Simple, transparent pricing
Start on the Free plan with no credit card. Pay only when you need professional sizings — the larger machines a real project requires. Buy credits in a bundle and spend them whenever you like: credits never expire. All prices are billed excluding VAT.
Single
€10
- 1 professional sizing
- Credits never expire
Professional
€40
- 5 professional sizings
- Credits never expire
Studio
€120
- 20 professional sizings
- Credits never expire
| Plan | Price (excl. VAT) | Professional sizings | Availability |
|---|---|---|---|
| Free | €0 | Unlimited free sizings below the 10 kW threshold (5 kW for screws) | No credit card |
| Single | €10 | 1 professional sizing | Credits never expire |
| Professional | €40 | 5 professional sizings | Credits never expire |
| Studio | €120 | 20 professional sizings | Credits never expire |
What is a professional sizing?
A sizing whose turbine nominal power exceeds its threshold: 10 kW for Pelton, Francis and Kaplan, and 5 kW for the Archimedean screw. Anything at or below it is free, with no limit on the number of sizings; only the larger machines a real project requires consume one credit.
Do credits expire?
No — credits never expire. Buy a bundle once and spend it whenever you need a professional sizing, with no time limit. Your account itself has an unlimited lifetime; after 12 months of inactivity it is frozen, and after a further 12 months it is removed.