I was shocked to get my bill last month - €145 for a 2 bed corpo house, & the meter reading was taken, so not an estimate. I was living on my own so turned heaters off in unused rooms, and heating was on for probably 3-4 hours every night. No gas fire or cooking, and I thought it was a mild winter. A couple of years back my bi-monthly bills were about €90 during the winter months.
If the polluter pays principle is put into practice, the fixed charges should be kept as low as possible, only the price per unit of gas should be increased.
I have the old-style rads, maybe the ones with grills are more energy-efficient ?