SMART GRID ACTIVITIES AT THE SACRAMENTO MUNICIPAL UTILITY

DISTRICT (SMUD)AUTOMATED HOME ENERGY

MANAGEMENT EXPERT MEETING Golden, ColoradoOctober 1, 2009

Mike Keesee, Project Manager

Energy Efficiency and Customer R&D

SMUD Profile• Service territory area: 900

sq mi (2331 sq km)• Population: 1.4 million• Board Members: 7

members elected by voters

• Revenues: $1.4 Billion• Employees: 2,200+• Summer Peak: 3299 MW

in July 2006• 2nd largest muni in

California, 6th in nation• Avg. Res Rate 10.5¢

/kWh

Smart Grid Vision

Project Elements

1. Energy Efficiency2. Renewables/Distributed Generation3. Energy Storage4. Demand Response5. Advanced Metering Infrastructure6. Dynamic Pricing7. Distribution System Improvements8. Generation Efficiency

Energy Efficiency

• Implement broad spectrum energy efficiency• Move toward net zero energy new homes and

buildings• Determine cost effectiveness of near net zero

energy existing homes and commercial buildings– Develop cost effectiveness matrix showing all

measures– Factor in carbon costs, increases in energy

prices and expected cost reductions for emerging technologies that move to commercialization

Renewables/Distributed Generation

• Install PV on rooftops and/or bulk installations on parking lots or other open spaces

• Consider other distributed generation technologies such as waste to energy plants from waste collected in neighborhoods

• Identify cost-effective combined heating, cooling and power (CHP) projects

• Energy efficiency and renewables form the basis for net zero energy homes and commercial buildings

Storage• Batteries installed on transmission system• Batteries installed on distribution system/renewable

load leveling• Wind energy storage

– Pumped hydro (Iowa Hill)– Batteries distributed on the T&D systems

• PHEV fleet– Vehicle to home charging– Energy charging/discharging controlled by SMUD

• Customer side battery storage– Reduce peak demand/levelize renewables– Customer can avoid super peak tariff charges

Demand Response• Test the functionality of various control devices

(PCTs, in-home displays, home automation controls)

• Test the functionality and operability of controllable appliances

• Implement various TOU and CPP rate structures

• Install auto DR for both customer and utility load management

• Determine what information, and in what form, best facilitates customers making decisions about energy use (appliance purchases, envelope enhancements, and behavioral changes)

Advanced Metering Infrastructure/Rates

• Enables time differentiated rates and critical peak pricing opportunities

• Enables communication with appliances and equipment for demand response

• Enables loading information and automation all along the supply chain

AMI Project Objective

The objective of the Advanced Metering Infrastructure (AMI) Project is to implement an AMI system for all 600,000 residential and commercial customers by the end of Q1 2011 that will:

– Significantly reduce ongoing operational costs;– Enable SMUD to improve service to our customers;– Create a foundation on which the SMUD can build a variety

of programs such as demand response, load management, energy efficiency, and time-based pricing programs; and

– Enable SMUD and our customers to reduce our impact on the environment.

Project OverviewSelected Vendors: Silver Spring Networks and Landis+Gyr

meters• Robust and scalable network that can be leveraged for

future “smart grid” applications• Two-way interval meters for all SMUD residential and

commercial customers• Ability to communicate with Home Area Networks (HAN)• 200A remote service switches• AMI Master Station software• Integration of Master Station to Meter Data Management

System (MDMS), SAP and Outage Management System• Development of CSR/customer tools to access and view

energy usage data• 50,000 point pilot begins 4th quarter 2009 in the two, most

difficult AMI regions— rural and urban• Full deployment proceeds directly after with completion

slated for the first quarter of 2011

Rates Discussion

Flat Rate Inclining Block Rate Time-Of-UseMedium Commercial Small Commercial20 kW < < 300 kW Residential 1st Tier Users Residential Commercial > 300 kW

Optional for other rates

Declining Block Rate

Worst Bad Fair Good

♦ Current rates range in how efficiently they signal underlying costs

TOU Rates Compared to Peak Profile

Pricing Potential♦ Alternative rate structures are better at matching costs

Strategy

• Customers will Choose• Deploy as many systems as possible

and see how they work• Has to work w/ our AMI System!

– Silver Springs Network– Landis & Gyr meters

Home of the Future

• 80% Reduction Annual Source Energy

• Zero Net Summer Peak Electric Demand: 4 PM - 8 PM

• Demonstrate the features of the home to the public and builders

54-60% better than 2005 Title-24LEED Platinum Home

• Attic R38 ceiling assembly (low density foam)• Wall 2x6/R19-R21 cavity/R12 insulating sheathing -R30 • Envelope .0002 SLA (4 ACH50) • Windows 0.29 U-value, 0.27 SHGC• Ducts Tight ducts, inside conditioned space• FURN Solar Assisted Hydronic space heating• A/C Aqua Chill Water Cooled AC (Home)• Ductless, HE, Mini-split Heat Pump (Casita )• Water Solar with HE boiler hot water backup• Lighting 100% CFL and LED Lighting• Solar 3.8 kW AC Solar Electric PV• Gas and/or Energy Star Appliances• Home Automation• Grid Tied Battery Back Up/Utility Dispatch

Experiments

• Pre Cooling

Battery Dispatch

GE Dashboard

• Wall Mounted, Hared-Wired

• Functions– Whole House Energy– PV Production– Lighting– Interior Shades– Green Switch– Water Use– Security

GreenBuilt Construction 8901 Quail Hill Way, Fair Oaks

Market Rate Flip• R-40 Attic Insulation with

Radiant Barrier• High Efficiency Windows• Air Sealing, Tight Envelope,

3ACH50• SEER 16/ HSPF 0.75 Heat

Pump• Tight, tested R-6 ducts• Heat Pump Water Heater w/

Solar Pre-Heat• Energy Star CFL fixtures and

Appliances• Solar Electric PV

Control4

• TV, Internet, Wireless, Touchscreen

• Functions– Whole House Energy– PV Production– Lighting– Interior Shades– Water Use– Security– T-Stat– Audio– Garage Opener– Any electric plug - Green

Switch

Housing Group Fund5832 Mascot Ave., Sacramento

Rehabed Abandoned Home/ Affordable Housing

• R-40 Attic Insulation with Radiant Barrier

• High Efficiency Windows

• Air Sealing, Tight Envelope, 3ACH50

• SEER 16/ 80% AFUE• Tight, tested R-6 ducts• Condensing Tankless• Energy Star CFL

fixtures and Appliances

GreenBox

• web-based interface • Functions

– Energy Use and Bill Monitoring– DR– Comparisons

More Information

Mike KeeseeProject Manager(916) 732-5244

Mkeesee@smud.org