If you can't see the pushpins, Refresh your browser, they usually load on the 2nd attempt. You should see pushpins in blue, green and salmon pink.
The data was provided in a spreadsheet, and the balloon layout is a simple enough job of HMTL layout, this is just a working example.
Enernex Smart Meter Data for California Energy Commission
North American Smart Meter Initiatives categorized by type.
Smart Grid Initiatives