Supply chain traceability is becoming a mandatory requirement for European solar procurement, driven by regulations such as the Corporate Sustainability Reporting Directive (CSRD) and the Net-Zero Industry Act (NZIA). LONGi achieved 100% audit coverage of its tier-1 suppliers in 2024, implemented ISO 20400 for sustainable procurement, and ensured full reporting for conflict minerals (3TG) using CMRT and RMAP. The company has also engaged 228 suppliers in ESG training, completing over 1,200 sessions. Verified ESG data is now critical for project bankability and investor due diligence, especially in financing environments where sustainability disclosures influence access to capital.
Traceability as a Procurement Requirement in Europe
According to pv magazine International, supply chain traceability is becoming a mandatory requirement for participation in large-scale solar projects across Europe. Regulatory frameworks such as the Corporate Sustainability Reporting Directive (CSRD) and the Net-Zero Industry Act (NZIA) are shifting evaluation criteria in public tenders toward non-price factors, particularly environmental, social, and governance (ESG) performance. As a result, verified ESG compliance and material origin transparency are now central to supplier selection and project bankability.
LONGi’s Full Audit Coverage and ESG Integration
LONGi achieved 100% audit coverage of its primary supplier base during the 2024 reporting period, ensuring systematic vetting for environmental and social compliance across all tier-1 partners. This documented baseline supports downstream partners in their own regulatory reporting and tender submissions. The company has embedded ESG criteria directly into its procurement systems through the adoption of ISO 20400 for sustainable procurement, enabling compliance checks to be applied at the point of purchase rather than retroactively.
Compliance in High-Risk Material Sourcing
For conflict minerals—tin, tantalum, tungsten, and gold (3TG)—LONGi implemented full reporting coverage using the Conflict Minerals Reporting Template (CMRT) and the Responsible Mineral Assurance Process (RMAP). These frameworks ensure traceability and compliance within high-risk categories, which is increasingly important for institutional investors assessing project bankability and long-term asset value.
Capacity Building Through Digital Training
LONGi has launched digital training platforms to align its supplier network with international ESG standards. As of 2026, 228 suppliers are actively engaged in ESG training programs, with over 1,200 participation sessions completed across technical modules covering environmental management and labor practices. This initiative supports consistent compliance and reduces regulatory exposure across the supply chain.
Impact on Project Financing and Due Diligence
For European developers and investors, verified ESG data streamlines due diligence and reduces uncertainty in project evaluation. In a financing environment where sustainability disclosures are increasingly tied to capital access, the ability to provide third-party-backed ESG data is becoming a key differentiator. According to the report, this capability directly influences which projects proceed and under what conditions.
“The ability to demonstrate a transparent and audited supply chain is therefore becoming a prerequisite for participation in large-scale projects in Europe.” — pv magazine International
- 100% audit coverage of tier-1 suppliers at LONGi (2024 reporting period)
- Over 1,200 ESG training sessions completed across the supplier network
- 228 suppliers engaged in ESG training programs
- Full reporting coverage for 3TG materials using CMRT and RMAP
- Adoption of ISO 20400 for sustainable procurement across operations
Source: www.pv-magazine.com
Compiled from international media by the SCI.AI editorial team.
