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Installa is a CRM for solar installers. Underneath the job records and the quotes sits a lot of arithmetic: where the sun will be, how many panels a string can take, what a system should save its owner. These tools are built on that arithmetic and put it where anyone can use it; each one says where it differs from the product.
Every tool says what it assumes and how it works it out. None of them is a quote, a guarantee or a substitute for a proper design. They are a good place to start an argument with the numbers.
More of Installa’s checks are on their way out into the open. If one of these would save you an afternoon, tell us and it moves up the list.
Whether a PV and battery system needs a G98 notification or a G99 application, from its inverter ratings and the number of phases.
Where a home battery may and may not go under PAS 63100, room by room, and what each location needs.
DC and AC voltage drop for a run of copper cable, and the smallest size that keeps it under 3%.
Draw the roof, set the edge margins and the panel size, and see how many fit, portrait or landscape.
How much storage a home needs from the appliances it wants to keep running and for how long.
What rate of VAT applies to panels, batteries and the work to fit them, and until when.
Most of what goes wrong on a solar job was decided at the desk: a string one panel too long, a system sold on a yield the roof will never give, a payback worked out with last year’s tariff. Installa exists to catch those things before the scaffold goes up.
Putting the checks online costs us nothing and lets a homeowner ask better questions, an installer check a design on a phone, and a designer see how our numbers are made. If the maths is wrong, we would rather hear about it here than on a roof.
Put in one real enquiry, draw the roof, check the design and send yourself the quote. You will know within the hour whether Installa would have caught the things that went wrong last month.
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