The third and final presentation on utility rates to save your business money in California.

1. A Quick Review of
SCE’s TOU-8 Rate
IceBank Energy Storage
Terry Andrews
CALMAC Manufacturing Corp.
tandrews@calmac.com
(714)585-6121

2. SCE’S TOU-8 RATE:
WHY IT IS A FANTASTIC RATE
FOR ENERGY STORAGE
Energy Storage for a Cooler Future ™

3. CALMAC Mfg.
Corp.2012©
Base Load
Lighting
Fans
Pumps
Cooling
0
200
400
600
800
1000
1200
1400
1600
1800
2000
k
W
Demand - $/kW
SCE’s TOU-8 Rate – Demand verses Energy Charges

4. CALMAC Mfg.
Corp.2012©
SCE’s TOU-8 Rate, 2-50 kV Service
• Demand charges are additive for many buildings
– (Summer peak period is noon to 6pm, June thru September, 4 months)
• Summer demand charges include:
+ $ 23.74/kW during peak period
+ $ 14.88/kW for the facilities related demand
• What the heck is a facilities demand charge?
– It’s a 2nd demand charge for high peak demand that occurs during the
previous month….independent of the time of day. It is defined in the
rate sheet as follows:
”The Facilities Related Component shall be for
the kW of Maximum Demand recorded during
(or established for) the monthly billing period.”
$38.62/kW

5. CALMAC Mfg.
Corp.2012©
Base Load
Lighting
Fans
Pumps
Cooling
0
200
400
600
800
1000
1200
1400
1600
1800
2000
k
W
On Peak Demand – $23.74/kW
Facilities Demand - $14.88/kW
Effective Total Demand:
$38.62/kW
SCE’s TOU-8 Rate – Effective Demand Charges
Over $56,000 per month
In 4 summer months

6. CALMAC Mfg.
Corp.2012©
Base Load
Lighting
Fans
Pumps
0
200
400
600
800
1000
1200
1400
1600
1800
2000
k
W
Charging
Storage
600 kW Shed
SCE’s TOU-8 Rate – Effective Demand Charges
For 4 Summer Months,
Effective Total Demand:
$38.62/kW
Approximately
$20,000/month saved
in 4 summer months

7. CALMAC Mfg.
Corp.2012©
Summer “Blended” Costs – Day vs. Night
28 cents vs. 6 cents per kWh – 4X more during the day

8. CALMAC Mfg.
Corp.2012©
SCE’s TOU-8 Rate, 2-50 kV Service
• In the winter (October through May) there is no
peak period, the mid peak period covers the day.
• If we assume the building is an office, school or a
building with a similar cooling load profile the peak
is likely to occur in the afternoon.
• Thus, at this time the demand savings would be
derived from reducing the size of facilities related
demand …..and this is a significant charge:
$14.88/kW

9. CALMAC Mfg.
Corp.2012©
Winter “Blended” Costs, Day vs. Night
14 cents verses 7 cents per kWh – ½ price sale at night

10. CALMAC Mfg.
Corp.2012©
SCE’s TOU-8 Rate, Summary
• The demand charges are significantly large and
make day time energy costs expensive, FOR THE
RIGHT BUILDING.
• There are potentially large savings when shifting
load in a daytime peaking building.
• Electricity in the summer is approximately 79%
cheaper at night
• Electricity in the winter is approximately 50%
cheaper at night

11. CALMAC Mfg.
Corp.2012©
Project Examples
Edwards AFB
CA
Encinitas Civic Center
Encinitas, CA
Nordstrom Dept. Store
Hawaii
Los Positas
Livermore, CA

12. CALMAC Mfg.
Corp.2012©
Project Examples
Irvine Presbyterian Church
Irvine, CA
Los Angeles Community College,
Los Angeles, CA
Chabot College
Hayward ,CA
California State Lottery
Sacramento, CA

13. CALMAC Mfg.
Corp.2012©
University Example, U of Arizona
University of Arizona
Tucson, AZ
Production
22 Chillers – 34,350 tons
205 CALMAC IceBank™ tanks at two sites
30,750 ton hours of storage
Distribution
7 miles of underground pipes
5,500,000 gallons of water in the loop
11 Pumps – 3255 HP (0.095 HP / ton of refrigeration)
There are no pumps outside of the chiller plants
62,260 gpm circulation capacity (1.8 gpm / ton)
12 psi - total campus pressure drop
16 degrees – average yearly temperature rise of the
chilled water
Loads
176 buildings
11,750,000 square feet (342 tons / ft².)
Notable Results
Distributes the chilled water at an average of
0.683 KW/ton. Includes everything, chillers,
pumps, towers.
Thermal storage is saving $423,000/year
($2,063/tank/yr)

14. CALMAC Mfg.
Corp.2012©
Get Started with Pre-engineered Hybrid Storage Systems
You don’t have to start from scratch.
Air Cooled Hybrid Cooling with pre-selected
equipment combinations:
• A/C Chillers
• IceBank™ Tanks and Plate Frame HX’s
• Factory Assembled Smart Pumping Skid
• Pre-packaged controls
• Dashboards that document savings
Saves time and MONEY
• Design and Installation phase
• Commissioning phase
• Operation & Maintenance phase

15. CALMAC Mfg.
Corp.2012©
Jefferson County Community College StagingJefferson County Community College Running

16. Questions?
Thank You!
IceBank Energy Storage
Terry Andrews
CALMAC Mfg. Corp.
(714)585-6121
tandrews@calmac.com