CWLP customers
CWLP provides municipal electric service throughout Springfield and certain surrounding communities.
See CWLP rates →Springfield, IL Electricity Providers
Compare Springfield electricity rates, CWLP residential electric rates, Ameren Illinois supply options, renewable programs and utility charges. Enter your ZIP code to determine which electric utility serves your address.
CWLP service area
Ameren Illinois nearby
Current 2026 rates
Renewable options
Compare Springfield Electricity Rates →
Find your Springfield utility
Enter your ZIP code to determine whether your address is in the CWLP service area or another Illinois electric utility territory.
Springfield-area electric service varies by address. CWLP serves Springfield and certain surrounding communities, while Ameren Illinois serves other nearby areas. Always verify your utility before comparing supply rates.
11.39¢
CWLP summer residential rate*
1.3638¢
CWLP August 2026 fuel adjustment*
11.326¢
Ameren summer Price to Compare*
ZIP
Best way to identify your utility
Springfield electricity basics
Which Springfield electricity provider serves you?
Springfield is different from many Illinois cities. CWLP is the municipal electric utility serving Springfield and certain nearby areas. Other addresses in the Springfield region may be served by Ameren Illinois.
Ameren Illinois customers
Some nearby addresses are in the Ameren Illinois service territory and have different supply-choice options.
See Ameren rate →Best for comparing costs
Compare the applicable utility rate, monthly charges, fuel or supply adjustments and your actual household usage.
Compare total costs →Best for renewable energy
Compare CWLP renewable programs or eligible competitive supplier options where available.
See green options →
Springfield electricity rates
Compare current CWLP and Ameren Illinois rates
Springfield-area customers can encounter different electric utilities. CWLP is the municipal utility serving Springfield and certain surrounding areas. Ameren Illinois serves other locations in the region.
● Rate snapshot: September 2026
| Provider | Rate / plan | Current rate* | Monthly charge | 1,000 kWh example* | Rate structure | |
|---|---|---|---|---|---|---|
|
City Water, Light and Power
Springfield municipal utility
|
Rate 30 — Regular Residential |
11.39¢
/kWh
Summer base rate
|
$16.17/mo. | ~$130* | Municipal | View |
|
City Water, Light and Power
|
Rate 30 — Winter Residential |
9.88¢
/kWh
September 15 – May 14
|
$16.17/mo. | ~$115* | Seasonal | View |
|
CWLP
|
August 2026 fuel adjustment |
+1.3638¢
/kWh
|
Variable monthly adjustment | +$13.64* | Fuel adjustment | View |
|
Ameren Illinois
Utility supply service
|
Summer Price to Compare |
11.326¢
/kWh
June 1 – Sept. 30, 2026
|
Separate delivery charges apply | ~$113* | Utility supply | View |
|
Alternative retail suppliers
Ameren Illinois territory
|
Competitive supply offers |
ZIP-based
offer
|
Depends on supplier | Varies | Supplier choice | Compare |
*CWLP Rate 30 is the regular residential base rate effective March 1, 2026. The published summer base rate is 11.39¢/kWh with a $16.17 monthly customer charge. CWLP's August 2026 fuel adjustment is 1.3638¢/kWh and is applied separately. The simple 1,000-kWh figures above are illustrative calculations and do not represent a complete delivered bill. Ameren Illinois' 11.326¢/kWh summer Price to Compare applies June 1 through September 30, 2026 and covers supply and transmission rather than the complete delivered bill.
Springfield rate options
Compare Springfield electricity options
The right comparison depends first on your utility. CWLP customers have municipal rate schedules, while eligible Ameren Illinois customers may compare utility supply with alternative supplier offers.
CWLP
Rate 30 — Regular Residential
11.39¢
per kWh*
$16.17
Monthly charge
Summer
May 15–Sept. 14
+1.3638¢
Aug. fuel adjustment*
- Municipal electric service
- Summer and winter rates
- Monthly customer charge
- Fuel adjustment can change monthly
CWLP
Rate 30 — Winter Residential
9.88¢
per kWh*
$16.17
Monthly charge
Winter
Sept. 15–May 14
Seasonal
Rate
- Lower base energy rate than summer
- Applies during CWLP winter period
- Monthly customer charge applies
- Fuel adjustment remains separate
Ameren Illinois
Basic Generation Service
11.326¢
per kWh*
Summer
June–Sept.
Utility
Supply
11.326¢
Price to Compare
- Current summer 2026 supply benchmark
- Delivery charges are separate
- Eligible customers may compare suppliers
- Rates change between summer and winter
Competitive Suppliers
Ameren Illinois territory
ZIP
based pricing
Varies
Rate
Varies
Term
Varies
Fees
- Available only where supplier choice applies
- Offers maintained through Illinois' choice system
- Compare supplier rate with Ameren PTC
- Review all contract terms before enrollment
Springfield electricity guide
Check My ZIP Code
How to compare electricity costs in Springfield
The first question is not which supplier has the lowest advertised cents-per-kWh price. It is which utility serves your address. CWLP and Ameren Illinois use different electricity rate structures.
