What’s the Cost Difference Between LED and Incandescent Lighting Over Time?

Over a 10-year period, switching from incandescent to LED lighting can save a typical Chicago homeowner between $1,000 and $2,000 or more in energy and replacement costs. In this post, we break down exactly where those savings come from, what LED bulbs actually cost upfront, and how to calculate your own potential savings.

We also cover what homeowners in Chicago and the surrounding suburbs should know before upgrading their lighting, including local utility rates and common installation questions.

Understand the Basic Cost Difference Per Bulb

The upfront price difference between LED and incandescent bulbs is real, but it shrinks quickly once you factor in lifespan and energy use. Here is a straightforward comparison based on current retail pricing.

Bulb Type	Avg. Upfront Cost	Lifespan (Hours)	Wattage (60W equivalent)	Annual Energy Cost*
Incandescent	$1 – $2	1,000 – 2,000	60W	$7.23
LED	$3 – $8	15,000 – 25,000	8-10W	$1.00 – $1.20

*Annual energy cost based on 3 hours of use per day at the average Illinois residential electricity rate of approximately $0.13 per kWh as of 2024.

An LED bulb costs more upfront, but it uses about 75 to 80 percent less electricity than an incandescent bulb producing the same amount of light. That gap adds up fast across every fixture in your home.

Calculate the 10-Year Cost of Running Each Bulb Type

Let’s put real numbers to this. If you run a single 60-watt incandescent bulb for 3 hours a day, you spend roughly $7.23 per year on electricity for that one bulb. An equivalent LED running the same hours costs about $1.08 per year.

Over 10 years, that is a difference of more than $61 per bulb in electricity alone. But incandescent bulbs also need to be replaced far more often, which adds to the total cost.

Cost Category	Incandescent (10 Years)	LED (10 Years)
Electricity Cost (per bulb)	~$72.30	~$10.80
Replacement Bulbs Needed	5 – 10 bulbs	0 – 1 bulbs
Replacement Bulb Cost	$5 – $20	$0 – $8
Total 10-Year Cost Per Bulb	~$77 – $92	~$11 – $19

Multiply that difference across 20, 30, or 40 bulbs in a typical home and you are looking at real, significant savings over time. For many Chicago households, the payback period on LED bulbs is under 12 months.

See How Chicago Electricity Rates Affect Your Savings

Illinois homeowners pay electricity rates that vary depending on your utility provider and time of use. Most Chicago-area residents are served by ComEd, with average residential rates hovering around $0.12 to $0.15 per kWh in recent years.

That rate directly impacts how fast you recoup the cost of switching to LED. Higher rates mean faster payback. Here is what your savings might look like based on your specific rate.

• At $0.12/kWh, switching 30 bulbs from incandescent to LED saves roughly $150 to $180 per year.
• At $0.14/kWh, the same switch saves approximately $175 to $210 annually.
• At $0.16/kWh, savings climb to $200 to $240 or more per year.
• Homes in suburbs like Naperville, Aurora, or Joliet served by different municipal utilities may see slightly different rates.
• Older homes with many fixtures and high usage hours will see the fastest payback periods.

If you are unsure what rate you pay, check your ComEd or local utility bill. The cost per kWh is listed on every statement. Jimco Electric can also help you evaluate your home’s overall energy usage when we come out for a lighting assessment.

Compare LED and Incandescent Across Different Room Types

Not every room in your home uses lighting the same way. A kitchen or workspace with lights on 6 to 8 hours a day will see much faster savings than a guest bedroom used occasionally. Here is how the math changes by room type.

• Kitchen: High daily use means LED saves $15 to $25 per bulb per year. With 8 to 12 fixtures, this is often the highest-impact room to upgrade first.
• Living Room: Moderate use of 3 to 5 hours daily. Savings of $8 to $12 per bulb per year are typical.
• Bathroom: Multiple fixtures over vanities benefit well from LED. Bright, consistent light output is also much better with LED over time.
• Garage or Workshop: If you use this space regularly, LED shop lights or tube replacements can cut lighting costs by 60 to 70 percent.
• Outdoor Fixtures: Porch lights and security lights often run 8 to 12 hours overnight. LED bulbs here pay back extremely quickly.
• Basement or Utility Rooms: Less frequent use, but LED still makes sense for bulb life and reduced maintenance.

Prioritizing high-usage rooms first gives you the fastest return. Jimco Electric often recommends starting with kitchens, living areas, and outdoor fixtures when helping homeowners plan a phased LED upgrade.

