Guides
Why comparing several installer offers changes everything
18 June 2026 · SOLARSPLIT
Most homeowners sign with the first installer who responds. It is understandable: getting a single quote already takes calls, a visit, follow-ups. Getting three, then comparing them seriously, feels like a second job. Yet that is where most of the project is decided.
Two quotes for the same roof do not tell the same story
For an identical roof, two offers can differ on almost everything: the proposed power, the number of panels and their layout, the brand and generation of the inverter, the product and performance warranties, whether scaffolding is included or not, the completion timeline, the payment terms.
Comparing only the total at the bottom of the page is like comparing two grocery baskets by their receipts without looking at what is inside. The cheapest offer can be the best one. It can also hide an undersized inverter or a shorter warranty, and the difference only shows line by line.
What competition changes in practice
When an installer knows their offer will be compared, they price with care. Vague lines disappear, warranties are written down, timelines are stated. Competition does not just push a price down: it raises the quality of every offer on the table.
That is the principle of the SOLARSPLIT journey: your project, specified by a technical visit, goes out to several installers in the network, and you receive up to three offers compared and scored, not just listed.

The neutral opinion, the piece that is usually missing
A quote is written by the person who wants to sell it. That is normal, but it means each document highlights its strengths and keeps quiet about its weaknesses. To decide between them, you need a pair of eyes with nothing to sell in the transaction.
SOLARSPLIT is not an installer. The advisor who accompanies you scores the offers on identical criteria and explains the differences. You remain the sole decision-maker, but you decide on an honest comparison rather than on three documents that cannot be compared.
How much time does comparing cost?
With the structured journey, competition adds almost nothing: the call for tenders and the comparison take about two weeks after the technical visit, and the same advisor remains reachable throughout this phase. Two weeks for equipment your roof will carry for twenty-five years, the math is quickly done.
Where to start
Before comparing offers, you need a project to price. The online simulation, free of charge, establishes your roof’s potential from the building’s public data. It is the starting point for everything else.
And your roof, what is it worth?
The simulation is free and online, based on your building's public data.
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