Written Material

Lights On – the non-technical guide to battery power when the grid goes down” 2017

Achieving Energy Independence – one step at a time” 2000

Jeff Yago


Mr. Yago is a licensed professional engineer and certified energy manager with over 40 years’ experience in designing and troubleshooting emergency backup and solar power systems for residential, commercial, and institutional projects throughout the U.S. including high security military facilities in other countries.

In his spare time, he is an organist who plays events and at his church.

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