Commercial Flagpole Lighting: The complete Guide for Businesses & Institutions

Federal law sets one rule for flying the American flag overnight: under 4 U.S.C. § 6(a), the flag may be displayed 24 hours a day only if it is properly illuminated during the hours of darkness. This guide explains what that means for a commercial or institutional site, why top-of-pole LED beacons replaced ground floodlights as the professional standard, and the measured photometrics, DarkSky rules, and energy code details you need to specify commercial flagpole lighting with confidence.

What does the U.S. Flag Code require for flagpole lighting?

The U.S. Flag Code requires illumination only when the flag is displayed overnight. The exact language of 4 U.S.C. § 6(a) reads: “It is the universal custom to display the flag only from sunrise to sunset on buildings and on stationary flagstaffs in the open. However, when a patriotic effect is desired, the flag may be displayed twenty-four hours a day if properly illuminated during the hours of darkness.”

Three things the statute does not specify: wattage, lumen output, or fixture type. “Properly illuminated” is a functional standard, not a photometric one. The American Legion, the veterans organization most often cited on flag etiquette, interprets it as a light source sufficient for the flag to be recognizable to a casual observer. For a commercial site, the practical test is simple: stand at the nearest public road or sidewalk after dark. If the flag reads clearly as the American flag, the display is properly illuminated. If the site cannot light the flag reliably, the correct alternative under the Code is to lower the flag at sunset.

Properly illuminated

The standard, in practice

Both flags at this civic entrance read clearly from the street because each pole carries its own top-mounted beacon. That is the functional test the Flag Code implies: the flag stays recognizable through the hours of darkness, every night, without anyone flipping a switch.

See Beacon flagpole lighting

Do state and local codes add requirements?

Local ordinances regulate how you light, not whether you fly. Many municipalities have outdoor lighting ordinances, a number of them patterned on the Model Lighting Ordinance published by the Illuminating Engineering Society and DarkSky International, that restrict upward-aimed fixtures, glare, and light trespass onto neighboring parcels. A ground floodlight aimed up at a flag is exactly the fixture class those ordinances target, so verify local rules before trenching power to the base of a pole. Top-of-pole fixtures that aim light downward onto the flag avoid the conflict entirely; see the DarkSky section below.

Beacon or ground uplight: which is right for a commercial site?

A flagpole beacon is an LED luminaire that mounts at the top of the pole in place of the standard truck-and-finial ornament and lights the flag from a few feet away. A ground uplight is a flood fixture at grade aimed up at the flag from roughly a pole height away. For new commercial installations, the beacon is the professional standard, and the reason is physics, not preference.

Pole-top illumination

The FlagCo External Beacon

Twin LED lamps mount at the ball, directly above the point where the flag flies. The fixture replaces the standard truck-and-finial ornament, so nothing sits at grade waiting to be hit by a mower.

• Rated output800 lumens (1,100 for Plus models)
• Input power11 watts
• PatentU.S. Patent 7,275,495

See the External Halyard Beacon

Ground lighting still has legitimate uses. Some sites want the pole shaft itself washed in light, and some multi-pole displays are designed around grade-level fixtures; FlagCo sells LED uplight kits for those cases. But for the core job, keeping the flag itself illuminated through the night in any wind, the top-of-pole beacon wins on distance, coverage, energy, and ordinance compliance at the same time.

How many lumens does commercial flagpole lighting need?

No law sets a lumen requirement for flagpole lighting. What matters is illuminance on the flag itself, and that depends on the fixture’s distance from the fabric more than its raw output. A top-of-pole beacon rated at 800 lumens fully illuminates a 5×8 ft flag on a 25 or 30 ft commercial pole because the fixture sits at the flag. Lumen charts online recommending 10,000 lumens or more describe ground floodlighting, where most of the beam never touches the fabric; they are not a legal requirement and they do not apply to pole-top fixtures.

