Rocky Mountain Power - Historical Rate Increases
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Effective DateDocket No.Company $ Change Initial RequestCommission $ Change Approved700kwh/month Residential Annual BillPercent ChangeReason
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March 10, 199290-035-06-22,986,260$586.44-3.67%PSC approved settlement of general rate case
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April 15, 199797-035-01$576.48-1.67%DPU/CCS proposed interim reduction
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March 1, 199997-035-01-85,364,352$505.32-11.33%DPU/CCS proposed rate decrease case
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January 10, 200098-2035-04$496.20-1.80%schedule 99, Scottish Power merger credit approved
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May 25, 200099-035-1067,000,00017,043,348$516.962.50%general rate case
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September 1, 200000-035-09$518.400.25%schedules 3 and 91added for low income lifeline program
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October 27, 200099-035-10$518.640.03%reconsideration of May 25th order
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February 2, 200101-035-01142,000,00070,000,000$568.449.40%gen rate case-interim increase for financial health
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April 10, 200198-2035-04$573.120.82%merger credit reduction
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November 2, 200101-035-01$568.06-0.88%rate design changes from general rate case
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April 1, 2002
01-035-23,29&36
$573.801.01%expiration of schedule 99, Scottish Power merger credit
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April 1, 200403-2035-02125,000,00065,033,916$604.376.98%PSC approved settlement of general rate case; schedule 193 Approved
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March 1, 200504-035-42111,022,48451,002,000$628.014.40%PSC approved settlement of general rate case
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November 23, 200505-035-T19$627.77-0.04%schedule 91 surcharge reduced by 17%
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December 2005-March 2006
04-035-21-1,799,390schedule 91 refund
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August 7, 200606-035-T05-9,955,424-9,955,424$622.51-0.85%schedule 193 DSM surcharge reduced
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November 27, 200606-035-T11577,099577,099$622.870.06%schedule 91 surcharge increased
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December 11, 200606-035-21194,100,000115,007,020$679.849.15%PSC approved settlement of general rate case with rate
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June 1, 200706-035-21$688.081.21%credit to June 1, 2007.
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August 13, 200807-035-93161,200,00036,164,195$706.772.72%general rate case
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October 13, 200807-035-933,207,810$708.380.23%general rate case order on reconsideration
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May 8, 200908-035-38160,600,00045,000,000$724.812.32%PSC approved settlement of general rate case and cost of service
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June 16, 200908-035-38$718.94-0.81%PSC approved settlement of rate design
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September 1, 200909-035-T0856,252,00034,654,000$736.642.46%schedule 193 DSM surcharge increased
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November 1, 200909-035-T15$737.840.16%schedule 91 low-income assistance surcharge increased
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February 18, 201009-035-2366,883,66532,414,860$754.052.20%general rate case
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June 2, 201009-035-23$752.09-0.26%general rate case cost of service and rate design change
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January 1, 2011
10-035-13,14,&89
88,410,00043,810,000$775.153.07%Major plant additions (sched. 40), deferred recovery of major plant additions (sched. 97), credit for renewable energy certificates(REC) (sched. 98)
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January 1, 201110-035-T14-13,500,000-13,500,000$768.88-0.81%schedule 193 DSM surcharge decreased to recover $57 million in annual program expenditures
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September 8, 201111-035-T08-15,000,000-15,000,000$758.41-1.42%Expiration of schedule 97, deferred recovery of major plant additions
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September 21, 201110-035-124232,000,000117,000,000$809.176.69%General Rate Increase; Expiration of MPA schedule 40; Continuation and slight increase of REC credit until May 31, 2012.
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October 4, 201111-035-T07466,000466,000$809.530.04%schedule 91 low-income assistance surcharge increased
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February 1, 201211-035-T14-21,000,000-8,400,000$805.64-0.48%schedule 193 DSM surcharge decrease
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June 1, 201212-035-T06-6,725,642-6,725,642$802.59-0.38%schedule 194 DSM refund
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June 1, 201212-035-68-4,028,910-4,028,910$821.282.33%termination of 10-035-124 schedule 98 $20 million renewable energy credit and approval of $4,028,910 credit
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June 1, 201212-035-6720,000,00020,000,000$830.531.13%schedule 94 deferred net power cost surcharge
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October 12, 201211-035-200172,300,000100,000,000$874.195.26%Step 1 general rate increase
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October 12, 201211-035-10450,000,00050,000,000$877.360.36%Solar incentive program: total of $50 million to be collected through rates over five years, 2013 through 2017.
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March 1, 201312-035-679,300,0007,800,000$879.380.23%Energy Balancing Account charge: $3.9 million annual increase for two years.
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March 1, 201313-035-T01-13,019,000-13,019,000$876.52-0.33%schedule 194 DSM refund
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June 1, 201313-035-33765,378765,378$876.640.01%Renewable Energy Credit Schedule 98 reduced from $4,028,910 to $3,263,532.
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September 1, 201311-035-20054,000,000$903.313.04%Step 2 general rate increase approved in Docket No. 11-035-200; effective date is conditional.
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September 15, 201313-035-1364,263,1644,263,164$909.750.71%Early termination of Schedule 194 DSM refund
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November 1, 201313-035-3217,400,00015,000,000$911.840.23%Energy Balancing Account charge: $7.5 million annual increase for two years.
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June 1, 201414-035-3017,000,0005,700,000$916.600.52%Renewable Energy Credit Schedule 98 adjustment to collect $17 million over three years for an annual surcharge of $5.7 million effective June 1, 2014.
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September 1, 201413-035-18476,300,00035,000,000$937.912.32%Step 1 general rate increase
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November 1, 201414-035-3128,300,00025,300,000$941.320.36%Energy Balancing Account charge: $13.2 million increase over 1 year.
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January 1, 201514-035-T12-820,000-820,000$940.60-0.08%Schedule 91 low-income assistance surcharge decreased from $0.26 to $0.20
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February 1, 201514-035-T146,356,0008,489,000$945.140.48%Schedule 193 DSM surcharge increase
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June 1, 201515-035-272,800,0002,800,000$946.870.18%Schedule 98 Renewable Energy Credit Adjustment of $5.6 million increase approved in two annual $2.8 million installments.
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September 1, 201515-035-T1219,200,00019,200,000$955.760.94%Step 2 general rate increase approved in Docket No. 13-035-184.
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November 1, 201515-035-03-14,400,000-15,500,000$949.59-0.65%Energy Balancing Account charge: $15.5 million decrease over 1 year.
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January 1, 201615-035-T137,200,0007,200,000$952.940.35%Schedule 193 DSM surcharge increase
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June 1, 201616-035-10-1,351,000-1,351,000$952.17-0.08%Schedule 98 Renewable Energy Credit Adjustment revenue decrease of $1.351 million.
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