2nd October 2023

Why install photovoltaic panels on my house?

You've heard so much about them that you can't ignore them any longer. Especially as you now see them just about everywhere… except on your roof! Now is the time to take a more serious interest, especially with the subsidies offered by the State, which are more than attractive if you want to install photovoltaic panels to generate electricity for your own use. In this article, we give you the lowdown… happy reading!
Ouvrier qui installe des panneaux solaires photovoltaïques sur le toit d'une maison

Solar panels: operation, benefits and financing

Rising energy costs and environmental issues are the main arguments for investing in renewable energies.

What's more, people wanting to produce more themselves and use what they produce is nothing new (growing their own vegetables, baking their own bread, keeping their own chickens, etc.), and it reached a peak during the recent pandemic.

As far as energy production is concerned, we know that public subsidies and private aid mean that photovoltaic installations for homes can pay for themselves in just a few years. That's why it's an alternative that should not be overlooked when it comes to one's energy supply.

  • How do these solar installations work?

  • What costs are involved?

  • And what benefits do they have for our home?

How do photovoltaic panels work?

Photovoltaic panels are generally installed on the roofs of houses, although they can also be found elsewhere. On carports, garden sheds, floating on lakes or placed on fields... solar panels can be used on any large, unoccupied surface.

These are modules made up of solar cells that convert sunlight into electrical energy, so wherever there's sunlight, photovoltaic panels can be installed.

8.5 m² of photovoltaic surface area is enough to meet one person’s energy needs.
Source : viessmann.lu

The advantages of installing solar panels

First of all, this technology is designed for the long term, meaning it has a fairly long lifespan.

Secondly, the energy produced by the modules can be used for your own use, or it can be fed into the public grid if there is a surplus. It is then bought by an energy supplier and resold, accelerating the return on the initial investment in just a few years. 

What's more, by installing panels on your home, you're reducing your CO2 emissions and helping to protect the planet, adopting a decidedly responsible attitude towards the environment.

Also, when you combine the panels with a heat pump, you can create heat from electricity at a lower cost.

Finally, you have no losses, because energy that is not consumed directly can be stored in batteries, and if you have a large surplus, you can simply sell it on.

The utility of domestic batteries

Depending on the power of the system and how much electricity you use, your solar panels should generate enough energy during the day to run various electrical appliances at the same time – such as a dishwasher, tumble dryer and washing machine.

They might even cover all your energy needs while producing a surplus. This surplus can be stored in a battery. Once the sun goes down, energy is drawn from this reserve. If you don't have a battery or if you produce more than you can consume and store, the surplus is sold on. If your battery power is insufficient to cover your night-time consumption, the supply will be covered by the public grid.

Financing solutions

The Ecoprêt loan has been specially designed to finance environmentally responsible property projects at an attractive rate. So when you renovate your property or simply want to install photovoltaic systems at your home, you can borrow up to €100,000 at a low interest rate for up to 120 months.

State aid

The government has introduced a number of grants and subsidies to help fund ecological projects. These can be viewed on the klima-agency website and are a real source of financial assistance that should not be overlooked: they can cover up to 62.5% of the investment, not counting any municipal grants and private aid granted by the NovaNaturStroum Fund, for example.

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