Solar PV: Pros & Cons of Solar Photovoltaic Systems
The sun radiates enough energy in a single hour to power the whole planet for a year, but we are not yet able to capture enough of it to make this possible. A big reason for this is that many people are still sceptical about the pros and cons of solar PV systems. By installing solar PV or solar photovoltaic panels on your roof you can harness the sun’s energy to power your home electricity and even an electric car. This can help to significantly reduce your energy bills and, because you will be using less fossil fuel-generated electricity and petrol/diesel, reduce your carbon footprint.
如果你决定是否你应该d be investing in solar energy for your home, here are the most important pros and cons to consider.
Pros of Solar PV Systems
Solar PV systems can generate a significant amount of the electricity you need in your home and, as this electricity is free, you will need to buy less from your supplier. The amount you’ll save will depend on how many panels you install, how much sunlight your home benefits from and how much of the solar electricity you are able to use. If you are not at home during the day when the electricity is being generated anything not used will be fed into the national grid. However, if you also install a solar battery to store the electricity you don’t use during the day so you can use it at night, you can maximise your savings.
Solar PV systems qualify for payments from the government
If you have or are planning to get an electric vehicle, you can get a home charging point installed and power it with solar electricity, i.e. you can run your car for free!
Solar PV systems are easy (and cheap) to maintain
Solar panel efficiency has improved rapidly since they first hit the market and now the best models can reach efficiencies of up to 25%. The efficiency will decrease as the cells in the panels degrade over time, but the manufacturer will guarantee a minimum efficiency for the warranty period.
Solar PV systems will generate electricity even on cloudy days
The cost of solar panels has dropped year on year and today are over 60% cheaper than they were in 2010. Find out more in How Much Do Solar Panels Cost?
Solar PV panels can add value to a property
Many home buyers see solar panels as a pro when looking for a property to buy as they can look forward to cheaper energy bills.
Solar PV panels have a high upfront cost
While prices are lower than ever, installing solar panels, inverter and wiring still requires a significant investment of £6,000 on average which can be a barrier for some people.
Solar PV panels won’t generate electricity at night
However, if you install a solar battery alongside the solar panels you can store the surplus electricity from the daytime so you can use it at night and increase your savings. Find out more about solar batteries.
While solar panels will still generate electricity on cloudy days, the efficiency level will drop which will reduce your savings.
Solar PV panels require a lot of space on the roof
Solar panels should be installed on a south facing roof for maximum electricity generation and do take up a lot of space on the roof, especially if you want to install enough to cover most of your electricity demand. In addition, some people don’t like the look of solar panels on a roof which is a matter of personal taste, but it is possible to install ground-based solar panels in some cases.
您可以在选择哪些 - 如果有的话 - 适合您之前，可以比较他们的专业建议和价格。