About this course

This free course is comprised of two lectures.

The first covers 2014 National Electrical Code (NEC) changes for commercial solar projects. The second discusses cost-effective design for large-scale solar systems. The lectures are presented by SolarPro Technical Editor Ryan Mayfield, a veteran solar installer.

Ryan is the best at what he does, and we're proud to make these targeted lessons available to solar professionals.

Ready To Sign Up Today? Click Here to Enroll

Course outline

1 module • 8 assignments • 2:00 hours of video lectures

Module 1 • 5 assignments
2014 NEC Code Changes + Cost-Effective Megawatt Design

This module contains recordings of recent lectures presented by Ryan Mayfield as well as downloadable PDF copies of his presentation slides. You can re-watch the videos as many times as you like. We also encourage you to post questions and discuss the content with your classmates.

  • "2014 NEC Code Changes" slides (.pdf)
  • Part 1 - 2014 NEC Code Changes that Impact Commercial Solar Design (31:52 minutes)
  • Part 2 - 2014 NEC Code Changes that Impact Commercial Solar Design (27:43 minutes)
  • "Cost-Effective Megawatt Design" slides (.pdf)
  • Cost-Effective Megawatt Design (01:01:22 hours)


  • Ryan Mayfield

    Founder & CEO, Mayfield Renewables
    View profile

    Ryan Mayfield has been working in the renewable energy field since 1999 and is the President of Mayfield Renewables (formerly Renewable Energy Associates), a consulting firm providing design, support and educational services for electrical contractors, architectural and engineering firms, manufacturers and government agencies. Ryan served as Photovoltaic Systems... 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 group.


Based on 194 reviews
students have taken this course

Easy to understand


I must say it was a game-changer for me. The comprehensive insights provided not only deepened my understanding of solar technology but also offered practical guidance on the intricacies of the installation process.

Ravi Kumar
Keith A

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