Getting a second opinion before you sign a solar quote in Portugal
A single installer quote is one perspective on your project. A second, flat fee analysis of your own bill and roof gives you something to check it against before you sign.
A single installer quote reflects that installer's standard approach: their default system size, their preferred equipment, their view on whether you need a battery. A second, flat fee analysis based on your own bill and roof gives you something to check that quote against before you sign, using local PVGIS data for the Minho rather than a national average.
Side by side
| What you are comparing | Going direct to an installer | Getting a second opinion first |
|---|---|---|
| What you get | One quote, sized and priced by that installer | A written analysis of your property, based on your own bill and roof |
| System sizing | Based on that installer's standard approach | Based on your actual usage pattern and roof, using local PVGIS data for the Minho |
| Battery recommendation | Often bundled regardless of whether it suits your home | Honest yes/no based on your usage pattern and budget |
| Installer choice | One quote, their own | Two or three vetted installers matched to your project; you choose |
| DGEG guidance | Often leaves registration to you | Explains the process in plain English; confirms who handles each step |
| Language | Usually Portuguese only | English throughout |
| Quote review | Will not review a competitor's quote | Reviews any quote before you sign |
When a second opinion matters most
- You are buying a system above €5,000: the fee is a small percentage of the total cost
- You are unsure whether a battery is worth adding
- You have received multiple quotes with very different system sizes or prices
- You are not fluent in Portuguese and cannot read the contract or DGEG documents yourself
- Your property has a complex roof, shading, or mixed orientations that require careful modelling
Is the fee worth it?
A typical solar installation in Northern Portugal costs €6,000 to €14,000. A Blueprint analysis from Minho Solar costs €45. If it identifies a system that is even 10% smaller than what an installer would have proposed, or confirms that a €3,500 battery is not necessary for your usage pattern, it pays for itself many times over. We are homeowners in Ponte de Lima. We went through this process ourselves and built the service we wished had existed.
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