Check My ZIP Code
Step 1
Identify your utility
Springfield city addresses are generally associated with CWLP, while some nearby addresses are served by Ameren Illinois or another electric utility.
Step 2
Check your actual usage
Look at your previous electric bills. A 500-kWh apartment customer has a very different cost profile from a 1,500-kWh electrically heated home.
Summer
Watch cooling demand
CWLP's summer residential base rate is higher than its winter base rate, and cooling can also substantially increase household electricity use.
Winter
Check heating type
Homes using electric heating may consume considerably more electricity than homes primarily heated by natural gas or another fuel.
Understand your bill
What determines a Springfield electric bill?
Your total electricity cost depends on the utility, rate schedule, energy consumption and applicable adjustments or delivery charges.
CWLP base rate
CWLP's regular residential Rate 30 has a monthly customer charge and seasonal electricity rates. The current summer base rate is 11.39¢ per kWh.
CWLP fuel adjustment
CWLP applies a monthly fuel adjustment that can increase or decrease the effective electricity cost. The August 2026 adjustment is 1.3638¢ per kWh.
Ameren supply and delivery
Ameren Illinois separates electric supply from delivery service. Customers choosing a competitive supplier still receive delivery service from Ameren.
Before you compare
Five things to check before choosing an electricity option
Confirm whether the address receives service from CWLP, Ameren Illinois or another utility.
Compare the applicable energy rate with all customer charges and adjustments.
A cents-per-kWh comparison can be misleading if one option includes a fixed monthly charge.
Ameren-area customers considering an ARES should review the rate, term, cancellation provisions, fees and renewable content.
Springfield service areas
Springfield-area electricity service
CWLP's electric service area includes Springfield and certain surrounding communities. Exact service territory boundaries matter, so use your address or ZIP code rather than assuming the utility from the city name alone.
Ready to check your Springfield electricity rate?
Enter your ZIP code to identify your utility and compare the applicable electricity options.
Springfield electricity FAQ
Frequently asked questions
Important things to know before comparing electricity rates in Springfield, Illinois.
Who provides electricity in Springfield Illinois?
City Water, Light and Power (CWLP) is the
municipal electric utility serving Springfield
and certain surrounding areas. Some nearby
addresses are served by Ameren Illinois or
another utility, so the exact service address
should be checked.
What is the current CWLP electricity rate?
CWLP's regular residential Rate 30, effective
March 1, 2026, has a summer base electricity
rate of 11.39 cents per kWh, a winter base rate
of 9.88 cents per kWh and a $16.17 monthly
customer charge. A monthly fuel adjustment
is applied separately.
What is the August 2026 CWLP fuel adjustment?
CWLP's published August 2026 fuel adjustment
is 1.3638 cents per kWh, equivalent to $13.64
per 1,000 kWh. Fuel adjustments can change
from month to month.
What is the current Ameren Illinois electricity rate?
Ameren Illinois' summer 2026 Price to Compare
is 11.326 cents per kWh from June 1 through
September 30, 2026. This is a supply and
transmission comparison figure, not the
complete delivered electricity bill.
Can I choose an electricity supplier in Springfield?
It depends on your utility. Eligible Ameren
Illinois customers may choose an alternative
retail electric supplier for electricity
supply. CWLP customers receive municipal
electric service under CWLP's applicable
rate schedules.
Is Springfield Illinois electricity deregulated?
Illinois has competitive electricity supply
markets, but Springfield has a municipal
utility, CWLP, serving much of the city.
Customers in the Ameren Illinois territory
have different supplier-choice options.
Is CWLP cheaper than Ameren Illinois?
There is no simple apples-to-apples cents-per-kWh
answer. CWLP has a monthly customer charge,
seasonal rates and a fuel adjustment. Ameren
Illinois has separate supply and delivery
components. Compare the complete applicable
bill structure using your actual usage.
Does CWLP offer renewable electricity?
Yes. CWLP offers renewable-energy programs,
including its Renewable Choice program.
Customers should check CWLP's current program
pricing and terms before enrolling.
Why is my Springfield electricity bill higher in summer?
Summer electricity costs can increase because
of higher cooling usage. CWLP also uses a
higher summer base rate for regular residential
customers, from May 15 through September 14.
How do I find the cheapest electricity option?
First identify the utility serving your address.
Then compare the applicable rate, customer charge,
fuel or supply adjustments, delivery charges and,
where supplier choice applies, the complete
supplier contract terms.
Springfield electricity pricing disclosure: CWLP rates shown on this page are based on the current residential rate information published by City Water, Light and Power and are subject to applicable fuel adjustments, taxes and other charges. CWLP's published regular residential Rate 30 became effective March 1, 2026. The August 2026 fuel adjustment is 1.3638¢/kWh. Ameren Illinois' summer 2026 Price to Compare is 11.326¢/kWh and represents supply and transmission charges rather than the complete delivered bill. Rates, service territories and supplier offers can change. Always verify the current utility rate and supplier disclosure before making an enrollment decision.