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Event triggered when the supply start date is reached and energy delivery to the customer has begun. Up to this point the subscription was confirmed but not yet supplying. This is the moment to flip the customer to active in your own systems.

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Response body parameters

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id
string
required
Unique event identifier (starts with evt_).
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timestamp
string
required
ISO 8601 timestamp when the event was created.
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topic
literal
required
Always subscription.activated for this event.
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context
object
required
Event-specific data containing related resource IDs.
{
  "id": "evt_abc123def456ghi789jkl012",
  "timestamp": "2026-01-15T10:30:00.000Z",
  "topic": "subscription.activated",
  "context": {
    "subscription": "sub_abc123def456ghi789jkl012"
  }
}