Registered solar installers in Luxembourg: how to verify
By KlimaGrid Editorial · May 6, 2026 · 4 min read
In Luxembourg, the French "RGE" label (Reconnu Garant de l'Environnement) doesn't apply directly — it's a French scheme. The Luxembourg equivalent is registration with the Ministry of the Economy, mandatory for the Klimabonus. Here is how to verify a genuinely registered installer in 2026.
The official registry: the only source of truth
The Ministry of the Economy maintains a public registry of Klimabonus-registered companies, updated monthly. Any listed company can pre-finance the Klimabonus; any unlisted company cannot, regardless of marketing claims. An installer claiming registration but missing from the registry is a major red flag.
Registration criteria
To obtain registration, a company must prove: relevant technical qualifications (ongoing training in renewables), 10-year liability insurance covering installed equipment, demonstrated experience (verifiable references), and a formal commitment to Klimabonus technical requirements. Registration must be renewed annually.
Questions to ask before signing
Three questions quickly check seriousness: (1) "Can you confirm your Klimabonus registration number?" — a registered installer answers immediately. (2) "Does the quote show the Klimabonus pre-deducted or do I have to advance it?" — in 2026, pre-financing is mandatory. (3) "What panel brands and inverter are proposed?" — the answer must be precise, not "Tier 1 panels" without detail.
How KlimaGrid filters for you
Every installer in our network is on the official registry — that is our first, non-negotiable filter. We also check recent customer reviews, geographic coverage, and price consistency. You receive 3 comparable quotes within 48 h, with no phone harassment.