Solar Power Frequently asked questions
- How does a crystalline solar cell work?
- What is KWP and how does it relate to KW and KWH?
- Do solar panels create energy?
- What are the components of a 'PV' system?
- What is the difference between 'PV' and other solar technologies?
- Will they work in the UK and during winter?
- How much energy do I need?
- How does it all work with my existing power company?
- Do the panels need direct sunlight to work?
- What happens when there is a power cut?
How does a crystalline solar cell work?
Rows of solar cells are used to make a solar module which is used to capture energy from sunlight. When multiple modules are assembled together (such as prior to installation on a roof-mounted system), the resulting integrated group of modules all oriented in one plane is referred to in the solar industry as a solar panel. The electrical energy generated from solar Panels, referred to as solar power, is an example of solar energy.
Photovoltaic's is the field of technology and research related to the practical application of photovoltaic cells in producing electricity from light, though it is often used specifically to refer to the generation of electricity from sunlight.
What is KWP and how does it relate to KW and KWH?
Kilowatt peak refers to the value of power generated by a solar panel system under standard laboratory conditions. In the UK, one kilowatt peak of solar panels will generate roughly 850 kilowatt hours (kWh) per year.
This relates to a kilowatt hour, A kilowatt hour is a measure of energy and conventionally it is the 'unit' of energy referred to on your electricity bill.
Do solar panels create energy?
Yes, Solar panels create energy using the Sun, the solar panels creates a direct (DC) of electricity, which is not a suitable form of electricity. The other parts of the Solar system then transfer the direct current of electricity into Alternating current (AC). The alternating current of electricity is then usable in your homeBack to FAQ List
What are the components of a 'PV' system?
The system starts on the roof, façade or ground with the solar panels, from the solar panels there is an inverter. The inverter changes the DC current of electricity into AC, this is then sent to a generation meter and then fed into the house. Any electricity that is not used in the home is then sent back through the existing grid meter and back to the grid.Back to FAQ List
What is the difference between 'PV' and other solar technologies?
PV is only one type of Solar technology, there is also another form such as Solar thermal. Solar thermal also uses the same principles as PV by using the sunlight, but it uses the sunlight to heat water sat in specially designed tubular panels. the sunlight the pre heats the water you use in your home saving energy from your boiler, therefore saving you money.Back to FAQ List
Will they work in the UK and during winter?
Solar PV will work all year round, PV works from daylight. Obviously they produce more power when the sun is stronger, as opposed to when it is overcast.Back to FAQ List
How much energy do I need?
This will depend on the size of the solar PV system installed and a number of other factors like the orientation of the system. To get an exact performance quote we can arrange for an advisor to come visit your property and design a system for your needs.Back to FAQ List
How does it all work with my existing power company?
It doesn't affect anything that you already do and so you don't need to worry about anything. You stay with whatever energy provider you like, and switch when and if you like. Your utility company will take its normal reading and bill you as usual. Of course, since you will be generating your own electricity this reading will be lower and therefore your electricity bill will be less.Back to FAQ List
Do the panels need direct sunlight to work?
Solar PV works from daylight. Obviously they produce more power when the sun is stronger, as opposed to when it is overcastBack to FAQ List
What happens when there is a power cut?
Solar electric systems for homes are grid connected. If there is a power cut your system is automatically switched off. This is a safety measure designed to stop electricity leaking on to the national grid and to protect people who may be working to restore the power supply.Back to FAQ List