Hi, can i get total self sufficiency from using esb, by using pv panels, and basically what requirements would i need. Return of investment is not a major criteria for me. removal of the need for ESB is.Thanks. Tim

Hi, can i get total self sufficiency from using esb, by using pv panels, and basically what requirements would i need.
Return of investment is not a major criteria for me. removal of the need for ESB is.Thanks. Tim

1 answer

Hi Tim, Yes – you can become completely self-sufficient and we often do this on sites in remote areas where there is no grid access. In reality, solar alone will struggle to meet your needs during the winter – you usually need more light and electricity in the winter, but you get less energy from solar at that time. You can overcome this to some extent by using more panels at a steeper angle, but I would think about having a small wind turbine as well.
A mix of batteries, solar, wind, and even a backup diesel generator are all usually required. The diesel seem a bit unenvironmental, but if you have a water cooled unit and you bring the heat from it into your house, you will be running this generator a lot more efficiently than the rate at which ESB converts power (where all the heat is usually sent up a chimney). If you really don’t want a generator, then you can increase your battery bank and may have to curtail your usage at times when there are a number of dark windless days in a row.. Likewise, you can avoid the wind turbine if you don’t want one, but you will use the generator a bit more often. 
You need to assess the energy requirements that are likely, and given this and information about your property, wind speed data (available online) etc., we can design a system with a small wind turbine solar, and a generator. 
Although we no longer produce wind turbines, we have a sister company (click here) which designs off-grid controller and we work with other wind turbine manufacturers on such projects. 

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