> For the complete documentation index, see [llms.txt](https://docs.voltmasters.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.voltmasters.io/voltmasters-platform/11.-subscription.md).

# Subscription & Billing

Under **Subscription**, accessible via the project menu for accounts with the appropriate permissions, you can manage the Voltmasters subscription for this project and view your invoice history.

<figure><img src="/files/BOK3fIFvazQMI1jBirpX" alt="Voltmasters EMS: subscription &#x26; billing"><figcaption><p>Voltmasters EMS: subscription &#x26; billing</p></figcaption></figure>

### Frequently asked questions

<details>

<summary><strong>No active subscription</strong></summary>

If your project shows a message indicating that there is no active subscription, no Voltmasters subscription has yet been linked to your environment. Follow the steps below to activate one.

If you believe a subscription should already be active, contact Voltmasters Support. It is possible that a subscription exists on the back end but has not yet been linked to your project.

</details>

<details>

<summary><strong>How do I activate a subscription?</strong></summary>

If your account has permission to activate a subscription:

1. Navigate to **Subscription** or **Pricing / Activate** within the project.
2. Follow the on-screen steps to select and activate a plan.

If the option is not visible or you receive an error, your account may not have the required permissions. Contact Voltmasters Support for assistance.

</details>

<details>

<summary><strong>How does billing work?</strong></summary>

Invoices are generated and stored under **Billing history** within the Subscription section. Payment is processed according to the terms agreed in your contract with Voltmasters, either by bank transfer or by direct debit.

</details>

<details>

<summary><strong>What does price per kW mean?</strong></summary>

Some subscription products are priced per installed kilowatt of a specific component (for example, per kW of battery capacity). The on-screen wizard explains what to enter for the chosen product.

</details>

<details>

<summary><strong>Where is the invoice sent?</strong></summary>

Invoices are sent to the email address and postal address stored under **Billing details** in the subscription settings. Make sure these details are up to date to ensure you receive your invoices correctly.

</details>

<details>

<summary><strong>Can I view prices and invoice amounts?</strong></summary>

With access to the subscription and billing screen, you can view your invoices and the amounts stated on them. What is visible depends on the permissions assigned to your account.

</details>

<details>

<summary><strong>Why do I need to enter my bank account number?</strong></summary>

Your bank account number is required for payment by direct debit or, where applicable, for outgoing transfers, in accordance with the payment terms agreed in your contract with Voltmasters.

</details>


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