Understand LED Quality Differences and What to Look For

Not all LED bulbs are created equal. Cheaper bulbs from discount stores may fail early or produce light that feels harsh or unpleasant. Knowing what to look for helps you get the savings without the frustration.

When shopping for LED bulbs, focus on these key specifications:

• Lumens, not watts: Lumens measure brightness. A 60-watt incandescent produces about 800 lumens. Look for an LED rated at 800 lumens as the equivalent.
• Color temperature: 2700K to 3000K gives a warm white similar to incandescent. 4000K to 5000K is cooler and better for workspaces.
• CRI (Color Rendering Index): Look for a CRI of 80 or higher for accurate color representation in living spaces.
• ENERGY STAR certification: This label means the bulb has been independently tested and meets federal efficiency standards.
• Brand reliability: Philips, GE, Cree, and Sylvania are consistently reliable options available at most Chicago-area hardware stores.
• Dimmable labeling: If you have dimmer switches, make sure the LED is labeled as dimmable or you will have flickering and buzzing issues.

Spending a bit more on a quality LED from a proven brand will get you the full 15,000 to 25,000 hours of life and the full savings potential. Cheap bulbs burning out in two years eliminate most of the cost advantage.

Know When to Call an Electrician for Your LED Upgrade

Many LED upgrades are as simple as swapping a bulb. But some situations in Chicago-area homes call for professional help to do the job safely and correctly.

You should contact a licensed electrician like Jimco Electric if you are dealing with any of the following:

• Recessed can fixtures that need to be converted or retrofitted for LED compatibility.
• Dimmer switches that are incompatible with LED bulbs and need to be replaced with LED-compatible dimmers.
• Flickering or buzzing issues after installing LED bulbs, which can indicate a wiring or compatibility problem.
• Older homes in Chicago or the suburbs with aluminum wiring or outdated fixtures that may not safely support new lighting systems.
• Installing LED under-cabinet lighting, LED strip lighting, or driver-based systems that require low-voltage wiring.
• Commercial or multi-unit properties where bulk lighting upgrades need to meet local building codes.

Chicago and many suburban municipalities follow the National Electrical Code with local amendments. Any new fixture installation or wiring change typically requires the work to be done by a licensed electrician. Jimco Electric handles permit coordination as needed for larger lighting projects.

FAQs on LED vs Incandescent Lighting Costs

How long does it take for LED bulbs to pay for themselves?

For most Chicago-area homeowners, LED bulbs pay back their upfront cost within 6 to 12 months through energy savings alone. High-use fixtures like kitchen and outdoor lights pay back even faster, sometimes within just a few months of switching.

Are LED bulbs worth it if I don’t use a light very often?

Yes, but the payback period is longer. Even in low-use areas, LED bulbs last so much longer than incandescent that you will still save money on replacements over time. The inconvenience of changing bulbs in hard-to-reach fixtures is also eliminated.

Can I put LED bulbs in any incandescent fixture?

In most cases, yes. Standard LED bulbs fit standard sockets without any modification. However, enclosed fixtures, dimmable circuits, and older recessed cans may need compatible bulbs or fixture updates. If you are unsure, an electrician can check your setup before you buy in bulk.

Do LED bulbs work well in Chicago’s cold winters?

LED bulbs actually perform better in cold temperatures than incandescent or CFL bulbs. They start instantly even in unheated garages or outdoor fixtures. Cold weather does not reduce LED efficiency, which is a real advantage for Chicago winters.

Is there a rebate program for switching to LED in Illinois?

Yes. ComEd offers energy efficiency rebates through its Smart Ideas program, which has included instant discounts on LED bulbs at participating retailers. Check the ComEd website or contact Jimco Electric to ask about current programs available in your area.

What happens if my LED bulb flickers after I install it?

Flickering is usually caused by an incompatible dimmer switch or a voltage issue in the circuit. Replacing the dimmer with an LED-compatible model typically resolves it. If flickering continues without a dimmer present, that can indicate a wiring issue that should be inspected by a licensed electrician.

Wrap Up and Next Steps

The numbers are clear: LED lighting costs significantly less to operate over time than incandescent bulbs, and most Chicago homeowners see full payback in under a year. Combining lower energy bills with far fewer replacements, the long-term savings are hard to ignore.

If you are ready to upgrade your home’s lighting, or if you have fixtures, dimmers, or wiring that need professional attention first, Jimco Electric is here to help. We serve homeowners throughout Chicago and communities up to 40 miles outside the city, including suburbs across Cook, DuPage, Will, and Kane counties.

Call Jimco Electric today at 708-304-8687 to schedule a lighting consultation or get a quote for your LED upgrade project. Our team is happy to walk you through your options and help you start saving right away.