Jay Stein is focused on expertise development, research skills development, quality control, new product development, and technology assessment. Jay is a specialist in HVAC, high-tech industrial process technologies, and the IT industry; he works closely with the E Source Technology Assessment Service. During his tenure at E Source, he has served as project director for several high-profile reports and market research studies, and is a regular contributor to the annual Tech Roundup web conference.

Over Jay’s nearly 40-year career in the twin fields of energy efficiency and renewable energy, he has designed utility demand-side management programs, advanced HVAC systems, and solar thermal collectors. He has also authored and coauthored hundreds of technical papers, magazine articles, and book chapters. Before joining E Source in 1996, Jay cofounded E-Cube Inc., an energy consulting firm specializing in building energy analysis and commissioning. He has a BS in agricultural engineering from Rutgers University.

Content by this author

What the Top 20 Technologies and Trends of 2018 Tell Us to Expect for 2019

Jay Stein
February 4, 2019

For the energy-efficiency and distributed-energy sectors, 2018 was an action-packed year. The underlying forces that led to new technology trends are unlikely to diminish in this new year. We think many of these drivers are harbingers of what's to come in 2019.

What the Top Technology Trends of 2017 Tell Us to Expect for 2018

Jay Stein
February 12, 2018

It's easy in our slow-moving industry to assume that 2018 will be much like 2017, and given that the forces behind last year's trends will still be with us, we anticipate many of those trends to continue. Plan for more chaos and rapid technological change in 2018.

My Search for the Killer App for Residential Batteries

Jay Stein
September 5, 2017

Surveys show that customers like batteries and many are considering buying them. Before utilities encourage customers to make those purchases, they first have to figure out what those batteries will do that benefits both customers and utilities.

What the Top Technologies and Trends of 2016 Tell Us to Expect for 2017

Jay Stein
January 13, 2017

At the start of every year the E Source tech team selects its 20 favorite technologies and trends for the previous year. It’s fun to look back at what happened over the course of 2016, but it’s also valuable to think about what those trends portend for 2017.

Don’t Assume Trump Will Stop the HFC Phasedown

Jay Stein
January 3, 2017

Because President-elect Trump regularly expresses disdain for climate-change regulations, some assume that the new administration will obstruct the international and domestic statutes to phase down HFC usage. The situation is actually more complex, and US support for an HFC phasedown may survive.