Energia VerdeAs questões globais com as emissões de CO2 nos fazem pensar e repensar sobre nosso estilo de vida atual e a pegada que deixamos neste planeta. Comum sistemasolar off-grid você gera100% de EnergiaVerde e sua casa estarálivre de emissões de carbono!
Chega de conta de energiaComo você estarágerando sua própriaenergia, você não receberá mais contas de luz enão terá que lidar com o aumentodos preços da energia.Que alívio!Com a independência energética, você ganha total estabilidade orçamentária, segurança e conforto.
Custo inicialO preço de um sistema solar off grid é muitas vezes o dobro do preço de um sistema solar conectado à rede, pois você precisa de baterias, uma quantidade maior de painéis solares, um inversor maior e, em alguns casos, até mesmo um gerador.
Consciência de usoQuando você vive fora da rede, vocêserá mais consciente sobre a maneira como você usa sua energia.O que não é particularmente ruim! No entanto, você deve ter em mente que o armazenamento de energia pode ser limitado, e sempre haverá um risco potencial de ficar sem energia, incluindo sua energia armazenada, especialmente em dias mais nublados.
É importante explicar a um especialista qual é a sua rotina diária e aqui as suas necessidades energéticas. Ele projetaráseu sistema para atender às suas necessidades de energia, e também é importante que você entenda quanta energia você deve gerar ao longo do ano,para que você saiba quando seu sistema está com baixo desempenho. Desta forma, quaisquer problemas podem ser resolvidos e resolvidos rapidamente.
Ainda está curioso sobre os sistemas solares? Confira nosso vídeo no com Tiago Almeida da BEnergy
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H540 – Casa da Fandinga
H611 - Vivenda da Catraia
In previous articles we dealt with the options of going "off-grid" or staying "grid-connected", and the options between systems with or without batteries.
Once this is defined, we can finally start specifying what is required and possible for installation.
Components and installation
These can be placed on the ground or on the roof, but have to face as much southwards as possible or be in a combined east-west configuration. Even more important is being free of shade.
The second system has several advantages above the first: It is more efficient for leading a higher voltage through the cables from the roof, it has no exposed sensitive electronics on the outside, and it does therefore not require special or regular maintenance. Apart from that, the centralised inverters usually offer more management and monitor options.
Mentioned central inverter should ideally sit in the house or garage or even in a special box, but always in a moist free and ventilated, space. The same applies for eventual batteries. Apart from that there will be two safety boxes, one for AC and one for DC, as well as a smart-meter. All that stuff ideally will not be too far away from the main switchboard.
From the inverter to the main switchboard goes another heavy cable, being an AC one. And finally, a thin internet cable should be connected between the smart-meter and the router in the house. All this can be lead in discrete housings running on the outside of the walls, but will still be visible.
The only alternative to that is to grind channelling for the hiding of conduits, fill those up with cement and paint them over.
Obviously, this calls for the recommendation of timely planning for anyone who starts refurbishing or building.
Selling surplus energy back to the grid is an option, but bluntly put, for individual households the prices obtained lately do not justify the bureaucracy involved. Economically speaking it is better to focus on the return-on-investment by the supply of energy for one´s own consumption. Maybe this will change in a future when the grid infrastructure can better handle return loads, and also when energy companies find better ways to store energy.
Via the smart-meter one can measure how many surpluses eventually occurred, and see when a contract with the grid supplier and the installation of a bi-directional meter becomes interesting. Apart from this meter to be supplied by the energy company, no further adaptations are required from most PV-systems.
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