FAQ's

Below are some of the most frequently asked questions we receive, we keep this section updated constantly to ensure you have access to the information you require.

If however, your questions are not answered in this section, please go back to the Contact Us page and send us an email.

Solar Energy

Can I mount solar panels on a wall instead of a roof?
It is possible to put solar panels on a wall, but it is important to note that performance will be lower and you must endeavour to mount them on a wall that sees sunlight at some point in the day.

Do I need to apply for planning permision before I install renewable technologies such as solar panels or wind turbines?
Issues surrounding planning permission are unique to every home. If for example, you live in a listed building you will require planning permission before making any changes to the exterior of the property. We would advise you to contact your local authority for tailored advice on your situation before purchasing a renewables system.

How do Photovoltaic panels work?
Photovoltaic panels convert solar radiation into electricity. The cells within the PV panel consist of one or two layers of a semi-conducting material, usually silicon. When light shines on the cell it creates an electric field across the layers, causing electricity to flow. The intensity of light directly relates to the flow of electricity. PV systems create no greenhouse gases, saving approximately 325kg of carbon dioxide per year for each kWp installed.

How long can I expect till I receive a return on my investment in a solar water heater?
A typical solar water heating system is a sound investment and will typically pay back the initial investment in 8-10 years (a conservative estimate) through savings you'll have made in water heating.

How many solar panels will I need to make a difference on my emissions and energy bills?
Generally, one solar panel will provide enough energy to heat a 100 litre hot water cylinder. A home with a 200 litre cylinder will require 2 panels.

How much can I expect to offset my carbon footprint by installing a solar water heater?
A solar water heater can be expected to reduce your home emissions by up to 15% a year. That equates to about a tonne of C02.

How much can I expect to save on my energy bills by installing a Solar Photovoltaic (PV) panels on my roof?
In a typical year, a solar Photovoltaic system will generate around 800kWh of electricity kWp. This is equivalent to around a 33-50% saving off your electricity bill every year.

How much money can I expect to be awarded through the Low Carbon Buildings Programme?
The money available through the LCBP is split into two phases, one to provide grants for homeowners and one for charities and the public sector. Homeowners can expect to receive a grant of up to £2,500, depending on the type of technology installed. As for the 2nd phase of the LCBP, applying to public sector buildings such as schools, hospitals, housing associations and local authorities, figures are not available on what applicants can expect to receive, but applications are being accepted now, with awards expected to be made up to mid-2009. For more information, visit the BERR's LCBP website, at www.lowcarbonbuildings.org.uk/home.

How much water do I have to be using to make a solar water heater a good investment?
A typical 2 person household where each person has a shower a day can make substantial savings in water heating bills, and reduce your carbon footprint.

I've heard that solar panels may not be suitable for all properties. How do I check if I can install them on my roof?
A solar panel system will require about 3 to 4m² of roof space so you should ensure that this space is available on your roof before you buy a system.
It is also important to ensure your roof has unobstructed sight of the sun from 9am until 3pm from February through to October. The panels should be installed at an angle of 30°- 50° to the horizontal and directly facing the sun at some stage between 10am and 2pm.

What is the difference between solar photovoltaic panels and solar thermal panels?
Photovoltaic panels generate electricity to be used anywhere in the home direct from sunlight. Solar thermal panels use the suns energy to heat water.

Will a solar water heater work with my existing boiler?
Solar water heaters will work with almost any existing boiler. Although we would recommend an individual assessment or survey which might suggest the best option is to replace your existing boiler to reduce your energy consumption and save on your bills.

Will the UK climate support the use of solar panels?
The solar panels we supply are not contingent on the UK climate; they will work in cold and cloudy weather. Solar thermal panels use light to produce energy rather than heat, so hot water will always be available. Solar Photovoltaic panels use light to generate electricity rather than heat so generation will always occur as long as there is light. Obviously, the brighter the light the more electricity will be generated.