When you compare fixtures, insist on both of the numbers below. Rated lamp lumens describe the LED lamps alone. Delivered lumens are what the assembled luminaire actually emits, measured under ANSI/IES LM-79 by an independent photometric laboratory. Delivered output is always lower because the housing and visor absorb and redirect light; that controlled loss is precisely what puts the light on the flag instead of the sky. Most flagpole lighting sellers publish only the bigger number. FlagCo publishes both.

Delivered lumens per ANSI/IES LM-79 luminaire testing at an independent laboratory. Internal Halyard figures are measured with the DarkSky visor installed, the as-installed configuration. Quad and XL large-format models are quoted with project photometrics; contact the factory.

What are the types of commercial flagpole lighting?

Commercial flagpole lighting comes in three forms: top-of-pole beacons matched to the pole’s halyard system, ground-mounted uplights, and solar-powered versions of either. FlagCo manufactures the Beacon line in Acworth, Georgia, with a model family for each commercial pole type. Every Beacon accepts 120V AC, 277V AC, 24V DC, or 12V DC input, runs 3000K warm-white LEDs, and operates dusk to dawn on an integrated photocell.

Standard models carry two top-mounted lamps. Plus models add two down-aimed lamps that raise output to 1,100 lumens for larger flags and fill the zone directly below the fixture, where a flag hangs on calm nights. Internal cam cleat poles use the Internal Halyard Beacon family.

Standard vs Plus

What makes a Plus model a Plus

The External Beacon Plus pairs the ball’s two top lamps with two down-aimed lamps below. That second pair raises rated output from 800 to 1,100 lumens, extends coverage from 5×8 to 10×15 ft flags, and fills the zone straight below the fixture where a flag hangs on a calm night.

• Rated output1,100 lumens
• Input power15 watts
• Max flag10×15 ft

Compare External Beacon models

Fit is determined by the pole’s halyard system and top diameter, not its height. An External Beacon mounts on the standard 1-1/4 inch NPT spindle used by conventional trucks, so it retrofits onto most existing external halyard poles. Internal Halyard Beacons are sized to the pole top diameter. For new construction, FlagCo also packages pole and beacon together as Illuminator Series flagpoles; the two ship as a matched package and the installer mounts the beacon during pole erection. All Beacons are Intertek (ETL) listed to U.S. and Canadian standards and rated for minus 22°F to 122°F.

What makes flagpole lighting DarkSky compliant?

DarkSky International approves outdoor fixtures that control light pollution, and for flagpole lighting the approval turns on one thing: whether the fixture puts light anywhere but the flag. DarkSky approval is per model, not a blanket claim. FlagCo’s External, External HD, 6.5″ and 8″ Internal Halyard, 6.5″ and 8″ IH Plus, and Outrigger Beacons are DarkSky approved when specified with the integrated visor accessory. The higher-output External Plus, HD Plus, Quad, and XL models trade the approval for more light on bigger flags.

Without visor (not DarkSky approved)

With DarkSky visor

DarkSky configuration

The visor is what earns the rating

Same Internal Halyard fixture, two configurations. The Beacon Visor shields each lamp so the beam lands on the flag instead of scattering upward, and that shielding is what earns the per-model DarkSky approval. FlagCo’s published LM-79 photometrics for the Internal Halyard Beacon are measured with the visor installed, so the delivered numbers describe the fixture as actually installed.

• BUG ratingB0-U0-G0 per IES TM-15 (with visor)
• UplightU0: zero measured uplight
• CCT / CRI3000K warm white, 85 CRI

See the Beacon Visor

For sites governed by a lighting ordinance, the stronger technical claim is the BUG rating. With the visor installed, FlagCo Beacons rate B0-U0-G0 per IES TM-15: zero backlight, zero uplight, zero glare in the rated ranges, confirmed in the LM-79 reports, which show maximum candela at 90 degrees of exactly zero. U0 is the number a lighting reviewer checks for full-cutoff and dark-sky ordinance compliance, and it applies across the Beacon line whenever the visor is installed, including models that do not carry the DarkSky name. If your municipality requires DarkSky-approved fixtures specifically, specify an approved model with the visor and say so on the schedule.

