PV Panels (Modules)

Photovoltaic panels are the transformation of solar energy (light) into electrical energy, also called solar power.

In order to generate solar power, a solar power system is needed, which can be mounted either on roofs or on the ground.

A solar power system consists of solar power panels, one or more inverters, as well as a mounting system. Solar irradiation creates a direct current in the solar cells. The direct current is then transmitted to the inverter and is then transformed into grid-compatible alternating current. The produced solar power is fed into the public grid and is compensated by the local grid operator per kilowatt hour (unit).

A module consists of several rows of solar cells that are electrically connected with the help of strip solders. It consists of several layers of material: a special solar glass to provide stability, a translucent intermediate film on which the rows of cells – so-called strings – are placed, another intermediate film and a stable backside film. The films are connected to the glass through lamination, so that the sensitive solar cells are protected against weather conditions.

Photovoltaic systems of a good quality are hardly susceptible to errors and require little maintenance. Long-term studies show that solar modules can still produce solar power, even after 30 or 40 years. Most PV panels give a performance guaranty of 25 years.

Aleo Solar gives a product guarantee of 12 years and a performance guarantee of 25 years on their panels.

Basically, solar power systems can be installed on almost all roofs. The best way to decide how they can be installed is through a site visit.

The only maintenance required is the cleaning of the modules regularly with water only, especially after one of the ‘dusty’ rainfalls that are quite common in Malta.

Insurance on your PV system is highly recommended, since ‘Acts of God’ are not covered by any warranty offered by manufacturers.


Micro inverters are smaller inverters designed for the purpose of one panel. They in fact are installed directly behind each panel. Micro inverters possess a number of benefits over traditional large inverters:

  • Greater reliability/production – If one or more panels are shaded or experience a loss in performance, the rest of the system will function independently.
  • Better safety – With micro inverters, low AC currents are the output from the panels, therefore no dangerous DC wiring on the installation location.
  • Better monitoring data – Each micro inverter is capable of producing useful information from each solar module, enabling monitoring of module condition, production and performance.
  • Greater design flexibility – Wiring design is simpler and expansion of the system is simpler.
  • Better warranties – Micro inverters are supplied with a warranty of approximately the lifetime of the PV system, due to the use of thin film capacitors only (No electrolytic capacitors, no opto-couplers, no fans and moving parts).

A 20 year replacement warranty is offered by the manufacturer Enecsys as long as the monitoring system is installed.

The guarantee will be 5 years.

We will install a black box called a gateway to your internet router for the monitoring to be able to work.

An internet connection via a router.

Yes, if you want us to be able to monitor your system better and provide an efficient maintenance service.

Thermodynamic Panels

The system works by extracting heat from the atmosphere day and night in sunshine, rain and wind. The thermodynamic panel is the component installed outdoors to absorb the heat needed and transfer it on to a refrigerant gas that passes through it. The heated gas is then transferred to the compressor unit (normally installed indoors) where it exchanges the heat from the refrigerant gas to the water stored inside the unit. Finally, the hot water is then transferred to the needs of the client.

The thermodynamic principle is not new, it was developed by French physicist Nicholas Carnot in 1840. The principle is the same as the one used in a refrigerator, but in reverse.

The thermodynamic panel has a guarantee of 5 years and the compressor unit has 2 years offered by the manufacturer.

The units available are 100, 200 and 300 litres.

Yes as long as the person is qualified in the installation of refrigeration systems.

It is preferred to be installed indoors, but if there is no other option a protective casing must be installed for the unit.

No, the panel extracts heat from the air not the sun like a solar water heater. This is why the thermodynamic panel is a better option than a solar water heater because you will generate hot water day and night in sunshine, rain and wind. If solar radiation is available the panel will work more efficiently.

Yes, the panel can be installed vertically on a wall as well as flat on the ground.

Yes, the compressor unit has a 500W power output. It is much more efficient than a traditional electric water heater.

It is designed to provide 100% of the water heating needs of the household.