How to Upgrade Commercial Lighting Controls Without Replacing Your Entire System

How to Upgrade Commercial Lighting Controls Without Replacing Your Entire System

Walk into the electrical room of almost any school, hospital, municipal building, or commercial campus built before 2010, and there’s a good chance the lighting control system hasn’t changed much since installation. Relay panels from Douglas, GE, Wattstopper, Synergy, MicroLite, and others are still operating in thousands of buildings across the country — and many are beginning to fail.

Parts are getting harder to find. Some manufacturers have exited the market entirely. Service calls are increasing. And the first answer facility managers often hear from contractors is: replace the whole system.

At Blue Ridge Technologies, we think that answer deserves a second look.

 

Why Commercial Lighting Controls Are Worth Getting Right

Lighting is one of the largest controllable energy expenses in any commercial building. According to the U.S. Energy Information Administration, lighting accounts for 17% of all electricity consumed in U.S. commercial buildings — the single largest controllable electricity end use in the commercial sector.

The U.S. Department of Energy’s Better Buildings program estimates total annual commercial lighting energy costs at approximately $9.9 billion. A DOE-commissioned meta-analysis by Lawrence Berkeley National Laboratory — covering 240 savings estimates from 88 papers and case studies — found that lighting controls can reduce lighting energy use by:

• 24% through occupancy controls alone
• 28% through daylighting controls
• 36% through institutional tuning and scheduling
• 38% when multiple control strategies are combined

When lighting controls are networked and integrated with the building automation system (BAS), results improve further. A 114-building study by the DesignLights Consortium found average energy savings of 47% from networked lighting control systems. When lighting shares occupancy data with HVAC through a BACnet-native integration, facilities can save an additional 30% on HVAC load — without replacing the HVAC system.

The DOE’s Better Buildings Interior Lighting Campaign documented $68 million in real-world energy savings and an average 54% energy reduction across participating organizations.

These results are achievable. They don’t require starting from scratch.

The Problem with “Replace Everything”

When an aging commercial lighting control system begins to fail, the default recommendation is often a full replacement: new panels, new enclosures, new wiring, new everything.

For some projects, that’s the right answer. For many, it isn’t — because the costs go beyond the hardware:

• Demo and removal labor for existing infrastructure
• Disruption in occupied buildings — schools, hospitals, offices
• Capital budget that may not be available or approved for the current fiscal year
• Schedule constraints that rule out lengthy shutdowns
• Waste — functional enclosures, relays, and field wiring that don’t need to go in the dumpster

The question worth asking before committing to a full replacement: what can we actually reuse?

 

Three Ways to Upgrade Commercial Lighting Controls

Blue Ridge Technologies helps facility teams, contractors, and BAS partners evaluate the existing system before recommending a path forward. In most cases, one of three approaches applies:

 

1. Retrofit Kit — Keep the Relays, Replace the Controls

If the existing relays are functional, a Retrofit Kit replaces only the control electronics inside the panel while leaving relays, enclosures, conduit, and field wiring in place. The result is a modern, BACnet-native lighting control system built on infrastructure that’s already there.

This is available for many legacy relay systems — including those from Douglas, GE, Wattstopper, and others — and is typically the lowest-cost, fastest-install upgrade path available.

 

2. Retrofit Interior — Keep the Enclosure, Replace Everything Inside

If the relays need replacement but the panel enclosure and field wiring are serviceable, a Retrofit Interior updates both electronics and relays while reusing the existing panel enclosure. No new enclosures. No disturbing existing conduit runs or branch circuit wiring.

 

3. New Control Panel — Where Retrofit Isn’t Practical

For projects where the existing infrastructure isn’t reusable, or for new construction, Blue Ridge provides full BACnet-native control panels in new enclosures — sized and configured for the specific project.

Legacy Commercial Lighting Control Systems We Can Help With

Blue Ridge has experience evaluating retrofit options for a wide range of aging and unsupported commercial lighting control systems, including:

If your facility is running any of these systems, a retrofit evaluation is worth completing before committing a full replacement budget.

 

Why BACnet-Native Lighting Controls Matter

Every Blue Ridge retrofit solution communicates natively on BACnet, the open protocol used by most building automation systems. This matters for three reasons:

This is what Blue Ridge calls Unified Lighting Control — and it’s the primary reason BACnet-native systems outperform gateway-dependent alternatives over the long run.

 

Energy Code Compliance — Another Reason to Act Now

Upgrading lighting controls isn’t just about aging infrastructure. The 2024 International Energy Conservation Code (IECC) and ASHRAE 90.1-2019 both require automatic shutoff, occupancy sensing, daylighting controls, and demand response capability in virtually all new and renovated commercial spaces.

For facilities planning renovations or capital upgrades, bringing lighting controls up to current standards is not optional — and doing it as part of a retrofit is significantly less disruptive and less expensive than doing it after the fact.

 

How to Start a Lighting Control Retrofit Evaluation

The evaluation process doesn’t require a site visit. Start by sending:

• Photos of the existing panels — front of panel, controller section, relay section
• Panel schedule if available
• Any existing drawings — single line, low voltage, or as-builts
• A brief description of the problem — what’s failing, what’s hard to source, what the building needs

Blue Ridge can review this information and provide an initial assessment of whether a retrofit path is available, which product approach fits best, and what the project scope looks like.

 

The Bottom Line

Commercial lighting controls are failing in buildings across the country. Parts are harder to find, legacy platforms are discontinued, and energy codes are tightening. The pressure to modernize is real.

But replacing everything isn’t always necessary — and it often isn’t the most practical choice.

Blue Ridge Technologies helps facility managers, building owners, MEP engineers, and BAS contractors find the most efficient path forward — one that reuses what’s working, replaces what isn’t, and results in a modern, BACnet-native lighting control system that integrates cleanly with the building automation system.

If you have an aging lighting control system and want to understand your options, contact us. The evaluation starts with photos.

 

Energy savings data sourced from: Lawrence Berkeley National Laboratory, A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings (U.S. DOE); DesignLights Consortium / NEEA, Energy Savings from Networked Lighting Control Systems (2020); U.S. DOE Better Buildings Interior Lighting Campaign; U.S. Energy Information Administration, Commercial Buildings Energy Consumption Survey.