OEE vs TEEP — What's the Difference and When to Use Each

Published 12 Feb 2026 · 5 min read

OEE and TEEP both measure manufacturing equipment productivity — but they ask fundamentally different questions. OEE asks "how well did we use the time we planned to run?" TEEP asks "how much of the total available calendar time are we actually producing good parts?" Knowing when to use each changes how you interpret your capacity.

OEE — What You Probably Already Track

OEE (Overall Equipment Effectiveness) measures efficiency within scheduled production time:

A machine that runs 2 shifts per day, 5 days per week, at 85% OEE is highly efficient — but it is only running for 80 hours per week out of 168 hours available in total. OEE tells you nothing about the 88 hours it isn't scheduled to run.

TEEP — The Bigger Picture

TEEP (Total Effective Equipment Performance) extends OEE by including all calendar time as the denominator:

Or equivalently:

A machine with 85% OEE that operates 2 shifts per day, 5 days per week has:

• Utilisation = 80 hrs ÷ 168 hrs = 47.6%
• TEEP = 85% × 47.6% = 40.5%

This 40% TEEP figure represents what fraction of theoretical 24/7 capacity is being turned into good parts. It's a very different picture from 85% OEE.

OEE vs TEEP Comparison

When to Use OEE

OEE is the right metric for daily operational management:

• Weekly production team reviews — is OEE improving?
• Root cause analysis — which loss type is biggest this week?
• Downtime reduction initiatives — tracking impact of maintenance improvements
• Shift vs. shift performance comparison
• Machine vs. machine comparison on the same production schedule

When to Use TEEP

TEEP is the right metric for strategic capacity planning:

• "Should we invest in a second machine or improve OEE on the existing one?" — if TEEP is 35%, you likely have capacity room before buying more equipment
• "Can we take on a new customer contract without capital investment?" — TEEP shows how much headroom exists by adding shifts or weekends
• "What is our true maximum capacity?" — TEEP denominator is 24/7/365 perfect output
• Annual capacity strategy and capex planning

The Practical Implication

A plant with 80% OEE may have very little room to improve efficiency within its current schedule. But if its TEEP is 32%, it has enormous capacity available by adding shifts or weekend production — before buying any new equipment. TEEP reveals the strategic option; OEE measures how well you're executing the current plan.

Use both. OEE for operations, TEEP for strategy.