The way that your wallet is charged for the usage of SURF Research Cloud resources depends on the type of contract that backs your wallet.

Contracts and budgets are generally issued for a specific cloud provider (SURF HPC Cloud, Azure, AWS ...). In order to see how your usage will affect your budget, look for the section on the cloud provider you use.

We now explain the financing sources that you can use within our own private cloud provider, known as SURF HPC Cloud.


NWO grants

See for full details our main webpage:

Small NWO grants

Compute resources

With Small NWO grants (former "E-Infra"), we do not calculate in Dollars or Euros but in "CPU hours", "GPU hours" and "TB per month". 

Each Small NWO grant can provide your project with a maximum (and default) of

    • 50.000 CPU hours
    • 5.000 GPU hours (if the nature of the project actually requires them)


For Small NWO, the amount of granted storage is max 2 Terabytes for one year.

Big NWO grants

It is a grant that allows you to request at NWO exactly the amounts that you need in terms of compute and storage. It is meant for larger and long-lasting research when a Small NWO falls short.

A Big NWO is appliced for directly with NWO:


RCCS and project-based contracts

RCCS contracts provide compute capacity to SURF member-institutions for special tariffs.

If your institution does not have an RCCS contract, you can make an agreement with SURF about what you need, and we will then create a contract for your project.

Please contact your own institute or SURF customer support ( ) about the details.

For information on the conditions please refer to

This page also has a link to a pdf-document that lists the prices.

In that document, search for "HPC Cloud".

Paused workspaces

Core hours

When a workspace is in the state "paused", no core- ore GPU hours are charged for it.


Storage will only be charged for if your budget is based on a RCCS contract.

Small NWO grants allow for a fixed amount of storage. So with a grant-based budget it does not matter whether the workspace is paused or not. With grants, the billing of the storage is not time-based.