andrew gaines

Andrew Gaines

The ESP Certificate Program provides exceptional sales training for the energy efficiency and renewable energy professional. It is incredibly comprehensive, well-designed, creative, and engaging while providing ongoing support and networking opportunities to the ESP Ninja graduates. I highly recommend this program."

Love one of our blogs? Feel free to use an excerpt on your own site, newsletter, blog, etc. Just be sure to send us a copy or link, and include the following at the end of the excerpt: “This content is reprinted from Mark Jewell's Selling Energy Blog, a source of daily motivation for professionals advancing efficiency. Mark Jewell is the Wall Street Journal best-selling author of Selling Energy: Inspiring Ideas That Get More Projects Approved! Subscribe at”