Does flagpole lighting count against the energy code allowance?

Under the International Energy Conservation Code, it does not have to. IECC Section C405 exempts “lighting used to highlight features of art, public monuments, and the national flag” from the total exterior connected lighting power calculation, provided that lighting is controlled independently of the other exterior lighting. This exemption appears across the 2015, 2018, and 2021 editions. In practice: a Beacon on its own photocell does not consume the wattage allowance your project needs for parking, walkway, facade, and entrance lighting.

At 10 to 15 watts, a FlagCo Beacon barely registers in an energy calculation anyway, but the exemption matters on power-constrained projects and it is the correct code citation to hand your electrical engineer. Two cautions. First, the exemption depends on independent control, which is why FlagCo specifies photocell operation for the flag lighting circuit. Second, the equivalent exemption under ASHRAE 90.1 is not a given; if your project’s compliance path is 90.1 rather than the IECC, have the engineer of record verify the exempt application list in the adopted edition. Always defer to the code edition and amendments your jurisdiction has adopted.

When does solar flagpole lighting make sense?

Solar is the right call when trenching power to the pole is impractical or expensive: remote sites, finished hardscapes you do not want to cut, monument and memorial settings, and campuses with sustainability mandates. Every FlagCo Beacon model accepts 12V DC input, and FlagCo builds commercial solar power packages, at 50 and 100 watts, that pair a pole-mounted panel with a charge controller and a lithium iron phosphate (LiFePO4) battery to run the beacon dusk to dawn on the integrated photocell.

Off-grid power

Commercial solar power package

A pole-mounted panel, MPPT charge controller, and LiFePO4 battery power a 12V DC Beacon with no trenching and no electrician on the pole circuit. Available in 50 watt and 100 watt packages sized to the beacon model and site.

Browse solar lighting packages

Be honest about the constraint: solar performance is set by the sun the panel actually receives. A panel shaded by the building or trees, or a site with long stretches of overcast winter weather, needs a larger panel and battery than the same beacon in full southern exposure. Tell us the site’s location and shading when you request pricing and we will size the package accordingly rather than guessing. Where reliable grid power is already at the pole, hardwired 120V or 277V AC remains the simplest configuration, and at 10 to 15 watts the operating cost is trivial either way.

What does commercial flagpole lighting cost?

FlagCo prices Beacon systems per project rather than publishing list prices, because the right configuration depends on pole type, top diameter, flag size, power path, and accessories. Requesting pricing through any Beacon product page takes about a minute. What we can publish are the factors that actually move the number, and the operating math, which is where beacons quietly pay for themselves.

• Fixture family. Standard models light flags to 5×8 ft; Plus, Quad, and XL models step up output for flags to 30×50 ft.
• Power path. Reusing an existing pole circuit is the cheapest. Trenching new conduit is usually the largest single line item on a retrofit, and it is the cost the 12V solar package exists to delete.
• Electrician scope. A beacon is a 10 to 15 watt fixture on one circuit; a multi-head uplight array multiplies both the fixture count and the wiring.
• Pole compatibility. External Beacons retrofit onto the standard truck spindle. Internal halyard retrofits are sized to the pole top; new construction is simplest as an Illuminator package.

Energy figures are straight math from measured input wattage: 11 W x 12 hr x 365 = 48.2 kWh. Metal halide range shown for the lamp alone at the same duty cycle; ballast losses add more.

Which lighting setup fits which facility?

The right specification follows from what each facility type actually deals with: display protocol, vandalism exposure, ordinance environment, and who maintains the site. These are the configurations we most often build for each.

Hospitality

Around-the-clock display, zero staff attention

Hotels fly the flag 24 hours a day, so the lighting has to work every night on its own. A pole-top beacon on its integrated photocell runs dusk to dawn automatically, and the 3000K warm white sits comfortably alongside typical entrance lighting instead of fighting it.

Explore Illuminator pole and beacon packages

Frequently asked questions