Capital Deferment Project
Appaloosa Pilot Program
LPPC Rate Committee Meeting
May 2013
Matt Dudden
Colorado Springs Utilities
Service territory = approximately 491 square miles
All four services are fully automated meters- AMR
implementation completed in 2010
• 212,966 electric meter accounts
• 189,111 gas meter accounts
• 135,019 water meters accounts
Electric System Load Duration
3
Problem
Plenty of system capacity, but…
Circuit exceeds design guidelines
Electric Distribution Load Forecast
What we do first…
•
Verify large customer forecasts
•
Perform phase balancing
•
Transfer load to adjacent circuits
•
Analyze contingency scenarios
•
Perform risk assessment (load
What we do next…
• Select low risk circuit with slow,
steady growth
• Determine cost of capital
• Determine NPV
duration & vacancies)
Ranking Criteria
•Circuit loading by 2013
•Circuit load factor
•Circuit peak to system peak
•Transformer loading by 2013
2013 Target Circuits
Circuit Selection Criteria
July 2009 Circuit Load Factor
Appaloosa
Ranking Criteria
•Circuit loading by 2013
•Circuit load factor
•Circuit peak to system peak
•Transformer loading by 2013
Peak Demand
Peak = 8.41 MW
900
2009 Coincident Peak Circuit Loading
Appaloosa
9.00
800
8.00
700
7.00
600
6.00
500
5.00
400
4.00
300
3.00
200
2.00
100
1.00
0
0.00
12
:3
0…
4:
30
A…
8:
12
4:
30
:3
30
A…
0…
P…
Hour of the Day
8:
11
30
:3
P… 0…
Circuit Load Factor = .57
AP-3 Circuit Peak (MW)
System Peak (MW)
Average Demand
Ave. = 4.78 MW
System
AP-3
Circuit Selection Criteria
Circuit 12AP-3: MW Savings Required
10.00
9.50
Expected Circuit Forecast
0.66
8.50
0.80
0.76
0.71
0.85
High Circuit Forecast
Low Circuit Forecast
0.11
8.3 MW Design Guide
8.00
7.50
2009
2010
2011
2012
2013
2014
Transformer Appaloosa #2 Forecast
14.00
12.00
1.061
1.45
1.58
1.70
1.82
1.95
Appaloosa #2
10.00
MVA
MW
9.00
Circuit Design Capacity
Design Rating
8.00
Nameplate Rating
6.00
4.00
2.00
0.00
2009
2010
2011
2012
2013
2014
“Appaloosa” Initiative
Deferring the investment by:
• modifying existing engineering planning design
• incorporating new and existing DSM programs
and rates options
• leveraging current and new technology-AMI
• allowing customers to understand usage data
Appaloosa Circuit
Appaloosa
Substation
Circuit Demographics
Appaloosa - Target Circuit
2009 Total Circuit
Residential kWh
2009 % kWh
Residential
2009 % KW
Residential
(contribution to
peak)
29,872,081
86.94%
90.12%
2009 Total Circuit
Commercial kWh
2009 % kWh
Commercial
2009 % KW
Commercial
(contribution to
peak)
4,483,514
13.05%
9.98%
3705 total service points
98.03% residential
1.97% commercial
Residential Market
•1512 Customers >800kwh
Commercial Market
•8 Customers >25,000kwh
Appaloosa Pilot Solutions
 Circuit ECO Premium
• Forecast circuit load
• Call event - no override
 Circuit Time of Day
• Reduce circuit peak
• Summer/winter peak
• Provide customer with
usage data (manually)
 CFL Bulb Exchange
• Marketing- schools and
community centers
• DSM staff manned booth
• Up to 15 per customer
 Commercial Audits
• 8 commercial customers
• CSU commercial audit
• Provide costing
Appaloosa Goal
Circuit 12AP-3: MW Savings Required
10.00
2010 Expected
Circuit Forecast
9.50
Circuit Design
Capacity
MW
9.00
0.66
0.71
0.76
0.80
0.85
Low Circuit
Forecast
8.50
0.11
8.00
7.50
2009
High Circuit
Forecast
2010
2011
2012
2013
2014
Rate Design
Appaloosa Circuit Survey
Time of Use Rate
57% of the
customers indicated
they would “likely be
willing to shift usage”
Ideal incentive
should be set to
save the customer
between $30-40
Rate Design
• Circuit Time of Use
• Address circuit peak
• Summer/winter peak
• Provide customer with
usage data (manually)
• ECO Premium
• Forecast circuit load
• Call event - no override
• Utilize ECO Standard
Rate Design
Starting Customer – 800 kWh
•Circuit Average - 88% off peak
•No shift-break even point
•3% shift customer savings $8.55
Time of Use Pilot
Appaloosa Circuit
Mid Range Customer
1300 kWh
3% shift
Customer savings $12.22
No shift
Costs customer $1.67
Time of Day Rate Savings
TOD Pilot Load Reduction
Average non-participating
12AP-3 customers
(summer)
load profile
Time of Day
12AP-3 Customers
(summer)
drop of ~ .8 kW
Temp Set Back Load Reduction
Average non-participating
12AP-3 customers
(summer)
load profile
ECO Premium
12AP-3 Customers
(summer)
drop of ~ 1.9 kW
Duty Cycle Load Reduction
Average non-participating
12AP-3 customers
(summer)
load profile
ECO Regular
12AP-3 Customers
(summer)
drop of ~ 1.0 kW
All DSM Customer Composite
Average non-participating
12AP-3 customers
(summer)
load profile
All DSM
12AP-3 Customers
(summer)
drop of ~ 1.5 kW
Appaloosa Pilot Results
 Circuit ECO Premium  CFL Bulb Exchange
•
•
•
•
•
36 participated
18 events
4° temperature setback
Avg. 1.9 kW savings
11 regular ECO
 Circuit Time of Day
• 5 participated
• Avg. 0.8 kW savings
• $41.71 avg. savings
• Marketing- schools and
community centers
• DSM staff manned booth
• Up to 15 per customer
• 472 total exchanged
 Commercial Audits
•
•
•
•
8 commercial customers
CSU commercial audit
Provide costing
Zero implementations
Lessons Learned
Process-Technology
 Strong upfront
marketing campaign
 2-way meter
technology
 Collecting load profile
data
 Reliable load cycling
vendor
Customer
 Customers didn’t shift
use - conserved
 Customers want
consumption data
 Customers can change
behavior
 Customers want to
save money
 Monthly incentive may
not be needed for AC
cycling
Questions and Comments