414 Nicollet Mall Minneapolis, MN 55401

PUBLIC DOCUMENT CONTAINS TRADE SECRET DATA February 12, 2016 Daniel P. Wolf Executive Secretary Minnesota Public Utilities Commission 121 7th Place East, Suite 350 St. Paul, MN 55101 RE:

―VIA ELECTRONIC FILING―

COMPLIANCE FILING SAVER’S SWITCH DOCKET NOS. E002/M-01-46 & E002/CI-01-1024

Dear Mr. Wolf: Enclosed for filing is the 2015 Saver’s Switch® Annual Report of Northern States Power Company. This Compliance Filing reports on data regarding customer participation, complaints, usage, control hours, control reasons, and demand or MW savings. Schedule 2 of this Compliance Filing contains information that Xcel Energy considers Trade Secret Data. Under Minnesota Stat. §13.37, trade secret information is defined in part as government data, including a compilation that 1) was supplied by the affected individual or organization, 2) is subject of efforts by the individual or organization that are reasonable under the circumstances to maintain its secrecy, and 3) derives independent economic value, actual or potential, from not being generally known to, and not being readily ascertainable by proper means by, other persons who can obtain economic value from its disclosure or use. The avoided costs information designated as trade secret and contained in Schedule 2 meets this definition for the following reasons:

1. Xcel Energy, the affected organization, is supplying the information. Xcel Energy makes extensive efforts to maintain the secrecy of this information; 2. The information is not available outside of the Company except to regulatory agencies under the confidentiality provisions of state or federal law; and 3. The avoided costs information contained in Schedule 2 has economic value to Xcel Energy, its customers, suppliers, and competitors. Providing the avoided costs to serve our customers during the 2015 control day would give competitors information that they could use to extract higher prices in the wholesale energy market. This result would directly harm Xcel Energy by making its delivered energy costs less competitive. For this reason, the data designated in Schedule 2 of this compliance report for Xcel Energy’s electric utility must be treated as Trade Secret information. Copies of this filing have been served on all parties on the attached service list. Please call Jessica Peterson at 612-330-6850 if you have any questions regarding this filing. Sincerely, /s/ SHAWN WHITE MANAGER DSM REGULATORY STRATEGY & PLANNING Enclosures c: Service List

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STATE OF MINNESOTA BEFORE THE MINNESOTA PUBLIC UTILITIES COMMISSION Beverly Jones Heydinger Nancy Lange Dan Lipschultz Matthew Schuerger John Tuma

Chair Commissioner Commissioner Commissioner Commissioner

IN THE MATTER OF THE MODIFICATION OF THE CONTROLLED AIR CONDITIONING RIDERS

DOCKET NO. E002/M-01-46

IN THE MATTER OF THE INVESTIGATION INTO USING RATE DESIGN TO ACHIEVE DEMAND-SIDE MANAGEMENT GOALS

DOCKET NO. E002/CI-01-1024 COMPLIANCE FILING

OVERVIEW Northern States Power Company, doing business as Xcel Energy, submits to the Minnesota Public Utilities Commission this 2015 Annual Saver’s Switch® Report in compliance with Commission Orders in the Company’s Controlled Air Conditioning Rider (Saver’s Switch) above-referenced dockets. Our Saver’s Switch program dates back to 1990, when the Commission approved the Company’s two experimental tariffs as part of a pilot load control program. Since this time, the Saver’s Switch program has become a workhorse in the Company’s load management stable – having expanded to include more than 400,000 business and residential participants that provide more than 300 MW of available load relief to our electric system in Minnesota alone. Currently, the program is estimated to serve more than 60 percent of eligible residential customers with direct load control. The success of this program is in part due to the ability for customers to have a direct impact to the energy grid. Under the program, customers authorize Xcel Energy to control their central air-

1

conditioning units during periods of high electrical demand, in exchange for a discount on their bill during summer months.1 In addition, customers are loyal to the Saver’s Switch program. For instance, the Residential Saver’s Switch program has had an attrition rate of only 0.15 percent 2. The clear implication is that customers participate in the program for a significant, if not entire, portion of the switch lifetime. Low attrition also shows customer commitment to peak reductions during high system load. The remaining balance of our 2015 Annual report provides the following program information: • Customer participation, • Complaints, • Program usage, • Control hours, • Control reasons (peak or economic), and • Demand (MW) savings information. ANNUAL REPORT A.

