Ask the experts

Given the chance, we’d talk about solar power all day long. So we’re more than happy to answer any questions you may have.

Have a burning question about one of our technologies? Check this section to see whether it’s already been answered, and if not we’ll get right back to you.

Is there a standard weight in Kilonewtons per sqare metre for PV panels?

Each manufacturer has different weights for their panels. There is no standard, although it is more beneficial to a manufacturer to keep their weight low as to help with loading implications.

You can find more information about weights of panels on their datasheets.

This post was answered by on September 23, 2014. Bookmark the .
Could you please tell me do you require planning permission or buildings regulations to have solar panels fitted oto my roof

It is only if your property is in an area that has had planning rights removed that you require planning permission. This will be areas like, areas of outstanding beauty, listed buildings.

If you property has not had it planning permissions removed then you can install panels without seeking permission, as long as they do not protrude over your roof, or are any taller than 200mm from your roof plain.

This post was answered by on September 23, 2014. Bookmark the .
Do the panels create enough power to run a washing machine during the day without using the national grid

The average wattage of a washing machine is 700W, peaking at 2000W for heating (source). A PV system that is greater that 1kWp* will be able to supply the demand for the average wattage of the washing machine. If you did not want to use any energy from the grid then you would need a system that could manage the 2000W load, which would require a system of around 2.5kWp*.

* The system sizes mentioned are based on an output of a south facing roof, at 30°, on an average clear day.

This post was answered by on May 19, 2014. Bookmark the .
Hi I have a big roof, and would like to put lots of solar on the roof, but don’t want to pay for an expensive grid connection. What is the biggest size I can have without a connection?

EvoEnergy only install  grid connected systems. By producing your electricity off-grid you would still get a feed-in-tariff payment but it would be significantly less than if you were on grid, and you’d also be missing out on the export payments.

This post was answered by on April 11, 2014. Bookmark the .
Is it possible to have a non roof mounted installation of Solar Panels

Yes, it is possible to have a non-roof mounted Solar System. You will need planning permission for this. The panels will not be roof mounted but they will still require to be tilted to catch the best of the light. This tilt is usually above 10 degrees.

This post was answered by on April 11, 2014. Bookmark the .
When is the best time to use your free electricity, is it whilst the red light on the meter is flashing or whilst it it stays lit?

When the red light of your generation meter is blinking this will mean your PV system is generating electricity. This will be the best time to use appliances in your house. When the red light of your generation meter is steady this means you are not producing any energy and that any energy being used in your house will all be imported from the national grid.

This post was answered by on January 30, 2014. Bookmark the .