From their website

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In the Bloomberg New Energy Finance (BNEF) Tier1 standard PV module manufacturers list, LONGi has ranked Tier1 for 5 years.

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Bloomberg 3-tier rating system for PV module makers is based on bankability to differentiate the hundreds of solar module manufacturers.

 

Simply put, the European Investment Bank (EIB) considers a project bankable if 3rd party lenders are willing to finance it. BNEF ranks Tier 1 manufacturers as those that have provided own-brand, own-manufacture products to six different projects, which have been financed by six different (non-development) banks in the past 2 years.

Manufacturers in China, India and Turkey are subject to a more stringent criterion that the project deal must be non-recourse, which means the bank undertakes the risk in the event of PV modules failing.

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LONGi graded as only AAA-Rated module supplier

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The new Q1 2020 bankability analysis has now been completed by the PV-Tech market research team, ranking PV module suppliers within the PV ModuleTech Bankability Ratings. The listing reveals that LONGi Solar now commands AAA-Rated status, the highest grade achievable.

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