Shorter, more bite-sized things for the Starter Pack:

• Smart Grid intro @ smartgrid.gov
• Venture Scanner’s Energy Technology map
• Venture Scanner’s Energy Technology Innovation Quadrant

Longer stuff:

• from Level 10
  • U.S. Energy Markets 101: How Electricity Markets Work
  • Introduction to Virtual Power Purchase Agreements for Corporations
• Gretchen Bakke, "The Grid," of course (book)
• Shalanda Baker, "Revolutionary Power: An Activist's Guide to the Energy Transition" (book)
• FERC Energy Primer 2020—a bit long for the Starter Pack, but good for the longer list.
• Dept. of Energy, United States Electricity Industry Primer (2015)
• US Electricity Markets 101
• The National Potential for Load Flexibility
• Peter Fox-Penner, Smart Power (book)
• Last Week Tonight with John Oliver, The Power Grid (video, 23m)—more about transmission lines than energy markets, but there’s some grid basics presented in an accessible way.

Podcasts:

• The Energy Gang
• Grid Talk @ smartgrid.gov
• The Interchange
• The Energy Transition Show