# List tariffs, sorted alphabetically by name.

List all the energy supplier tariffs known by the ev.energy system.
Use the `available_for_user_id` query parameter to narrow the list to only those relevant to a specific user and `supplier` query parameter to list only tariffs for a specific supplier.
**Visibility.** Public tariffs are visible to every application. Custom tariffs created with `POST /tariffs` are private to the organisation that created them. This list includes your organisation's own custom tariffs, and never includes another organisation's. A tariff owned by a user, including one created in the ev.energy app, is visible only to that user, to users it is assigned to, and to organisations whose users created it or have it as their import or export tariff. When `available_for_user_id` is used, custom tariffs only appear if they are assigned to that user.

Endpoint: GET /tariffs
Version: 2.0
Security: oauth2

## Security:

  - `oauth2` (unknown)
    oauth2 scopes: tariff:read

## Query parameters:

  - `page` (number)
    The page number to return results for.

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

  - `expand` (array)
    Specify a url field to expand into a nested resource. Price amounts in the prices expansion are `null` for licensed tariffs without the tariff:prices:read scope.

  - `supplier_id` (string)
    The ID of the supplier to filter by.

  - `valid` (boolean)
    Filter by whether the tariff is currently open to new sign-ups (valid_from on or before today, and valid_until on or after today or unset). `true` returns only currently-available tariffs; `false` returns only superseded or not-yet-available ones. Omit to return all tariffs.

  - `gsp_group` (string)
    Filter by GB Grid Supply Point (DNO region) code, e.g. `_C` for London.

  - `available_for_user_id` (string)
    Filter to only return resources available in the user's region and program.
Must be `me` or a user the caller can read with `GET /users/{id}`. Any other
user, including one that does not exist, returns a `400` with the
`object-id` problem type.

  - `include_optional` (string)
    Include optional tariffs.

## Header parameters:

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

  - `EvEnergy-User` (string)
    If the client is authenticated using Client Credentials, setting EvEnergy-User to a valid user ID allows requests to be made as if you were directly authenticated as that user.

## Response 200:

  - `200` (unknown)
    Return a list of Tariffs.

## Response 200 fields (application/json):

  - `id` (string, required)
    Unique identifier for the given user.
    Example: tari01HN2NJ9NMRZBXT1H6FT9N7735

  - `url` (string, required)
    Example: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7735

  - `supplier` (any, required)
    The energy company that supplies this tariff.

  - `supplier.id` (string, required)
    Unique identifier for the given user.
    Example: supl01HN2NJ9NMRZBXT1H6FT9N7735

  - `supplier.url` (string, required)
    Example: https://api.ev.energy/v2/suppliers/supl01HN2NJ9NMRZBXT1H6FT9N7735

  - `supplier.name` (string, required)
    Example: Rivendell Renewables

  - `supplier.icon` (string | null, required)
    Example: https://cdn.example.com/rivendell_renewables.jpg

  - `supplier.highlighted` (boolean)
    A highlighted supplier is one that is often selected by users.

  - `name` (string, required)
    Example: Fangorn Biomass

  - `currency` (string, required)
    Example: GBP

  - `highlighted` (boolean)
    A highlighted tariff is one that is often selected by users.

  - `type` (string)
    Enum: "FLAT_RATE", "DUAL_RATE", "THREE_RATE", "DYNAMIC", "EXTERNALLY_MANAGED", "OTHER"

  - `daily_prices` (object)
    Information about the tariff's prices for different parts of the day.

  - `daily_prices.peak` (object, required)
    A single price for a certain time range.

  - `daily_prices.peak.price` (string | null)
    The price is in major currency units e.g. 0.10 means £0.10. `null` for licensed tariffs without the tariff:prices:read scope.
    Example: 0.10

  - `daily_prices.peak.times` (array)

  - `daily_prices.peak.times.start` (string)
    Example: 18:00:00

  - `daily_prices.peak.times.end` (string)
    Example: 00:00:00

  - `timezone_name` (string)
    Example: Europe/London

  - `price_chart_url` (string | null)
    The url of a website which can display a chart of prices for the tariff. This website is an external resource and is not affiliated with ev.energy.
    Example: https://www.example.com/

  - `prices_include_vat` (boolean | null)
    Whether the prices of this tariff include VAT. `null` if this is not known for the tariff.
    Example: true

  - `gsp_group` (string | null)
    The GB Grid Supply Point (DNO region) the tariff applies to. Suppliers publish region-specific rates, so the same named tariff can appear once per region with differing prices; this field distinguishes them. `null` for tariffs that are not region-specific.
    Example: _C

  - `valid_from` (string)
    The date from which this tariff became available to new customers.
    Example: 2026-03-17

  - `valid_until` (string | null)
    The date after which this tariff is no longer available to new customers (it has been superseded). `null` if the tariff is still open to new sign-ups. Use the `valid` query parameter to filter the list to only currently-available tariffs.
    Example: 2027-03-17

  - `payment_method` (string | null)
    The payment method the tariff's prices apply to. Some suppliers charge different rates depending on how the customer pays, so the same named tariff can appear once per payment method; this field distinguishes them. `null` when the supplier does not price by payment method.
    Enum: "DIRECT_DEBIT", "NON_DIRECT_DEBIT", "null"

  - `scheduler_tariff` (any)
    The tariff used by the scheduler for charge optimisation, which may differ from the billing tariff. Returns a URL by default, or null if not set. Expandable with ?expand=scheduler_tariff to return a TariffBase object (additional fields may be present beyond those listed here).

