We had a variable rate plan with Dynowatt for several years without any issues. During this Texas summer from heck,(we had sustained 100+ temps for months) they more than doubled our rates - without warning or notice.
My bills leaped from $275 to over $500 a month.
When we called to complain,(after spending hours on hold) they offered to credit us back a portion of that IF we signed up for a 12 month fixed rate plan at 13 cents per KWH.
(66% higher than the current market price for fixed rate plans)Needless to day, we are no longer Dynowatt customers. I encourage you to avoid them also.