Originally Posted by meecal

The fine print for most (all?) of these offers points out that the promo is only for new customers.

I used Energy Plus in the past and was able to switch away from them after receiving signup bonus points. The snail mail offer I received from NRG looked awfully similar even though Energy Plus isn't mentioned anywhere. To minimize chances of going through with the deal only to find out that I was deemed ineligible I called NRG and confirmed that they had no record of my account in their system and therefore I'm eligible for this program.

I just signed up for the NRG United promo. I'm writing up a post on the topic now.