Siemens Energy One Supplier Portal

The One Supplier Portal (OSP) is your digital entry point for collaborating with Siemens Energy. It streamlines procurement, logistics, and quality processes – making transactions faster, communication clearer, and workflows more efficient. With OSP you can manage your key supply chain activities, from purchase planning, managing orders and deliveries, tracking project milestones, to ensuring quality and compliance.

OSP is more than just another tool – it’s our long-term strategy for supplier collaboration. While it’s currently in its early stages, new features are added continuously, and over time, OSP will become the single platform for all supplier-related activities and communication. The goal is to replace fragmented systems with one streamlined solution that supports every step of the supply chain. Be part of this transformation and join us on the path toward smarter, more connected partnerships.

The rollout of OSP began in 2024 and will happen gradually. Our long-term vision is for all suppliers to manage their core supply chain activities – such as e.g. order tracking, milestone confirmation, quality documentation, and compliance – exclusively through OSP.

While OSP is still in its early stages, it’s not just another tool. It represents a strategic shift toward a unified, future-ready solution that will eventually take over functionalities from other platforms.

You don’t need to take any immediate action. Our team will contact you directly when your organization is affected. We’re handling registration and data migration for you in the background – your only task will be to log in once invited.

Please note: Access to OSP is only possible if your email address has been registered in the system. If you would like to request access, please contact ospsupport@siemens-energy.com.

To work with Siemens Energy via the One Supplier Portal (OSP), please log in using your registered supplier account. Once logged in, you can access all relevant applications, tasks, and support services in one central place.

First‑time login to the One Supplier Portal (OSP):

You will receive an email with your account activation link.

Click the link and scan the QR code using an authenticator app (e.g. Microsoft Authenticator) to set up two‑factor authentication.

Enter your name, set your password, and accept the terms & conditions to activate your account.

Once activated, click Continue to access the One Supplier Portal.

For future logins, enter your password and choose email or authenticator app as your twofactor authentication method.

Important to know

The access link only works for the email address that received the invitation

Please check your spam folder if you cannot find the email

For security reasons, accounts that are not used for 6 months will be deactivated

To keep your account active, please log in regularly

For further and more detailed information please open our Login Manual:

To support you in your daily work with the One Supplier Portal (OSP), we have developed the Training and Support Hub that brings training and support together in one central place.

Learning & Training

The Hub provides easy access to step‑by‑step manuals and short training videos, helping you quickly find the information you need while working in OSP, exactly when you need it. All learning content is designed to support you in understanding processes and completing your tasks efficiently.

Get Support

Beyond training content, the Training and Support Hub also offers direct access to support. Using the integrated “Create support ticket” button, you can easily submit support requests directly from OSP. In addition, a dedicated FAQ section provides quick answers to common questions, helping you resolve issues faster without leaving the portal.

If you have any questions or problems, contact us via E-Mail: ospsupport@siemens-energy.com.

How to access the Training and Support Hub

You can access the Training and Support Hub at any time by clicking the support icon in the upper right corner within the One Supplier Portal.

OSP - One Supplier Portal

Letter of Mirko Einert, Head of Digital Transformation Office

Key facts

Supplier journey

OSP Supplier Journey

How to access / Login (first)

First Login to OSP

Training and Support Hub