Posted by Chris Byerly 
On Mon Oct 12By Chris Byerly, Director of Business Development, Chateau Energy Solutions
Most commercial and industrial facilities have already converted to LED lighting. So then, the obvious question is: If the lights are already LED, why replace them?
I expect that question to become more common as the first wave of LED retrofits gets older. The decision comes down to what has changed since the first installation and whether those changes create enough value to justify investing again.
An LED-to-LED lighting upgrade makes sense when the existing system is no longer delivering the light levels, reliability, efficiency, consistency, or operating value the facility needs. First-generation LED fixtures can be strong candidates when they are aging, beginning to fail, or no longer supported by the original manufacturer.
Some signs are easy to see: portions of fixtures are out, lights are strobing because of driver problems, or replacement fixtures no longer match. Other problems happen gradually. LED light output can decline slowly enough that people adjust without realizing it.
That is why I do not evaluate an LED system solely on whether the fixtures still turn on.
Older LED fixtures can become more difficult and more expensive to maintain as drivers fail, warranties expire, and replacement products disappear. Facilities may end up replacing fixtures one at a time with whatever is available, creating a mix of products with different light output, appearance, color, and warranties.
Manufacturer support matters too. Many companies entered the LED market early, and not all are still in business. If a fixture is out of warranty and unsupported, repairing or matching it may not be practical or even possible. At some point, continuing to replace individual fixtures can be a sign that it is worth evaluating the lighting system as a whole.
Chateau Energy recently worked with a manufacturer and distributor that had reached that point. A growing number of its existing LED fixtures were failing, and the fixtures were outside their warranty period. The client also wanted to improve the overall light quality within its facilities. Instead of continuing to address failures one fixture at a time, the company moved forward with an LED-to-LED upgrade. Newer LED technology allowed Chateau Energy to address our client’s aging equipment while providing better quality of light for their spaces.
That is an important distinction to keep in mind. The reason to consider another LED upgrade is not simply that newer fixtures are available. Aging equipment, recurring failures, expired warranties, light quality, and other operational needs can combine to make a broader LED-to-LED upgrade worth evaluating.
The economics of an LED-to-LED upgrade depend on more than the wattage difference between the old and new fixture. I also look at operating hours, utility rates, maintenance, existing light levels, controls opportunities, rebates, lifecycle cost, and the client’s payback requirements.
Current LED technology can often provide the required light using less wattage than first-generation LED fixtures, and the improvement over time has been significant. The DesignLights Consortium reports that the average efficacy of its qualified LED lighting products has increased 70% since the program began in 2011. That does not mean an LED-to-LED upgrade will reduce lighting energy use by 70%, but it does show how much commercial LED technology has advanced since many early systems were installed.
The opportunity can go beyond the fixture itself. Controls should also be evaluated as part of an LED-to-LED project, particularly if they were not included in the original installation. DesignLights Consortium research found that networked lighting controls can increase energy savings by an average of 49% compared with LEDs alone, although actual results vary based on the facility, control strategies, operating patterns, and system configuration.
That is why the strongest LED-to-LED projects usually solve more than one problem. Lower-wattage fixtures may reduce energy use, while a new system can also address dim areas, frequent failures, inconsistent fixtures, outdated controls, or spaces that no longer operate as they did when the original lighting was installed. It’s also important to not forget that utility incentives may further improve the economics.
A facility should not replace LED lighting simply because newer technology exists. There needs to be a business reason for doing it, and the full system should be evaluated to determine whether the operational and financial benefits justify the investment.
Most LED-to-LED lighting projects can still be approached as a one-for-one fixture replacement, but a redesign could potentially make sense when the facility itself has changed.
A warehouse may have moved aisles, or a storage area may now support production. Workstations may have recently been added. Those changes can alter the required light levels, optics, fixture types, or controls strategy.
In those situations, replacing the existing fixture with a newer version of the same thing can miss the opportunity. The lighting plan should support what is happening in the space today, even if that means redesigning only selected areas while the rest of the facility remains one-for-one.
For organizations with multiple locations, an LED-to-LED upgrade can also be an opportunity to address fixture inconsistency that has developed through years of replacements, renovations, acquisitions, and local purchasing decisions.
The goal does not have to be installing the exact same fixture everywhere. Different facility types and operating areas can have different lighting requirements. Instead, organizations can establish approved fixture families, performance standards, or lighting specifications that give facility teams more consistency while still accounting for how each space is used.
That can make future maintenance easier and help prevent facilities from accumulating an increasingly inconsistent mix of fixtures as older LEDs are replaced.
An LED-to-LED upgrade does not automatically make sense because the existing system is several years old. If the fixtures are performing well, light levels are appropriate, failures are limited, operating hours are low, and the savings do not support the required return, keeping the current system may be the better decision.
My job is NOT to assume replacement is the answer. It is to determine whether enough has changed since the first LED installation to make a second investment worthwhile.
A lighting audit is the best way to determine whether an existing LED system should be upgraded. When Chateau Energy performs a lighting audit, we document what is installed, evaluate light levels and operating conditions, review fixture age and wattage, identify problem areas, and compare the existing system with current options.
It helps when the facility has records from the original project, including fixture part numbers, lighting schedules, installation dates, manufacturer information, utility information, and warranty documentation. From there, we can model energy savings, maintenance impacts, controls opportunities, rebates, lifecycle cost, and payback.
That is the real question behind an LED-to-LED upgrade: not whether newer fixtures are available, but whether the facility will operate better and the numbers make sense.
If your facility’s LEDs are aging, failing, dimming, out of warranty, or becoming inconsistent, it may be time to evaluate the system rather than continue replacing fixtures one at a time.
Chateau Energy can audit your existing LED lighting, identify operational and maintenance problems, evaluate controls and utility incentives, and build the financial case for upgrading or leaving the current system in place.
Schedule a lighting assessment with our team to determine the right next step for your facility.
Schedule a Lighting Assessment
How old should LED fixtures be before considering replacement?
There is no single replacement age. Facilities with first-generation LEDs that are roughly eight to 10 years old may begin seeing more driver failures, expired warranties, declining light levels, or product obsolescence. Condition and economics matter more than age alone.
Can an LED-to-LED upgrade still save energy?
Yes. Newer LED fixtures can often provide the required light output at lower wattage than earlier-generation LEDs. Actual savings depend on the existing fixtures, operating hours, utility rates, controls, and facility requirements.
Should lighting controls be included in an LED-to-LED upgrade?
They should be evaluated. Occupancy sensing, scheduling, dimming, and daylight harvesting can improve savings in the right applications, but controls should be selected based on how each area operates rather than automatically added everywhere.
Are utility rebates available for LED-to-LED upgrades?
Sometimes. Eligibility varies by utility, location, fixture type, and program rules. Rebate availability should be checked early because incentives can affect project economics and may require preapproval.
Chateau Energy Solutions Making Energy an Asset®
Whether you need to fast-track power for a new facility, upgrade hundreds of sites, or electrify your fleet, Chateau Energy helps you reach your energy goals faster and smarter.
