# List carbon intensity data

Returns a paginated list of carbon intensity data points for a specific carbon feed. Carbon intensity represents the amount of CO2 emissions per unit of electricity generated, measured in grams of CO2 per kilowatt-hour (gCO2/kWh).

Use started_at__gte and started_at__lte to filter by time range.

Endpoint: GET /carbon_feeds/{carbon_feed_id}/carbon_intensities
Version: 2.0
Security: oauth2

## Path parameters:

  - `carbon_feed_id` (string, required)
    Uniquely identify a specific carbon feed.
    Example: "cabf01HN2NJ9NMRZBXT1H6FT9N7735"

## Header parameters:

  - `EvEnergy-Version` (number)
    Specify the version of this endpoint to use.
    Enum: 2

## Query parameters:

  - `page_before` (string)
    Return results from the page after this ID.
    Example: "xmpl01HNFZM7Q8FXASZXYZ6XM3TQRR"

  - `page_after` (string)
    Return results from the page before this ID.
    Example: "xmpl01HNFZM7Q8FXASZXYZ6XM3TQRR"

  - `page_size` (integer)
    Specify the number of results to return per page.
    Example: 10

  - `expand` (array)
    Specify a url field to expand into a nested resource.
    Enum: "carbon_feed"

  - `started_at__gte` (string)
    Filter for entries on or after this datetime (ISO 8601).
    Example: "2024-01-15T10:00:00Z"

  - `started_at__lte` (string)
    Filter for entries on or before this datetime (ISO 8601).
    Example: "2024-01-15T12:00:00Z"

## Response 200 fields (application/json):

  - `url` (string)
    Example: "https://api.ev.energy/v2/carbon_feeds/cabf01HN2NJ9NMRZBXT1H6FT9N7735/carbon_intensities"

  - `carbon_feed` (string)
    Example: "https://api.ev.energy/v2/carbon_feeds/cabf01HN2NJ9NMRZBXT1H6FT9N7735"

  - `carbon_intensities` (array)
    A list of carbon intensity data points.

  - `carbon_intensities.started_at` (string, required)
    When this interval began.
    Example: "2024-01-15T10:00:00Z"

  - `carbon_intensities.interval_seconds` (integer, required)
    The number of seconds that this interval lasts for.
    Example: 1800

  - `carbon_intensities.co2_intensity_grams_per_kilowatt_hour` (integer, required)
    Carbon intensity in gCO2/kWh.
    Example: 245

  - `carbon_intensities.created_at` (string, required)
    When this record was created (ISO 8601 datetime).
    Example: "2024-01-15T09:45:00Z"

## Response 400 fields (application/problem+json):

  - `type` (string)
    Example: "https://api.ev.energy/v2/problems/example-problem/"

  - `status` (number)
    Example: 400

  - `title` (string, required)
    Example: "Short description"

  - `detail` (string, required)
    Example: "Long, more specific description."

  - `instance` (string)
    Example: "https://api.ev.energy/v2/users/user01HN2P75GBNFRJPCZJXEFVXH5E"

  - `notification` (object)
    Something that the user should be informed about.

  - `notification.id` (string, required)
    Unique identifier for the Notification
    Example: "notf67O36PLTFDB57M0E5L33JZLGM0"

  - `notification.url` (string, required)
    Example: "https://api.ev.energy/notifications/notf67O36PLTFDB57M0E5L33JZLGM0"

  - `notification.message_id` (string, required)
    Internal identifier for this notification type. E.g. 'ERR0023'

  - `notification.category` (any, required)
    Category of this notification type
    Enum: "ACTIONABLE", "SERVICE", "RETRY", "MARKETING", "INTERNAL"

  - `notification.event_time` (string, required)
    The timestamp of the event described by this notification

  - `notification.short_text_title` (string, required)
    Short title for the notification

  - `notification.short_text_body` (string, required)
    Short description of the event being notified

  - `notification.detail_page_title` (string)
    Title of a help page giving more information about this notification

  - `notification.detail_page_body` (string)
    Text of a help page giving more information about this notification

  - `notification.external_link` (string,null)
    URL of a web page giving further information about this notification

  - `notification.external_button_label` (string)
    Text to be displayed on a button leading to the external_link location

  - `notification.read_at` (string)
    When the user examined the contents of this notification

  - `notification.resolved_at` (string)
    When the problem associated with this notification was resolved

## Response 401 fields (application/problem+json):

  - `status` (number)
    Example: 401

  - `title` (string, required)
    Example: "Unauthorized"

  - `detail` (string, required)
    Example: "Authentication credentials were not provided."

## Response 403 fields (application/problem+json):

  - `status` (number)
    Example: 403

  - `title` (string, required)
    Example: "Forbidden"

  - `detail` (string, required)
    Example: "You do not have permission to perform this action."

## Response 404 fields (application/problem+json):

  - `status` (number)
    Example: 404

  - `title` (string, required)
    Example: "Not found"

  - `detail` (string, required)
    Example: "Resource does not exist or cannot be accessed."

## Response 406 fields (application/problem+json):

  - `status` (number)
    Example: 406

  - `title` (string, required)
    Example: "Not Acceptable"

  - `detail` (string, required)
    Example: "Could not satisfy the request Accept header."

## Response 429 fields (application/problem+json):

  - `type` (string)
    Example: "https://api.ev.energy/v2/problems/example-problem/"

  - `status` (number)
    Example: 400

  - `title` (string, required)
    Example: "Short description"

  - `detail` (string, required)
    Example: "Long, more specific description."

  - `instance` (string)
    Example: "https://api.ev.energy/v2/users/user01HN2P75GBNFRJPCZJXEFVXH5E"

  - `notification` (object)
    Something that the user should be informed about.

  - `notification.id` (string, required)
    Unique identifier for the Notification
    Example: "notf67O36PLTFDB57M0E5L33JZLGM0"

  - `notification.url` (string, required)
    Example: "https://api.ev.energy/notifications/notf67O36PLTFDB57M0E5L33JZLGM0"

  - `notification.message_id` (string, required)
    Internal identifier for this notification type. E.g. 'ERR0023'

  - `notification.category` (any, required)
    Category of this notification type
    Enum: "ACTIONABLE", "SERVICE", "RETRY", "MARKETING", "INTERNAL"

  - `notification.event_time` (string, required)
    The timestamp of the event described by this notification

  - `notification.short_text_title` (string, required)
    Short title for the notification

  - `notification.short_text_body` (string, required)
    Short description of the event being notified

  - `notification.detail_page_title` (string)
    Title of a help page giving more information about this notification

  - `notification.detail_page_body` (string)
    Text of a help page giving more information about this notification

  - `notification.external_link` (string,null)
    URL of a web page giving further information about this notification

  - `notification.external_button_label` (string)
    Text to be displayed on a button leading to the external_link location

  - `notification.read_at` (string)
    When the user examined the contents of this notification

  - `notification.resolved_at` (string)
    When the problem associated with this notification was resolved