Public Service Company of Colorado (Xcel Energy) Rate Selection Guide
Public Service Company of Colorado, an Xcel Energy operating company, serves roughly 1.59 million electric and 1.25 million gas customers across Colorado as a fully regulated utility. It stands out among large IOUs for supporting Green Button Connect My Data (ESPI/OAuth 2.0) and the InfoWise 15-minute interval data service for C&I customers. Third-party access runs through Green Button, My Account delegation, the CEUD authorization form, EDI, and a developer portal.
Public Service Company of Colorado (Xcel Energy) Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| Schedule C | Commercial (small) | S&F ~$5.47/mo; energy ~$0.055-$0.099/kWh seasonal | Small businesses under ~25 kW |
| Schedule SG | Commercial/Industrial (secondary) | S&F ~$88.07/mo; demand ~$9.36/kW dist + $9-15/kW G&T seasonal; energy ~$0.0085/kWh | Mid/large secondary-voltage C&I with steady load |
| Schedule SGL | Commercial/Industrial (secondary) | S&F ~$88.07/mo; dist demand ~$9.36/kW; energy ~$0.118-$0.168/kWh seasonal | Low-load-factor secondary-voltage customers |
| Schedule PG | Commercial/Industrial (primary) | Primary-voltage demand + energy (lower delivery cost than SG) | Larger customers metered at primary voltage |
| Schedule TG | Industrial (transmission) | Transmission-voltage demand + energy (lowest delivery cost) | Largest industrial loads at transmission voltage |
| CPP / TOU | Commercial/Industrial TOU | On-peak/shoulder/off-peak energy (summer on-peak ~$0.16/kWh) + demand | Load-flexible customers able to shift off peak |
| C&I Gas (CG/IG/TFS/TFL/TI) | Gas | Service charge + monthly Gas Cost Adjustment commodity; transportation unbundled | Commercial/industrial gas users; large users can transport own supply |
Market Overview
Colorado is a fully regulated market with no retail electric choice. Public Service Company of Colorado is the monopoly electric and gas provider in its territory, regulated by the Colorado PUC. Rates and tariffs are set through PUC proceedings.
Need to pull your actual usage data to compare rates? See the Public Service Company of Colorado (Xcel Energy) Data Access Guide →
Current Rate Schedules
Public Service Company of Colorado (PSCo), an Xcel Energy operating company, is a fully regulated electric and gas utility serving Colorado under tariffs approved by the Colorado Public Utilities Commission (CPUC) — electric tariff P.U.C. No. 8 and gas tariff P.U.C. No. 6. Commercial and industrial electric customers are segmented by voltage and load: small Commercial (Schedule C), Secondary General (SG) and its low-load-factor variant (SGL) at secondary voltage, Primary General (PG) at primary voltage, and Transmission General (TG) at transmission voltage, plus critical-peak-pricing and time-of-use options (SG-CPP, PG-CPP, TG-CPP, STOU). Larger schedules feature seasonal generation/transmission demand charges that are much higher in summer (Jun-Sep) than winter (Oct-May). Commercial and industrial gas service is available as Commercial Gas (CG), Interruptible Industrial Gas (IG), and firm/interruptible transportation (TFS, TFL, TI).
