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CO Regulatory Rates and Tariffs

Colorado Rates, Rights and Service Rules

Overview

In Colorado, our operating utility Public Service Company of Colorado is engaged primarily in the generation, purchase, transmission, distribution and sale of electricity and the purchase, transportation, distribution and sale of natural gas to retail customers. The company also transports customer-owned natural gas. The Colorado Public Utilities Commission regulates the company for state issues, and federal regulatory agencies oversee other aspects of its operations.

Electric Rate Book

Steam Rate Book

Natural Gas Rate Book

Electric Commodity Adjustment (ECA)

Xcel Energy adjusts its Electric Commodity Adjustment (ECA) quarterly to reflect the cost of energy utilized to supply electric service.

Quarterly ECA Factor Change
  1st Quarter 2014 January - March Price ($kWh) 2nd Quarter 2014 April - June Price ($kWh)
Residential 0.03325 0.03806
Small Commercial 0.03325 0.03806
Commercial & Industrial Secondary 0.03325 0.03806
  Optional Time-of-Use Off-Peak 0.02864 0.03097
  Optional Time-of-Use On-Peak 0.04124 0.04739
Primary General
  Time-of-Use Off-Peak 0.02692 0.03082
  Time-of-Use On-Peak 0.04119 0.04715
Transmission General
  Time-of-Use Off-Peak 0.02663 0.03048
  Time-of-Use On-Peak 0.04074 0.04663
Average Customer Bill Impact
  1st Quarter 2014 January - March Average Bill 2nd Quarter 2014 April - June Average Bill % Bill Change
Residential - Avg. usage 632 kWh $70.61 $73.72 4.40%
Small Commercial - Avg. usage 1,123 kWh $114.73 $120.24 4.80%

We hope that by providing you this information quarterly, you will be able to better budget and adjust your energy usage. The information provided above shows only the prices that are changing due to the change in the ECA and the average effect of those changes. For more information on your Xcel Energy electric bill or for customer bill impact information on larger commercial or industrial customers on rate schedules not shown above, please call 1-800-895-4999.

Gas Cost Adjustment (GCA)

Colorado Quarterly GCA

Xcel Energy adjusts natural gas prices quarterly to reflect the market price of the commodity. All of these costs are passed through to you on a dollar-for-dollar basis through our Gas Cost Adjustment that has been approved by the Public Utilities Commission of the State of Colorado. We hope that by providing you this information each quarter, you will be better able to budget and adjust your energy usage. The information provided in the PDF link below shows only the prices that are changing this quarter and the average effect of those changes. It doesn't show the costs that are not changing.

You may also call our customer service regarding your natural gas bill at 1-800-895-4999.

Colorado Firm Historical Gas Price Service

View the historical price information provided in the PDF links below:

State Commission

Choose your state

Our products and services differ based on state. Please select your state (or the state you're interested in) from the list to the left.

Why do our products and services differ based on state? Because our business is regulated by state. We have regulated operations in eight Western and Midwestern states. The different regulatory body for each state we serve determines what products and services we deliver in that state.