Solar panels are a great investment for a number of reasons. They can help you save money on your energy bills, they’re good for the environment, and they can increase the value of your home. If you live in a sunny area, you can produce your own electricity and sell it surplus back to the grid. This way you can save a lot of money on your energy bills, and it’s a great way to be more environmentally friendly.
Solar panels can also increase the value of your home. If you install solar panels, you’ll be able to sell your home for more money than you would without them. This is because solar panels are becoming increasingly popular, and more and more people are looking for homes with solar panels installed directly.
There's no doubt that the installation of solar photovoltaic panels can save you a significant amount of money in the long run; however, this free electricity is only available once you've accounted for the cost of getting the panel.
If your production is higher than your consumption, the surplus energy will be distributed to the grid.
In the other way, if your energy usage is higher than the energy that the panels are producing on overcast days or on dark evenings. At these moments, you will be charged by your energy supplier in the normal amount for electricity that you import from the national grid.
So there is no right answer, it will depend on your installation and your own electricity consumption.