If you can't get your water over 200 degrees F, then you ain't got no steam!
I went down and picked up a single burner electric hotplate at a 2nd hand store for $4.00 and used it until it died years later. When I couldn't find another in the second hand stores I bought one brand new for $17. I use that for beer brewing and it will boil a 6 gallon pot of water!