We use the following process to install a Green Yorkshire Solar PV system on your home.
We will usually send a team of 3 to fit each system, this will include a project manager, a roofers and an electrician. Skills within each team are carefully matched to make sure we cover all areas of expertise. Your project manager will be responsible for making sure your project is completed on time and to our high standards. They are also available to explain your new solar PV system to you and answer any questions.
Most installs can be completed within one day, but occasionally some will run into two days – for example, roofs with slate or rosemary tiles are more fragile so we’ll take more time when installing on them. We can usually tell which projects are likely to take longer than a day, so we’ll be sure to inform you well in advance of the installation date.
We are usually with you for 3 days in total. The first day is for the Scaffolding and the delivery of the system, day 2 is for the actual install of the panels and the 3rd day is for the removal of the scaffolding.
We don’t need you to do anything except give us access to all the spaces we’ll need to work in – this will be inside and outside of your property. We’ll also need to use your electricity supply, water and toilet. Our Installation teams are professional and we promise to keep any disruption to a minimum and tidy up before we leave.
1. Erecting the scaffold
We’ll arrange for scaffold to be put up by a trusted local supplier from our approved network that stretches across Yorkshire. The scaffolding will go up the day prior to the installation to ensure there is plenty of time to make everything safe for our installers. The cost of the scaffold is included in our quote so they’ll be no additional costs.
The scaffolding is erected to provide a working platform for our installers at the eaves of the roof and safety rails that run along the edges of the roofs. It doesn’t matter how high or low your roof is, we will always scaffold a roof as Health and Safety are very important to us. Obviously on bungalows, it’s a much smaller scaffold system.
2. Fitting the roof anchors
We will double check the measurements taken during your site survey before we screw the roof anchors to the rafters. After checking where the rafters lie in relation to the existing roof tiles we will position the anchors on top of the tiles in their intended position, then double-check the measurements to make sure the frame will sit straight.
The specific roof anchors we use will depend on the roof tiles you have. Each anchor and tile has a different fixing method, and our specialist roofers have developed the knowledge to know which is best for your roof.
3. Attaching the frame
The aluminium bars that make up the frame are then locked into the anchors and screwed into place. We check that each bar is straight, and that all the bars are parallel. This is an important step to make sure that the panels will look correct.
4. Installing the panels
When the bars are in place the next step is to clamp the panels to the frame, the panels may be fitted by row or by column, depending what is easier on your roof. We take measurements and check that the panels look straight – not just from on the roof, but also from down on the ground.
PV installations look best when the panels run parallel to the edge that is nearest them, usually the eaves however roofs are very rarely perfectly straight, inevitably the ridge, the eaves and the ground will not run perfectly parallel to each other. We understand that aesthetics (as well as performance) is an important aspect of your installation, so our installation team will ensure you are happy with the layout.
5. Wiring the panels on the roof
The panels are connected depending on the system’s voltage, amperage and power, as well as the position of the panels and any shading on the roof. The panels are pre-wired by the manufacturer so connecting them is straightforward. The wires connecting the panels are then kept off the roof tiles by attaching the cables to the rails the panels are clamped to.
6. Wiring the panels to the inverter
The DC wiring from the panels needs to be run into your home. Our electricians will hide as much of the wiring as possible by routing the cable into the loft space under the panels.
The DC wiring is usually routed into the loft under the tiles, with a protective lead sleeve over them to stop the tiles above damaging the wires over time. If you have a slate roof, we will drill a small hole in the slate which the cables are fed through and then is made waterproof with a lead soaker. These wires are then fed into your inverter
7. Inside the home
While the panels are being installed, the electrician will have been working in your home to get the inverter connected to the rest of your property’s electricity supply. The invertor will have been mounted in a pre-agreed location and all the electrical equipment checked to make sure the system is safe.
Before the final connection can be made, a small modern consumer unit and generation meter will be installed next to your existing fuse box which connects to the existing supply. We will need to switch your power off for around half an hour to do this.
8. Commissioning the system
Once the wiring is complete, your project manager will switch on the inverter and power up the system. The voltage readings will be sent to the team at head office, they will be checked against the expected performance and confirm that the system is performing up to standard. The final step is for us to issue your MCS certificate.
Green Yorkshire Solar makes sense!