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Photovoltaic or solar thermal

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Photovoltaic or solar thermal: differences, incentives and purchasing concessions. What to evaluate and economic returns in terms of energy savings.

Photovoltaic and solar thermalare two technologies that allow us to use solar energy to improve the energy efficiency of our home and save on bills. How? We tell you by explaining in simple words the difference betweenphotovoltaic and solar thermal.

Photovoltaic system

Thephotovoltaicit allows us to produce electricity for immediate use, store in an accumulator (batteries), feed into the national electricity grid or sell. In the home, a photovoltaic system can be easily housed on the roof both with classic solar panels and with more advanced roofs that take the name ofintegrated photovoltaic.

Solar thermal system

Thesolar thermalallows us to produce domestic hot water by reducing the use of the electric water heater or boiler, plus thesolar thermalit saves us on domestic heating in winter, on reaching the high temperatures of the water used for the washing machine and dishwasher. In addition, a new generation of solar systems allows us to save on both winter heating and summer cooling, in this case we are talking aboutsolar cooling.

Photovoltaic, incentives and concessions

Photovoltaic and electricity savings
By making the most of a well-sized photovoltaic system and combining it with energy class A +++ appliances, you can save up to 70% of the expense incurred for the payment of the electricity bill. If this kind of incentive is not enough, know that for those who decide to install a photovoltaic system home opens up a large number of possibilities. First of all, there is the possibility to access thetax deductions at 50%for the purchase and installation of the system. For all information about the incentives on the purchase of a photovoltaic system, we refer you to the articledeductions for photovoltaic system.

Photovoltaic systems are composed of four main components, such as:

  • photovoltaic panel or module
  • inverter
  • protection and control panel
  • bidirectional electric meter
  • accumulators (optional)

Regarding the photovoltaic modules, there are different technologies with respective yields and efficiency. You can choose based on yield or on aesthetics, the market offers countless solutions. The accumulator is a recommended purchase (albeit expensive) only for those who intend to focus on self-consumption of energy but, for those who have a photovoltaic system, self-consumption is not the only possibility. Who has a photovoltaic system can access various options that guarantee energy savings, economic returns and / or profits based on the yields obtained; in particular, those who have a photovoltaic system can he:

  • sell photovoltaic energy by transferring it to the grid
  • take advantage of the so-called on-site exchange
  • take advantage of exclusive self-consumption with accumulators

To learn more about these three possibilities, we refer you to the articlePhotovoltaic energy sales.

Solar thermal, incentives and concessions

Both technologies enjoy discounts for purchasing. If for the photovoltaic system it is possible to aim for tax deductions, for thesolar thermal, in addition to tax deductions at 50%, economic benefits are available provided with the Thermal Account. The page is available for all informationThermal account 2016.

Asolar thermal systemmanages to transform solar energy into domestic hot water and, generally, consists of two parts:

  • Solar collectors, ie the panels
  • Solar boiler, i.e. the boiler, a water storage tank

A good example of how to integrate solar thermal into domestic heating can be done assuming the addition of a hybrid heat pump heating system, a pellet system or the classic gas boiler. Those who decide to install a high-efficiency solar thermal system should assume the addition of apufferso as to maximize the use of hot water produced by the solar collector itself.



Video: Photovoltaic vs Solar Thermal (May 2022).