Background

The Saver’s Switch program is a direct load-control program for Residential, Small Business, and Commercial and Industrial customers. Residential participants receive a 15 percent discount on their electric energy charges from June through September, and business customers receive a $5.00 per air-conditioning ton, per month, bill credit from June through September. Residential air-conditioning participants also have the option of enrolling a qualifying electric water heater for an additional two percent discount on electric energy charges, year round. The program itself has also been part of the Company’s Conservation Improvement Program (CIP) since 1992. The Company has accounted for demand and energy savings consistent with Department approval since this time. We note that the savings and demand achieved through CIP are not accounted for within this annual report, but can rather be found in our annual CIP Status The Company also offers electric water heating control to residential customers with a controlled central air conditioner or heat pump. Customers served with an Energy Controlled Service (NonDemand Metered) rate schedule are not eligible. 2 0.15 percent attrition rates are based on a five year average from 2011 -2015. 1

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Reports.3 The annual report is intended to provide specific program detail as required by the Commission for the Controlled Air Conditioning Riders4 which can be found in the Company’s Electric Rate Book Section 5, Sheets 97-99.1. Therefore, reporting details between these two requirements may differ slightly based on specific requirements of these dockets. We also note that the company is currently conducting a pilot test of using Wi-Fi enabled ‘smart’ thermostats for controlling load of customers participating in a load management program. This approach, if successful, may provide an alternative to Saver’s Switch. Participation in the two programs would be mutually exclusive. B.

Required Information

Below, we discuss the requirements of the Commission’s May 14, 2001 and November 1, 2002 Orders that form the basis for this report.5 We provide the detailed information as Schedule 1 to this filing. 1.

May 14, 2001 Order

We provide the following required information as Pages 1-3 of Schedule 1 to this filing: • • • • • •

Total number of participants; Number of new participants; Number of new cancellations; Saver’s Switch complaints to the Commission; Saver’s Switch complaints to the Company; List of individual control days and the reasons for instituting control on each day; • Total yearly control hours; and • Number of system emergencies.

The Company’s most recent CIP Status Report was filed on April 1, 2014 in Docket No. CIP12.447.07. 4 Xcel Energy’s rate riders include the Residential Controlled Air Conditioning and Water Heating Rider as well as the Commercial and Industrial Controlled Air Conditioning and Water Heating Rider. 5 Docket Number E002/M-01-46 issued on May 14, 2001, In the Matter of the Modification of the Controlled Air Conditioning Riders & Docket Number E002/CI-01-1024 issued on November 1, 2002, In the Matter of the Investigation into Using Rate Design to Achieve Demand-Side Management Goals. 3

3

Schedule 1 contains the above data for the years 1997 through 2015. Page 1 contains the Residential Program details; Page 2 contains the Business Program details; and Page 3 contains the 2015 Control History and Complaint Statistics. In summary, we added 3,573 new customers, conducted 18,727 maintenance retrofits, and had 659 switch deactivations. At the end of 2015, our Saver’s Switch program had a total of 389,479 residential and 16,142 business participants in Minnesota. 2.

November 1, 2002 Order

We provide the following required information as Pages 1-3 of Schedule 1: • The number of customers and megawatts (MW) signed up for the program; • The number of customers (and MW) opting out of the program; We provide the following required information as Schedule 2, which contains the detailed data during each hour of the interruption: • An estimate of the total MW interrupted during each hour of interruption; and • An estimate of Xcel Energy’s avoided cost during each hour of interruption. As shown in the attached Schedules 1 & 2, we conducted our first in-field test of the Saver’s Switch program in 2015. As such, the Company controlled all customers for an increment of two hours to verify system control. This was done in two separate events where half the participant population was controlled per event. The test is the only control event reported during this 2015 period. We confirm the Saver’s Switch program was available for both peak load management and economic dispatch, even though the Company did not find need to control outside the test event. C.

