How to size your solar solution based on energy needs
20 June 2025
Solar energy systems provide an uninterrupted source of energy for consumers, utilising the sunlight to produce electricity, that can then be used by the household or business to energise its needs and requirements. It is a seamless process, made even more seamless by whatever solar energy solution you go for, and which solar energy equipment supplier or company you go with. However, one of the primary reasons why a good and well-reputed solar energy equipment supplier and installer is recommended for people is because they are able to properly size a solar energy solution, based on the requirements of the consumer. And this is exactly what we’ll be discussing in this blog post; sizing your solar energy solution based on your energy needs.
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Lets get started on how to size your solar solution based on energy needs and requirements.
Sizing Your Solar Solution
Firstly, lets look at what this statement actually means. Sizing a solar energy solution doesn’t mean size in the actual sense; how much size is the solar energy system going to take up in the premises. That isn’t relevant to the equation of efficiency and energy generation. Instead, sizing a solar energy solution means ensuring that whatever the requirements of the household, the business or the factory are, these are easily covered and satisfied by the solar energy solution, with the possibility of scaling up later down the road, should the consumer need it. It means ensuring that the solar energy solution does not fall short of providing the required energy to the premises. And this entails excellent, thorough and comprehensive groundwork and calculation of what the energy requirements of the site are.
For example, it is usually considered that houses or residential settings require less energy than industrial or commercial settings, where energy intensiveness and efficiency is key to the overall profitability of the entire operation. This means that in theory, it is going to be much easier calculating the load or energy requirements of the residential site; ensuring that whatever the energy requirements of the household are, the solar energy solution produces more than that, helping homeowners and consumers store extra energy for a rainy day when the grid will inevitably present with problems.
The same goes for commercial settings and solutions. While their energy requirements are much more, obviously, they will still need to follow the same process of sizing the solar energy solution. Whatever the energy requirements are for the factory or business, the team will take into consideration some ups and downs in the overall energy requirements, and will always suggest and install a solar energy solution that produces more energy than required; then, a battery storage solution can be implemented to store that energy for a rainy day.
Energy Needs: Sizing a Solar Solution
The primary determinant of sizing a solar energy solution is always going to be the energy consumption of the site. For example, when sizing a solar energy solution for a residential setting, the team will be first calculating just how much energy is consumed on a daily basis, and then a historical overview is taken, to consider the spikes and downturns in energy consumption during weather changes; for instance, how much energy consumption spike is recorded during summers, and how less is consumed during winters. All of this is going to be taken into consideration, and once we have a final result, this is the number that the team will ensure that the solar energy solution gets regularly, even more.
Then comes the task of matching this energy requirements with the right solar panels, the right solar inverters and the right solar batteries (if required). This is the important bit; any person can size the solar energy solution, but getting the right equipment is key.
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