A quick Review of SCE TOU-8 rate, 2-50 kv service, option b

A Quick Review ofSCE’s TOU-8 Rate

IceBank Energy Storage

Terry AndrewsCALMAC Manufacturing [email protected](714)585-6121

SCE’S TOU-8 RATE:

WHY IT IS A FANTASTIC RATE FOR ENERGY STORAGE

Energy Storage for a Cooler Future ™

CALMAC Mfg.Corp.2012©

Base Load

LightingFans

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Demand - $/kW

SCE’s TOU-8 Rate – Demand verses Energy Charges


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


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On Peak Demand – $23.74/kW Facilities Demand - $14.88/kWEffective Total Demand:

$38.62/kW

SCE’s TOU-8 Rate – Effective Demand Charges

Over $56,000 per monthIn 4 summer months


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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


Summer “Blended” Costs – Day vs. Night28 cents vs. 6 cents per kWh – 4X more during the day


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


Winter “Blended” Costs, Day vs. Night14 cents verses 7 cents per kWh – ½ price sale at night


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


Project Examples

Edwards AFBCA

Encinitas Civic CenterEncinitas, CA

Nordstrom Dept. StoreHawaii

Los PositasLivermore, CA


Project Examples

Irvine Presbyterian ChurchIrvine, CA

Los Angeles Community College,Los Angeles, CA

Chabot College Hayward ,CA

California State Lottery Sacramento, CA


University Example, U of Arizona

University of ArizonaTucson, AZ

Production22 Chillers – 34,350 tons205 CALMAC IceBank™ tanks at two sites

30,750 ton hours of storage

Distribution7 miles of underground pipes5,500,000 gallons of water in the loop11 Pumps – 3255 HP (0.095 HP / ton of refrigeration)There are no pumps outside of the chiller plants62,260 gpm circulation capacity (1.8 gpm / ton)12 psi - total campus pressure drop16 degrees – average yearly temperature rise of the chilled waterLoads

176 buildings11,750,000 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)


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


Jefferson County Community College StagingJefferson County Community College Running

$ 84,000 REBATE!......IF IN CA

Questions?

Thank You!

IceBank Energy StorageTerry AndrewsCALMAC Mfg. Corp.(714)[email protected]

A quick Review of SCE TOU-8 rate, 2-50 kv service, option b

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