Economic Dispatch

In compliance with the November 1 Order, we made our Saver’s Switch program available for both peak reduction and economic dispatch for the past 12 seasons (2003 to 2015). Saver’s Switch for economic dispatch began as a pilot program, because we initially had concerns that economic triggers would be too frequent, causing customers to leave the program and result in an overall reduction in direct load control. 4

However, due to the dependency of each of these dispatch protocols on the weather (peak dispatch used during hotter times, economic dispatch used during cooler times), we rarely face a choice between our peak and economic dispatch protocols. We believe that we benefit from having both economic and peak reduction trigger points available. In 2016, we will continue to use criteria established in the Tier 1 Energy Controlled Service Rider for our economic dispatch trigger control. The Tier 1 Energy Controlled Service Rider is used because of its current use to guide control activities for water heaters within the Saver’s Switch program, and its likely correlation with higher market prices for electricity. We call on Tier 1 Energy Controlled Service Rider customers whenever the production cost is in excess of $70 per MWh. Further, the Company is reviewing additional use of economic dispatch. Saver’s Switch is a candidate for geo-targeting load control to specific trouble areas in the electric system. Currently, the Company is testing this ability in our Colorado Service territory. As further results are collected in these tests, we will begin to determine if such efforts are warranted in Minnesota as well. D.

Program Results

In 2015, the Saver’s Switch program saw a slight increase in residential participation while business participation was flat. While the overall population did not change significantly, a large number of older switches were replaced with new units contributing to the robustness of the program. 1.

Program Use

Outside the Saver’s Switch testing event, we had no additional control events in 2015. Our total 3,573 new additions in 2015 included 3,211 residential and 362 commercial participants. We installed a total of 3,281 and 916 switches on customer premises, respectively. Further, 56 new residential participants enrolled a qualifying water heater in addition to their air conditioner. During the year we also conducted 16,746 residential and 1,981 commercial maintenance replacements of units found to be not working or needing replacement.

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2.

Complaints

In 2015, there were no Commission complaints recorded. Pages 1 and 3 of Schedule 1 provide detail regarding the numbers of Commission complaints for the last several years, as well as other inquiries regarding the program that we track as complaints, as they inform our program efforts. 3.

System Management

The Company utilizes a process we call Virtual Visit to test the condition of installed switches in the residential Saver’s Switch program, using our automated meter reading system. Virtual Visit is a part of our Demand Side Management (DSM) Saver’s Switch Maintenance program. As switches age beyond their estimated useful life (15 years), it is expected that some of those switches may fail. The Saver’s Switch Maintenance program is designed to identify those nonworking switches so they can be replaced. In the Virtual Visit process, we turn off customer air conditioners while we measure electric consumption before, during, and after the test. If customer consumption indicates that the air conditioner is running and we do not measure a consumption decline during the test, we can, in certain cases, conclude that the switch is not appropriately responding. Our annual goal is to test our entire residential switch population. However, in order to do so, the weather must be warm enough for participants to be using their central air conditioners, but not so warm that we need to cycle the units. We also prefer not to conduct Virtual Visit tests on weekends. The testing itself is done in segments of 30,000-40,000 customers at a time, as weather permits. By testing in smaller segments rather than the whole population, we can better manage customer calls and satisfaction. In 2015, we conducted Virtual Visits on about a quarter of the residential switch population, in three different tests, identifying about 13,000 switches to be replaced. The majority of those switches will be replaced in 2016. As mentioned in the 2013-2015 CIP Triennial and 2016 Extension Plans 6, we anticipate continuing to conduct Virtual Visits. We may also replace some of the very early vintage switches dating back to 1990-1994.

6

Docket No. E,G002/CIP-12-447

6

Virtual Visits allow us to test the conditions of installed switches. However, these events do not allow for a full review of the load reduction per switch like an actual control event would. The Company, therefore, conducted one control testing event in 2015 as a readiness exercise. Given low program use over the past several years, we wanted to verify the availability of load reduction during a control event. Approximately 303,000 of our 437,000 deployed switches are now equipped with adaptive algorithms. All new residential and business participants, as well as all switches replaced for maintenance purposes, received the adaptive algorithm switch in 2015. These adaptive switches cycle customer air conditioner units off and on based on usage, aimed at achieving a 50 percent reduction in load compared to the traditional switches, which use a 50 percent time-based cycling strategy running 15 minutes on / 15 minutes off. The adaptive switches increase overall kW reductions by minimizing free-ridership by “smartly” determining how often an air conditioner runs normally and cycling at 50 percent time. 4.

