# Computing Time on National Computing Facilities

**Funder:** NWO
**Deadline:** 31 December 2026 (14:00 CET)
**Duration:** Up to 2 years (1 year for LUMI; small requests up to 1 year)
**Application:** Single stage: application, referee reports and rebuttal, reviewed by WGS committee (meets 6 times a year)
**Frequency:** Continuous
**Eligible countries:** NL
**Official call:** https://www.nwo.nl/sites/nwo/files/media-files/Call-for-proposals-Rekentijd-2026-EN-def.pdf
**Last updated:** 7 Sept 2026

## Eligibility & scope

Provides computing time and data services on Dutch national computer facilities (Snellius, Data Processing Grid/Spider, HPC Cloud via SURF Research Cloud, and LUMI) for technical-scientific research. Open to researchers with tenured or tenure-track positions at eligible Dutch research organisations; applications must be written in English and submitted via the Isaac system.

## Summary

This NWO call provides computing time and data services on Dutch national computing infrastructure, Snellius, the Data Processing Grid/Spider, HPC Cloud via SURF Research Cloud, and the LUMI supercomputer, for technical-scientific research. It is open to researchers in tenured or tenure-track positions at eligible Dutch research organisations, with applications submitted in English through the Isaac system. The call runs continuously, and grants can last up to two years depending on the facility and request size.

## Who should apply

- Researchers in tenured or tenure-track positions at eligible Dutch research organisations
- Technical-scientific research projects needing large-scale computing or data processing resources
- Projects suited to Dutch national infrastructure (Snellius, Spider, SURF Research Cloud) or the European LUMI supercomputer
- Applicants able to submit in English via the Isaac system

## Key dates

- Deadline: 31 December 2026, 14:00 CET (call runs continuously)
- Single-stage application with referee reports and rebuttal, reviewed by the WGS committee (meets 6 times a year)
- Duration up to 2 years (1 year for LUMI; small requests up to 1 year)

## Tips for applicants

- Match your requested resource (Snellius, Spider, HPC Cloud, or LUMI) to your actual workload, LUMI awards are capped at one year regardless of project length.
- Prepare for a rebuttal round: referee reports precede committee review, so budget time to respond to technical critiques before the WGS committee meets.
- Since the WGS committee meets only six times a year, submit well ahead of the next meeting rather than the final deadline to avoid a longer wait for review.

## Frequently asked questions

### How much computing time can I request from NWO for national facilities?

The metadata does not specify a fixed budget cap; requests are assessed by scope and duration, with small requests eligible for up to one year and larger requests up to two years (one year for LUMI).

### Who is eligible to apply for NWO Computing Time on National Computing Facilities?

Researchers holding tenured or tenure-track positions at eligible Dutch research organisations can apply.

### What facilities does this NWO computing time grant cover?

It covers Snellius, the Data Processing Grid/Spider, HPC Cloud via SURF Research Cloud, and the European LUMI supercomputer.

### Is there a deadline for the NWO computing time call?

The call is continuous, but the current listed deadline is 31 December 2026 at 14:00 CET.

### How is my application to this NWO call evaluated?

Applications go through a single stage involving referee reports and a rebuttal, then are reviewed by the WGS committee, which meets six times a year.

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Source: [The Great Grantsby](https://grantsby.eu/grants/nwo-computing-time-on-national-computing-facilities-2026-12) — EU grant monitoring for academic researchers. Always verify details on the funder's website before applying.

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