Santa Rita JailSanta Rita Jail Going off the GridGoing off the Grid

Alameda County/RESCO Alameda County/RESCO CCAEA MeetingCCAEA Meeting

February 5, 2010February 5, 2010

The Energy Program TeamThe Energy Program Team

Established in 1987GSA/TSD

1 Program Manager 1 Project Manager 2 Electrician/Construction

Coordinators Project and Cost Savings

Oriented Minimum 10% IRR

AccomplishmentsAccomplishments

$ 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

Energy Program: 1987-2010Energy Program: 1987-2010

Juvenile Justice Center LEED Gold 2007

Results

SSaanta Rita Jail, Dublin, CAnta Rita Jail, Dublin, CA

Construction 1984-1989 Occupied Space:

1 million sqft.

Peak Electrical Load: 3.2

mW (8/00) 18 Housing Units 4300 inmates 513 Sheriff’s Dept. staff 80 GSA staff

SSaanta Rita Jailnta 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 Fluorescent Lighting and Exhaust Fan Motor Retrofit (1995) Exhaust Fan Motor Retrofit (1995)

9,000 Efficient Light Fixtures Retrofitted 600 Energy Efficient Motors Replaced

Largest Rooftop Solar Power Systemon a Government Facility (2002)

$450K Annual Energy Cost Savings, 10% of Energy Used from the Sun

The Chilled Water Plant RetrofitThe Chilled Water Plant Retrofit

Cool Roof ApplicationCool Roof Application

First MegaWatt Class Fuel Cell First MegaWatt Class Fuel Cell Cogeneration Plant (2006)Cogeneration Plant (2006)

Santa Rita Jail Integrated Energy & Santa Rita Jail Integrated Energy & Water Efficiency Project (2009):Water Efficiency Project (2009):

Hot Water Boiler Plant Renovations

Four High Efficiency Boiler 2 Domestic Hot Water Heat Exchangers

Santa Rita Jail:Santa Rita Jail: Reduced Hot Water Temperature

54 New Hot Water Coils 52 New Hot Water Expansion Compensators

Santa Rita Jail:Santa Rita Jail: Lighting Retrofit

Gym before retrofit Gym after retrofit

Retrofitted • 9000 Florescent Lighting Fixtures

Replaced • 250 HID with Fluorescent Fixtures

Permanently Delamped • 7000 Fluorescent Lamps

Santa Rita Jail:Santa Rita Jail: Water Efficiency Retrofit

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:Santa Rita Jail: Laundry Water and Heat Reclamation

Santa Rita Jail:Santa Rita Jail: Cooling Tower Water Treatment

Santa Rita Jail Santa Rita Jail Energy & Water Efficiency ProjectsEnergy & Water Efficiency Projects

(1993 – 2009)(1993 – 2009)

Results $1.7M in Yearly Electrical Cost

Savings: 65% Reduction

$285K in Natural Gas Cost Savings: 40% Reduction

$540K in Water/Sewage Cost Savings: 50% Reductions

Santa Rita Jail:Santa Rita Jail: Day Room Induction Lighting Retrofit

(Feb 2010)

250W/400W Existing Metal Halidebefore retrofit

120W Retrofitted Induction after retrofit

Retrofit• 864 Lighting Fixtures

Savings • 243 kW Demand Reduction•1.7M kWh Energy Reduction

Santa Rita Jail: Santa Rita Jail: SmartGrid (2010)

22

Project PartnersProject Partners

Alameda County, California - Santa Rita Jail

Chevron Energy Solutions

And…

Existing 1.2MW

Solar PV

Existing 1.0MW

Fuel Cell

SRJ Smart Grid Project

New 12kW Wind Power

New Solar Thermal

New 2MW Battery

Smart Grid

• True system integration of renewable and clean distributed energy resources

• 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

• Off-grid Island capability

• Energy price arbitrage capability

• Demand Response Capabilities

Project Goals

Facility Energy Efficiency MeasuresReduction

of DHWEnergy Load

25

System Design – Load ImpactsSystem Design – Load Impacts Cloudy Spring Day – Solar Output UnevenCloudy Spring Day – Solar Output Uneven

0

500

1000

1500

2000

2500

3000

3500

0 3 6 9 12 15 18 21

Hour of Day

Ele

ctri

c P

ow

er (

kW)

x

Battery Charging

Battery Discharging

Photovoltaics

Net PG&E Meter Load

Fuel Cell

Santa Rita JailSanta Rita JailSmart Grid ProjectSmart Grid Project

Total Project Cost: $12,100,000

Funding: DOE Grant: $ 6,200,000 RESCO Grant: $ 1,980,000 PG&E Incentive $ 3,000,000 Chevron ES Share: $ 120,000 PG&E Share: $ 350,000 County Share: $ 450,000