Program Attrition

Participant attrition has historically been quite low. As detailed on Page 1 of Schedule 1, in 2014, Saver’s Switch had 515 residential cancellations, or a fraction of one percent of total residential participants. This continues the trend of extremely low attrition rates recorded over the past decade. As Page 2 of Schedule 1 illustrates, there were 144 business cancellations; this continues a flat trend for this participant group. We note that 144 is the count of deactivated or removed switches, not the number of customers. The number of customers leaving the program is smaller as the average business participant has approximately three switches. CONCLUSION Our Saver’s Switch program has been a customer success for over a decade. While control events have been low over the past several years, the Company continues to depend upon these resources in case of an emergency and for system planning purposes. Further, the Company has taken active measures, such as testing, to verify the availability of load reduction by our switches. Xcel Energy respectfully requests that the Commission accept this annual Saver’s Switch compliance report. We believe our operation of the Saver’s Switch Program for both peak and economic reasons provides overall value to the system, as well as all of our customers.

7

Dated: February 12, 2015 Northern States Power Company

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Docket Nos. E002/M-01-46 & E002/CI-01-1024 Schedule 1 Page 1 of 3

Xcel Energy's Compliance Saver's Switch Program Statistics Residential Saver's Switch Statistics for 1997-2015 as of Year-End Total # of MW of Number of New Number of Saver's Switch Potential Saver's Switch Maintenance Year Customers Load Relief* Customers Switches Installed 2015 389,479 246 3,211 2014 387,429 241 10,980 2013 376,858 229 3,209 2012 375,064 220 13,941 2011 366,428 291 19,916 2010 341,628 387 16,304 2009 325,503 366 12,166 2008 314,291 349 12,449 2007 301,407 325 21,740 2006 282,396 317 13,413 2005 270,384 297 10,127 2004 261,322 285 21,641 2003 240,125 256 3,473 2002 244,954 261 15,076 2001 232,481 16,405 2000 219,031 16,212 1999 202,819 18,602 1998 184,217 20,625 1997 163,592 20,051 Totals 269,541 Average (Total Program) 14,186 Average (For Any Individual Saver's Switch Customer) 5 * kW calculations are based on most recently available load research

16,746 8,193 18,093 5,135 8 4,249 12,445 11,996 6,915 14,543 2,903 12,127 14,588

127,941 9,842

MW of Load Relief Leaving the Program*

Number of Saver's Switch Cancellations

0.25 0.22 0.30 0.33 0.56 0.52 0.73 0.58 1.92 1.92 1.60 0.47 1.41

515 470 616 681 642 485 685 540 1,804 1,801 1,498 444 1,321 2,603 2,955 507 3,569 1,673 649 23,458 1,235

Cancellations Saver's Switch as a Percent Complaints to of the Total MPUC SS Customers 0.13% 0 0.12% 0 0.16% 1 0.18% 2 0.18% 3 0.14% 0 0.21% 5 0.17% 1 0.60% 0 0 0.64% 0.55% 1 0.17% 1 0.55% 1 1.06% 1 1.27% 1 0.23% 1 1.76% 12 0.91% 6 0.40% 6 42 0.50% 2.2

Control Days (A/C) 1

Control Days (W/H) 2

2 0 0 0 1 1 0 0 10 6 9 3 11 9 16 5 12 6 6 97 5.1

0 0 0 1 1 0 2 5 16 5 11 10 20 11 20 15 12 11 10 150 7.9

Total Yearly Control Hours (A/C) 3 4.00 0.00 0.00 0.00 3.00 4.00 0.00 0.00 49.75 38.25 57.00 18.00 48.00 53.40 93.50 27.50 77.75 49.00 38.00 561 29.5

3.6

7.4

19.9

Total Yearly Control Hours (W/H) 4 0.00 0.00 0.00 4.00 3.00 0.00 10.00 34.00 94.25 29.00 67.00 66.00 137.50 71.00 115.50 92.00 77.75 70.00 58.00 929 48.9 46.1

Number of System Emergencies 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0.05

