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Malta

A Brief Analysis of Malta’s nascent solar market

The Maltese consume an estimated 2.12 billion Kilowatts-hours of electricity per year. This energy consumption rate is the second-lowest across all European Union member states. Malta does not have any domestic fuel resources thus, forcing it to rely on imported fossil fuels. However, the country is working towards a renewable energy future under the European Union’s energy efficiency directive stipulations. What is the current state of Malta’s solar market?

As of 2017, renewable energy accounted for only 4.9 % of the Central Mediterranean state’s total installed capacity. This was one of the lowest renewable energy capacities in Europe. Fortunately, the Maltese Ministry of energy stepped up its renewable energy adoption efforts. At the end of 2019, Malta’s installed solar capacity stood at 154 Megawatts.

There are no recent statistics on the Maltese installed capacity. Still, the country’s rooftop PV sector is growing fast due to the government’s support. Essentially, this nascent solar market is most likely to continue growing and offer more lucrative opportunities for solar installers.

Solar equipment supply capacity in Malta

Malta has a small number of solar equipment suppliers that mainly deal with common equipment categories such as solar panels. This may limit your range of options in case you have a project lined up. Nevertheless, there is no need for concern because Solarfeeds has got you covered.

As a leading e-commerce marketplace for solar equipment, we host several leading equipment suppliers. If you don’t find the equipment needed locally, you can choose to import affordable and quality equipment from any of our partners. Just go to our inquiry page and request quotes.

Ports and logistics in Malta

Any solar installer or professional will agree that ports and quality services are essential amenities in any market. Well, most of Malta’s logistics service providers are highly experienced and dependable. You also have access to two major ports, namely;

  • The Valletta Grand Harbor
  • The Port of Marsaxlokk

Electric Breaker used for below projects in Malta

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Electric Breaker

Electric Breakers

When installing a solar panel system, you have to be familiar with the electric breakers and how it works with a solar PV system to avoid future electric problems. The electric breaker is one of the main components of a solar power system that provides safety mechanisms. If ever the electrical wiring of your system has too much current flowing through it, these breakers can easily cut the power until your solar installer can fix the system’s problem. 

For today’s article, we will discuss electric breakers and their function in solar photovoltaic systems.

What is an Electric Breaker?

An electric or circuit breaker is an electrical switch designed to protect electrical circuits from damage caused by overloading of current or a short circuit. The basic function of an electric breaker is to prevent the current flow once protective relays detect a fault in the system. 

Although it is frequently interchanged with a fuse, which is the simplest Over Current Protection device (OCPD) in electrical circuits, a circuit breaker, is a much-evolved type of device that interrupts the current flow. The main difference between the two is electric breaker is resettable and the fuse is not. The fuse sacrifices itself while protecting the system to overheat, while the circuit breaker can withstand hundreds and thousands of operations. Another difference is that electric breakers are used with relatively higher currents. 

Components of Circuit Breaker

A circuit breaker system is composed of three parts. These three components are the sensing system, relay, and the combination of contacts and the contact actuator. A sensing system is responsible for detecting an overload situation, while a relay is responsible for transferring the information to the switching arrangement, and the combination of contacts and the contact actuator. This electric arrangement is usually observed in power transmission and distribution networks dealing with very high currents, voltages, and powers. 

Circuit Breakers Calculation in Solar Panel Systems

When connecting circuit breakers to the PV system, you have to follow the recommended calculations to avoid future problems and damage to the entire system. The recommendations for using overcurrent protection devices including circuit breakers in solar modules against overloading conditions are given in IEC 60269-6 (volume 6 of IEC 60269-6) and also UL 248-19. 

For circuit breakers, IEC recommends a 20% and 25% margin in voltage and overload current. Most of the time, the ratings are specified by the solar manufacturers at given ambient conditions. If the temperatures exceed this given value, derating must be applied according to the manufacturer’s specifications. 

When it comes to breaker sizes for solar panels, NEC requires the breakers to be sized at 125% of the inverter’s rated output. So a 7680W inverter that outputs 240V, outputs 32A (7680W ÷ 240V = 32A). That requires a 40A breaker (32A x 125% = 40A).

Final Thoughts

If you owned a solar panel system at home,  you have to understand how circuit breakers work to prevent catching fires at home. These devices are one of the major components of the PV solar system as they protect the system wiring from getting too hot and accidentally catch fire if short circuits occurred. Thus, understanding the breaker itself and its proper calculations in the PV system should be done.

Electric Breaker Suppliers in Your Country

Types of Electric Breaker Suppliers

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