Firms are spread across Valencia, Alfafar, Tavernes Blanques and Guadassuar, among other towns. Within 20 km of Valencia are Eurener Group, VL Placas Solares Valencia and Turbo Energy. Distance matters less for a one-off job than for servicing, so check how often they’ll come out to a rural plot.
Solvi Sistemas, Evolucion Solar Valencia and Sol Instalaciones lead on Google among firms with at least 20 reviews. The average rating across the list is 4.5 (firms with at least five reviews). A handful of five-star reviews is a start, but ask for a job you can go and see.
Off-grid work is different from grid-tied rooftop solar. Ask how many stand-alone systems the firm has fitted, which inverter brands it services itself, and what happens if the battery fails in August.
Questions to ask before you sign
- How many off-grid (stand-alone) systems have you fitted?
- Can you size the system from my appliance list?
- What battery chemistry, usable capacity and warranty are you quoting?
- Which inverter brand, and do you service it yourselves?
- What does the price include: fitting, cabling, certificates?