# Installation Requirements

To install and use TIBCO Substation ES™, you must have TIBCO Rendezvous® for z/OS or TIBCO Enterprise Message Service™ (EMS) activated within your network. You must also load and configure the appropriate z/OS software before activating Substation ES.

For details, see the following requirements:

- Storage Requirements
- System Software Requirements
- Protocol Requirements
- User Profile Requirements
- Language Environment Requirement
- General Substation ES and Operating System Requirements
- Secure Keys

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