Start with measured kg/day
If representative daily loads remain within the 50 kg/day rating, the 50 kg class is the logical starting point. If normal loads are above that band, move to the 100 kg class rather than planning routine overloads.

Published specifications show the practical step-up
The published 50 kg model is approximately 1500 × 1050 × 1400 mm with 4.5 kW connected load. The 100 kg model is approximately 1830 × 1240 × 1625 mm with 6.0 kW connected load. Final electrical provision and clearances still need site confirmation.
| Published field | 50 kg/day | 100 kg/day |
|---|---|---|
| Capacity | 50 kg/day | 100 kg/day |
| Connected load | 4.5 kW | 6.0 kW |
| Approx. dimensions | 1500×1050×1400 mm | 1830×1240×1625 mm |
| Decision trigger | Measured load within 50 kg band | Normal/peak load exceeds 50 kg band |
Peak days can decide the answer
A site averaging close to the 50 kg limit may have little operating margin on event days. Record peak loads before deciding. The answer may be a larger machine or a documented peak-management plan, depending on the site.
Space and power should be checked at the same time
Moving from 50 to 100 kg changes more than purchase price. Check electrical supply, service access, material handling and curing space before finalising the capacity.
When the next capacity is worth considering
Moving from a 50 kg/day class to a 100 kg/day class should be justified by measured load and recurring peaks, not by a desire to buy “extra capacity” without checking the site. The larger machine also changes connected load, body dimensions, access requirements and capital cost. If the measured stream sits near the smaller machine’s rating on ordinary days, the larger class deserves a serious comparison.
- Compare normal-day load with each published rating.
- Check event or weekend peaks.
- Confirm the larger model fits the delivery and operating route.
- Compare connected load before approving electrical work.
Capacity is a system decision: kg/day, power and space move together.
When the question becomes model-specific
This guide stays general. For exact figures on a particular machine, these published pages from the COMPOSTO range are the reference.
Applying this to a real site?
Send your site type, city and measured daily wet waste. The COMPOSTO technical team replies with the capacity and checks worth doing next.