​​​Frequently Asked Questions​

​​Who is CenterPoint Energy?​

​CenterPoint Energy, Inc., headquartered in Houston, Texas, is a domestic energy delivery company that includes electric transmission & distribution, natural gas distribution and energy services operations. The company serves more than five million metered customers primarily in Arkansas, Louisiana, Minnesota, Mississippi, Oklahoma, and Texas. The company also owns 54.1% percent of the common and subordinated units representing limited partner interests in Enable Midstream Partners, a publicly traded master limited partnership it jointly controls with OGE Energy Corp., which owns, operates and develops natural gas and crude oil infrastructure assets. With more than 7,700 employees, CenterPoint Energy and its predecessor companies have been in business for more than 150 years. In Minnesota, CenterPoint Energy is the state’s largest natural gas distribution utility, serving about 840,000 customers in 260 communities. The utility also operates a non-regulated business in Minnesota called Home Service Plus®. For more information, visit CenterPointEnergy.com.

What is a rate case?​​

A rate case is the regulatory process that public utilities (natural gas, electric and telephone) must follow to formally change their rates.  The Minnesota Public Utilities Commission (MPUC) regulates rate changes, and any proposed changes must first go through a review process before receiving a final decision by regulators.

Who is the Minnesota Public Utilities Commission (MPUC)?​​​

The MPUC regulates utility service industries in Minnesota, including electricity, natural gas and telephone. It is responsible for ensuring that vendors of these services provide safe, adequate and reliable service at fair, reasonable rates.  

​How is the Commission formed?​​​

The MPUC consists of five commissioners appointed by the governor to six-year, staggered terms. By law, no more than three commissioners can be of the same political party and at least one commissioner must reside, at the time of appointment, outside the seven-county metropolitan area. The governor designates one of these commissioners to serve as chair.

What is an interim rate?

Interim (temporary) rates are an approved percentage increase on all customer bills.  State law permits CenterPoint Energy to charge Interim rates which are in place while a general rate case is reviewed by the MPUC and other parties.       

How much is the interim rate increase?

The MPUC has approved an overall interim rate increase of $47.8 million, or about 5.4 percent more than current rates.

How long will interim rates be in place?

Interim rates will be in place during the entire time the rate case is being reviewed.  Interim rates are effective for service rendered on and after October 1, 2017 and final rates will be implemented after a final decision is issued in the summer of 2018.

What happens if final rates are different than interim rates?

If final rates are lower than interim rates, we will refund customers the difference with interest.  If final rates are higher than interim rates, customers will receive no additional charges for natural gas used while interim rates were in effect.

How will customers be notified of interim rates?

Customers will begin to see the interim rate adjustment as a line item on their October 2017 invoices (interim rates will be pro-rated the first month and are displayed as a single line item).  In addition, a bill message about the adjustment will display on the first invoice that includes interim rates and a bill insert with more detail will be included with all October invoices.

Why is CenterPoint Energy Minnesota Gas asking for an increase?

Our last request for a rate increase for natural gas distribution service was in 2015. Since that time, we have made and continue to make significant investments to serve our customers. These investments, such as our ongoing pipeline replacement programs, maintain the safety and reliability of our natural gas system and benefit our customers and communities.​

What is the next step in the rate case for customers, and how can they learn more if they wish?

Rate case information can be found on the CenterPoint Energy website at: http://www.centerpointenergy.com/ratecase.  There are also details in the bill insert about how to comment on the rate case.  Additionally, public hearings will be held where customers can voice their opinion about the rate case (customers will be notified of dates, times and locations as they become available).

What will the impact be on an individual customer bill?

