I got the call yesterday too. My caller was a man. When I asked, he said he was in a call center in CA. The call and offer sounded legit to me involved some complexity that I felt needed further review.
He represented an alternate supplier who offers to provide electricity delivered through the current (no pun!) infrastructure/delivery system. As I understand it, it would still be delievered and supported by CL&P. I received mailers about this a while back. I believe this is a result of deregulation. I believe the caller said there was a choice between a six month plan and a one year plan. The prices per KWh were different. The six month plan was a little cheaper.
I asked for printed info or web site. IIRC I was given
www.conedsolutions.com I have not taken time to research any further yet, but may do so sometime 'soon'. Based on the exceptionally high cost of CL&P, it would not surprise me that there can be savings with an alternate supplier. I believe there may be others besides Con Edison Solutions too. Any other opinions?