As the Earth’s main source of energy, solar power is vital for sustaining life and maintaining a liveable temperature. Many are now harnessing this energy to heat and power their homes, businesses, and vehicles as we move closer to a world of clean, dependable, renewable energy.
Yet, some question the benefits and drawbacks of solar power and whether solar panels are worth the investment.
At Apex Doma, we’re here to guide you through the advantages and disadvantages of solar energy and assess the pros and cons of solar panels to help you make the right decision.
Key Takeaway Points on Solar Energy
- Solar energy is a renewable energy source that enables people to become more self-sufficient.
- You can save money on your energy bills by selling surplus energy back to the grid.
- PV panels are cheap to maintain and reduce your carbon footprint.
- Solar installations can be expensive and take time to recoup costs.
- New technologies continue to make solar systems more efficient and cost-effective.
What Is Solar Energy?
Solar energy is radiant energy from the Sun in the form of heat and light, used to generate electricity. It’s a renewable energy source we can use to power homes and businesses across the UK.
According to recent government figures, more than 1.5 million homes across the country now have solar installed. This figure is set to rise as the government pursues its goal of trebling the UK’s solar capacity by 2030.
How Does Solar Energy Work?
Solar energy converts sunlight into electricity. The two main forms of energy we get from the sun are heat and light, which we can use to generate electricity.
Every one-millionth of a second, the Sun produces enough energy to meet human consumption for an entire year.
This is done through nuclear fusion, where protons in the Sun’s core collide to form helium. This sets off a chain reaction, releasing enormous amounts of energy that radiate out towards Earth and other planets.
We can then harness this energy to generate solar power.
Pros and Cons of Solar Energy
There are many benefits of solar energy, such as reducing carbon emissions, helping people become more self-sufficient, and financial gains.
This is offset by potential negatives centred on cost, low buy-in, and questions about the sustainability of this technology.
| Category | Pros of solar energy | Cons of solar energy |
| Financial | The more investment, the cheaper it becomes for everyoneFree resource | Can be expensive to install Won’t solve energy demand alone, so requires other investments |
| Wider society | Offers diverse applications in harder-to-reach placesEncourages people to be more self-sufficient and less reliant on the National Grid | Rise of NIMBYism (Not In My Back Yard)Misinformation and lack of acceptance across the political spectrum |
| Environmental | Renewable, low-carbon energy source Low-impact (noise pollution) | Potentially uses a lot of space Can cause some pollution The energy needed to produce solar systems may not be sustainable |
| Technological | Increased efficiency and long lifespanCan supply energy on a variety of scales (local to nationwide) | Weather dependent Requires infrastructural investment Storage requires lithium (a finite resource) Some energy is lost in transmission |
The main benefits and drawbacks of using solar energy from the perspectives of finance, wider society, the environment, and technology.
What Are the Advantages of Solar Energy?
The advantages of solar energy include providing a cleaner, renewable energy source, encouraging greater self-sufficiency, and advancing technological development.
Here are some of the main benefits of solar energy:
- Renewable Energy Source
Solar energy is a renewable energy source. This means it’s derived from natural sources and can be continually used.
As solar is replenished on a human timescale, it’s unlikely to run out in the future. It’s estimated that we have at least five billion years until the Sun runs out of hydrogen, meaning plenty of opportunities for green energy.
This cleaner form of energy results in very few carbon emissions and other heat-trapping greenhouse gases, reducing your carbon footprint and contributions towards climate change.
- Offers Diverse Applications
Solar energy is used to generate electricity via photovoltaics or to produce heat via solar thermal.
This is particularly useful for:
- Remote areas that have limited or no access to the local grid.
- Regions with limited clean water for distillation.
- Buildings that use solar energy-friendly materials (such as transparent solar energy windows).
- Technological Developments
Solar power is becoming more efficient and effective through technological advances and intensification.
The development of quantum physics and nanotechnology could double, or even triple, the rate of electrical output from solar systems in the future. This would make solar energy available to a much wider audience at an unprecedented scale.
