Case Study: Siemon achieves 90%+ carbon-accounting accuracy and slashes reporting time with Greenly

How Siemon Enhanced Emission Accuracy and with Greenly

Siemon, a global leader in network infrastructure solutions, faced significant challenges in carbon accounting—its initial baselines from a previous provider were three times too high, data was siloed across spreadsheets, and emissions lacked the granularity needed for targeted reductions. To address this and align with SBTi/net‑zero goals, Siemon turned to Greenly and its platform (including the building module) to centralize data and improve reporting accuracy.

Greenly rebaselined Siemon’s 2021–2022 emissions to SBTi standards, implemented detailed category breakdowns (e.g., freight by transport method), and enabled Scope 2 and Scope 3 tracking covering 90% of emissions. The Greenly implementation lifted carbon accounting accuracy from ~50% to over 90%, cut annual accounting time from 1,080 to 40 hours, reduced consultancy fees by 60%, increased employee engagement to 30%, and helped raise renewable energy use from 30% to 50%, delivering clear measurable impact.

Siemon

Jonathan Ciccio

Continuous Improvement Manager