Understanding Your Bill

Groton Utilities sends each customer a monthly bill for utility services. This website is aimed at helping you to understand the information it contains. For personal assistance, please feel free to call one of our Customer Service Representatives at 860-446-4000.

Understanding Your Bill 2026
  1. Payment Stub
    The top portion of you bill is perforated so you can tear it off and return it to us with your payment.  
  2. Past Due Date
    Your monthly bill is due upon receipt and becomes past due after 15 days.
  3. Usage
    Middle section shows your utilities usage for the month, based on readings.  Your average daily usage for each utility service is also included.
  4. Payments / Past Due Charges
    Any payments and / or past due balances will appear in this section of the bill.
  5. Current Charges
    Any current charges will appear in this section.
  6. History
    Graphs at the lower left display your usage history for the past 12 months, so you can see how much electricity and/or water you have used in the past.
  7. Budget Plan
    If you are on our Budget Billing Plan, a detailed payment information will be show here.

Back of Your Bill

The back of your bill includes general information aimed at helping you to better understand specific items. Following are explanations of various items which may appear on your bill.

Invoice Due Date

INVOICES ARE DUE UPON RECEIPT, WITH A 15 DAY GRACE PERIOD.

Late Charges

Past due invoices are subject to late charges once the next month’s invoice is rendered.

Readiness to Serve and Basic Service Charge

This charge covers the costs of providing your service, including meter reading, billing and maintenance of service lines and meters on your premises. The basics service charges cover fixed costs; they will be billed to you whether or not you have consumption.

KWH

This abbreviation stands for kilowatt-hour, the standard measure of electricity. A kilowatt-hour equals 1,000 watt-hours of electricity use.

Transmission Cost Adjustment

An adjustment will be applied to every kWh sold to reflect any difference between the base transmission costs included in rates and the actual transmission costs charged to the Department.

Distribution Charge

(Net Metering Rider only): This charge covers the cost for distribution.

Purchased Power Adjustment

An adjustment will be applied to every kWh sold to reflect any difference between the basic power costs included in rates and the actual power costs (not including transmission) billed to the Department for its load.

Groton Utilities Water / Sewer Customers Only

  • READINESS TO SERVE (WATER) / SEWER BASIC CHARGE This charge covers the costs of providing your service, including meter reading, billing and maintenance of service lines and meters on your premises. The basic service charges will be billed to you whether or not you have consumption.
  • CF: This abbreviation stands for a cubic feet, the standard measure of water quantity.
  • SEWER USAGE CHARGE: This charge is based on the number of Cubic Feet (CF) recorded on the water meter during the billing month.

Sales Tax

Commercial class customers are required by the State of Connecticut to pay sales tax on the electric portion of their bill.

Employee Identification

Every Groton Utilities / Bozrah Light and Power employee has an identification badge bearing his or her name and photograph.  For your protection, do not hesitate to ask to see it.

Meter Readings

All services are read and billed monthly. When we cannot obtain an actual reading, we will estimate your monthly usage.

RATES

Charges for utility services are based on rates approved by the Utility Commission. View all rates and fees.

Rules and Regulations

Are available on our website under Rules and Regulations