  - `scheduler_tariff.id` (string, required)

  - `scheduler_tariff.url` (string, required)

  - `scheduler_tariff.supplier` (string, required)

  - `scheduler_tariff.name` (string, required)

  - `scheduler_tariff.currency` (string, required)

## Response 200 headers (application/json):

  - `Link` (string)
    Provides links to the previous and next pages of data, if they exist.
    Example: <about:blank>; rel="previous", <https://api.ev.energy/v2/examples/?page=2&page_size=25>; rel="next"

  - `EvEnergy-Version` (number)
    Indicates the version of the API that generated this response. If EvEnergy-Version was not specified in the request, this will be your OAuth application's default version.
    Enum: "2"

  - `X-RateLimit-Limit` (number)
    The maximum number of requests that can be made to this endpoint per hour. Defaults to 1000 but may vary per client.

  - `X-RateLimit-Remaining` (number)
    The number of requests remaining until this client's rate limit is reached.

  - `RetryAfter` (number)
    The number of seconds until this client's requests will not be rate limited.

## Response 400:

  - `400` (unknown)
    A problem with the request's parameters prevented it being fulfilled.

## 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` (string, 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, required)
    Title of a help page giving more information about this notification

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

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

  - `notification.external_button_label` (string, required)
    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 400 headers (application/problem+json):

  - `EvEnergy-Version` (number)
    Indicates the version of the API that generated this response. If EvEnergy-Version was not specified in the request, this will be your OAuth application's default version.
    Enum: "2"

  - `X-RateLimit-Limit` (number)
    The maximum number of requests that can be made to this endpoint per hour. Defaults to 1000 but may vary per client.

  - `X-RateLimit-Remaining` (number)
    The number of requests remaining until this client's rate limit is reached.

  - `RetryAfter` (number)
    The number of seconds until this client's requests will not be rate limited.

## Response 401:

  - `401` (unknown)
    You need to authorise requests to access this resource.

## 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 401 headers (application/problem+json):

  - `EvEnergy-Version` (number)
    Indicates the version of the API that generated this response. If EvEnergy-Version was not specified in the request, this will be your OAuth application's default version.
    Enum: "2"

  - `X-RateLimit-Limit` (number)
    The maximum number of requests that can be made to this endpoint per hour. Defaults to 1000 but may vary per client.

  - `X-RateLimit-Remaining` (number)
    The number of requests remaining until this client's rate limit is reached.

  - `RetryAfter` (number)
    The number of seconds until this client's requests will not be rate limited.

## Response 403:

  - `403` (unknown)
    You do not have permission to perform this action.

## 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 403 headers (application/problem+json):

  - `EvEnergy-Version` (number)
    Indicates the version of the API that generated this response. If EvEnergy-Version was not specified in the request, this will be your OAuth application's default version.
    Enum: "2"

  - `X-RateLimit-Limit` (number)
    The maximum number of requests that can be made to this endpoint per hour. Defaults to 1000 but may vary per client.

  - `X-RateLimit-Remaining` (number)
    The number of requests remaining until this client's rate limit is reached.

  - `RetryAfter` (number)
    The number of seconds until this client's requests will not be rate limited.

## Response 404:

  - `404` (unknown)
    This resource either does not exist or the client is not authorized to access it.

## 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 404 headers (application/problem+json):

  - `EvEnergy-Version` (number)
    Indicates the version of the API that generated this response. If EvEnergy-Version was not specified in the request, this will be your OAuth application's default version.
    Enum: "2"

  - `X-RateLimit-Limit` (number)
    The maximum number of requests that can be made to this endpoint per hour. Defaults to 1000 but may vary per client.

  - `X-RateLimit-Remaining` (number)
    The number of requests remaining until this client's rate limit is reached.

  - `RetryAfter` (number)
    The number of seconds until this client's requests will not be rate limited.

## Response 406:

  - `406` (unknown)
    Could not satisfy the request Accept header.

## 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 406 headers (application/problem+json):

  - `EvEnergy-Version` (number)
    Indicates the version of the API that generated this response. If EvEnergy-Version was not specified in the request, this will be your OAuth application's default version.
    Enum: "2"

  - `X-RateLimit-Limit` (number)
    The maximum number of requests that can be made to this endpoint per hour. Defaults to 1000 but may vary per client.

  - `X-RateLimit-Remaining` (number)
    The number of requests remaining until this client's rate limit is reached.

  - `RetryAfter` (number)
    The number of seconds until this client's requests will not be rate limited.

## Response 429:

  - `429` (unknown)
    The client has exceeded its rate limit.

## 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` (string, 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, required)
    Title of a help page giving more information about this notification

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

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

  - `notification.external_button_label` (string, required)
    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 429 headers (application/problem+json):

  - `EvEnergy-Version` (number)
    Indicates the version of the API that generated this response. If EvEnergy-Version was not specified in the request, this will be your OAuth application's default version.
    Enum: "2"

  - `Retry-After` (number)
    The number of seconds until this client's requests will not be rate limited.

  - `X-RateLimit-Limit` (number)
    The maximum number of requests that can be made to this endpoint per hour. Defaults to 1000 but may vary per client.

  - `X-RateLimit-Remaining` (number)
    The number of requests remaining until this client's rate limit is reached.

## Response 400 examples:

  - `Invalid Pagination Parameter` (unknown)

  - `Unsupported Version` (unknown)

## Response 429 examples:

  - `Example 1` (unknown)