The proposed rate changes will affect individual monthly bills differently depending on natural gas use and customer group.  Bills will also vary because the wholesale cost of natural gas changes each month. Customers’ bills contain three parts: Basic Charge, Delivery Charge and cost of gas, which is passed through directly to customers without mark-up.  The proposed Basic Charges and Delivery Charges recover only the cost of providing utility distribution service to our customers – about 40-50 percent of the bill.  They do not include wholesale gas costs – about 50-60 percent of the bill.  The following table shows the effect of both the interim and proposed rate changes on monthly bills for different classes:​

​​Customer Type
(usage in​ therm​s)
​Average Monthly Usage (in therms)​Average Monthly Bill: Current Rates​Average Monthly Bill: 
Interim Rates
​Average Monthly Bill: Proposed Rates
 Up to 1,500/year
 1,500 to 5,000/year
 5,000 or more/year




​Small Volume Dual Fuel Sales Service
 Up to 120,000/year
 120,000 or more/year




​Large Volume Dual Fuel Sales Service​59,449​$26,452​$27,127​$27,154
​Large General Firm Sales Service​38,061​$17,399​$18,060​$18,195
​Demand charge (per Peak Day)​​298
​*Figures above are rounded (to the nearest whole number).​​​​​

When was the last time CNP increased its base rates?​​

We last filed a rate case in 2015.  The MPUC approved an increase of about 3.5 percent of annual revenues, which went into effect in December of 2016.  The effect on a typical residential customer was about $2 per month.

Does the MPUC have to approve our filing?​​

No.  The MPUC has an obligation to determine “just and reasonable” rates.  The MPUC allows a utility company to recover costs that it deems to be reasonable and necessary in providing utility service.

Are the new rates needed to recover changes in wholesale natural gas prices?​​

No.  The wholesale cost of natural gas is passed through to our customers with no mark-up.  Currently and over the past year, natural gas prices have remained reasonably low.

What are we doing to keep natural gas costs reasonable?​​

We have the expertise and the experience to buy natural gas at the lowest reasonable prices in order to provide our customers with the best energy value:
  • ​​We secured ample supplies for the upcoming heating season.
  • We work with some of the largest suppliers in the U.S. and Canada and buy gas on a competitively bid basis.
  • We acquire natural gas and fill our storage facilities over the spring and summer to meet customers’ peak heating season requirements, and hedge or fix the costs on a portion of that portfolio.  Our supply portfolio includes contracts with varying terms, conditions and lengths.

Is natural gas still a good value for customers?​​

Yes!  Natural gas is an excellent energy value – a clean, efficient, abundant and affordable fuel for home heating, water heating, and for providing fuel to industry.  Natural gas remains your best energy value.  Our Average Monthly Billing option is the best way to keep your costs level.

Are there ways to help me manage my bill?​​

Yes, the Average Monthly Billing​ option is a great tool to help you manage winter payment peaks and to even out your projected natural gas charges.  The program balances out your payments and you still only pay for the amount of natural gas you use.

Where can I find out more information?

As the rate case progresses, customers will receive additional important information via bill inserts o​r other communication channels.


Basic Charge:  Partially covers the cost of those services we provide every month, regardless of how much gas a customer uses.  These fixed costs include maintenance of gas service lines and regulators; gas meters; meter reading; billing; maintaining facilities; and vehicles and equipment.

BTU:  British Thermal Unit

Cost of Gas:  Cost of Gas is the cost CenterPoint Energy pays for the gas it delivers to its customers.  The cost per therm usually varies from month to month as the prices we pay producers and suppliers change, typically increasing in the winter, when demand is high and decreasing in the summer when demand is low. ​

Delivery Charge:  Recovers the costs not recovered through the Basic Charge, including taxes, salaries, depreciation, interest, etc.

Interim Rates:  Interim rates are a temporarily approved overall percentage increase on all customer bills that are effective two months after a rate filing.  These rates are collected without changes to our overall rate design.  We are allowed to charge interim rates to recover the company’s higher cost of providing natural gas service while regulators use the next year to determine the final rates to approve.

Therm:  A therm is a measurement unit for natural gas and is the equivalent of 100,000 BTUs.  Our average residential customer uses approximately 865 therms per year. ​