How to calculate kiln firing cost

Basic energy cost is rated power × time × price per kWh × heating duty factor. The factor is an estimate unless the controller or meter reports actual energy.

Procedure

1. Basic energy cost is rated power × time × price per kWh × heating duty factor. The factor is an estimate unless the controller or meter reports actual energy.
2. For a service price also include element wear, shelves, posts, ventilation, labour, failed-load risk and studio overhead.
3. Allocate cost by successful piece or occupied volume, not only item count when sizes differ widely.

What to record in CeramikaTo

• Work or sample code and date.
• Material, batch, cone, schedule and position.
• Observation separated from hypothesis.

Common mistakes

• Changing several variables at once without a control sample.
• Missing batch, cone or kiln-position information.
• Treating an estimate as a guarantee.