The advantages of installing solar panels
Installing solar panels on the roof of a building offers many economic and ecological advantages. By using renewable, decarbonised energy like the sun to produce electricity, you can significantly reduce your environmental impact and bring down your energy bills. As part of a bioclimatic construction made to RE2020 standards, an autonomous solar installation can also score highly in terms of complying with the regulations in force.
Each solar installation requires some project management upstream so you can get the most out of it, as well as professional support to make the right choices and carry out the administrative procedures.
How is a photovoltaic panel installed ?
The installation of solar panels must be carried out by roofing and cladding professionals who will ensure perfect results. There are two ways to install a photovoltaic panel: overlaid or integrated.
- Solar panels can also be fixed straight onto the tiles of an existing roof. This is the cheapest solution, because it is faster, but the panels are visible.
- Integrated into the roofwork, photovoltaic panels simply replace regular roofing tiles. They are installed during the roof construction or renovation phase. In this case, it makes financial sense to include the panels in the overall cost of the work.
The roofer fixes rails to the roof to accommodate the structure, then installs the solar panels themselves. They then connect the inverter, regulator and meter before laying the wiring. If you plan to sell back any surplus power, you need to request a connection to the grid.
Which panels should you choose for a standalone solar system?
What is the difference between a photovoltaic panel and a thermal panel?
Photovoltaic panels capture sunlight and convert it directly into electricity for use by electrical appliances, heating systems and domestic hot water systems. Thermal panels capture the sun's thermal energy, which is then mainly used for heating and domestic hot water systems via a hot water tank.
Photovoltaic panels have the advantage of working even in cooler temperatures and low brightness levels. Their yield is obviously lower, but not insignificant. It is advisable to use storage batteries to avoid power outages.
Which photovoltaic panels should you choose for a solar system?
Monocrystalline solar panels are more efficient than polycrystalline solar panels as they have a 16% to 24% yield rate compared to 14% to 20%.
With high electrical power (rated kWc) and high photovoltaic panel efficiency, your standalone solar installation will be efficient and cost effective.
Criteria to consider for your solar installation
- Building requirements: for optimal efficiency, install enough solar panels with sufficient power to cover all your energy consumption, or even more if you want to sell the surplus electricity to an energy supplier.
- Product quality: always opt for certified products, preferably made in France and guaranteed. As the quality of your solar panels is paramount, the quality of the equipment is no less so.
- Direction: to capture maximum sunlight, the solar panels must be south-facing. As this is not always possible, a south-east or south-west direction will also offer efficient yield rates. An east or west-facing installation will enjoy full sunshine in the morning and afternoon, but the yield will be a little lower. However, north, north-east and north-west-facing panels receive too little light to be of use to a solar installation.
- Tilt of the solar panel: for maximum efficiency, it must be at an angle of 30° to 35°. If the slope of the roof is greater or small than this, a professional will be able to adjust the solar panel installation to achieve the best angle.
- Shaded areas: any overhanging branches of nearby trees will need pruning if they create a shadow over the panels.
- Company values and commitments: A serious supplier offers a minimum 25-year warranty, a personalised quote and follow-up. TERREAL, a specialist in roofing and green and innovative solutions, supports its customers in their efforts to make the right energy choices (official registration, consultations, connection to the grid to sell back surplus energy, financial support etc.).
You may be interested in these articles
The Terreal solar offer for professionals
We are rolling out our Demain Tous Solaire programme to help solar energy progress even further. It includes a wide range of services to ensure that roofers and electricians fit our systems professionally, to help you sell the most suitable solutions and to ensure that your customers are satisfied. Becoming a partner in our programme gives you access to exclusive tools.
Everything you need to know about RE2020 regulations
The RE2020 regulations came into force at the beginning of 2022. They have been put in place to gradually replace RT2012 by setting more ambitious targets for reducing greenhouse gas emissions from new public and residential buildings, during their construction as well as their use. The RE2020 regulations also take adapting the building to climatic conditions into account.
The Terreal solar offer for individuals
For more than 10 years, Terreal and its subsidiary GSE Integration have been developing a complete range of innovative and patented solar roofing solutions for residential use. These solutions are compatible with any architectural decision or style of roof, as well as with all the roofing tiles and slates available on the market, in terms of waterproofing, integration and aesthetics.
What maintenance do solar panels need?
Maintaining your solar panels is easy, but they must be cleaned regularly and following certain rules, particularly with regard to safety. Economical and resistant, photovoltaic panels must be cleaned on average twice a year, following a few precautions to avoid damaging them.
Does the efficiency of solar panels offer an attractive proposal?
Solar panels can be used to produce renewable energy without any greenhouse gas emissions. Given that solar panels are a long-term investment, knowing how efficient they are is essential. The aim is to be able to bypass the power grid and produce your own electricity in a drive towards autonomy.
Solar panels in the north of France – a profitable investment
Let's put a stop to any misconceptions here and now – installing a solar panel in the north of France is profitable! Whether you live in Lille, Paris, Nantes or Strasbourg, there is a whole host of advantages to investing in solar energy. Solar panels work on levels of brightness rather than heat from the sun. Because of this, they offer a high yield even on the roofs of houses and buildings located in the north of France.