Key Learnings from Sustainability Season

Discover what separated smooth reporting cycles from stressful ones in 2025—and what teams can do now to be better prepared for 2026.

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20min read time  |  Published December 15, 2025

Sustainability reporting has entered a new era

Key Learnings from Sustainability Reporting Season breaks down what actually happened during the 2025 reporting cycle, based on real customer experiences and industry benchmarks. Discover where teams struggled, what top performers did differently, and how to strengthen data governance, automation, and audit readiness heading into 2026.

Unlock key insights inside the eBook:

Data quality drives reporting success

Delays stemmed from missing or inconsistent data—not GRESB, CDP, or ISSB complexity.

Year-round governance beats last-minute reporting

Teams monitoring data monthly moved faster and avoided rework.

Scope 3 is still the weakest link

Fragmented ownership and long lead times continue to slow reporting.

Automation works only with strong inputs

Clean, complete data is what unlocks real efficiency gains.

See Tango in action

Discover how Tango helps organizations like yours manage the full real estate lifecycle. By connecting data across leases, locations, workplace, and sustainability, we help you drive smarter decisions and measurable results.

Learn more about Tango Energy & Sustainability

Green plants with city skyscrapers background.

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Watch Tango and GRESB’s conversation on how to move beyond the scorecard and put your results into practice to accelerate decarbonization.

Be ready for the next reporting season

Learn what top-performing teams did differently in 2025—and how to apply those lessons now.