What Are the Disadvantages of Solar Energy?
There are some disadvantages to solar energy, centred on the initial installation costs, its efficiency, and potential environmental impacts.
Here are some of the main negatives of solar energy:
- Can Be Expensive
The initial cost of installing solar panels can be high, depending on the size and complexity of your solar system. Costs are starting to come down as technology improves, making solar energy a more viable option for people.
Government schemes, such as the Warm Homes Grant, also make solar energy a much more affordable option for eligible homeowners in England.
Solar energy must be used right away, or it is lost. A solution is to install a solar battery for off-grid systems. This is charged during the day and used at night, but it is more expensive.
- Weather Dependent
Solar energy is less efficient on cloudy and rainy days and cannot be collected at night. This means electricity production during these times can be lower or nonexistent.
Yet thermodynamic panels are available if you need your water-heating system to operate at night or in winter.
- Some Negative Environmental Impacts (Visual and Air Pollution)
Pollution from solar energy is far less than that from traditional, non-renewable energy sources, such as coal, oil, and gas.
Some toxic materials and hazardous products used during the manufacturing of solar PV systems can have negative environmental impacts.
There are also greenhouse gas emissions associated with the transportation and installation of solar systems.
Many people believe solar installations can be an eyesore and don’t like how they look on roofs. Modern panels are slimmer, darker, and designed to blend in with the surrounding materials.
In-roof solar systems are also available to replace your tiles and sit flush with the rest of your roof.
What Are Solar Panels?
Solar panels are usually placed on roofs or ground mounts to generate direct current (DC). This is converted into alternating current (AC) by an inverter for use within your premises or for the National Grid.
They consist of:
- Photovoltaic (PV) cells
- A protective glass cover
- An encapsulant layer
- An aluminium frame with a junction box for wiring.
How Do Solar Panels Work?
Solar panels work by capturing sunlight when it hits the Earth’s surface. PV panels are installed on homes, buildings, and solar farms to turn sunlight into electricity.
They’re made of solar cells containing a semiconductor material, such as silicon.
When sunlight shines on them, it excites particles called electrons, generating electricity. This charged electric current passes through an inverter into your home or building as a power source.
This means solar PV panels will only work during the day, not at night.
What Are Solar Panels Used For?
Solar panels convert sunlight into electricity that powers homes and businesses. This may include lighting, appliances, machinery, and hybrid or electric vehicles (EVs).
What Are the Pros and Cons of Solar Panels?
Reducing your energy bills, increasing your independence from the National Grid, and limiting your carbon footprint are some of the benefits of solar panels.
This is offset by potential drawbacks, including costs, the space required for their installation, and reduced efficiency at certain times of day and year.
| Pros of solar panels | Cons of solar panels | |
| Financial | Low maintenance costReduced energy billsCan increase property valueIncreased affordability Can earn money back by selling surplus electricity | Can be expensive to install Can take a long time to earn back the money Potential extra costs (solar battery, repairs, and maintenance) |
| Personal (individual level) | Energy can be stored using batteries for when you need it Increases independence from the National Grid | Having enough space to install themRequires maintenance |
| Reduces carbon footprint Can generate electricity most of the year-round | Can be land-intensivePollution during manufacturingCan’t produce electricity at night |
The main positives and negatives of using solar energy, including financial considerations, environmental impacts, and its impact on people at the individual level.
Check out our guide on the top 5 things to consider before buying solar and battery storage.
What Are the Advantages of Solar Panels?
Long-term cost savings, reduced reliance on the National Grid, and the ability to store generated electricity for use during peak hours are among the advantages of solar panels.
Here are some of the main benefits of solar panels:
- Low Maintenance Costs
Solar energy systems don’t need much maintenance. Keeping them clean a few times a year is usually enough.
Reliable solar panel manufacturers usually offer a 20- to 25-year warranty, meaning you’re well protected if they need repairing.
