I love my demand controller that I had installed about 10 years ago. Recently Inergy Systems has changed over my configured system, and I am extremely happy with the interface and the results I have been getting. I can see my energy usage instantly and my savings! I am also very impressed with the customer service I have gotten to help me learn how to use the system. They have videos and people you can talk to.
I would highly recommend Inergy Systems to anyone who asks my opinion!