To compare efficacy of different types of power generation, it has to be done a load factor basis as these are intermittent sources of electricity. This is standard stuff - snippet below, from the Government website (Google "Load factors for renewable electricity generation")
In a domestic situation, it is subject to too many variables to know whether you'll be able to meet the stats above, so using these as a yardstick to determine how big an installation is required is reasonable.
The main challenge with solar, is that in the UK, when you need the power, it's unlikely to be generated - i.e. the doldrums of winter and early spring. Battery storage isn't cheap, and will likely need replacement at least once during the lifetime of the solar panels. This should therefore be included in any calculations. Being "off grid" is a different proposition to that of thinking you'll save money, or eco considerations.
People should be clear on their aims, and include all information relevant in any implementations, as to be frank there are a lot of cowboys looking to fleece you.
In a domestic situation, it is subject to too many variables to know whether you'll be able to meet the stats above, so using these as a yardstick to determine how big an installation is required is reasonable.
The main challenge with solar, is that in the UK, when you need the power, it's unlikely to be generated - i.e. the doldrums of winter and early spring. Battery storage isn't cheap, and will likely need replacement at least once during the lifetime of the solar panels. This should therefore be included in any calculations. Being "off grid" is a different proposition to that of thinking you'll save money, or eco considerations.
People should be clear on their aims, and include all information relevant in any implementations, as to be frank there are a lot of cowboys looking to fleece you.
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