Effective: May 1, 2024 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Schedule C - Commercial Service | Commercial (small) | Small commercial customers with demand generally less than 25 kW at secondary voltage. | Service & facility charge plus tiered seasonal energy charge; no major demand charge at this small-customer level. Summer (Jun-Sep) energy higher than winter (Oct-May). | Service & facility charge ~$5.47/mo; energy summer first 500 kWh ~$0.05461/kWh, over 500 kWh ~$0.09902/kWh; winter ~$0.05461/kWh (effective 2024).+ None at the small-commercial level (energy-only). |
| Schedule SG - Secondary General Service | Commercial/Industrial (secondary voltage) | Customers taking power at secondary voltage above the small-commercial threshold; the core C&I secondary schedule. | Service & facility charge + production/load meter charges + a distribution demand charge plus a seasonal generation & transmission (G&T) demand charge (summer far higher than winter) + a small energy charge. Riders (DSM, fuel, transmission cost adjustment, etc.) apply. | Service & facility ~$88.07/mo; production/load meter ~$22.05 each; energy ~$0.00853/kWh (2024).+ Distribution demand ~$9.36/kW; G&T demand summer ~$15.14-15.15/kW, winter ~$9.09-9.11/kW (effective 2024). |
| Schedule SGL - Secondary General Low-Load Factor | Commercial/Industrial (secondary voltage) | Secondary-voltage customers with low load factor for whom an energy-weighted design is more economic than standard SG. | Service & facility charge + production meter charge + distribution demand charge, with the generation/transmission cost recovered through higher seasonal energy charges rather than a G&T demand charge. | Service & facility ~$88.07/mo; energy summer ~$0.16804/kWh, winter ~$0.11763/kWh (2024).+ Distribution demand ~$9.36/kW (no separate G&T demand charge; recovered in energy). |
| Schedule PG - Primary General Service | Commercial/Industrial (primary voltage) | Larger C&I customers taking service at primary distribution voltage. | Same demand/energy structure as SG with primary-voltage discounts (lower distribution demand component and rider rates reflecting reduced delivery cost). Seasonal G&T demand charges apply. | Specific $ values per the PSCo electric rate book; PG demand-side-management rider ~$1.58/kW-mo vs SG ~$1.7+/kW-mo indicates the primary-voltage discount.+ Distribution + seasonal G&T demand charges at primary-voltage rates (lower than SG); see rate book. |
| Schedule TG - Transmission General Service | Industrial (transmission voltage) | The largest industrial customers taking service at transmission voltage. | Service & facility + demand + energy with the lowest delivery-cost components of the general-service schedules, reflecting transmission-level service. Seasonal G&T demand charges apply. | Specific $ values per the PSCo electric rate book; TG demand-side-management rider ~$1.39/kW-mo (lowest of the general-service classes).+ Distribution + seasonal G&T demand charges at transmission-voltage rates (lowest of SG/PG/TG); see rate book. |
| Critical Peak Pricing / TOU (SG-CPP, PG-CPP, TG-CPP, STOU) | Commercial/Industrial TOU | C&I customers (generally at least 25 kW with sufficient load factor) electing critical-peak-pricing or time-of-use service across secondary, primary, and transmission classes. | Time-differentiated energy with on-peak, shoulder, and off-peak periods and (for CPP) critical-peak event pricing; demand component retained. Summer on-peak energy substantially higher than off-peak. | Illustrative commercial TOU energy: summer on-peak ~$0.16181/kWh, shoulder ~$0.11089, off-peak ~$0.05998; winter on-peak ~$0.10191, shoulder ~$0.08094, off-peak ~$0.05998 (2024 brochure).+ Demand charges retained alongside time-of-use energy; see rate book. |
| Commercial & Industrial Gas (CG, IG, TFS/TFL/TI) | Gas (commercial/industrial) | Commercial Gas (CG) for general commercial use; Interruptible Industrial Gas (IG) for large interruptible loads; Firm Gas Transportation Small/Large (TFS/TFL) and Interruptible Transportation (TI) for customers procuring their own gas supply. | Monthly service/facility charge plus a commodity (cost of gas) charge under sales schedules; transportation schedules unbundle delivery from the gas commodity. Filed under PSCo gas tariff P.U.C. No. 6. | Commodity cost varies monthly via the Gas Cost Adjustment; specific $ values per the PSCo gas rate book.+ Demand/delivery components per schedule; see gas rate book. |
Rate Recommendations by Use Case
Automated interval data via Green Button
Connect an approved Green Button app for automated 15-minute interval data feeds.
PSCo's Green Button CMD support (ESPI/OAuth 2.0) is rare among large IOUs and enables hands-off, password-free automated data access.
- Apply as a Green Button provider via greenbuttonsupport@xcelenergy.com
- Allow up to 10 business days for approval
Enterprise energy management
Enroll in InfoWise for daily or real-time 15-minute interval analytics.
InfoWise provides flexible refresh tiers and API access ideal for HVAC optimization, demand response, and benchmarking across many meters.
- Pick a refresh tier matched to your use case
- Use the API tier for EMS integration
Multi-tenant / portfolio benchmarking
Aggregate rental and multi-site usage for benchmarking and reporting.
The Rental Usage Portal centralizes building-level data and supports third-party provider access for property managers.
- Register as a third-party service provider for managed properties
- Combine with Green Button for finer granularity
Consultant-authorized data access
Use My Account delegation or the CEUD form for authorized client data access.
Delegation gives quick portal access, while the CEUD form supports specific data scopes with up to a 3-year default consent.
