What One Point of OEE Is Worth: The Full Methodology

Every improvement discussion should be conducted in an exchange rate: euros or dollars per OEE point on this specific line. Here is the formula, the honest inputs, the worked examples, and the mistakes that inflate the number.

Quick answer: One OEE point on a line is worth: planned production hours per year × demonstrated rate (units/hour) × contribution margin per unit × 1%. A line running 5,760 planned hours at 12,000 units/hour and €0.06 contribution is worth about €41,000 per point per year. The number is line-specific by construction, which is exactly why it beats every generic downtime-cost statistic: it is your schedule, your speed, your margin.

The formula, and why each input is chosen

Planned production hours, not calendar hours: OEE already lives inside planned time, so the point's value does too. Using 8,760 calendar hours flatters the number and is the most common inflation. Demonstrated rate, not nameplate: the sustainable best the line has actually shown per product.

Nameplate rates nobody has run in years turn the calculation into fiction. Contribution margin per unit, not price and not full cost: the money that one more unit actually adds, from your finance team, for the SKU family that fills the line's hours.

Worked examples across archetypes

A detergent filling line: 3 shifts × 8 hours × 5 days × 48 weeks = 5,760 hours; 12,000 units/hour demonstrated; €0.06 contribution. One point = 5,760 × 12,000 × 0.06 × 1% ≈ €41,500/year. A tissue converting line at 9,000 units/hour and €0.04: one point ≈ €20,700.

An SMT line is better expressed through the same logic anchored to quoted cycle time: at 42 seconds quoted and €1.80 contribution per assembly, one point of the line's planned time ≈ 5,760 × (3600/42) × 1.80 × 1% ≈ €8,900, and the quote-vs-actual gap usually dwarfs it.

The spread across these examples is the argument: generic industry figures cannot price your line.

The two honesty rules

Demand-limited capacity is cost avoided, not revenue gained. If the recovered hours have no orders behind them, their value is the overtime, weekend shifts or capex they displace, and the ledger should label it so; a CFO will notice the difference even when the slide does not. The value of a point is not the value of every point. Recovering the first points (chronic micro stops, changeover overrun) is cheap; the last points fight physics.

Use the per-point value to rank interventions, not to promise that 15 points × €41k is sitting in an envelope.

What to do with the number

Three uses, in rising order of leverage. Prioritization: every proposed improvement gets an expected impact in points, multiplied into currency, and the ranking argument ends. Capex challenge: before pricing a new line, price the gap to your archetype's top quartile on the lines you own; recovered points are capacity without concrete.

And negotiation: maintenance windows, changeover standards and schedule decisions all become tractable when both sides argue in the same currency, which percentages never were.

Frequently asked questions

How much is a 1% OEE improvement worth?

Line-specific by construction: planned hours × demonstrated rate × contribution per unit × 1%. Typical FMCG lines land in the tens of thousands of euros per point per year; compute yours in two minutes with real inputs rather than borrowing anyone's average.

Why not use revenue per unit instead of contribution?

Because one more unit does not bring its full price: materials and variable costs come with it. Contribution is what an incremental unit actually adds, which is what recovered capacity produces.

Where do generic downtime-cost statistics go wrong?

They average across industries, anchor to revenue rather than contribution, and often count calendar time. They are useful for headlines and useless for your line's decisions.

Should operators see the per-point value?

Yes, framed correctly. Crews rally around a number that prices the line's problem; they resist a number that prices the people. Publish the exchange rate next to the loss Pareto, pair it with the written commitment that it ranks losses and never individuals, and the morning meeting starts arguing about the right things.

How does this connect to OEE targets?

Set targets from your archetype's quartiles, then price the gap with this formula. Points make targets comparable; currency makes them decidable.

Our OEE calculator runs this exact methodology on your inputs and shows the decomposition by loss category. For target-setting, see what a good OEE actually is, by archetype.