FAQs - Frequently asked questions
A. 7 Energy are approved MCS installers so any installation we carry out for you will qualify for the UK Government's Feed-in-Tariff payment incentive
Q. Do I need planning permission for a Solar PV system?
A. Roof mounted Solar PV systems do not need planning permission unless the property is listed or located in a conservation area, national Park, important bird/bat area or an area of outstanding natural beauty.
Q. Is my roof strong enough?
A. Most domestic house roofs are strong enough to take a solar power installation without any reinforcement required. 7 Energy always carry out an initial site survey and will advise you accordingly.
Q. What happens during a power cut?
A. A grid connected Solar PV system uses components that instantly switch off the system when a power cut occurs. This is a requirement of the electricity regulations. The system will automatically re-start once power is established.
Q. What is the best location for a Solar PV array of panels?
A. Most roofs provide a good location for the Solar PV panels. Ideally the roof should be south facing and free from shaded obstacles.
Q: Why wood pellets? Does burning wood not generate pollution?
A: It is true that the combustion of wood fuel releases carbon dioxide into the atmosphere. However, the amount of carbon dioxide released is only equal to the amount which was absorbed as the tree grew prior to felling.
Unlike fossil fuels which are not being replaced as we burn them, wood fuel is an infinitely renewable resource: provided we replant as many trees as we fell, there will always be a supply of fuel that should not provide a net increase in carbon dioxide levels.
Overall, when burnt efficiently and cleanly as it is in an Organic Energy wood pellet system, wood fuel is as renewable an energy source as you can get. See the Wood Pellet page.
Q: Can I replace my gas or oil boiler with a wood pellet boiler?
A: Yes - provided you have enough space. A Pellematic wood pellet boiler is as automated and easy to use as a gas or oil boiler, and can supply a similar heat output. However, it is important to realise that these are boiler room machines, not kitchen appliances. A wood pellet boiler and pellet store require a minimum of 8m2 floor space, and preferably 10m2 or more. See the Energy Box page for more details.
Q: Does the automatic wood pellet boiler have to run continuously?
A: No. The boiler is fully automatic, and indeed has complete electronic control over the entire heating system.
Q: Can I use my current radiators and plumbing?
A: Yes, provided they are in good condition and were originally designed to be of a suitable size and specification for your building. If your current radiators are in poor condition or are unsuitably sized for the heat load, they will prove to be inefficient with whatever heating system you use, so are better replaced in any case.
Q: Can I get a grant towards the installation cost?
A: Yes. By installing a wood pellet (biomass) boiler you will qualify for the UK Government's Renewable Heat Incentive scheme (RHI scheme). Read more here.
Q: What will a Solar Thermal panel installation contribute towards my hot water heating?
A: A well designed/sized system can, over the summer months, supply virtually all of your domestic hot water requirements. Even during the winter months the panels will make a contribution to the hot water system and provide fuel and heating bill savings all year round.
Q: Can I use solar water heating and a wood pellet heating system together?
A: Yes, absolutely. Solar water heating and central heating boilers are a perfect match. In the winter, when the sun does not provide sufficient energy to ensure a supply of hot water, it is no problem for the boiler to take on this demand because it is already running and providing central heating. And in the summer months when the boiler is normally switched off because the central heating is not in use, very often the sun will provide sufficient hot water for your shower, bath, washing machine and dish washing needs.
Q: My roof is in the shade or north facing. Can I still use solar water heating?
A: Realistically, no. In order to be both energy - and cost-effective a solar panel must have full sunlight whenever it is available. However, a number of alternatives are available for people who do not have a south-facing roof in direct sunlight. Solar panels can be mounted on an inclined frame attached to an east or west facing roof in order to ensure that the panels themselves face south-east or south-west. If no suitable roof is available at all, panels can be installed on a free standing frame which can be situated adjacent to the building, or even a small distance away from it in order to capture maximum sunlight.
Q: Can I use my existing boiler with a solar water heating system?
A: Yes, normally they will work together very well. In the winter, when the sun does not provide sufficient energy to ensure a supply of hot water, it is no problem for the boiler to take on this demand because it is already running and providing central heating. And in the summer months when the boiler is normally switched off because the central heating is not in use, very often the sun will provide sufficient hot water for your shower, bath, washing machine and dish washing needs. We offer this integration with the Pellematic wood pellet boiler system.
A: Yes. By installing a solar thermal system you will qualify for the UK Government's Renewable Heat Incentive scheme (RHI scheme). Read more here.
Q: How do I know if my location is suitable for a wind turbine?
A. 7 Energy will advise you on whether your geographic location is suitable for a small wind turbine. You can also use the Department of Industry Wind Speed database to find out the average wind speed in your area - visit this site.
Q: Do small wind turbines quality for any financial incentives?
A. Yes. A small wind turbine installation, when installed by 7 Energy will qualify for the Feed-in-Tariff. Read more here.
Q: Do you supply the wind turbine masts?
A. Yes, all our turbines are supplied with an appropriate mast that has been specifically engineered for the turbine it supports. 7 Energy will carry out all the groundworks when installing your system.
A. Modern small wind turbines, especially those supplied by 7 Energy, are designed to be quiet, for example by having a direct drive system there is no gearbox noise (also it increases efficiency). In general, the wind itself makes more noise than a wind turbine. It is most unlikely that any noise from small wind turbines will be heard at more than 50m.
Q: Where do I site my wind turbine?
A. 7 Energy will advise you on the best location for your small wind turbine mast. We recommend siting it at least 100m away from any neighbouring property and your house/building itself.
These are just a selection of FAQs regarding the renewable energy systems that we supply and install. You are most welcome to call 7 Energy, email us or complete our Enquiry Form if you need any further information. We shall be only too pleased to help you.