• Measure dimensions of roof from aerial
• Estimate shaded portion ()

35
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Solar Potential Roof Area Determination

• Measure dimensions of roof from aerial
• Estimate shaded portion ()
• Estimate obstructed area ()

40
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Solar Potential Roof Area Determination

• Measure dimensions of roof from aerial
• Estimate shaded portion ()
• Estimate obstructed area ()
• Account for roof type

__ Tile __ Asphalt Shingle __ Composite __ Tar
and Gravel
?
Example 3,200 sf - 35 - 40 800 sf
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Solar Study Results

• 24 million sq.ft. total usable roof area for
  solar
• 103 MW capacity potential from solar
  photovoltaics
• 350,000 sq.ft. of solar thermal for pool heating
  and commercial heating needs
• Ability to estimate any buildings solar potential

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Solar Survey Results

• Interviewed more than 250 property owners
• Considerable support for investing in
  cost-effective, integrated energy systems
• City should fill the role of program facilitator

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Energy Efficiency Potential
CEII Program Potential

• Overall savings of 38 in electricity
• Overall savings of 34 in gas consumption

Solar Potential

• 103 MW peak electric (69 of total peak) 350,000
  sq.ft. of solar thermal

Distributed Generation

• 41 MW of DG electric capacity w/ heat recovery

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Citywide Potential for Reduction in Electricity
Peak Generation Need
In this case all electricity is generated
within the city on a net basis, which means we
will still be using natural gas for distributed
generation.
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Environmental Benefits of CEII

• Greenhouse gas (CO2) reduction
• Smog (NOX) reduction
• Building Quality Improvements
• Reduced need for centralized power plants

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CO2 Emissions Reductions (Stationary Sources)
Electricity
Gas Heat
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Economic Benefits of CEII

• Most energy savings remain in community
• Increased property value
• Potential job creation
• Business retention and attraction

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Two-year CEII Demonstration Project

• Install integrated energy systems in 50
  residential, commercial, and municipal buildings
• Prepare implementation plan for Community-wide
  CEII
• Develop website/marketing plan for Community-wide
  CEII
• Revise City code to facilitate permitting of CEII
  projects
• Develop business model and financing plan for
  Community-wide CEII

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Santa Monicas energy future begins today