THE BAD POINTS.The sales man was half an hour late for his first appointment. He was 20 minutes late for his 2nd. The energy surveyor never turned up for his first appointment. I was working away from home that day and left work 2 hours early. This was on a Thursday. By the following Tues nobody had rung me to explain why he didn't turn up so I had to ring them. Another appointment was made. This time the surveyor turned up over an hour early so yet again I had to leave work early. The installation(on the 31/10/15) went ok apart from the following, 10 screws protruding into the bedroom ceilings and a photo frame smashed. The electrician couldn't commission as the sun had gone. He came back the next day (sat) and commissioned the installation but was unable to get the "OWL" monitoring system to work. A new OWL was ordered and he came back 2 weeks later. This one didn't work either. Tempo then decided to change the inverter. This was installed and worked but again the owl would not give accurate readings ( it was out by approx. 70%). It was now 1 week before Christmas and was informed that Tempo were trying to source an alternative to the Owl. By the 2nd week in Jan I had heard nothing so yet again I had to phone them. It was agreed that an electrician would again come out and change the OWL. This had to be done on a weekday has they don't work weekends. I was told that they would phone me with a date. A week later they hadn't phoned so I rang them (on a Monday). I was told that an appointment had been made for the Wed, so if I hadn't have rung I wouldn't have known about it. More time off work. The electrician arrived and concluded that the OWL was ok but it was the generation meter that was at fault and he would have to come back and change it. I heard nothing for another two weeks so I phoned again. I agreed that the electrician could come out in 2 weeks on the Sat if he was available and Tempo would phone me to confirm the appointment within a few days. They never phoned until 3pm on the Fri, 2 weeks later, by this stage I had already made plans for the weekend. Another appointment was made for the following Sat at 8am. By 08:45 on the following Sat there was no sign of the electrician. I went out to town. At 10:45 the electrician phoned me to say he would be there in 45minutes (11.30) I pointed out that the appointment was for 8am, he told me that the other electrician couldn't make it and that he was told to come at 10:30, an appointment which he was going to be an hour late for. I was not available so I told him that Tempo would have to rearrange. He was willing to come the next day but as I was out all day this would be no good. Again I waited for Tempo to get in touch with me, they didn't so yet again I had to phone them. During this time I found a monitor on line that would do the job and worked out that is was the OWL at fault and not my meter( I'm an electrician myself). Tempo said that they would look into this other monitor and get back to me. By this stage we were half way through March and I was going on holidays. I got back from holidays and still Tempo had not contacted me, I phoned again. A manager said that he was still looking into the alternative monitor and would contact me soon. Two weeks later and still no call so I phoned them, they told me that they had decided to send me a cheque for what I paid for the OWL ( they retail at approx. £75). With this I would then be able to purchase the other type monitor. I agreed to this. Two weeks later a cheque arrived for £20. It had taken TEMPO a total of 5 months to get to this stage. If I had hair I would have been pulling it out 3 months ago. My opinion of this company, they don't communicate with each other or with their customers, little or no customer service. The only reason I gave them a VERY POOR rating was because there was no lower option available. I would not recommend Tempo based on the experience I had with them but any one reading this can make up their own minds, maybe I was just unlucky. THE GOOD POINTS. The installation is fine. I was given a discount for the damage to the ceiling, the broken photo frame and for the first half day I had to take off work.