Docket Nos. E002/M-01-46 & E002/CI-01-1024 Schedule 1 Page 2 of 3

Xcel Energy's Compliance Saver's Switch Program Statistics Saver's Switch for Business Statistics for 1997-2015 as of Year-End Total # of MW of Number of New Number of Saver's Switch Potential Saver's Switch Maintenance Year Customers Load Relief* Customers Switches Installed 2015 16,142 53 362 1,981 2014 16,144 51 437 1,389 2013 15,917 45 564 417 2012 15,407 40 669 1,656 2011 16,504 45 985 0 2010 14,024 105 878 14 2009 13,397 99 499 1127 2008 13,070 91 571 1607 2007 12,578 87 693 389 2006 12,099 81 724 1160 2005 11,189 71 1,082 462 2004 10,355 63 154 509 2003 10,308 61 849 0 2002 9,583 54 910 2001 8,673 1,277 2000 7,396 1,519 1999 5,877 1,313 1998 4,564 1,854 1997 2,710 1,534 Totals 16,874 10,711 Average (Total Program) 888 Average (For Any Individual Saver's Switch Customer) 5 * kW calculations are based on most recently available load research 1 2 3 4 5

MW of Load Relief Leaving the Program*

Number of New Saver's Switch Cancellations

0.11 0.08 0.25 0.24 0.39 0.60 0.11 0.50 1.70 0.63 1.65 0.84 1.29 0.76

144 92 263 191 278 163 41 149 222 106 183 107 124 136 163 20 58 116 150 2,706 142

Cancellations Saver's Switch as a Percent Complaints to of the Total MPUC SS Customers 0.89% 0 0.57% 0 1.65% 0 1.24% 0 1.68% 0 1.16% 0 0.31% 0 1.14% 0 1.76% 0 0.88% 0 1.64% 0 1.03% 0 1.20% 0 1.42% 0 1.88% 0 0.27% 0 0.99% 0 2.54% 0 5.54% 0 0 1.5% 0

Summer Total Number of Control Yearly System Days 1 Control Emergencies Hours 3 2 4.00 0 0 0.00 0 0 0.00 0 0 0.00 0 1 3.00 0 1 4.00 0 0 0.00 0 0 0.00 0 10 49.75 0 6 38.25 0 9 57.00 0 3 18.00 0 11 48.00 0 9 53.40 0 16 93.50 0 5 27.50 0 12 77.75 0 6 49.00 1 6 38.00 0 97 561 1 5.1 29.5 0.05 3.6 19.9

Represents control days that occurred during summer - central air conditioners. Represents control days that occurred during summer and winter - electric water heaters. Represents the total number of control hours for summer controls - central air conditioners. Represents the total number of control hours for winter and summer controls - electric water heaters. Controlled separately from air conditioners. The Saver's Switch Program is divided into two groups. On some control days, just one or the other group is controlled. Therefore, the average for any individual Saver's Switch customer is typically less than the average for the total Saver's Switch Program. This includes the Economic dispatch control days.

Docket Nos. E002/M-01-46 & E002/CI-01-1024 Schedule 1 Page 3 of 3

Xcel Energy's Compliance Saver's Switch Program Statistics

Type of Control Date

Residential and Business Complaint Statistics Complaint/Problem Type Installation Delays/Problems Indoor Air Temperature Too Many Control Hours Miscellaneous Switch problems/failures Customer Credits Disconnection Delays Repair Delays/Problems Incorrectly identified as Saver's Switch complaints Total (Excluding Incorrect Complaints)

Emergency

Peaking

Control Reason

Economic

7/23/15

x

System test

7/28/15

x

System test

2004 2005 Incidents Incidents* 2008 Incidents Incidents * * Incidents 13 19 77 59 34 3 7 17 5 1 0 1 3 1 0 2 1 9 43 18 5 7 50 35 32 70 94 67 13 36 4 19 59 19 2 7 4 1 1 23

35

258

332

175

2009 2010 2011 Incidents Incidents Incidents 38 46 47 4 8 2 0 2 0 31 30 33 15 34 21 59 66 68 3 2 14 7 10 4 6 6 13 157

* Xcel Energy implemented a more rigorous complaint tracking tool in July 2006 that better captures and documents the types of complaints. We believe that the increase in the total number of complaints in 2006 over 2005 is the result of better documentation rather than an actual increase in the number of complaints. ** The increase in 2007 may be attributed to a full year of having the complaint tool to track as opposed to a partial year as in 2006.