- Be specific about purpose and data elements on the CEUD form
- Allow 5-10 business days for CEUD processing
Historical Rate Trends
PSCo C&I rates are reset through periodic CPUC base-rate cases and adjusted between cases by riders (fuel/electric commodity adjustment, transmission cost adjustment, DSM, purchased capacity). A major time-of-use rate restructuring was decided in CPUC Proceeding No. 24AL-0377E. Xcel filed a further multi-investment electric rate request in late 2025.
May 1, 2024
Updated commercial/industrial electric rates took effect per the PSCo Colorado Business Rates brochure (SG service & facility ~$88.07/mo; summer G&T demand ~$15.14/kW). Riders adjusted alongside.
Schedule-specific (see rate book)February 19, 2025
CPUC finalized deliberations in the Xcel Time-of-Use Rate Case (Proceeding No. 24AL-0377E), establishing new TOU rate structure with on-peak hours 5-9 p.m. weekdays year-round and on-peak pricing roughly 2.7x off-peak.
Restructuring (revenue-neutral for most customers per CPUC)November 1, 2025
Xcel filed a request with the CPUC to adjust electric rates to recover roughly three years of system investments; decision and effective date pending.
Pending CPUC decisionOverall trend: increasing
Next expected change: New time-of-use rates from Proceeding 24AL-0377E took effect in late 2025 (no earlier than October 2025), with year-round 5-9 p.m. weekday on-peak periods. Xcel's November 2025 electric rate request, if approved by the CPUC, would further adjust base rates; outcome and effective date pending.
Cost Optimization Strategies
PSCo C&I bills are dominated by seasonal generation & transmission demand charges and by service-voltage class. The biggest savings levers are summer peak-demand management, correct voltage/schedule selection, load-factor-based schedule choice (SG vs SGL), and time-of-use load shifting.
Manage summer peak demand
For: SG, SGL, PG, TG
Because summer G&T demand charges (~$15/kW) are roughly 60-70% higher than winter (~$9/kW), shaving the coincident summer peak via load staggering, storage, or curtailment yields outsized savings.
Choose the right voltage/service class
For: SG, PG, TG
Delivery-cost components decline from secondary (SG) to primary (PG) to transmission (TG). Customers with the equipment to take service at higher voltage should evaluate moving to PG or TG.
Match schedule to load factor
For: SG vs SGL
Low-load-factor secondary customers may pay less on SGL (G&T cost recovered through energy) than on standard SG, while high-load-factor customers usually prefer SG. Model both before electing.
Shift load off-peak on TOU/CPP
For: STOU, SG-CPP, PG-CPP, TG-CPP
On STOU and CPP schedules, move discretionary load out of the 5-9 p.m. weekday on-peak window and respond to critical-peak events; summer on-peak energy (~$0.16/kWh) is far above off-peak (~$0.06/kWh).
Optimize gas supply via transportation
For: CG, IG, TFS, TFL, TI
Large gas users can move from bundled sales (CG/IG) to transportation service (TFS/TFL/TI) and procure their own gas commodity, capturing market pricing while paying PSCo only for delivery.
To implement these strategies, you need your 15-minute interval data. Learn how to download Public Service Company of Colorado (Xcel Energy) interval data →
Frequently Asked Questions
Does Xcel Energy Colorado support Green Button Connect My Data?▾
Yes. PSCo supports Green Button Connect My Data (CMD), an ESPI-compliant OAuth 2.0 standard that lets customers authorize approved third-party apps to automatically receive their usage and 15-minute interval data. The web portal launched in 2020 under a 2017 Colorado PUC settlement.
How do C&I customers get 15-minute interval data?▾
Commercial and industrial customers can get 15-minute interval data through Green Button CMD (via an approved provider), the InfoWise service (monthly/daily/real-time tiers with portal and API access), or by submitting a CEUD form requesting 15-minute data.
How does a third party get authorized to access a customer's data?▾
Three main routes: My Account delegation (customer grants portal credentials), the CEUD authorization form (signed consent specifying purpose, data, and duration), or Green Button CMD (OAuth 2.0 authorization to an approved provider).
What EDI transactions does Xcel Energy support?▾
Xcel supports ANSI X12 transactions including 810 (Invoice), 814 (service requests), 820 (payment/remittance, not required), and 867 (usage reporting), delivered via VAN or FTP. Implementation typically takes 4-6 weeks.
Is retail electric choice available in Colorado?▾
No. Colorado is a fully regulated market with no retail electric choice. PSCo is the monopoly electric and gas provider in its territory, regulated by the Colorado PUC.
How far back does Xcel usage and billing data go?▾
Most systems retain up to 24 months of billing and consumption history. Interval data retention varies by program and meter deployment date.
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