SDG&E s - Sustainable Communities Program

SDG&E s - Sustainable Communities Program February 21, 2014 Pete Pavao 2013 San Diego Gas & Electric Company. All copyright and trademark rights reserved.

Overview SDG&E Sustainable Communities Program Overview Case Studies - Solar PV Projects Case Studies Solar PV/BatteryStorage Projects San Diego Zoo Solar to EV Project Civita Borrego Questions

SDG&E Overview San Diego Gas & Electric (SDG&E) SDG&E is a regulated public utility that provides energy service to 3.4 million people through 1.4 million electric meters and 860,000 natural gas meters in San Diego and southern Orange counties. Our service area spans 4,100 square miles. Employees We employ about 5,000 people who work every day to deliver the energy our customers need. Our Parent Company Sempra Energy is a San Diego-based Fortune 500 energy services holding company whose subsidiaries provide electricity, natural gas and value-added products and services.

SDG&E s Commitment to Solar 2017 Projected Renewables Portfolio* 33% renewable energy by 2020 Over 1,500 MW of solar PPAs contracted today as part of our Renewables Portfolio Standard (RPS) 40 SDG&E-owned solar projects hosted by SDG&E customers (through Sustainable Communities Program) 216 MW Net Energy Metering (NEM), over 30K customers * Contracted as of January 2014 Smart grid technologies provide platform for diverse energy supplies 4

Sustainable Communities Program SDG&E works with customers to integrate SDG&E clean generation systems within energy efficient and sustainably designed buildings Program helps customers meet their environmental goals SDG&E systems supplies renewable energy to the customer s local community Aids participating schools and businesses in educating students, employees and customers about sustainability Reuben H. Fleet Science Center in San Diego s Balboa Park LEED Silver Certified Highly Energy Efficient Hosts 100 KW SDG&E PV system Supports SDG&E s future Smart Grid development 5

Sustainable Communities Program This program, started in 2004, works with our customers to create showcase, energy efficient, sustainable projects that incorporate SDG&E-owned clean generation systems. Integrate photovoltaics, plug-in electric vehicle (PEV) chargers, energy storage and energy management systems with advanced communication & control systems in support of the smart grid Systems photovoltaics, fuel cells & battery energy storage Photovoltaics 4.2 MW Fuel Cell - 400 kw Four projects with energy storage 224 kw/340 kwh battery Reduces intermittency of the PV system Helps SDG&E with peak shaving Installed, owned, maintained & operated by SDG&E Awarded the US Green Building Council s Leadership Award

Sustainable Communities Program They collectively generate enough energy at peak production to supply nearly 2800 homes. The energy produced prevents nearly 9 million pounds of CO 2 equivalent from entering the atmosphere each year. The GHG savings from the electricity produced is equivalent to not driving a car 11.9 million miles, or planting nearly 136,000 trees.

Steps in the SCP Process Contract terms: 20 year lease with options at years 10 and 15 to renew, purchase the energy system or request removal of the system Lease payment (if applicable) is paid annually, but the first five years are paid upfront Lease payment is $0.01/kWh per year, calculated up front based on nameplate of PV e.g. 100 kw PV annual lease payment of $1,700 PV/Clean Energy Installation: 1. SDG&E issues a RFP to approved solar vendors 2. SDG&E awards the bid 3. Solar vendor designs the PV/Clean Energy system 4. Solar vendor obtains permits 5. Work with construction schedule to install the system 6. Commission the system

Sustainable Communities Program These projects are located in communities throughout our service territory Projects include schools, municipal buildings, non-profits, research facilities and commercial buildings Most of these projects are LEED (Leadership in Energy and Environmental Design) certified by the US Green Building Council The energy is typically connected on the utility side of the meter and flows to the grid, helping us provide locally generated renewable energy to the communities where these projects are located.

Sustainable Communities Program The first 30 SCP projects were solar photovoltaic only As the utility began to focus on developing a Smart Grid, we created opportunities to include additional technologies such as fuel cells and battery energy storage Our showcase project at the San Diego Zoo incorporates solar canopies, electric vehicle charging stations and battery energy storage Educational dashboards were included in key projects to educate and inspire building occupants SDG&E s Energy Innovation Center featuring solar tracking technology

SCP Case Study Innovative Cold Storage Enterprises (ICE) PV Systems: ICE 2 SDG&E-owned Total 504 kw 504 kw 1,008 kw LEED Gold Certified Estimated Energy Savings: 3,409,639 kwh 11

SCP Case Study La Maestra Community Health Center SDG&E-owned 20 kw photovoltaic system LEED Gold Certified SDG&E provided technical assistance and the project is designed to be to 25.4% better than Title-24 Estimated Energy Savings: 364,717 kwh & 70 kw 12

SCP Case Study Sony Corporation SDG&E-owned 56 kw photovoltaic system LEED Gold Certified Energy Efficiency: Fitness Center and HQ 15% better than 2005 T-24 Parking Garage 75% better than 2005 T-24 13

SCP Case Study - Urban Corps of San Diego County SDG&E-owned 16 kw photovoltaic system LEED Certification for New Construction Urban Corps links job training and education with the preservation of natural resources for youth ages 18-25 SDG&E s Sustainable Experience Kiosk in lobby and signage throughout property - includes urban garden 14

