specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: Nord Pool
providerId: nordpool
created: '2026-07-11'
modified: '2026-07-11'
reconciled: false
tags:
- Day-Ahead Prices
- Electricity
- Energy Markets
- Power Exchange
- Rate Limiting
- Quotas
description: >-
  Nord Pool does not publish fixed numeric rate limits for the Market Data API
  in its public OpenAPI definition or marketing pages. Access is gated
  commercially rather than by request-rate tiers - each Power Data Services
  subscription includes one OAuth 2.0 API account (additional accounts EUR 350
  per year), and the scope of data returned is bounded by the packages
  purchased (for example, the day-ahead-price-only package limits history to
  the last 8 days). The Intraday Trading API is governed by STOMP heartbeat
  requirements and per-member onboarding rather than published request caps.
  The unofficial public Data Portal API has no published limits but is served
  behind CDN protection that blocks non-browser clients without proper
  headers, and should be polled gently.
notes: >-
  Numeric per-account or per-endpoint limits are not documented publicly as of
  the review date; developer-portal FAQ pages (developers.nordpoolgroup.com)
  sit behind bot protection and may state operational limits to registered
  users. Confirm any throughput expectations with Nord Pool during
  onboarding.
sources:
- https://data-api.nordpoolgroup.com/index.html
- https://www.nordpoolgroup.com/en/services/power-market-data-services/
- https://www.nordpoolgroup.com/en/trading/api/
responseCodes:
  throttled: 429
limits:
- name: Market Data API Requests
  scope: account
  metric: requests
  limit: not published
  notes: No numeric request-rate limit appears in the published OpenAPI definition.
- name: API Accounts per Subscription
  scope: subscription
  metric: accounts
  limit: 1 included
  notes: One OAuth API account included per customer across all subscriptions; additional accounts cost EUR 350 per year.
- name: Data Scope
  scope: subscription
  metric: history
  limit: per package
  notes: Data coverage and history depth (for example 8 days on price-only packages, back to 1992 on full packages) are set by the purchased package, not by request quotas.
- name: Intraday Trading API Sessions
  scope: member
  metric: connections
  limit: per onboarding
  notes: WebSocket/STOMP sessions require member credentials from idapi@nordpoolgroup.com; heartbeats must be maintained and access tokens refreshed on live connections.
- name: Public Data Portal API
  scope: anonymous
  metric: requests
  limit: not published
  notes: Unofficial endpoint with no stated quota; aggressive polling risks being blocked. Prices publish once daily around 13:00 CET, so more than a few requests per day is rarely useful.
policies:
- name: Commercial Gating
  description: Access control is primarily commercial (annual data fees and trading membership) rather than technical request-rate tiers.
- name: Backoff Strategy
  description: Clients should implement exponential backoff with jitter and honor any Retry-After headers on 429 or 5xx responses.
- name: Publication Cadence
  description: Day-ahead auction results are published once per day after the market coupling session completes; schedule fetches to the publication window instead of continuous polling.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com