We are excited to offer an optional Time of Use (TOU) rate to customers with services on small and medium business rates. With a TOU rate, when you use electricity matters. Electricity costs more during peak hours when system demand is highest, and it costs less during off-peak times when demand is lower.
The TOU rate gives you more choice and control over your bill, allowing your business the flexibility to save money by making small adjustments to when you use electricity.
Learn how TOU works, who’s eligible, how to sign up, and other key details in the FAQ below and use our Energy Insights tool to find out if the TOU rate may be a good fit for your business!
Rate Details
Sign up for the TOU rate using the Energy Insights platform. Follow these steps to get started:
- Go to the Utility Services Website and log into your Utility Services profile. If you don't have a profile yet, click Register Now to create one. Once you register for a profile, access to Energy Insights is typically available within 24-48 hours, but in some cases, it may take up to 7 days.
- After you log in, you’ll see the Account Overview page. On the left side, click the service address of the account you want to manage. If you have more than one service address, make sure you choose the correct one.
- On the account page, you’ll see a summary of your recent bill and a menu bar on the right side. Click View Rate Options and Energy Insights. This opens the Energy Insights tool.
- In Energy Insights, scroll to find the Your Rate Plans section. Click Compare All Plans.
- Scroll down and click Learn More under the Time of Use Rate.
- Click the Enroll in this rate plan button in the top right corner.
- Review the Time of Use rate pricing details, check the boxes, and click the Enroll Now button.
That's it!
You will get a confirmation email that lets you know your request is being processed. In 5-7 days, you will get a welcome email with more information about the rate. Your enrollment will be active starting from the date you enrolled.
Time of Use Rate Pricing
| Rate Type | City of Seattle (C) |
Downtown Network (D) |
Burien (B) SeaTac (E) Shoreline (H) Unincorporated King County (K) |
Lake Forest Park (L) |
Normandy Park (N) |
Tukwila (T) |
Renton (S) |
|---|---|---|---|---|---|---|---|
| Base service charge per day | $0.82 | $0.82 | $0.81 | $0.81 | $0.80 | $0.81 | $0.75 |
| Peak energy charge per kWh | $0.1524 | $0.1524 | $0.1542 | $0.1543 | $0.1519 | $0.1534 | $0.1428 |
| Mid-Peak energy charge per kWh | $0.1334 | $0.1334 | $0.1350 | $0.1351 | $0.1330 | $0.1343 | $0.1250 |
| Off-Peak energy charge per kWh | $0.0762 | $0.0762 | $0.0771 | $0.0771 | $0.0760 | $0.0767 | $0.0714 |
We are using a three-tiered peak system: peak, mid-peak, and off-peak. The price you pay for electricity will depend on when you use it.
- Peak Energy Use hours are when electricity is most expensive. This will be from 5 p.m. to 9 p.m., Monday through Saturday, except on observed holidays.
- Mid-peak Energy Use hours will be from 6 a.m. to 5 p.m. and from 9 p.m. to midnight, Monday through Saturday. On Sundays and observed holidays, mid-peak pricing applies all day from 6 a.m. to midnight (with no peak hours).
- Off-peak Energy Use hours are when electricity cost is lowest. This will be from midnight to 6 a.m. every day.
Time of Use Rate Pricing
| Rate Type | City of Seattle (C) |
Downtown Network (D) |
Burien (B) SeaTac (E) Shoreline (H) Unincorporated King County (K) |
Lake Forest Park (L) |
Normandy Park (N) |
Tukwila (T) |
Renton (S) |
|---|---|---|---|---|---|---|---|
| Base service charge per day | $3.01 | $3.01 | $3.25 | $3.25 | $3.20 | $3.24 | $3.01 |
| Peak energy charge per kWh | $0.1218 | $0.1360 | $0.1315 | $0.1316 | $0.1296 | $0.1311 | $0.1218 |
| Mid-Peak energy charge per kWh | $0.1066 | $0.1190 | $0.1151 | $0.1152 | $0.1134 | $0.1147 | $0.1066 |
| Off-Peak energy charge per kWh | $0.0609 | $0.0680 | $0.0658 | $0.0658 | $0.0648 | $0.0655 | $0.0609 |
| Peak demand charge per kW | $5.36 | $12.19 | $5.79 | $5.79 | $5.70 | $5.77 | $5.36 |
| Off-Peak demand charge per kW | $0.31 | $0.31 | $0.33 | $0.33 | $0.33 | $0.33 | $0.31 |
For our Time of Use rate, we are using a three-tiered peak system: peak, mid-peak, and off-peak. The price you pay for electricity will depend on when you use it.
- Peak Energy Use hours are when electricity is most expensive. This will be from 5 p.m. to 9 p.m., Monday through Saturday, except on observed holidays.
- Mid-peak Energy Use hours will be from 6 a.m. to 5 p.m. and from 9 p.m. to midnight, Monday through Saturday. On Sundays and observed holidays, mid-peak pricing applies all day from 6 a.m. to midnight (with no peak hours).
- Off-peak Energy Use hours are when electricity cost is lowest. This will be from midnight to 6 a.m. every day.
The demand charges are based on:
- Peak Demand Charge is based on a customer’s maximum demand during peak periods. "Peak" is defined as the period Monday through Saturday, 6 a.m. to midnight, excluding observed holidays.
- Off-Peak Demand Charge is only charged for the maximum demand in off-peak periods that is in excess of peak demand.
We are using a three-tiered peak system: peak, mid-peak, and off-peak. The price you pay for electricity will depend on when you use it.

