The official language of NEN 1010 is Dutch. However, the Netherlands hosts a massive number of international companies, expatriate engineers, and foreign contractors working on data centers, industrial plants, renewable energy projects, and residential developments.
Some Dutch trade organizations (e.g., UNETO-VNI for installers) provide abbreviated checklists in English. These are useful for routine work but not for design certification. nen 1010 english pdf
Minor amendments (C1, C2, etc.) appear every 1–2 years. A full new edition (from 2015 to 2020) takes about 5 years. The next full revision is expected around 2025–2026. The official language of NEN 1010 is Dutch