frequently asked questions



How do I maintain my PV panels?

Solar PV needs little maintenance - you’ll just need to make sure trees don’t begin to overshadow them. Many installers offer basic maintenance packages, however in most cases maintenance is not required.

…little maintenance...
depends entirely upon the roof size

What size system do I need?

That depends entirely upon the roof size available. A typical house can accommodate anything between a 3 kw and 4 kw system. A 4 kw system can be achieved using either 12 or 16 panels, dependent on the number of watts per panel. A typical panel is 250 watts, however some manufacturers offer 333 watts, meaning you can still achieve a 4kw system even if your roof only has capacity for 12 panels.

Do I require planning permission for Solar PV on my roof?

Planning permission is not usually required, but may be on listed buildings or buildings within conservation areas.

not usually required
usually situated in the loft

Where is the inverter situated?

Inverters are usually situated in the loft, to be near to the solar panels. Or if loft space is not high enough, then will often be installed in a garage.

What is the difference between Mono-Crystalline and Poly-Crystalline panels?

Mono-Crystalline are produced from solid mined silicon, wafer sliced and etched to create a greater surface area. A more durable product and having a similar analogy to a Duracell battery: high output for a long period. 90% of the UK has Mono-Crystalline panels. Poly-Crystalline are produced from man made silicon and are usually lower in conversion to the Mono-Crystalline however differences are deemed as being nominal.

90% of the UK has mono-crystalline panels
simple warmth

simply warmth

Your boiler accounts for up to 70% of what you spend on energy every year. This means replacing your old, inefficient boiler for a modern ‘A’ rated boiler can save up to £490 per year on running costs!

simply insulate

simply insulate

Around a third of all heat lost in a solid wall or non-traditional property is lost through the walls. In such properties cavity wall insulation is not possible so externally insulating is often the best option.

simply renewables

simply renewables

There has never been a better time for homeowners to invest in renewable energy and in particular Solar PV. Not only do homeowners benefit from free, self-generated electricity but any surplus is sold back to the National grid and you get paid for it via the Feed-in Tariff.

Simply survey

simply survey

RES offer impartial energy advice using out experienced and knowledgeable survey and assessment team, all of whom have a wealth of industry experience including external wall insulation, cavity and loft insulation and renewable technologies.

Simply Fix

simply fix

Gone are the days of costly and time consuming timber pattress fittings, an element of the install which can cause time delays and potential install problems. With Simply Fix you can “simply fix” our fittings directly into existing insulation.