Santa Rita Jail Going off the Grid Alameda

Santa Rita Jail Going off the Grid Alameda County/RESCO CCAEA Meeting February 5, 2010

The Energy Program Team Established in 1987 GSA/TSD ó ó ó 1 Program Manager 1 Project Manager 2 Electrician/Construction Coordinators Project and Cost Savings Oriented Minimum 10% IRR

Accomplishments Energy Program: 1987 -2010 $ Total Energy Saving Capital Projects Value = $50 M $ Total Energy Incentives and Refunds = $28 M $ Current Annual Utility Budget = $11. 5 M $ Current Annual Energy Cost Avoidance = $7. 5 M

Juvenile Justice Center LEED Gold 2007

Santa Rita Jail, Dublin, CA Construction 1984 -1989 Occupied Space: 1 million sqft. Peak Electrical Load: 3. 2 m. W (8/00) 18 Housing Units 4300 inmates 513 Sheriff’s Dept. staff 80 GSA staff

Santa Rita Jail 2007 Utility Cost Electricity: $ 980, 000 Natural Gas: $ 900, 000 Water: $ 860, 000 Sewage: $ 540, 000 Total: $ 3, 280, 000 (35% of GSA’s Utility Costs)

Fluorescent Lighting and Exhaust Fan Motor Retrofit (1995) 9, 000 Efficient Light Fixtures Retrofitted 600 Energy Efficient Motors Replaced

Largest Rooftop Solar Power System on a Government Facility (2002) $450 K Annual Energy Cost Savings, 10% of Energy Used from the Sun

The Chilled Water Plant Retrofit

Cool Roof Application

First Mega. Watt Class Fuel Cell Cogeneration Plant (2006)

Santa Rita Jail Integrated Energy & Water Efficiency Project (2009): Hot Water Boiler Plant Renovations Four High Efficiency Boiler 2 Domestic Hot Water Heat Exchangers

Santa Rita Jail: Reduced Hot Water Temperature 54 New Hot Water Coils 52 New Hot Water Expansion Compensators

Santa Rita Jail: Lighting Retrofit Gym before retrofit Retrofitted • 9000 Florescent Lighting Fixtures Replaced • 250 HID with Fluorescent Fixtures Gym after retrofit Permanently Delamped • 7000 Fluorescent Lamps

Santa Rita Jail: Water Efficiency Retrofitted • 1400 Inmate Flush Valves • 1400 Inmate Lavatory Valves • 150 Inmate Showers Valves Replaced • 160 Staff/Public Toilets • 30 Staff/Public Urinals • 210 Staff/Public Sink Aerators • 30 Staff Showerheads • 8 Smart Irrigation Controllers

Santa Rita Jail: Laundry Water and Heat Reclamation

Santa Rita Jail: Cooling Tower Water Treatment

Santa Rita Jail Energy & Water Efficiency Projects (1993 – 2009) Results $1. 7 M in Yearly Electrical Cost Savings: 65% Reduction $285 K in Natural Gas Cost Savings: 40% Reduction $540 K in Water/Sewage Cost Savings: 50% Reductions

Santa Rita Jail: Day Room Induction Lighting Retrofit (Feb 2010) 250 W/400 W Existing Metal Halide before retrofit Retrofit • 864 Lighting Fixtures 120 W Retrofitted Induction after retrofit Savings • 243 k. W Demand Reduction • 1. 7 M k. Wh Energy Reduction

Santa Rita Jail: Smart. Grid (2010)

Project Partners n Alameda County, California - Santa Rita Jail n Chevron Energy Solutions And… 22

SRJ Smart Grid Project Goals Existing 1. 2 MW Solar PV • True system integration of renewable and clean distributed energy resources Existing 1. 0 MW Fuel Cell Smart Grid New 12 k. W Wind Power • Superior Utilization and Control of renewable and clean distributed energy resources • Improved local utility grid stability, and demand response • Improved local power quality and reliability Reduction of DHW Energy Load New 2 MW Battery Facility Energy Efficiency Measures • Off-grid Island capability • Energy price arbitrage capability • Demand Response Capabilities New Solar Thermal

System Design – Load Impacts n Cloudy Spring Day – Solar Output Uneven 25

Santa Rita Jail Smart Grid Project Total Project Cost: $12, 100, 000 Funding: DOE Grant: RESCO Grant: PG&E Incentive Chevron ES Share: PG&E Share: County Share: $ 6, 200, 000 $ 1, 980, 000 $ 3, 000 $ 120, 000 $ 350, 000 $ 450, 000