198

189

2012 Incidents 30 1 0 22 17 57 6 8 24

2013 Incidents 18 0 1 12 19 17 2 2 2

141

71

2014 2015 Incidents Incidents 53 5 0 1 0 0 11 12 9 23 33 12 4 9 8 14 21 1 118

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PUBLIC DOCUMENT CONTAINS TRADE SECRET DATA

Docket Nos. E002/M-01-46 & E002/CI-01-1024 Schedule 2 Page 1 of 3

Xcel Energy Saver's Switch Program Statistics - Compliance Filing

DOCKET NOS. E002/M-01-46/E002/CI-01-1024 PUBLIC DOCUMENT - TRADE SECRET DATA HAS BEEN EXCISED Saver's Switch Interruption History: 2015 Date

December 31, 2015

SUMMARY

Hour Ending

Estimated Total MW Interrupted

1:00 AM 2:00 AM 3:00 AM 4:00 AM 5:00 AM 6:00 AM 7:00 AM 8:00 AM 9:00 AM 10:00 AM 11:00 AM 12:00 PM 1:00 PM 2:00 PM 3:00 PM 4:00 PM 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 10:00 PM 11:00 PM 12:00 AM TOTAL

Schedule 2 Page 1 of 3

Residential AC MWh

Res. WH MWh

Business AC MWh

Total MWh

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 126 121 0 0 0 0 0 0 0 247

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 36 36 0 0 0 0 0 0 0 72

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 162 157 0 0 0 0 0 0 0 319

Estimated Economic Peaking Avoided Costs * Avoided Costs Avoided Costs $/MWh Total $ Total $ [TRADE SECRET DATA BEGINS

Test Avoided Costs Total $

Total Avoided Costs Total $

TRADE SECRET DATA ENDS]

PUBLIC DOCUMENT CONTAINS TRADE SECRET DATA

Docket Nos. E002/M-01-46 & E002/CI-01-1024 Schedule 2 Page 2 of 3

Xcel Energy's Compliance Saver's Switch Program Statistics

DOCKET NOS. E002/M-01-46/E002/CI-01-1024 PUBLIC DOCUMENT - TRADE SECRET DATA HAS BEEN EXCISED

Schedule 2 Page 2 of 3

Hour Ending

Saver's Switch Interruption History

Date

July 23, 2015

Control Type

Residential AC MW Test

1:00 AM 2:00 AM 3:00 AM 4:00 AM 5:00 AM 6:00 AM 7:00 AM 8:00 AM 9:00 AM 10:00 AM 11:00 AM 12:00 PM 1:00 PM 2:00 PM 3:00 PM 4:00 PM 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 10:00 PM 11:00 PM 12:00 AM Total

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 67 61 0 0 0 0 0 0 0 128

Estimated Total MW Interrupted Residential WH Business AC MW MW N/A Test 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 20 0 0 0 0 0 0 0 40

Total MW

Estimated Economic Peaking Avoided Avoided Costs Avoided Costs Costs $/MWh Total $ Total $ [TRADE SECRET DATA BEGINS

Test Avoided Costs Total $

Total Avoided Costs Total $

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 87 80 0 0 0 0 0 0 0 168 TRADE SECRET DATA ENDS]

PUBLIC DOCUMENT CONTAINS TRADE SECRET DATA

Docket Nos. E002/M-01-46 & E002/CI-01-1024 Schedule 2 Page 3 of 3

Xcel Energy's Compliance Saver's Switch Program Statistics

DOCKET NOS. E002/M-01-46/E002/CI-01-1024 PUBLIC DOCUMENT - TRADE SECRET DATA HAS BEEN EXCISED

Schedule 2 Page 3 of 3

Hour Ending

Saver's Switch Interruption History

Date

July 28, 2015

Control Type

Residential AC MW Test

1:00 AM 2:00 AM 3:00 AM 4:00 AM 5:00 AM 6:00 AM 7:00 AM 8:00 AM 9:00 AM 10:00 AM 11:00 AM 12:00 PM 1:00 PM 2:00 PM 3:00 PM 4:00 PM 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 10:00 PM 11:00 PM 12:00 AM Total

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 59 61 0 0 0 0 0 0 0 119

Estimated Total MW Interrupted Residential WH Business AC MW MW N/A Test 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 16 0 0 0 0 0 0 0 32

Total MW

Estimated Economic Peaking Avoided Avoided Costs Avoided Costs Costs $/MWh Total $ Total $ [TRADE SECRET DATA BEGINS

Test Avoided Costs Total $

Total Avoided Costs Total $

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 75 77 0 0 0 0 0 0 0 151 TRADE SECRET DATA ENDS]

CERTIFICATE OF SERVICE I, Jim Erickson, hereby certify that I have this day served copies of the foregoing document on the attached list of persons. xx

by depositing a true and correct copy thereof, properly enveloped with postage paid in the United States mail at Minneapolis, Minnesota; or

xx

by electronic filing.

