# Centrica

> Supported steering: batteries, FCR

Source: https://voltmasters.io/en/docs/external-signal/centrica/

![Centrica Energy logo](https://voltmasters.io/assets/docs/brand-centrica.svg)

[Centrica](https://www.centricaenergy.com) is an external energy partner that operates the connected assets by sending steering signals to the EMS.

**Supported steering:** batteries, FCR.

> **Note**
>
> The Centrica integration is being finalized.

### Connection

Centrica uses **certificate-based authentication**. There is no central platform endpoint; the certificate set is provisioned directly on the project's controller.

### What we need to connect

The following files must be provided by Centrica and uploaded in the project's energy trading settings:

| File | Description |
| --- | --- |
| **Root CA** (`client.ca.cert`) | Certificate authority certificate |
| **Client certificate** (`client.crt`) | Client certificate |
| **Client key** (`client.key`) | Client key |
| **Private key PKCS#8** (`client.pkcs8.key`) | Private key in PKCS#8 format |