Impact and sustainability.

What IICTP measures, and why energy use belongs in engineering practice. No figure appears here unless it is real.

Why it matters

Computing uses real energy.

The International Energy Agency estimated that data centres used about 1.5% of the world’s electricity in 2024 (IEA, Energy and AI, 2025), and expects the share to grow. Efficient software is part of competent practice.

In the standard

Where it appears in the credentials.

The Clean Software Telemetry Practitioner credential (CSTP®) covers carbon-aware and energy-efficient engineering. Wider requirements are set in the TPBOK™ Guide.

What we report

Measures we publish.

Access

Fee support given: how many people received it, and on what criteria.

Registry reach

How many credentials are active, and in which regions.

Our own footprint

How we host and run the site, and how we reduce its energy use.

See the CSTP® credential Reports and disclosures