Wear and tear is minimal, as there are no moving parts. The inverter might need to be replaced after 5 to 10 years, as it continuously converts sunlight into electricity and heat.
Cables may require basic maintenance to keep your solar system running smoothly and efficiently.
- Reduces Energy Bills
Producing your own source of electricity via solar power makes you more self-sufficient. This source of energy is free, reduces your dependency on the National Grid, and lowers your energy bills.
How much you save will depend on the size of your solar installation and how much energy you use.
You can also receive money for any surplus energy you export back to the grid using the Smart Export Guarantee (SEG) scheme.
- Can Produce Electricity Most of the Year
Temperature has little impact on energy production, meaning solar panels can work pretty much all year-round.
Snowfall can boost efficiency, as melting snow helps to clean the panels. Plus, snow has a higher albedo, increasing the amount of reflected sunlight hitting your panels.
What Are the Disadvantages of Solar Panels?
Disadvantages of solar panels include their cost, efficiency, and potential space requirements.
Here are some of the main drawbacks of solar panels:
- Can Be Expensive and Take Time To Pay Back
The cost of buying and installing solar panels is not cheap. The average cost of a home solar panel system in the UK is around £6,100 to install, with starting prices around £5,000.
Yet, leasing options and government grants are available to reduce your initial outlay.
Solar panels are a long-term investment. You’ll likely need to live in your property for several years before the system pays for itself, so it’s better suited to property owners than to renters.
Modifications to your property could also incur additional costs, such as replacing the roof with metal, tile, or asphalt shingles to make solar installation easier.
- Can Take Up a Lot of Space
Solar PV systems need a lot of space, as some roofs are not large enough to accommodate the number of panels needed for sufficient energy production.
Some roofs also have obstacles, such as windows, which make installation difficult. Those with a flat roof are less likely to face this issue.
An alternative could be to install your solar system at ground level. But you’d need a substantial amount of land to do this. For maximum efficiency, it should receive sunlight for most of the day.
Instead, you may opt to install fewer panels in the sunniest parts of your property to maximise the space you have.
- Less Efficient at Certain Times of the Day and Year
Solar panels won’t produce electricity at night and can be less efficient during cloudy days and stormy weather.
If you intend to rely entirely on solar energy to power your property, you can install a solar battery in your system. This allows you to store any unused electricity generated during the day, providing reserves when the sun isn’t shining or during peak hours when demand increases.
It also provides backup during a power cut, allowing you to run essential appliances and systems without interruption.
A solar battery is one of the most expensive parts of a solar energy system. Unlike solar panels, batteries can wear out and need maintenance to last.
Visit our Solar Advice Hub for the latest insights and research into solar energy in the UK, including the pros and cons of solar energy and solar panels.
How Can Apex Doma Help With Solar Panels?
There are many factors to consider when weighing the advantages and disadvantages of solar energy for your home.
Solar power is an investment that can deliver significant financial gains over time, such as lowering your energy bills, enabling you to sell surplus electricity back to the grid, and even increasing your home’s value.
But we also appreciate that the initial outlay can seem quite daunting, especially since it may take time to reap the benefits.
We’re here to talk you through solar panel installations, address any queries you may have, and help find a solar service that’s right for you with a free, no-obligation quote.
Our team of experienced, dependable experts is here to connect you with trusted, MCS-certified solar installers who’ll handle everything.
Contact us today with any questions about solar power and solar panels.
Final Thoughts on the Advantages and Disadvantages of Solar Energy
Solar energy can help you become more sustainable by reducing your carbon footprint, increasing your energy self-sufficiency, and cutting your energy bills.
This approach is better for the environment by limiting your fossil fuel consumption and reliance on the grid, which in turn helps bring your energy costs down.
There are some disadvantages to solar energy, including higher costs and reduced efficiency at certain times of day and year. But all things considered, the positives outweigh the negatives.
The benefits of solar power are clear as we move towards a sustainable future, especially when viewed in the long term.
