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Are you thinking about installing a solar thermal system in your home? If yes, the you’d most likely be wondering the exact amount the system is going to cost. Well, you’re not alone. This is one of the most common question when it comes to solar thermal systems and we aim to answer that in this article. So let’s get started!

Unfortunately, the cost of a solar thermal system can’t be given in a single, accurate answer as they vary widely. However, when getting a new solar thermal system, you can expect to pay a sum within the range of £3000 to £6000 ( this includes a lowered VAT rate of 5 percent). The figures provided takes into account the installation costs as well as all the parts ( such as control panel, solar collectors, hot water tank and pipes).

To determine the price of your system, the quality and type of the panels matter. For instance, according to the Solar Trade Association, a properly insulated twin coil cylinder system would be priced at around £4500. in the same tone, it’s also possible to get DIY solar thermal kits that includes all the required hardware which will cost within the range of £1500 to £250. This however, may not be eligible for government support. In order to benefit from the RHI, your system must be fitted by a MCS accredited installer.

The varying prices of the solar thermal system’s initial cost is based on the specification of each individual house. For example, in situations where the building is having complicated water system, the plumbing cost is expected to increase which will have a serious impact on the overall cost of the solar thermal power system.

Solar thermal panels work by capturing heat directly from the sun and using it to heat water. This hot water is then passed through a coil to heat the water for your central heating system. Solar thermal systems are compatible with many existing conventional boilers with hot water tanks, and can be set up to feed in to your existing heating system.

It’s important to get the right size solar panel system for your commercial property. Solar panels are usually installed on pitched roofs, although they can be fitted on stands on the ground if you have some unused outdoor space. The more panels you install, the more power you’ll generate, but there’s no point buying more panels than you have space for.

Solar panel system sizes are measured in kW. 4-10kW solar panel systems are usually too big for domestic properties but are ideal for smaller commercial properties. Here’s an idea of how many panels and space you’ll need for a few different system sizes:

System size, Number of panels, Area required (approximate)

4kW, 16, 23m²

6kW, 24, 35m²

8kW, 32, 46m²

10kw, 40, 58m²

Bear in mind that solar panels can’t be less than 30cm away from a roof edge, so you’ll need more space than the area that the panels take up.

Like every other systems in your home, solar hot water systems will require periodic inspections as well as a regular maintenance in order to keep it running as efficiently as it should. Not only that, the various components will also require either repair or replacement from time to time. It’ll also be proactive to take the necessary precautions so as to prevent worrying issues like corrosion, scaling or freezing.

Is it a task you can handle on your own? Well, there are some inspections and maintenance activities you should be able to handle on your own, however, you’ll also require a qualified technician to carry out the more technical or complicated tasks. You should also take note that it may actually be more cost effective to have some systems replaced, shut off or removed completely than having it repaired. Here are some of the essential inspections that should be carried out on solar system components. They include:

✓ Collector soiling. Periodic cleaning of your collectors is important especially in dry and dusty climates.

✓ Plumbing, ductwork and wire connections. Check the pipe connections for fluid leaks. Examine duct connections and seals. Also make sure that all wire connections are tight.

✓ Roof penetrations. Flashing and sealant around the roof penetration should be checked to see that it’s in a good shape.

✓ Collector shading. Check for shading of the collectors on annual basis as this may greatly affect their performance.

✓ Support structures. Examine all bolts and nuts which connects the support structures to the collectors for tightness.

✓ Heat transfer fluids. Anti freeze solutions in liquid solar heating collectors will have to be replaced periodically. And this right here is a task that’s best handled by a licensed technician.

1. After the installer’s measured up, given you an estimated output and recommended some systems for you, they’ll arrange date to come to your home to install the solar thermal panels. They’ll also let you know if any scaffolding will be required.
2. Next, they will start to fit the panels, or collectors, to your roof. Stainless steel brackets will be provided with the system and they will remove your roof tiles or slates to attach the brackets to the rafters. They’ll then replace the tiles and add waterproof flashing to ensure you don’t get any roof leaks, and add the frame.
3. If you’ve chosen evacuated tube solar thermal panels, the installer will bolt the heat transfer unit to the top of the frame but not install the tubes until nearer the end. This is because the tubes start to transfer heat to the exchanger immediately, and when everything is unconnected this could damage the unit.
4. If you don’t need a new boiler with your installation, a new dual coil water cylinder, pump and system control system will be fitted. It’s best in a loft or upper floor of your home.
5. A new thermal store or hot water tank that will store the heat provided by the solar system is much larger than a standard tank but it may fit in the spot of your old one. The installer will ensure that it’s connected to the mains cold water, your other heating source (such as a gas boiler or biomass boiler), immersion heater, temperature sensors and the solar collectors themselves.
6. Next they will install the pumping station, usually near the water tank. The expansion tank will be installed on the solar thermal loop, which is usually nearby. Its job is to prevent pressure changes that could damage the system.
7. You’ll get a heat generation meter which must be MCS-certified if you want to take advantage of the RHI, and any control equipment that comes with the system will be installed.
8. The installers will then bring the system to pressure by pumping the heat transfer liquid into the system up to a pressure of around 2 bar.
9. Finally, your MCS-registered installer will register your solar thermal system so you can apply for RHI payments of up to £525 per year.
So that’s the process of installing solar thermal panels. Remember – it's always best to use a professional to install any kind of renewable technology.

How much energy a solar panel produces depends on its manufacturer and exposure to the sun. A good-quality solar panel typically has a power output of about 300 watts per hour, but this can vary from about 240 to 360 watts. How much energy your solar panel will produce per day depends on how many hours of unshaded daylight it’s exposed to.

Here’s an idea of how much energy you could expect a large commercial solar panel installation to produce in a year.

Solar panel system size, No. of solar panels, Annual electricity output

11kW, 44, 9,350kW

20kW, 80, 17,000kW

30kW, 120, 25,500kW

40kW, 160, 34,000kW

50kW, 200, 42,500kW

If you’re looking to install some new solar panels in your home or property, then you’d probably want to know how it works. This is one of the most frequent questions asked by homeowners when it comes to solar panels and in this article we aim to give you a good insight on the operations of solar panels. Let’s have a look!

Generally, solar panels work by absorbing the energy of the sun and then converting it into electricity. It functions by allowing photons from the rays of the sun release the electrons free from atoms within the photovoltaic or solar cells in order to produce a flow of electricity. There are several solar cells that are connected together ( usually 60 or 72 ) in each panel. Individual cells comprises both a negative layer and a positive one which combines perfectly to create an electrical field in which the energy is generated.

The boron that’s within the bottom layer generates the positive charge, while the phosphorous found in the silicon layer produces the negative charge. In order to convert the sun’s rays into the energy that’s going to be transported from the panels to the inverter, the two field will interact with one another.

In other words, solar panels work by turning photons from the sunlight into direct current which is transmitted to the inverter. Once it gets to the inverter, it’s then translated to alternating current and send this current to to your electric box which powers the entire home. If you do not wish to reduce the high bills that’s associated with renting power from the grid, the solar energy system is an efficient and affordable way to achieve this aim.