Community EnergyIndependence InitiativeDemonstration Project

March 14, 2006

• 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

What is the Community Energy Independence Initiative?

Solar Potential Analysis –Ensure Roof Compatibility

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

Examples:

_ Tile

_ Asphalt Shingle

_ Composite

_ Tar and Gravel

Solar Potential –Roof Area Determination

• Measure dimensions of roof from aerial

400 + 2,800 = 3,200 sf

Solar Potential –Roof Area Determination

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

35%

Solar Potential –Roof Area Determination

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

40%

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

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 building’s solar

potential

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

Energy Efficiency Potential:• Overall savings of 38% in electricity• Overall savings of 34% in gas consumption

Solar Potential:

Distributed Generation:

CEII Program Potential

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

• 41 MW of DG electric capacity w/ heat recovery

Citywide Potential for Reduction in Electricity Peak Generation Need

-100

-50

0

50

100

150

200

Baseline with Energy Efficiency with Non-SolarDistributed

Generation (DG)

with Solar

MW

Cap

acit

y

Municipal

Industrial

Commercial

Residential

Potential Export During Peak*

* 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.

Environmental Benefits of CEII

• Greenhouse gas (CO2) reduction

• Smog (NOX) reduction

• Building Quality Improvements• Reduced need for centralized power

plants

CO2 Emissions Reductions (Stationary Sources)

0

200

400

600800

1,000

1,200

1,400

1,600

Baseline Post-Implementation

CO

2 E

mis

so

ns

, mill

ion

lb/y

r

Electricity

Gas Heat

Economic Benefits of CEII

• Most energy savings remain in community

• Increased property value• Potential job creation• Business retention and attraction

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

Santa Monica’s energy future begins today