SCP Case Study ARCHITECTS hanna gabriel wells SDG&E-owned 16 kw photovoltaic system LEED Gold Certified Educational dashboard in lobby First Net Zero Office Building in San Diego! Energy Efficiency Incentives: 48.1% better than 2005 T-24 Ted Walton Photography ARCHITECTS hanna gabriel wells 15

SCP Case Study - MESOM = Marine Ecosystem Sensing, Observation and Modeling Lab SDG&E-owned 61 kw PV system & energy storage system - 6 kw/10 kwh Targeting LEED Platinum Certification Educational dashboard in lobby Located at Scripps Institution of Oceanography at University of California, San Diego Customer installed electric vehicle charging station for occupants

The Suites at Paseo SDG&E-owned 35 kw PV system & energy storage system - 18 kw/30 kwh Targeting LEED Gold Certification Educational dashboard in lobby State-of-the-art student housing project near SDSU Customer installed 45kW fuel cell

Del Lago Academy SDG&E-owned 173 kw PV system & energy storage system - 100 kw/200 kwh Magnet high school focusing on biotechnology and medical sciences, and including environmental awareness in their curriculum

Solar-to-EV Project at the San Diego Zoo

Solar-to-EV Project at the San Diego Zoo Showcase Project in the Heart of San Diego A solar photovoltaics system that will harness energy from the sun to charge cars, store solar power for future use and provide renewable energy to the community Part of SDG&E s Sustainable Communities Program and a Smart City San Diego Project Smart City San Diego is a collaboration between SDG&E, City of San Diego, University of California San Diego, General Electric and CleanTECH San Diego

Solar-to-EV Project at the San Diego Zoo 10 solar canopies of 9 kw for a total of 90 kw 5 Plug-In Electric Vehicle (PEV) charging stations (includes an ADA accessible charging station) (installed and owned by a third party) Advanced energy storage using Li-Ion batteries 100 kw/100 kwh Reduce intermittency from PV PEV charging Offset peak power demands on the grid Educational dashboard features solar production, battery flow and electric vehicle charging sandiegozoo.org/sdgesolar

Solar-to-EV Project at the San Diego Zoo Advanced Energy Storage Used to Smooth PV Intermittency San Diego Zoo PV + AES Project (Intermi;ent Clouds - PV Smoothing) 140 120 Power (kw) 100 80 60 40 20 Ba0ery Power PV Power Grid Power (Smoothed) 0-20 - 40 12:15 PM 12:30 PM 12:45 PM 1:00 PM - 60

Energy Storage Schematic PV Array 1 MulN- Port Converter/ Inverter KEY: # Energy Flows DC AC 1 PV to Power Converter 2 Bi- direcdonal Converter to Ba0ery 3 Power Converter to EV - tbd 4 Bi- direcdonal inverter to grid Ba0ery 2 ES Port PV Port Power Converter ES Port Grid Port 4 Meter Meter EV Port 3 GRID Grid 23

Wide Angle View

Aerial View

Civita Civita is a new construction master-planned community project in San Diego by Sudberry Properties, Inc. SDG&E and the developer are working together to create a smart energy community that can be a model for other new communities. The developer has designed Civita to be highly energy-efficient, with electric vehicle charging equipment and sustainability elements in both the residential and commercial sectors. Image from Google Maps SDG&E will be installing distributed energy resources (DER) such as solar PV, fuel cells and energy storage, in West Park Apartments, an apartment project currently under construction within the community. All SDG&E s distributed energy resources will be interconnected on the utility s side of the meter, and will not impact the customer s energy use or bill. Customer will use the heat byproduct from the fuel cells to heat the pool, increasing the overall efficiency of the fuel cells. The apartment project is currently scheduled to be completed in Q3 2014. 26

Civita West Park Apartments Fuel cells and battery are planned to be located along west corridor west building PV will be located on top deck of parking garage of Building A 27

Civita - Special Projects with SDG&E Current Microgrid SDG&E s DER supporting the common area of West Park Apartments will provide support for refrigeration, HVAC, lighting, or plug load. Proposed systems include: 100 kw solar PV (50 kw SDG&E-owned, 50 kw customer owned) Six 5 kw fuel cells 100 kw/100 kwh energy storage Pecan Street Research Institute SDG&E has partnered with Pecan St. Research Institute to install energy monitoring devices on 50 residences at Civita. This research will provide in-depth analysis to customer energy use and test customer response to data and messaging. Proposed New Construction Demand Response pilot Home Area Network test bed New products and services directed towards Civita residents

Borrego- Project Summary Utilize advanced technologies to integrate and manage distributed resources within the Smart Grid Budget: $8.0M DOE and $2.8M CEC plus matching funds from SDG&E and partners Benefits: Integrate and leverage various generadon and storage configuradons Reduce the peak load of feeders and enhance system reliability Enable customers to become more acdve pardcipants in managing their energy use Distributed Energy Resources SubstaDon Energy Storage Customer Energy Management Microgrid Controller Home Energy Feeder Storage AutomaDon System Community Energy Technology 29 Storage

Questions? Peter Pavao Transmission & Distribution Technical Analysis Manager Asset Management & Smart Grid Projects San Diego Gas & Electric ppavao@semprautilities.com