# Subscription and billing

> Manage the Voltmasters subscription for a project, view the invoice history, and order hardware in the Voltmasters shop as a partner.

Source: https://voltmasters.io/en/docs/voltmasters-platform/subscription/

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.

![Voltmasters EMS: subscription & billing](https://voltmasters.io/assets/docs/image-87.webp)

*Voltmasters EMS: subscription & billing*

### The Voltmasters shop

Partners order hardware and accessories in the **Voltmasters shop**, reachable from the **Shop** entry in the partner menu. You are signed in automatically, and orders and prices follow your partner.

### Frequently asked questions

**No active subscription**

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.

**How do I activate a subscription?**

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.

**How does billing work?**

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.

**What does price per kW mean?**

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.

**Where is the invoice sent?**

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.

**Can I view prices and invoice amounts?**

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.

**Why do I need to enter my bank account number?**

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.