Although we don’t comment on individual manufacturers or brands, there are (like any other industry) varying degree’s of quality.

In regard to performance, panels do vary depending on whether they are Mono-crystalline or Poly-crystalline.

Even these systems vary with a difference of 180-240 watts per panel. This kind of difference will make a big difference to your overall ‘return on investment’ over the long lifespan of the feed-in tariff scheme.

As such, we would always recommend that you get three quotes because the brand may be good, but the non-affiliated installers may be expensive, or vice versa.

You may find this article helpful: https://www.powermyhome.uk/pv-solar-panels/return-investment-linked-price-pay-solar-panels