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Tariff data · 2026-08-26
Connecticut Light & Power Co · CT

Rate 18- Controlled Water Heating Electric Service

When does peak hit on Connecticut Light & Power Co’s Rate 18- Controlled Water Heating Electric Service? One rate, every hour of the year.

  • off-peak22.38¢
Weekdays
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Weekends
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Weekends are off-peak all day — the cheapest time to run anything you can schedule.

What does Rate 18- Controlled Water Heating Electric Service cost a year?

HouseholdUsesPer yearWorks out to
Apartment

One or two people, no central air, no electric heat

4,866 kWh$1,22125.1¢ / kWh
Family home

Three or four people with central air conditioning

9,453 kWh$2,24823.8¢ / kWh
Home with an EV

Same house, plus an electric car charging overnight

13,103 kWh$3,06523.4¢ / kWh

Estimates, not quotes. We run three made-up but realistic households through this tariff hour by hour for a full year — including the way air conditioning loads the afternoon and an EV loads the small hours. Your own bill depends on when you actually use electricity, which is exactly the thing a per-kWh number hides.

What you actually pay

PeriodRateApplies when
off-peak22.38¢midnight–midnight

Plus a fixed charge of $11 per month.

Should you be on Rate 18- Controlled Water Heating Electric Service?

One rate, every hour of the year. That makes this plan predictable and nothing else: there is no cheap window to move laundry or car charging into, and no penalty for running the oven at six in the evening. Predictability is worth something if your schedule is not yours to control — but if it is, a flat rate is the one structure that guarantees you cannot benefit from it.

Before a single kilowatt-hour moves, this plan charges $132 a year in fixed fees. On the apartment above that is 11% of the whole bill; on the house with a car charging in it, 4%. Fixed charges are invisible in a cents-per-kWh comparison and they punish small users hardest — if you use very little electricity, the headline rate is the least important number on this page.

Expect the bill to move with the calendar. The same family home costs about $257 in July and $145 in February — a $112 spread driven by heating and cooling far more than by anything you chose. Budget against the July figure, not the average, and a summer bill stops being a surprise.

How it compares to Connecticut Light & Power’s other plans

Measured against the other residential plans this utility files, a family home lands 1st cheapest of 4 — nothing else here beats it for that household.

Against Rate 1 - Residential Electric Service, which looks like the plan you land on by default, this one comes out $629 less per year (22%). We infer the default from the tariff structure rather than a flag in the data, so confirm it against your own bill before you switch.

If this is new to you

Where this comes from

Effective
2026-01-01

the date this tariff took effect

Covers
delivery + supply

Distribution Service + Generation Service

Enrollment
open to new customers

Tariff document: https://www.eversource.com/docs/default-source/rates-tariffs/ct-electric/rate-18-ct.pdf?sfvrsn=b8c31c18_18