FAQs About the Advantages and Disadvantages of Solar Energy
Solar energy is a renewable energy source that comes from a natural resource (the Sun) and replenishes itself.
As long as the sun is shining, we can continue to harness its energy to generate electricity.
The average efficiency level for residential solar systems is about 20%..
Cheaper, less complex solar systems tend to be less efficient.
For example:
Monocrystalline solar panels (15% to 22% efficient)
Polycrystalline solar panels (15% to 20% efficient)
Thin-film solar panels (10% to 20% efficient)
The efficiency of solar panels can be affected by environmental factors, such as irradiance (the amount of sunlight received), air temperature, and shading.
It can also be affected by the quality of your setup and maintenance, orientation, and tilt, and the efficiency of the solar panel’s inverter.
10 advantages of solar energy are:
Renewable energy (it won’t run out as long as the Sun shines)
Free (you don’t have to pay for sunlight)
Clean (limited pollution levels)
Low-carbon (reduced greenhouse gas emissions)
Low-impact (in terms of noise pollution)
Increased affordability (the more that’s invested into it)
Offers a diverse range of applications, especially in hard-to-reach areas
Encourages people to be less dependent on the National Grid
Longer lifespan and improved efficiency compared to previous years
Can provide energy on a variety of scales, from local to nationwide
Can be expensive to install
Weather-dependent and less efficient on cloudy, rainy days
Doesn’t work at night
Needs a battery for storage (otherwise, electricity is lost)
Won’t solve energy demand alone (needs investment in other forms of energy production)
Can take up a lot of space
Can cause some pollution during manufacturing, transportation, and installation, and is a potential eyesore
Overall, solar panels are good for the environment because they’re a renewable energy source. Clean, natural, low-carbon sources of power can be harnessed to generate electricity. This is the opposite of non-renewable resources, such as coal, which involve the burning of fossil fuels.
Consequently, the greenhouse gas emissions pollute our atmosphere, contributing to the greenhouse effect and climate change.
Solar power comes with virtually no emissions. It’ll never run out as long as the Sun shines, so we can keep using it without depleting a finite resource like oil or gas.
There is environmental pollution from the manufacturing, transportation, and installation of solar panels. But this is a fraction compared to that produced by traditional combustion-based electricity production, such as fossil-fuelled power stations or nuclear reactors.
Solar energy is fairly reliable as the Sun’s energy is virtually unlimited. Its efficiency decreases during periods of poor weather (such as cloudy or rainy conditions), but it’s still operational.
Solar energy is more reliable than in the past due to technological improvements and a better understanding of how solar power works.
While solar panel output isn’t as consistent as traditional electricity generation methods, modern technology and design have made it a highly dependable option.
Solar panels can be cost-effective, depending on several factors.
Initial outlay cost – this is the most expensive part, averaging £6,100 (though this can vary depending on the size and complexity of the solar system you choose).
Saving money on your bills – using the electricity you generate could save you between £190 and £350 a year (depending on your level of energy consumption).
Export tariffs – through the Smart Export Guarantee (SEG), you could sell back any surplus electricity to the grid, depending on your provider’s rates and whether you’re eligible.
Breakpoint – it could take 10 years for a typical home to recoup the installation cost of solar panels. This will vary depending on where you live, when you use your energy, and your average energy consumption.
Suitability – not all properties are suitable for solar panels, as some will be more efficient at producing electricity than others. Factors such as tilt, orientation, shading, space, and roof type can affect the efficiency of solar panels.
Solar panels could help you save hundreds of pounds a year on your energy bills. Despite a relatively high installation cost, they do pay off over time, with an average of 10 years to break even.
Generating your own electricity on-site reduces your reliance on the National Grid, resulting in further savings. Plus, you can export surplus energy back to the grid as an additional source of income.
Finding a reputable, certified installer, such as Apex Doma, enables you to select a product that’s right for you and answer any questions you may have about the advantages and disadvantages of installing solar panels on your premises.
