Important Alert: Beware of Scam Attempts! We've become aware of a scam involving individuals posing as PURA representatives, falsely promising utility bill refunds. Please note that PURA does not operate in this manner. All utility billing is exclusively handled through the electric distribution companies, Eversource and United Illuminating. PURA is a public agency and does not directly handle any billing issues. Specifically, we will never offer refunds for overcharged utility bills, nor do we solicit bank account information for any purpose. If you believe you have been scammed, please reach out to: PURA’s Education Outreach and Enforcement Customer Assistance Unit by emailing pura.information@ct.gov, the Office of Consumer Counsel by emailing occ.info@ct.gov or calling 860-827-2900, or the Office of the Attorney General at 860-808-5318.

Rate Case Timelines & Adjustments



The Public Utilities Regulatory Authority (PURA or the Authority) regulates the distribution rates of all investor-owned electric, natural gas, and water utilities in Connecticut. In order to modify their distribution rates, a company must file a detailed application to amend their rates with the Authority.

PURA is statutorily charged with conducting an adjudicated proceeding to investigate any rate application. This investigation is called a “rate case” and is one of the core functions of the Authority. PURA is guided by Conn. Gen. Stat. §§ 16-19 and 16-19e, among other statutes, when conducting a rate case and reviewing a rate application. The Office of Consumer Counsel is a statutory party in all PURA proceedings, including rate cases, and is charged with representing ratepayers’ interests before PURA.

By law, the utility company has the burden to prove that its proposed rates are just and reasonable. Conn. Gen. Stat. § 16-22. This burden requires the utility to provide more than mere assertions or documentation of expenses. Rather, the company must provide credible and sufficient evidence and clear explanations that demonstrate that the proposed rate change is just and reasonable and that the costs arise from prudent and efficient management of the utility.

Below is a list of Connecticut’s investor-owned utilities and information pertaining to their most recent rate case:

 
 
 
 
 
 

Electric Distribution Companies

 
 
 
 

Last Completed Distribution Rate Case

 
 
 
 

Ongoing Distribution Rate Case

 
 
 
 

Interim Rate Decision

 
 
 
 

Rate Schedule

 
Eversource Energy
 
 
 
 

N/A

 
 

October 2021:
Settlement Agreement

 
 
 
The United Illuminating Company
 
 
 
 

N/A

 
 
 
 
 

 

 
 
 
 
Major Water Companies
 
 
 
 

Last Completed Distribution Rate Case

 
 
 
 

Ongoing Rate Case

 
 
 
 

Interim Rate Decision

 
 
 
 

Rate Schedule

 

Connecticut Water Company

 
 
 
 

September 2023: Docket No. 23-08-32

 
 

N/A

 
 
 
 

Aquarion Water Company

 
 
 
 

N/A

 
 

N/A

 
 
 

Note: The Authority regulates six investor-owned water utilities in Connecticut, of which Connecticut Water Company (CWC) and Aquarion Water Company (Aquarion) are the largest. CWC serves approximately 108,000 customers (or roughly 350,000 people) and Aquarion serves approximately 207,000 customers (or roughly 700,000 people). Combined, the other four investor-owned water utilities in Connecticut serve approximately 9,500 customers.

 
 
 
 
 
 

Natural Gas Companies

 
 
 
 

Last Completed Distribution Rate Case

 
 
 
 

Ongoing Rate Case

 
 
 
 

Interim Rate Decision

 
 
 
 

Rate Schedule

 
 

Eversource

 
 
 
 

N/A

 
 

N/A

 
 
 
 

Connecticut Natural Gas Corp.

 
 
 
 

November 2023: Docket No. 23-11-02

 
 

N/A

 
 
 
 

Southern Connecticut Gas Co.

 
 
 
 

November 2023: Docket No. 23-11-02

 
 

N/A

 
 

*Final Decision approved a settlement agreement submitted for PURA’s consideration.


Related information: