2025 Sustainability Report
Helping Shape a Cleaner Future for Asia Pacific
This report highlights how ESC contributes to responsible development across the region through its technical expertise, local knowledge and regional experience. It showcases our work in supporting energy transition, decarbonisation, climate risk management and environmental compliance.
Message from our Group CEO
Sound evidence, local understanding and technical expertise
The theme of this year’s report, Helping Shape a Cleaner Future for Asia Pacific, reflects the importance of sound evidence, local understanding and technical expertise in supporting responsible development.
“Progress requires collaboration across borders and practical solutions that address the region’s evolving environmental and social challenges.”
Andrew Young, Founder and Group CEO
ESC in 2025
Selected figures and developments that shaped our year.
Key Metrics
96
Employees across Asia
Our regional team brings together local knowledge and technical expertise to support project delivery
14.57 tCO2e
Scope 2 Emissions
Reported emissions from purchased electricity across ESC’s operations in 2025
0
Work-Related Incidents
ESC recorded no work-related incidents across its operations in 2025
Project Highlights
27+ GW
of Renewable Energy Projects
ESC supported over 27 GW of renewable energy projects across Asia during 2019–2025, including approximately 4.33 GW in 2025
8+
Data Centre Projects
Supported across Southeast Asia through environmental, technical and EHS services
19
Climate Projects
Helping organisations apply carbon, climate and sustainability information to business and project decisions
42
Infrastructure Projects
Supported across four regional markets, from planning and construction to operations and decommissioning
Our Organisation
2ISO-Certified Operations
ESC’s Singapore and Hong Kong operations maintained ISO 9001, ISO 14001 and ISO 45001 certification
47%Women
Women accounted for 47% of ESC’s workforce in 2025
9+External Engagements
ESC experts shared insights at industry and academic forums across Asia.
Renewable energy projects supported by ESC across Asia Pacific
27+ GW
of renewable energy capacity
CAPACITY BY ENERGY TYPE (GW)
Solar16.7
Hydropower4.0
Battery storage2.7
Wind2.4
Geothermal0.94
Subsea cables0.30
Waste-to-energy0.04
Project highlights
Selected work from across Asia Pacific
A selection of projects featured in our 2025 report. Explore how ESC supports clients across the project lifecycle, from environment and social through to operations and performance management.
Energy transition
Building Biodiversity and Community Safeguards into a 2.2 GWp Solar Project
Indonesia
Decarbonisation & climate risk
A Credible Evidence Base for Electric-Mobility Carbon Credits
Vietnam
Decarbonisation & climate risk
ASEAN Guide for Sustainable Data Centre Development
ASEAN Member States
Latest report
ESC Sustainability Report 2025
Helping Shape a Cleaner Future for Asia Pacific
Past reports
Work with our experts
Talk to our team about how ESC can support your projects across Asia Pacific.