Reed

Utility Perspective on Achieving Zero Net Energy Jeffrey Reed Market Development and Emerging Technology Sempra Energy Utilities

© 2002 San Diego Gas and Electric Co. and Southern California Gas Company. All copyright and trademark rights reserved.

Sempra Energy Utilities

• 

• 

Southern California Gas Company

– 

Nation’s largest natural gas distribution utility

– 

Serving over 20 million consumers in 20,000- square-mile service territory

San Diego Gas & Electric

–  – 

California

Natural gas and electric utility

Southern California Gas Company

Serving 3.4 million consumers in San Diego and southern Orange Counties San Diego Gas & Electric

2

The Energy World Tomorrow Smart Homes & Communities

Energy and Info Flow Consumer Supply Decisions

Smart Grid

Efficient and seamless flow of energy and information

DE R

Biofuels

CO2

Gas Storage Enhanced Oil Recovery

3

Smart Office

“Smart Home” -- Communication and Control will be Critical Enablers

4

State Policy – “Loading Order”

• 

Energy Efficiency

• 

Renewables

• 

Clean and Efficient Fossil

5

The Role of Utilities in Energy Efficiency

• 

Operationalize state energy efficiency policy by –  Supporting new technologies (identification, testing, piloting, sponsored RD&D) –  Promoting early adoption (customer education and incentives) -- act as “agent” for customer in identifying promising technologies

• 

Track record in the state has been outstanding

6

The California Long Term Energy Efficiency Strategic Plan

Four Bold Energy Efficiency Strategies•  • 

Commercial New Construction All new commercial construction in California will be zero net energy by 2030.

Residential New Construction All new residential construction in California will be zero net energy by 2020

• 

Residential / Small Commercial HVAC Heating, Ventilation, and Air Conditioning (HVAC) industry will be reshaped

• 

Low-Income Energy Efficiency All eligible low-income homes will be energy efficient by 2020

Note: Federal goal of Carbon Neutral buildings by 2030 7

WHERE ARE WE TODAY? Commercial Buildings (US Avg.) Existing commercial buildings use btu/sf/yr Buildings rebuilt to code achieve sf/yr Best available building design Best available with PV

Energy Use +/- 90,000 +/-70,000 +/-40,000 +/-10,000

Residential Buildings (US Avg.) Existing Single Family Homes sf/yr New Single Family Homes sf/yr Zero Net Energy Goal

+/- 0 8

Source: Commercial-NREL, Residential-EIA

btu/

btu/sf/yr btu/sf/yr

+/-43,800

btu/

+/-25,600

btu/

btu/sf/yr

Elements of the Solution

•  Energy Management / Smart Home •  Efficient Building Envelope and systems •  Super efficient lighting systems with controls •  Low energy HVAC systems •  Renewable energy with storage •  Comprehensive design tools

9

EXAMPLES OF EFFICIENT BLDG. SHELLS

Cool roofs eco-structure magazine website

Electrochromatic Windows Sage Glass

Triple Insulated Window Alpen Energy Group

Insulated Concrete Forms (ICF) Concrete 4U Website

Structural Insulated Panels (SIP) SIP Home Systems Website

10

Can We Get There by 2020?

Smart Home Efficient Lighting and Appliances

100% Building Energy Req’t

Building Envelop Efficient HVAC

15%-20%

20%-25% Distributed Generation and Energy Storage

η

Contributions to Zero Net

11

Adoption Curves

adio

FM R

Phone

VCR Color TV

TV PC

Cable TV

12

Internet

~10% - 15% of Households

13

Question – Zero Net at What Scale?

• 

Zero net what? –  Zero net buildings –  Zero net communities –  Zero net society

• 

Ends versus means –  Low environmental footprint –  Efficient use of energy

• 

Technology and economics should drive the scale

• 

Smart Grid will enable solutions at all scales – nano to macro

14

Keys to Success

• 

Innovation pipeline (universities and VC’s) –  Focus (Climate Change, energy independence) –  Funding (stimulus) –  Development and commercialization cycle time

• 

Consumer Adoption –  Education and outreach –  Incentives –  Standards –  “Soak time”

•  Flexible policy incorporating the natural timelines of technology development and consumer behavior 15

A Technology Roadmap for Net Zero Energy Buildings

Questions ??

Current US Energy Use Profile Residential

Commercial

Source: US DOE 17

17