How a Solar PV System Works

Understanding how a solar PV system works can help you decide whether solar energy is right for your home. While the technology behind solar panels is advanced, the overall process is surprisingly straightforward.

This guide explains how a solar PV system works from start to finish, from sunlight hitting your roof to electricity being used in your home, stored in a battery, or exported back to the grid. It’s written in plain English, without technical jargon, while remaining accurate and trustworthy.

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The End-to-End Solar PV Process at a Glance

A solar PV system works by:

Each stage is explained in detail below.

Steps How a Solar PV System Works

Step 1

Sunlight Hitting Solar Panels

A solar PV system begins working when daylight reaches the solar panels installed on your roof. Each panel is made up of photovoltaic (PV) cells that respond to light. When sunlight hits these cells, it triggers a natural electrical reaction. The brighter the daylight, the more electricity the panels can produce, but they will still generate power on cloudy days, which are common in the UK.

Solar panels do not store energy themselves and they do not produce heat. Their sole purpose is to convert light into electricity, and this process starts automatically whenever there is usable daylight.

Step 2

DC electricity generation in the panels

As the PV cells react to sunlight, they generate electricity in the form of direct current (DC). This is the first stage of electricity production in a solar PV system. DC electricity flows in a single direction and is carried safely through the system’s wiring from the panels towards the inverter.

At this point, the electricity is already usable energy, but it is not yet suitable for most household appliances. The system is designed to move this DC electricity efficiently and safely to the next stage without any input from the homeowner.

Step 3

DC to AC conversion via inverter

Homes in the UK run on alternating current (AC) electricity, which means the DC electricity produced by the panels must be converted before it can be used. This conversion is handled by the inverter, which is a key part of any solar PV system.

The inverter changes DC electricity into AC electricity that can be used throughout the property. It also helps manage the flow of electricity, ensuring the system operates safely and efficiently. Many modern inverters include built-in safety features and allow performance data to be viewed through a monitoring app or display.

Step 4

Electricity usage within the property

Once converted into AC electricity, the power flows into your home’s electrical system and is used automatically by your appliances. Your home will always use solar-generated electricity first, before drawing any power from the grid.

This happens in real time and requires no changes to how you live. When your solar panels are generating electricity during the day, everyday activities such as cooking, working from home, or running appliances can be powered directly by solar energy. This is where most homeowners begin to see savings on their electricity bills.

Step 5

Battery storage (if installed)

If your solar PV system includes a battery, any electricity that is not used immediately can be stored rather than exported. The battery holds this energy so it can be used later, such as in the evening or during periods of low solar generation.

Battery storage is optional and not essential for a solar PV system to work. However, it can help you make better use of the electricity you generate by reducing how much you need to buy from the grid at other times of the day.

Step 6

Export of excess electricity to the grid

When your solar panels are generating more electricity than your home needs, and your battery is full or not installed, the excess electricity is automatically sent to the national grid. This process is known as exporting.

Many UK households are eligible to receive payments for exported electricity through the Smart Export Guarantee (SEG). Exporting happens in the background and is measured by your electricity meter, with no action required from you.

Step 7

Monitoring and performance tracking

Most solar PV systems include monitoring tools that allow you to see how your system is performing. Monitoring usually shows how much electricity your panels are generating, how much your home is using, and whether energy is being stored or exported.

This information can be accessed through a mobile app or online dashboard and helps homeowners understand their energy usage over time. Monitoring can also make it easier to spot any changes in performance and ensure the system continues to run efficiently.

Book A Quote For Your Solar Installation In Edinburgh

Solar PV systems are becoming an increasingly popular choice for homeowners and businesses looking to reduce their carbon footprint and save on energy costs. At our Edinburgh-based company, we specialise in solar panel installation and can help you design and install a solar PV system that meets your specific needs. With years of experience in the industry, our team of experts can provide you with top-quality solar panels and equipment, as well as professional installation services. Whether you're looking to install solar panels for your home or business, we can help you make the switch to clean, renewable energy. Contact us today to learn more about our solar panels in Edinburgh services and see how we can help you save money and reduce your carbon footprint.

What Areas Do We Cover In Edinburgh

Service Areas

Our coverage includes all Edinburgh postcodes, ensuring that residents and businesses throughout the region can benefit from our expert solar services.

Not only that but we also cover, Fife, The Scottish Borders, Midlothian and more! We’ve even installed in Glasgow, Dundee and Aberdeen! Why not request a quote if you’re interested?

Here is a comprehensive list of the Edinburgh area postcodes that we frequently work in:

Edinburgh Postcodes:

EH1
EH2
EH3
EH4
EH5
EH6
EH7
EH8
EH9
EH10
EH11
EH12
EH13
EH14
EH15
EH16
EH17
EH18
EH19
EH20
EH21
EH22
EH23
EH24
EH25
EH26
EH27
EH28
EH29
EH30
EH31
EH32
EH33
EH34
EH35
EH36
EH37
EH38
EH39
EH40
EH41
EH42
EH43
EH44
EH45
EH46
EH47
EH48
EH49
EH51
EH52
EH53
EH54
EH55

Surrounding Towns & Villages we frequently work in:

Balerno
Bonnyrigg
Broxburn
Currie
Dalkeith
East Calder
Gorebridge
Gullane
Haddington
Juniper Green
Kirkliston
Linlithgow
Loanhead
Musselburgh
Newbridge
North Berwick
Penicuik
Prestonpans
Ratho
Roslin
South Queensferry
Tranent
West Calder
Wallyford
Winchburgh

If your area falls within any of the listed postcodes or surrounding villages, you can count on us for top-notch solar services. Our team of skilled professionals is dedicated to ensuring your home heating system operates efficiently and reliably, no matter where you are in Scotland and its neighbouring communities. If you don’t see your area, please give us a call and see if we can help.