Transcript Slide 1

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Customer-side Smart Grid
Technologies
How will they change utility offerings?
Karen Herter, Ph.D.
Association of Women in Water,
Energy, and Environment Workshop
May 22, 2012
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Smart Grid Elements
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What does the “Smart Grid”
do for customers?
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Real-time Information
 Improves
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understanding of energy use
Time-based Incentives
 Accurately
3.
rewards energy management behaviors
End-use Automation (cost-effectiveness)
 Simplifies
energy management by customer or utility
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Customer-side Smart
Grid Technologies
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Monitor energy use
 site or appliance
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Display electricity prices
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Estimate energy costs
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Notify customers of utility
price or event signals
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Automate response to utility
price or event signals
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Centralize customer control
of appliance activity
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1. Real-time Information
Customers want personalized information & advice
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Smart Meters = DATA TO UTILITY
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Improved customer service by bill, phone or Internet
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Customer load shapes  personalized recommendations
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Program EVs, spas, and pool pumps for off-peak
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Install more efficient AC unit
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Offer free site visits for outliers?
Energy Displays = DATA TO CUSTOMERS
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Many potential applications
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Real-time household electricity use
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Customer-specific electricity pricing
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Bill calculators with “what-if” scenarios
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Event notification
Via mobile app, PC, or thermostat display
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Bill Comparison
Bill Comparison
Start Date 7/12/2011
Standard Rate: RSG
Billing Month: August
Account Number: 1234567
End Date 8/10/2011
Sherlock Holmes
221B Baker Street
Folsom, CA 95630
Summary Bill Comparison
Critical Peak Days This Month
Thursday, July 21, 2011
Thursday, July 28, 2011
Standard Bill
Summer Solutions Bill
$96.71
$77.42
Congratulations you saved 19.9% on your bill:
$19.29
Plus you earned from Auto Temp Control:
$8.00
Total savings this month:
$27.29
Your Bill on Standard Rate
Bill Component
Base Usage
Base-Plus Usage
Electricity Use Subtotals
System Infrastructure Fixed Charge
Standard Rate Charges
Monthly
KWh
700
88
788
Price per kWh
$0.1045
$0.1859
$0.1136
Charges
$73.15
$16.36
$89.51
$7.20
$96.71
Your Bill on Summer Solutions Rate
Bill Component
Off-Peak Base Usage
Off-Peak Base-Plus Usage
On Peak Usage
Critical Peak Usage
Electricity Use Subtotals
Summer Solutions Rate Charges
Monthly
KWh
700
46
38
4
788
788
Price per kWh
$0.0721
$0.1411
$0.27
$0.75
$0.0891
Charges
$50.47
$6.49
$10.26
$3.00
$70.22
$77.42
Summer Solutions rate
participants received a
Bill Comparison Report,
showing bill savings or
losses compared to what
they would have paid on
the Standard rate
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PC Energy Display
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PC Energy Display
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Thermostat Energy Display
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Screen with instantaneous kW and daily kWh
Scroll through appliances one at a time for Appliance group
Can be made default screen
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2. Time-Based Rates
Rewards are directly proportional to actions
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TOU-CPP rates have been found to be particularly effective
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especially when paired with thermostatic automation
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Added benefit of daily peak load reduction (not shown here)
N = number of studies
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Example TOU-CPP Rate
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3. End-use Automation
More cost-effective when paired with time-based rates
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Rate structure determines the technology
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Time-of-use rates  Programmable thermostats & timers
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Dynamic pricing  Communicating thermostats & switches
Provide technology assistance and financing options
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Rebates where cost-effective
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Options to purchase, rent, or borrow technologies
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Assistance with installation and use
Market determines technology form factors & features
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Standard protocols to enable plug and play technologies
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Ideally utilities recommend, customers choose
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Putting it all together…
Information + time-based rates + automation
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Both energy and peak load savings on non-event days
Significant load shed during events, with some pre-cooling and rebound
Even a small percentage of participating customers (10-20%) could have
a substantial effect on the system load shape
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Information isn’t enough
those with information only didn’t do much
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“Neither option” = information only
Peak and event load reductions greatest for Dynamic Rate
-8% -23% -24%
-8% -36% -53% -58%
-3% -9% -10% -8%
Statistically significant
kW savings over ATC
Values in bold indicate a statistically significant difference from “Neither option”
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Information enhances savings
but those without real-time information do well too
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Studies Currently In Progress
ARRA SGIG Consumer Behavior Studies
Sierra Nevada
Pacific Power OG&E MMLD
Rate Treatments
TOU
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CPP
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CPR
VPP
Non-Rate Treatments
Education
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Cust. Service
IHD
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PCT
DLC
Features
Bill Protection l
Experimental Design
Opt In
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Opt Out
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CVPS
VEC
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Power
CIC
SMUD
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DECo Total
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Thank you!
 Information
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in this presentation based on:
2008 Small Business Summer Solutions Study report
2010 Residential information & controls technology review
2010 Residential focus group summary
2011 Residential Summer Solutions Study report
To download these and other reports visit:
www.HerterEnergy.com
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Contact info:
Karen Herter
Herter Energy Research Solutions
www.HerterEnergy.com
916.397.0101
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