Many of NWT’s installations have been in place for several years now and whilst they are still operating well, their output can be improved through frequent maintenance and cleaning visits. In the same way as servicing a car, this helps to ensure that the equipment is operating correctly and to recognise any issues before they become a real problem.
Our specialist cleaning equipment ensures that as much of the dirt, bird waste and lichen as possible are removed from the panel surface, increasing the amount of light reaching the surface and ensuring the modules generate as much electricity as possible.
Another advantage of regular inspections is that NWT can perform electrical testing and identify further issues such as in this case where the foliage was also casting a shadow across the panels, reducing their output still further:
The majority of solar installations in the UK use string inverters. This means that even small amounts of shading such as that shown here can in fact be bringing down the output of whole rows of modules. This is because the output of each module is limited to that of the lowest-performance module by the “string” wiring arrangement. NWT use Solar Edge technology to remove this effect, however it is still important to ensure that all modules are free from shade where possible.