The list covers Elche, San Vicente del Raspeig and La Nucia. Closest to Alicante city is Grupo Llorca. For work that needs return visits, a firm within an hour’s drive is usually worth a slightly higher quote.
None of these firms has 20 Google reviews yet, so lean on references from past customers. The average rating across the list is 4.3 (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.
For batteries, compare usable capacity rather than headline capacity, and check the warranty in cycles as well as years. For a generator, ask whether it can be started automatically by your inverter when the battery runs low.
Questions to ask before you sign
- What is the usable capacity and rated cycle life?
- Will the battery work with my existing inverter?
- Can the generator be started automatically?
- What fuel, and what does it cost to run per hour?