Getting Started

• Introduction to Exchanging Data
• Testing Web Services
• Connection and Sharing
• Web Services API Terms of Use

Other Resources

• Offering data exchange services to your customers
• ENERGY STAR Training
• Subscribe to the Web Services Mailing List
• RESTClient for Mozilla Firefox
• Advanced REST client Application for Google Chrome
• Full List of Reporting Metrics
• Full List of Portfolio Manager Alerts
• Zip Code to Utility Mapping for utilities offering aggregated data

The Application Programming Interface (API)

• Comprehensive Resource Documentation
  • Live Environment -- Running Version 24.0
  • Test Environment -- Running Version 24.0
    • Using the New Portfolio Manager Test User Interface
• Error Codes
• Known Issues
• Release Notes
• Frequently Asked Questions

Important Dates

• Major Releases
  • The 25.0 release will NOT be accompanied by an announcement email or webinar. Please closely review the details of the FAQ below to ensure all necessary changes are implemented in your API integration in advance of the live release on August 24, 2025.
  • Web Services 25.0 Beta Scheduled for June 29, 2025 at 8am EST
  • Web Services 25.0 Live Scheduled for August 24, 2025 at 8am EST
  • FAQ: What changes will be made as part of the August 2025 web services 25.0 release?
• Standard Weekly Maintenance
  • Sunday from 8PM EDT to midnight EDT
  • Monday through Thursday from 10PM EDT to 11PM EDT
  • Regular procedures must be performed on EPA's ENERGY STAR systems to ensure they are properly maintained. Many of these maintenance procedures require interruption of services for the duration of the procedure. During the scheduled maintenance window you may experience anything from slow response, limited access, or no connectivity, or you may experience no interruption. Scheduled use of the system should be avoided during these windows.