GTC Reviews 

Do a planned interruption without telling anyone other than leaving an unfilled out card through the door with no times or dates on it!
Had 42 messages in the last week telling me my power will be off for the estate over the road from me!
Called to ask them to sort it, said they would and just had another 2 messages for the same estate going off again!
Complete incompetence

I don’t normally leave reviews, but I had to take the time to recognise Kim from GTC for the amazing help and support she gave me.

I had no power from 9am until 4pm and was trying to figure out what was happening in my house all by myself. Kim was so helpful, kind, gracious and patient throughout the whole process. She took the time to help me restore my meter and made a stressful situation so much easier to deal with.

It really means a lot when someone shows genuine care, understanding and patience, especially when you’re dealing with a difficult situation on your own. Kim went above and beyond, and I’m truly grateful for her help.

Thank you so much, Kim, from the bottom of my heart! You are amazing, and GTC is lucky to have someone like you on their team. Your kindness and support made a real difference to me. You deserve to be recognised and appreciated for the wonderful work you do!

Terrible company, always say power will be out for an hour and ends up being all day and night.

Had d TV TV no D TV v

This company is responsible for a substation that has tree sized weeds over growing into my house and garden. I’ve been chasing them for over 6 months to be removed but each time they assure me it’s in hand and nothing happens. Atrocious service, what am I to do

Absolute joke of a company. We sre having outages every 2 days lasting up to 9 hours. No help or communication. Lies about when power will be restored.

They seem to have taken over the grid for my estate and incompetence doesn't cover it! We currently receive power cuts every other day, ranging from 10 minutes to around 2 hours...customer services couldn't care less

We live on a new build development and we received two letters from this company regarding two outages of our electricity supply but both letters were a load of gobbledygook as they do not know what day it is. They said Thursday 29th July which is a Wednesday and Thursday 31st July which is a Friday. We have had numerous outages through the day and one for an hour at 6:25pm. I emailed them 2 days ago to get clarification and they just ignored me so I rang them around 7:25pm today and their voicebank did not even accept my post code but when I eventually got to speak to someone, they were polite but very unhelpful. I have since received a text saying the same will happen tomorrow. They are ignorant, illiterate and their engineers don't not know what they are doing either. Tinpot company I'm afraid.

A huge thank you to Phil at GTC who arranged a meter move for me at short notice. Nothing was too much trouble, he took the time to sort everything and is clearly an asset to this company! The installation team were exceptional and cannot recommend enough.

The time taken to report the fault drained my mobile phone battery. The only detail they didn't ask for was my inside leg measurement! The reply to my complaint was full of details but the cause has still not been explained. High voltage outage? What does that even mean?
They responded with a patronising suggestion that I invest in a spare mobile phone battery. I suggest they invest in some customer service and communication training.

6th power cut this morning. Used to get them maybe once or twice a year- these people took over and they are several times a week. Always for under 10 seconds

Customer service were useless - very inconfident - very confusing who was going to get the power on. It took them over 7 hours to arrive. Without power for 12 hours on a wet dark day. No funds supplied for a hot meal or the inconvenience.

I wouldn't even give 1 star!!
Customer service is absolutely shocking. My whole estate suffered a very long power cut over a weekend, total 48 hours off supply and customer 'care' team are shrugging it off saying we aren't due compensation! What's the care stand for in your title? They have no sympathy for their customers nor do they wish to listen. It's the winter and the reason we all suffered was due to insufficient cable installation NOT THE WEATHER. This is beyond a joke. Everyone has lost all their fridge/freezer items and has had no heating all weekend. I am appauled.

Here is honesty , I work on site and the gtc crew that do all our connections have an excuse book that never ends everyone on site thinks they are a joke ,they come one day tell you what's wrong (usually nothing so they make something up) then they tell you how to remedy it and the next day they come and tell us that what we have done is wrong , absolute joke

I have no idea who these people are, theyre not my supplier for anything but have been harassing me with unsolicited text messages multiple times a day, especially recently. I cant block unless I get i text them by an unknown number (Ends 6162).

I dont know who they bought my data from, but ive never heard of them until their text barrage about outages and getting ready for winter.

We run a small electrical firm, we need to use the GTC to set up solar panels. We wait months and months for any sort of contact only to find they have ignored our initial emails and have to constantly chase them to actually get them to do their job. This then means our customers we set up solar for are not able to use their panels and lose out on money. I am about to phone them again about a form that was meant to be completed back in May. Shock, it hasn't been. If you can, avoid them like the plague.

In 2024, I contacted GTC regarding a series of planned power cuts. The issue was not the cuts themselves but the power being switched on and off repeatedly in short bursts, which risks damaging electronic devices. I was told on 19 April 2024 that the matter would be investigated and someone would follow up. I never heard anything again.

Then in June 2025, while I was away on holiday, another planned outage took place. I returned home to find no power for an entire day. The next day, I received a letter informing me the power would be off, which was far too late to be of any use. I raised this with GTC and was told it was Royal Mail’s fault. That is not an acceptable excuse and simply deflects responsibility.

Given the state of energy prices and the reliance we all have on safe and stable electricity, this kind of customer service is unacceptable. GTC does not appear to take accountability seriously and fails to communicate with customers in a reliable or timely manner.

Horrendous. We live on a new build estate and have several power cuts a year that last over 12 hours. National grid manage to get all other houses back up within a few hours but these incompetent cowboys can't. There customer service is non existent & they offer no support if you have children or vulnerable people at home. There "live" updates don't exisist, they promise call backs which never happen. If you're considering moving somewhere supplied by these amateurs I would reconsider.

Had to report a power cut on our estate. Was given their telephone number by National Grid. I tried ringing them but gave in after thirty minutes of listening to irritating music.

Would give no stars if possible. Live on a new housing estate and at least one power cut a year sometimes lasting days. Their ‘live’ updates get refreshed every 9 to 10 hours sometimes. Always seem to manage to restore briefly before going off again so they don’t have to pay compensation. Need to look at the infrastructure when all other estates next to us manage to keep their power! Seriously considering moving home because of how bad they are!