Calculate estimated energy and cost savings for energy- and water-efficient product categories using interactive calculators on Energy.gov, provided by the Federal Energy Management Program or ENERGY STAR^®.

These guides present facility and energy managers with general project planning guidance as well as financial payback metrics for the most common energy efficiency measures, providing a practical roadmap for effectively planning and implementing performance improvements for existing buildings.

• Office buildings
• Retail buildings
• Grocery stores
• K-12 schools
• Healthcare facilities

The ENERGY STAR Portfolio Manager is a secure, online tool that allows you to measure and track multiple energy use metrics.

• Gather data using the provided data collection worksheet.
• Data from the worksheet can either be manually entered or uploaded via spreadsheet or online web service.

Sign up for Watt's Happening, the Ameren Illinois Business Customer Newsletter.

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Click HERE to see our past Watt's Happening newsletters.

Additional tools and resources:

• The Energy Analyzer is a tool that can show you how and when your facility uses the most energy. Find out how you can save energy and money with this free tool from Ameren Illinois!

Visit our Education & Training webpage to learn about educational opportunities available to Ameren Illinois business and non-profit customers. From live training webinars and classroom events to our archive of past training webinars, our events are designed to help you learn about a variety of energy efficiency topics from industry experts.

Learn how business customers across Illinois are using less energy and spending less money through Ameren Illinois' energy efficiency programs by visiting our Customer Case Study library.