About this course

The CPUC recently released its revised Proposed Decision (PD) on the state’s “NEM-3” successor net metering tariff, establishing an entirely new “Net Billing” tariff framework. The new methodology reduces the value of exported energy by roughly 75% compared to NEM-2 levels and completely decouples the value of imports from exports. This will considerably erode the value of solar-only projects and create a strong price signal for pairing energy storage with solar.

The ETB product and engineering teams have refactored our backend savings engine to precisely account for ACC hourly export values. This will enable users to precisely model the value of exports, total bill savings, and the overall project economics of any NEM-3 project. We will demo this new functionality. Additionally, we will share all of our latest insights on how the new NEM-3 tariff will affect the economics of solar and storage projects. We will review residential and commercial scenarios in all 3 IOU territories.

Learning Objectives:
- Review results for real-world residential and commercial NEM-3 projects.
- Summarize the economics of (1) standalone solar, (2) solar + storage, and (3) standalone storage projects.
-Discuss the impact of instantaneous netting.
-How to account for ACC Plus glidepath adders.
-Discuss implications for V-NEM and NEM-A projects.
-Overview ETB’s best practices for clearly communicating the mechanics and savings of NEM-3 projects to end customers.
-We will unveil our newly designed NEM-3-specific proposal document template.

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Course outline

1 module • 4 assignments • 1:04 hours of video lectures

Module 1 • 2 assignments
What does CA's NEM-3 “Net Billing” Tariff mean for solar and storage economics?

  • What does CA's NEM-3 “Net Billing” Tariff mean for solar and storage economics? (01:04:04 hours)
  • California's New NEM-3 "Net Billing" Tariff Slide Deck (.pdf)


  • Adam Gerza

    VP Business Development, Energy Toolbase
    View profile

    Adam Gerza is the VP of Business Development at Energy Toolbase, an industry leading software platform that specializes in modeling and proposing the economics of solar and energy storage projects. He has worked in the solar industry for over 12 years in various project development and policy related roles. Prior to solar, Adam traded natural gas commodity products for... Learn more

Frequently asked questions

How does this course work?
This is a free course. Enroll today and get access to all of the materials instantly. The lecture video and other materials are available any time.
How long do I have access to the materials?
For free courses there is no guarantee for how long the course materials will be available.
Is there a certificate of completion?
Certificates of completion are only provided to HeatSpring Membership subscribers. This course has not been approved by any credentialing organizations (NABCEP, AIA, USGBC etc) for Continuing Education Credits (CEUs). This course is for self education purposes only and completion does not indicate a level of professional expertise or credential.
Can I register multiple people?
Yes, this is a free course so you can share this page with other people from your team.


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