Docket Nos.: E002/M-01-46 & E002/CI-01-1024 Dated this 12th day of February.

/s/ _______________________________ Jim Erickson

First Name

Last Name

Email

Company Name

Address

Delivery Method

View Trade Secret

Service List Name

Christopher

Anderson

[email protected]

Minnesota Power

30 W Superior St

Electronic Service

No

OFF_SL_1-1024_1

Duluth, MN 558022191 Julia

Anderson

[email protected] Office of the Attorney n.us General-DOC

1800 BRM Tower 445 Minnesota St St. Paul, MN 551012134

Electronic Service

Yes

OFF_SL_1-1024_1

Janet

Anderson

[email protected]

1799 Sargent

Electronic Service

No

OFF_SL_1-1024_1

Electronic Service

No

OFF_SL_1-1024_1

Electronic Service

Yes

OFF_SL_1-1024_1

Electronic Service

No

OFF_SL_1-1024_1

Paper Service

No

OFF_SL_1-1024_1

-

St. Paul, MN 55105 George

Crocker

[email protected]

North American Water Office

PO Box 174 Lake Elmo, MN 55042

Sharon

Ferguson

[email protected] Department of Commerce .us

85 7th Place E Ste 500 Saint Paul, MN 551012198

Jessy

Hennesy

jessy.hennesy@avantener gy.com

Avant Energy

220 S. Sixth St. Ste 1300 Minneapolis, Minnesota 55402

Chris

King

American Energy Institute

842 Oxford Street Berkeley, CA 94707

John

Lindell

[email protected] Office of the Attorney General-RUD

1400 BRM Tower 445 Minnesota St St. Paul, MN 551012130

Electronic Service

Yes

OFF_SL_1-1024_1

Pam

Marshall

[email protected]

823 7th St E

Electronic Service

No

OFF_SL_1-1024_1

Paper Service

No

OFF_SL_1-1024_1

Electronic Service

No

OFF_SL_1-1024_1

Energy CENTS Coalition

St. Paul, MN 55106 Kevin

Mulloy

SchlumbergerSema, Inc.

2179 Highway 36 East Roseville, MN 55113

Eric

Swanson

[email protected]

Winthrop Weinstine

225 S 6th St Ste 3500 Capella Tower Minneapolis, MN 554024629

First Name

Last Name

Bill

Taylor

SaGonna

Thompson

Email

Regulatory.records@xcele nergy.com

Company Name

Address

Delivery Method

View Trade Secret

Service List Name

General Mills, Inc.

JFB E-350 9000 Plymouth Avenue North Minneapolis, MN 55427

Paper Service

No

OFF_SL_1-1024_1

Xcel Energy

414 Nicollet Mall FL 7

Electronic Service

No

OFF_SL_1-1024_1

Electronic Service

Yes

OFF_SL_1-1024_1

Minneapolis, MN 554011993 Daniel P

Wolf

[email protected]

Public Utilities Commission 121 7th Place East Suite 350 St. Paul, MN 551012147

2

First Name

Last Name

Email

Address

Delivery Method

View Trade Secret

Service List Name

Julia

Anderson

[email protected] Office of the Attorney n.us General-DOC

Company Name

1800 BRM Tower 445 Minnesota St St. Paul, MN 551012134

Electronic Service

No

OFF_SL_1-46_1

Sharon

Ferguson

[email protected] Department of Commerce .us

85 7th Place E Ste 500

Electronic Service

Yes

OFF_SL_1-46_1

Saint Paul, MN 551012198 John

Lindell

[email protected] Office of the Attorney General-RUD

1400 BRM Tower 445 Minnesota St St. Paul, MN 551012130

Electronic Service

No

OFF_SL_1-46_1

SaGonna

Thompson

Regulatory.records@xcele nergy.com

414 Nicollet Mall FL 7

Electronic Service

No

OFF_SL_1-46_1

Electronic Service

Yes

OFF_SL_1-46_1

Xcel Energy

Minneapolis, MN 554011993 Daniel P

Wolf

[email protected]

Public Utilities Commission 121 7th Place East Suite 350 St. Paul, MN 551012147