LED Cost

What Drives Cost Per Unit in LED Luminaire Manufacturing and How to Quote It

A money-first breakdown of what actually drives cost per LED fixture, how to build a quote that holds, and the estimating mistakes that erode margin.

In a typical mid-volume LED luminaire, bill of material dominates cost, running 55 to 70 percent of ex-works price. The driver is usually the single largest line at 18 to 30 percent of BOM, followed by the LED board at 15 to 25 percent, housing and heatsink at 12 to 20 percent, and optics, gaskets, and hardware filling the rest. Before touching labor, price the driver and board from live distributor quotes at your actual annual volume, because moving from 1,000 to 25,000 units per year commonly drops driver unit cost 20 to 35 percent. The LED Board Assembly Cost calculator separates board material from placement labor so you do not double-count.

Direct labor is smaller than most estimators expect, typically 6 to 12 percent of unit cost, but it is where quotes drift. Convert your assembly takt into labor cost: at a 30 second takt with 4 operators at a fully burdened 28 dollars per hour, direct labor is (4 x 28) / 3,600 x 30 = 0.93 dollars per fixture. Add SMT board assembly labor separately, since placement and reflow are machine-paced, not takt-paced. The mistake is quoting hand-assembly labor off an ideal cycle time and ignoring line balance loss, which routinely adds 15 to 25 percent to the theoretical figure.

Test and burn-in are real, recurring costs that estimators frequently bury or omit. If you soak 30 percent of units for 12 hours, allocate chamber depreciation, energy, and floor space across only the tested units. A chamber drawing 3 kW for 12 hours at 0.12 dollars per kWh is 4.32 dollars of energy, spread over its slot count. Photometric testing adds cost too: a goniophotometer scan tying up a 40 dollar per hour bench for 25 minutes is 16.7 dollars per tested unit, so a 6 percent sampling rate adds about 1.00 dollar per fixture shipped. The Burn-In Test Capacity and Photometric Test Workload calculators feed these allocations.

Scrap and rework compound through the value stream, so cost defective units at the stage they fail, not at material cost. A driver that fails burn-in has already absorbed board assembly labor, housing, and 12 hours of soak, so a 2 percent burn-in fallout on a 40 dollar unit costs far more than 2 percent of the driver price. Estimate scrap cost as failure rate multiplied by accumulated cost at the failure point. First-pass yield of 96 percent sounds fine until you note that reworked units consume 20 to 45 minutes of technician time each, often 12 to 20 dollars, which few quotes carry.

Overhead and coating are easy to underquote. Powder coating or anodizing a housing carries setup, consumables, and reject cost; a color change on a powder line can cost 30 to 90 minutes of purge and waste, which must be amortized over the run length. The Housing Coating Cost calculator ties finish cost to batch size, so a 200 piece run absorbs setup far worse than a 2,000 piece run. Apply manufacturing overhead as a rate on direct labor or machine hours, commonly 120 to 200 percent of direct labor, and never fold profit into overhead where it hides from margin review.

Two forward-looking costs belong in the quote even though they land later: driver failure and warranty returns. Price expected field failure explicitly. If drivers fail at 0.8 percent over a 5 year warranty and each field replacement costs 85 dollars in parts, labor, and freight, the reserve is 0.68 dollars per unit shipped. The Driver Failure Cost and Warranty Return Rate calculators size this reserve. Estimators who quote at zero warranty reserve win the bid and lose the program, because a 1.5 percent return rate on a 60 dollar fixture can erase 4 to 6 points of margin.

Assemble the quote as a stack, not a single markup. Sum BOM, direct labor, SMT, test allocation, scrap, coating, and overhead to reach fully burdened cost, then add a warranty reserve, then apply margin. Cross-check the result two ways: cost per thousand lumens should land in a sane band for the segment, and material as a percent of price should sit near your historical 55 to 70 percent. The Retrofit Kit Margin and Fixture Packaging Cube calculators catch the last leaks, since a bulky fixture that ships 6 per carton instead of 12 can double freight per unit and quietly turn a 15 percent margin into 9.

Published 2026-07-01.