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
Monitor energy use
site or appliance
Display electricity prices
Estimate energy costs
Notify customers of utility
price or event signals
Automate response to utility
price or event signals
Centralize customer control
of appliance activity
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1. Real-time Information
Customers want personalized information & advice
Smart Meters = DATA TO UTILITY
Improved customer service by bill, phone or Internet
Customer load shapes personalized recommendations
Program EVs, spas, and pool pumps for off-peak
Install more efficient AC unit
Offer free site visits for outliers?
Energy Displays = DATA TO CUSTOMERS
Many potential applications
Real-time household electricity use
Customer-specific electricity pricing
Bill calculators with “what-if” scenarios
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
TOU-CPP rates have been found to be particularly effective
especially when paired with thermostatic automation
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
Rate structure determines the technology
Time-of-use rates Programmable thermostats & timers
Dynamic pricing Communicating thermostats & switches
Provide technology assistance and financing options
Rebates where cost-effective
Options to purchase, rent, or borrow technologies
Assistance with installation and use
Market determines technology form factors & features
Standard protocols to enable plug and play technologies
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
Within
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CVPS
VEC
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MN
Power
CIC
SMUD
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DECo Total
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Thank you!
Information
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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