Calisen Reviews 

This company is a complete joke, a sum of incompetency that can only deserve zero stars.

Four appointments in 3 months and the gas meter is still faulty.
Two visits with the wrong meter, two appointments cancelled at the end of the time window in a completely unprofessional manner.

I've nowcfiled complaints and escalated to Ofgem, asked for a penalty repayment and please all do this because Calisen is incompetent.
After 8 weeks, if the matter is unresolved, I will take with Ofgem ombudsman to the next level.

Ecotricity should change smart meter partner company, Calisen is tarnishing their brand.

Someone random person just turned up, knocks on my door. Despite noone awsnering the door, would have thought he would have left and not come back. He walked off and come back again started going down my meters both electric and gas. After I mentioned am not currently at the property he left. Had no warning they was even attending. But just to going down meters is unprofessional but even more dont seem that my address was down for a job. Seems he's gone to the wrong house and not checked addresses. Very unprofessional

Awful company, always cancel , telephone operatives are also not very bright , very challenged

Booked appointment 2 months in advance for visit between 8 and 12, got call at 11am on the day to say unable to fulfil, had taken time off work for it

Abdul from Calisen came to fit a new energy meter on behalf of Scottish power yesterday. He was very polite and efficient in his Work. Shown me how to use the Smart reader so I can see live usage stats from the meter and overall was a top guy. Would recommend.

Showed up at my door without appointment accessed meter panels and broke the lock mechanism left a card to say I'd missed them when they didn't even knock.

One star is far too many. Person arrived, spent all the time on his phone to a lady. Left heating on full without saying he had turned it on. Shower no longer worked. Contacted them and Scottish Power neither of which were interested. Fobbed me off with a load of rubbish saying if the lights in house were working shower would be wired correctly. They said showers run off main system which they don’t. It’s illegal. Called an independent electrician out . He stated shower wires just hanging out of box , nothing connected, and there is no way of turning power off shower, making it dangerous to use. He wouldn’t touch it for legal reasons. Now been reported to Ofgem

Timewasters. After being referred to Calisen via my gas provider for a smart meter installation they have proceeded to mess me around for the past 6 weeks.

My appointment has now been cancelled twice on the day for unforseen (imaginary) emergencies for their engineers.

Do not even have the courtesy to call on the day to let you know they are cancelling. You need to sit on hold with their customer service team only to be told they were just about to call to let you know. What a coincidence.

Next available slot is unfortunately in 2 weeks time. And then the cycle begins again...

Looking at their other reviews, definitely not an isolated incident. I'd recommend considering switching energy providers rather than relying on Calisen.

Absolutely disgusting customer service
Had appointment for meter installation 10-2 and waited months for the appointment.
Failed to turn up and didn’t let me know

Completely unprofessional and wasting individuals time.

Applied for a Talent Advsior role.
Jumped through recruitment hoops including online testing.
Radio silence for two weeks to receive an email that they are
"Currently reviewing the scope and requirements of the role. As part of this process, the parameters for the position have changed significantly from what was originally advertised"

Good advice would be to know the position you need to hire for within your business, the businesses needs and stick to it.

However, I do feel like a bullet has been dodged as if this is the disorganisation and unprofessionalism of your internal recruitment team I am unsure whether I would have now wanted to be an employee associated with it!

Have not been able to submit readings for 5months switched provider and they sent calisen out to fit a new gas meter within 2 weeks of me being with them.

Ryan came fitted my meter and was very respectful. I know there are some painful thing with my house and one was him not being able to get the gas to speak to the sender with the electric.. however i have been submiting manually for over 9 years so it didnt phase me. Just having a working meter filled me with happiness after a stressful cold xmas and couple of months as a budgetted household. Thank you ryan and thank you calisen top tier

Meter reader man turned up unannounced, tried to pressure me into letting him in and was very rude when told it wasnt convenient to read our business smart meter. I requested that an appointment was prearranged in future. He was very agitated and sarcastic in response.

Cancelled my appointment at the last minute with a BS excuse. What's even the point of them?

Bombarded with messages re their requirements…then a no show! Took day off work, waited in …useless!!

Would have given no stars if that was possible. Having been badgered by my utility provider for a number of years to have a smart meter installed , I agreed and a date was set for 7 January. Late in the afternoon of 6th I received a call to say that "due to unforseen circumstances" they were unable to keep the appointment. It was rebooked for 18th February - no priority given for having cancelled. I received a number of reminders about the appointment the last one being on 17th February. Later in the day I recieved another email saying "Great news, your installation appoinement is booked for 10 April". I contacted my provider who conformed that the appointment had been cancelled. Following two lengthy conversations with the provider, they were unable to resolve the issue with Calisens. Calisens claimed to have attempted to call me and then left a text message, needless to say this was untrue. Phone working normally, no missed calls and no text message. No explanation as to why the appointment was cancelled and not able to attend for another 8 weeks. There is no priority for customers that have been let down & no consideration for people having to make arrangements to facilitate these random appointments. Like many reviewers on here, I am baffled as to why my provider is still dealing with them. The service is appalling

Three appointments and each time the engineer never turn up. Totally waste of time.

I can only respond on behalf of my 83 year old Mum, a meter reader took a reading a few months ago he told her that the meter was outdated and would need replaced and he placed a call to another team and got my mum to verify her id and booked a replacement for this February, I advised her that it would be replaced with a SMART meter which she didn't want, as, in my opinion the meter reader was not qualified to make that technical comment, I subsequently cancelled the appointment on my Mum's behalf only to be asked why, told them my Mum does not want a SMART meter until it becomes mandatory. So is Scottish Power et al using this company to carry out meter readings and trying to ply customers to change to SMART meters? I think so.

Just had a very last minute cancellation by the engineer advising that they didnt have stock of what was required to change my meters to smart meters. I'm sorry but all they do is change peoples meters to smart meters so how can they not have stock on there van! They must have known how many jobs they had for the day so why didn't they message me in the morning. Then at least i wouldn't have wasted a day waiting in! Absolutely terrible service and total disregard to people's valuable time.

After a call from Scottish Power asking me to book for an Electricity smart meter to get fitted I made an appointment on 17/12/25 for a meter to be installed between 10 and 2 on 07/01/2026. I’ve been waiting for a couple of years for this as so far Scottish Power have said they can’t install a smart meter at my address. Got texts and emails from Calisen confirming the appointment then today after clearing access and waiting at home, I got a call from them at 1pm to say engineer not coming and earliest reschedule they could offer is 28/01/26 - 3 weeks away. As soon as I agreed to the new date he hung up, no apology! Why are Scottish Power and other suppliers still using this incompetent supplier???? Having no smart meter is costing me a fortune as I am not able to get on an EV tariff until the meter is fitted. Will update in 3 weeks if they turn up then but from reading other reviews I think my pain is just beginning!!

Had smart meter installed all seemed well, however it turns out no readings being sent to my electricity provider and I cannot read the meter the low cost night rate has disappeared.
My electric company have raised the issue but no action other than a phone call asking me to take a reading.