As part of our commitment to social and environmental excellence, in 2025 we continued to strengthen our responsible procurement approach in partnership with
the Achilles platform, established in November 2023. This leading sustainable sourcing platform enables us to assess and support our suppliers against rigorous ESG criteria, aligned with ISO 14064 and SBTi standards.
In 2025, we updated our arrangements by adopting a new Achilles platform, better suited to our needs and our organisation. This transition was accompanied by a rationalisation of the number of audits carried out, consistent with more stable supplier activity and limited recourse to new partners during the year.
At the same time, we strengthened our quality audit policy, notably on material traceability issues, in order to improve transparency, compliance and the control of risks throughout our supply chain. Our actions also continue to be part of a process to prevent and address Principal Adverse Impacts (PAIs) with regard to the EU Taxonomy.
Thomas Roth, Head of Procurement & Supply Chain
“In the highly competitive solar energy sector, balancing responsible sourcing with competitiveness is critical , both for our ESG strategy and to meet shareholder expectations. We established a strict Supplier Code of Conduct but wanted to go further by selecting Achilles. Their platform ensures an independent ESG qualification process, delivering a robust and transparent assessment of supplier practices.”
This initiative continues to reinforce our commitment to a sustainable supply chain, in line with our CSR objectives.
The ACHILLES platform is used to perform ESG assessments for all suppliers and contractors, providing a ranking from A to E. At the qualification stage, a minimum ranking of “C” is required to validate ESG criteria. For key suppliers and EPC contractors not registered on ACHILLES, a specific ESG evaluation questionnaire is applied requiring a minimum score of 12 points to validate ESG criteria at the qualification stage.
In 2025
– 100% of the factories producing the panels installed during the year were audited
– 100% of the factories producing the inverters installed during the year were audited
– Our battery suppliers for the period 2025-26 have been audited as a preventive measure:
| Number of audits | 3 |
| Non-conformities requiering minor improvement | 2 |
| Non-conformities qualified as “certified”, not requiring action | 1 |
| Opportunities for improvement | 12 |
| Positive points | 1 |
100% of our suppliers have a rating > C
Achilles uses a letter-rating system (A, B, C, D) within their overall scorecard to signal a supplier’s performance relative to benchmarks:
A – Excellent: Suppliers scoring 81+ are in the top 15% of Achilles’ network—demonstrating outstanding performance.
B – Good: Scores between 61–80 are above average and indicate generally strong performance with room for refinement.
C – Requires Improvement: Scores from 46–60 suggest noticeable gaps; buyers are encouraged to seek further evidence or engage the supplier proactively.
D – Poor/High Risk: Scores ≤ 45 are considered low-performing and high-risk, prompting heightened due diligence or intervention.