Equestrian
Initiative
One sector. Different activities. One responsibility.
SEI is an independent, evidence-based sustainability certification standard created specifically for the equestrian world — putting horse wellbeing at the centre while measuring environmental, social and economic responsibility.
You select what you do!
SEI is a modular Certification Programme
You are assessed only against the activities you actually carry out. A riding school is not assessed against breeding requirements. A stud is not assessed against event requirements. A competition organiser is not asked questions designed for a therapy centre or product supplier.
This makes certification focused, proportionate and straightforward — without overwhelming organisations with requirements that have nothing to do with their activities.
The SEI Standard combines a common Core Mandatory Layer with the Activity Modules that match your organisation.
Start your SEI journey
Complete the registration form and the SEI Team will contact you to confirm your activities, identify the applicable Activity Modules and guide you through the next steps.
The future starts here
Stay connected with the future of equestrianism.
SEI
SEI — Sustainable Equestrian Initiative. An evidence-based sustainability certification standard created for the equestrian world, with horse wellbeing at its centre. Established 2023, The Netherlands.
SEI | Sustainable Equestrian Initiative
Address: Nicolaes Maestraat 2, Office 213
1506 LB Zaandam, The Netherlands
Telephone: 0031-(0)85-301 0650
Dutch Chamber of Commerce: 67691951
EU VAT (VIES): NL857133147B01
© 2026 Sustainable Equestrian Initiative. All rights reserved.
Responsible equestrianism. Proven for the future.