How do you calculate panel throughput?

Divide completed panels by productive runtime for the raw rate, then multiply by efficiency. With 1,200 panels over 8 hours, the raw rate is 150 per hour; at 90% efficiency the effective rate is 135 per hour.

What's the difference between raw and effective throughput?

Raw throughput is output divided by runtime, assuming perfect conditions. Effective throughput applies an efficiency factor for downtime, test holds, and rework — the 135 units per hour you can actually schedule against versus the 150 raw.

What is a good panel line efficiency?

World-class assembly lines run 85% or higher effective efficiency. The 90% in the example is strong; below 70% usually points to chronic downtime, material starvation, or a bottleneck station worth investigating.

How do I use throughput to set a lead time?

Divide the order quantity by the effective throughput, not the raw rate. Using 150 instead of 135 per hour would under-quote your lead time by roughly 10% and put the ship date at risk.

Why is my raw throughput higher than what I can deliver?

Because raw throughput ignores efficiency losses. Breaks, test failures, retorquing, and station starvation all cut into it, which is exactly why the effective rate multiplies by an efficiency below 100%.

Does throughput account for quality?

Only if your efficiency factor includes first-pass yield. If it captures uptime alone, panels that fail test and get reworked will still inflate your apparent output — fold yield into the efficiency input.

Switchgear, Panelboards & Electrical Distribution calculator

Panel Throughput Calculator

Panel Throughput measures how many finished panelboards or switchgear assemblies your line actually turns out per hour, both at raw pace and after accounting for real-world efficiency losses. Production planners and line supervisors use it to set realistic build schedules, size labor against an order backlog, and spot when a line is underperforming its rated capacity. In panel assembly, quoting a lead time off raw throughput ignores the breaks, test holds, and rework that always shave real output. This calculator separates the theoretical rate from the effective one you can actually promise a customer.

What this calculator does

Panel Throughput measures how many finished panelboards or switchgear assemblies your line actually turns out per hour, both at raw pace and after accounting for real-world efficiency losses.
Use it when panel throughput in switchgear, panelboards and electrical distribution is being committed and you need a throughput number you can defend.
Divides completed output by productive runtime for raw throughput, then multiplies by an efficiency factor to give effective panels per hour.

Formula used

Raw panel throughput = completed output ÷ runtime
Effective panel throughput = raw throughput × efficiency

Inputs explained

Panels completed in the shift:
Productive assembly runtime:
Line efficiency (uptime and yield):

How to use the result

Use it to convert a shift's output into a per-hour rate for scheduling, capacity planning, or comparing line performance across days.
A single efficiency percentage bundles uptime, yield, and pace together; diagnosing why throughput is low requires breaking those losses apart.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
Industrial electricity averages 8.66 cents per kWh across the U.S. (EIA, Apr 2026), up 5.5% from a year earlier. Energy-intensive steps carry this directly into unit cost.
On-highway diesel averages $4.58 per gallon this week (EIA), trending down over recent periods. Truck tonnage is up 3.4% year over year (ATA via FRED).
The U.S. has 21,668 machinery manufacturing establishments employing about 1,086,146 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate panel throughput? Divide completed panels by productive runtime for the raw rate, then multiply by efficiency. With 1,200 panels over 8 hours, the raw rate is 150 per hour; at 90% efficiency the effective rate is 135 per hour.
What's the difference between raw and effective throughput? Raw throughput is output divided by runtime, assuming perfect conditions. Effective throughput applies an efficiency factor for downtime, test holds, and rework — the 135 units per hour you can actually schedule against versus the 150 raw.
What is a good panel line efficiency? World-class assembly lines run 85% or higher effective efficiency. The 90% in the example is strong; below 70% usually points to chronic downtime, material starvation, or a bottleneck station worth investigating.
How do I use throughput to set a lead time? Divide the order quantity by the effective throughput, not the raw rate. Using 150 instead of 135 per hour would under-quote your lead time by roughly 10% and put the ship date at risk.
Why is my raw throughput higher than what I can deliver? Because raw throughput ignores efficiency losses. Breaks, test failures, retorquing, and station starvation all cut into it, which is exactly why the effective rate multiplies by an efficiency below 100%.

Last reviewed 2026-05-12.