sourcePSCo COLO. PUC No. 8 Electric, Schedule SG, the 1 October rates with the GRSA reset to 15.33% on Eleventh Revised Sheet 132 (Advice Letter 2038, proceeding C26-0654) effective 19 October 2026
verifiedTranscribed from the utility's filed sheetPSCo COLO. PUC No. 8 Electric, Schedule SG, the 1 October rates with the GRSA reset to 15.33% on Eleventh Revised Sheet 132 (Advice Letter 2038, proceeding C26-0654) effective 19 October 2026
verifiedEffective date on the sheet: 2026-10-19
verifiedReconciles to a total the utility published itselfEXACT, per unit, against Xcel's own Electric Rates Summary effective 19 October 2026: service and facility $105.76, distribution $11.15/kW, winter and summer G&T $19.45 and $26.63/kW, energy $0.03689/kWh. Encoded on 21 O
verifiedSource document checked daily for changes
excludedTaxes, franchise fees and local surchargesJurisdiction-specific, so they are deliberately not encoded. A bill will be higher than this figure by that amount.
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WHAT A 21,874 kWh MONTH COSTS: $2,928.59, on PSCo's own modelled Schedule SG customer (62 kW distribution, 22 kW summer and 38 kW winter generation and transmission). GRSA 15.33% of base charges, per-kW riders DSMCA $2.65, PCCA $1.25, TCA $0.71, WMA $2.30, TEPA $1.15 and GMAC $0.27, ECA $0.02589/kWh, EEAC $0.86/month.
BUILT FROM THE FILED RATE BOOK, NOT FROM PSCO'S CUSTOMER IMPACT STUDY, and until 1 October 2026 it was the other way round. Both of PSCo's 2026 studies print DSMCA $2.76 and WMA $0.67 per kW; the filed Sheets 140 and 148 and both of Xcel's own rate summaries say $2.65 and $2.30. The October study also omits the 29 August rate case entirely - no 14.12% GRSA, the old PCCA and TCA. The studies reproduce exactly from their own inputs, which proves the bill's structure, but their inputs are not the tariff.
FOUR DIFFERENT DEMAND QUANTITIES ON ONE BILL: 62 kW for distribution, 22 kW summer generation and transmission, 38 kW winter G&T, and 60 kW for every base-rate adjustment rider. No single metered demand produces all four. They are INPUTS here, because PSCo reports one customer's determinants without stating the rules that produce them.
PSCO ROUNDS ONCE, NOT PER LINE, and AEP Ohio and ComEd do the opposite. Summing a study's printed lines misses PSCo's own subtotal by a cent; keeping energy and ECA unrounded until the subtotal reproduces it.
THE GRSA IS A PERCENTAGE OF BASE CHARGES ONLY. Sheet 132 applies it to every class except Residential and Small Commercial, and not to Non-Base Rate Adjustments - so it grosses up the service, energy and demand charges and none of the riders.
THE PERCENTAGES ARE ON THE WHOLE SUBTOTAL, not on the base. CEPA, CEPR and RESA apply to base plus adjustments plus EEAC.
BUNDLED, UNLIKE OHIO AND ILLINOIS. Colorado is vertically integrated, so nothing on this bill is bypassable.
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Change history
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No changes detected since monitoring began. The source sheet is checked daily.