# Billing 

## Terminology

* Billing Unit (BU): A unit used for billing at CSC - each resource consumes a given amount of BUs per hour.

* Cloud Billing Unit: Billing Units assigned to usage of cloud services. Satama usage
  consumes Cloud BUs.

* CSC Project: A placeholder for the user's resources information - including: the number of Cloud BUs and the CSC services which are available for use.

* Satama Project: A Satama project is one which is created at https://satama.csc.fi after the Satama service is activated at a CSC project.

## Billing Model

Currently, Satama will bill for storage only. Billing is based on the amount of data stored.
The account of resource usage is provided in one-hour increments. The rate is 1 Cloud BU/GiBh,
i.e. 1 GiB of data stored at Satama will consume 1 Cloud BU per hour and 24 Cloud BU in a day.

If 10 GiB of storage is consumed, BU consumption can be calculated using the following formula

```
10 * 1 = 10 Cloud BUs per hour
```
A good way to estimate usage cost is the [Billing Unit calculator](https://research.csc.fi/resources/#buc) utility. For more information about Billing in CSC, visit the [Billing](../../accounts/billing.md) page.

## Quota

The default quota for a new project is **50 GB**, but this can be increased if needed. If you need more resources than the defaults, you can apply for more quota by contacting the Service Desk. See the [Contact page](../../support/contact.md) for instructions. Quota requests are handled on a case-by-case basis depending on the currently available resources in Satama and the use case.