I have been contacted by several companies who are now competing with National Grid to sell you elec/gas. They will arrange the switch (no charge) and your charge appears on your National Grid bill (National Grid still sends you one because the companies use their lines), and they will switch you back (again, no charge, no penalty) if you are not satisfied---no questions asked. I hear more and more people are switching, and can save 20% or more each month. Does anyone out there have any personal experience with this? No Business Reps for said companies reply, please. Thanks!