Glad you found a way to "save money" on your electric bill. Back when the NY energy market was deregulated and periodically from time to time Con Edison sends you a letter about something called the PowerMove program.
It's basically a 7% discount AUTOMATICALLY off your entire bill when you change to an ESCO (energy supply company versus what ConEd has). What ConEd does is it usually picks whatever is available for your local region and determines a market rate of electric/gas based on your geographic region's usage and what the market dictates so you do see your per watt/therm rate fluctuate from month to month.
Keep in mind that the Majority of your electric bill is made up of the delivery charge, and although the whatever % in fixed dollar amounts is NOT much over time things add up. It can be a free coffee a month to a free dinner a month depending on you, where you live, etc.
I'm sure your friend had his reasons for joining Verdian and other people's friends have their reasons for joining various MLM companies (they all have different pay out structures). I advise ALL of my clients NOT to do fixed plans, only because there is a high possibility you end up paying more. It's basically the equivalent of a Debit vs Creditcard argument (some people like seeing the money taken out immediately). Some people enjoy seeing a "set" rate (this doesn't fix your service charges from ConEd which vary). It's a mental thing. In the end, with the energy market the rate works itself out. In addition, when you go with fixed rate plans many times the fine print isn't read based on your trust of your representative (and some don't even know). Usually fixed rate plans lock you in for a certain time period and there can be a early cancellation fee charged. I show all my clients the energy company options and all their promises and perks.
Ambit Energy is the ONLY energy company that can validate and gaurantee you the AT LEAST 1% savings. They basically do the math between their supplier rate and your incumbents rate and charge you whatever it is. If it's the same rate, Ambit cuts you a check for the 1% (most of the time it is a lot less, my customers save anywhere from 3 to as much as 20% in a year).
Feel free to hit me up with any questions. Also for the Long Island guys, sorry LIPA hasn't opened up their electric market for my company. Only the gas.
Disclosure: I am an Ambit Energy Consultant, although it is not my full time job I do it to help people out. I also advise them on how to make their houses more green and save even more money. It's a side service I provide to my customers.