Don't ever go with OVO, in my whole life never have I ever gone through stress like OVO causes me. Absolutely none of there staff are on the same page every call you do they will advise you something completely different and constantly conflict your previous advice. Then threaten to charge you even more money. I pay OVO £290 a month which cover my usage and usually enough to pay them £150 towards my arrears as they were charging me £87 when I moved in and after 11 months they did a reading and apparently I owed them £2600 even though my account was positive prior to that they just went off 'estimated readings' but I had no idea so instead they hit me with a huge bill and then asked for over £600 per month back and as a single mum to two young children I couldn't physically afford that, found a comprise of £290 for them to change there mind every month and demand more money. Honestly it's the worst, it's ridiculous and I'm sure they overcharge. My electric never makes any sense, a few months ago I was on holiday but apparently still managed to use the most electric while on holiday. Avoid save yourselves the grief