I'm pretty good at shopping around for phone and cable rates, but this is a new one on me.

I received a an offer today from IGS Energy. They want to sell me the gas I use for heating/AC and hot water.

I haven't researched yet. I assume that they offer a fixed rate, where Commonwealth Edison, the big default supplier, floats with the market. I'll have to look at my usage history. What else do I need to know?

Thanks for any insights you can offer.

You might also check out whether there's a cost to disconnect from Com Ed and go with IGS.