This chart is for illustrative purposes only and provides a visual overview of the Time of Use rate tiered-peak system.
- Peak hours are when electricity is most expensive. This will be from 5 to 9 p.m., Monday through Saturday, except on observed holidays.
- Mid-peak hours will be from 6 a.m. to 5 p.m. and from 9 p.m. to midnight, Monday through Saturday. On Sundays and observed holidays, mid-peak pricing applies all day from 6 a.m. to midnight (with no peak hours).
- Off-peak hours are when electricity cost is lowest. This will be from midnight to 6 a.m. every day.
Time of Use Basics
Time of Use rates are electricity prices that change depending on the time of day you use energy. They’re designed to reflect fluctuations in demand. The cost is lower during off-peak hours, when demand is lower, and higher during peak hours, when demand is at its highest.
For example, if your business operates high‑energy equipment such as commercial washers or large mixers at 12 a.m., during an off‑peak period, it will cost less than running that same equipment at 6 p.m. during peak hours. This new rate gives you more flexibility to save money by making small adjustments to when your business uses electricity.
It’s about more than saving money, though. Using energy during off-peak hours can also help balance demand on the power grid, which helps contribute to the energy system.
We’re offering a TOU rate for a few key reasons. First, it’s about providing options. TOU pricing gives you new ways to control your energy bill.
Second, it’s about making the grid more efficient. When we shift some energy use to off-peak times, it reduces strain during high-demand periods. That makes the system more reliable and helps lengthen the life of our infrastructure.
Finally, it aligns with our energy goals. When demand is spread more evenly, it’s easier to rely on renewable resources, such as hydro, solar, and wind. This pricing system is part of a long-term plan to create a more sustainable energy future for our communities.
Eligibility and Enrollment
- To enroll in TOU, your service must be billed on a small or medium business rate. Some large or industrial customers may also have qualifying services.
- You must have an advanced meter (also called an Advanced Metering Infrastructure or AMI meter). An advanced meter is a digital meter that records your energy use every 5 or 15 minutes and sends the data wirelessly to Seattle City Light. This data allows City Light to bill you based on when you use electricity, not just how much you use, allowing you to take advantage of lower rates during off-peak hours.
- To check if you have an advanced meter:
- On your meter, look for a seven-digit number that starts with a "2" on the meter’s badge.
- On your bill, find the meter number under the "Detailed Billing Information" section. A seven-digit number starting with a "2" indicates it is an advanced meter.
- To check if you have an advanced meter:
- You must have a Utility Services Website profile. If you don't have a profile, you can sign up today! Once you register for a profile, access to Energy Insights is typically available within 24 - 48 hours, but in some cases, it may take up to 7 days.
- Customers on Budget Billing or GreenUp are eligible to participate. Budget Billing and GreenUp customers will experience recalculations shortly after enrollment.
- Currently, we are not offering the TOU rate to net metering (solar) customers, but we are exploring ways to make it available to them in the future.
Currently, we are not offering the TOU rate to net metering (solar) customers, but we are exploring ways to make it available to them in the future.
You can unenroll from the TOU rate at any time. However, if you do unenroll, there is a 12-month waiting period before you can re-enroll in the TOU rate.
Energy Insights Basics
Energy Insights is an online platform accessed through the Utility Services Website that provides personalized insights into how your business uses energy. The tools deliver opportunities for energy savings through education.
Inside Energy Insights, you can:
- Compare rate options. See personalized bill estimates for each available rate to easily compare costs.
- Sign up for a new rate. If Time of Use looks like a good fit for your business, you can sign up.
- Compare past bills. Look at recent bills side by side to better understand how your energy use changes over time.
- Track energy use and bills. View recent usage and billing data so you can explore trends.
Getting started is easy:
- Go to the Utility Services Website and log into your Utility Services profile. If you don’t have a profile yet, click Register Now to create one. Once you register for a profile, access to Energy Insights is typically available within 24 - 48 hours, but in some cases, it may take up to 7 days.
- After you log in, you’ll see the Account Overview page. On the left side, click the service address of the account you want to manage. If you have more than one service address, make sure you choose the correct one.
- On the account page, you’ll see a summary of your recent bill and a menu bar on the right side. Click View Rate Options and Energy Insights. This opens the Energy Insights tool.
Billing and Metering
On observed holidays, mid-peak pricing applies all day from 6 a.m. to midnight (with no peak hours). City light observes holidays defined by the North American Electric Reliability Corporation (NERC).
- New Year's Day
- Memorial Day
- Independence Day
- Labor Day
- Thanksgiving Day
- Christmas Day
If any of these fall on a Sunday, the NERC holiday is observed on the following Monday. If they fall on a Saturday, the holiday remains on that Saturday.
An advanced meter (also called an Advanced Metering Infrastructure or AMI meter) is a digital meter that records your energy use every 5 or 15 minutes and sends the data wirelessly to City Light using radio frequency waves. This is like the wireless communications used by cell phones and Wi-Fi. The meters transmit data for a maximum of 90 seconds per day.
To check if you have an advanced meter:
- On your meter, look for a seven-digit number that starts with a "2" on the meter’s badge.
- On your bill, find the meter number under the "Detailed Billing Information" section. A seven-digit number starting with a "2" indicates it is an advanced meter.
- If you see these numbers, you have an advanced meter. Having one is necessary to participate in the Time of Use rate because the data allows City Light to bill you based on when you use electricity, not just how much you use.