FastFiber is pleased to announce that it received a 5 star rating and placed 1st among its immediate participating peer group of fiber network operators in Europe in the 2023 GRESB Infrastructure Assessment.

Each year, GRESB (the Global Real Estate Sustainability Benchmark) assesses and benchmarks the environmental, social and governance performance of real estate and infrastructure investments worldwide, providing clarity and insights to financial markets on complex sustainability topics.

The GRESB Assessments are guided by what investors and the industry consider to be material issues in the sustainability performance of asset investments and are aligned with international reporting frameworks, goals and emerging regulations.

The GRESB Benchmark grew this year to cover more than USD 8.8 trillion of gross asset value, encompassing 2,084 real estate entities, 687 infrastructure assets and 172 infrastructure funds.


GRESB is a mission-driven and industry-led organization providing standardized and validated Environmental, Social, and Governance (ESG) data to financial markets. Established in 2009, GRESB has become the leading ESG benchmark for real estate and infrastructure investments across the world, used by 150 institutional and financial investors to inform decision-making. For more information, visit