Miso Rate Limits
MISO publishes rate limits on exactly one of its two public data surfaces. The keyed MISO Data Exchange gateway (apim.misoenergy.org) enforces a hard, numeric, per-subscription rate limit and daily quota that MISO states in its own Data Exchange FAQ. The anonymous Public API (public-api.misoenergy.org) carries no enforced, documented limit at all — MISO instead publishes a politeness request on the RT Data APIs page asking callers not to poll faster than once per minute. Both are recorded here verbatim; the second is guidance, not an enforced limit, and is marked as such.
Miso Rate Limits is the machine-readable rate-limit profile for MISO on the APIs.io network, in the API Commons Rate Limits shape.
It captures 3 rate-limit definitions, measuring requests_per_minute and requests_per_day.
Limit state is signalled in the requestId, rateLimitRemaining, retryAfter, and note response headers, and an exhausted limit returns HTTP 429.
The profile also includes response codes documented for throttled and quotaExceeded.
Tagged areas include Rate Limiting, Energy, and Open Data.
requestIdrateLimitRemainingretryAfternote
Limits
Sources
- "MISO Data Exchange FAQs — states the 100 call/minute limit and 24,000 call/day quota.", "url" => "https://help.misoenergy.org/knowledgebase/article/KA-01489/en-us"}" target="_blank" rel="noopener">{"note" => "MISO Data Exchange FAQs — states the 100 call/minute limit and 24,000 call/day quota.", "url" => "https://help.misoenergy.org/knowledgebase/article/KA-01489/en-us"}
- "RT Data APIs page — the once-per-minute caching-politeness request for the anonymous Public API.", "url" => "https://www.misoenergy.org/markets-and-operations/RTDataAPIs/"}" target="_blank" rel="noopener">{"note" => "RT Data APIs page — the once-per-minute caching-politeness request for the anonymous Public API.", "url" => "https://www.misoenergy.org/markets-and-operations/RTDataAPIs/"}
- "Portal product metadata — subscriptionRequired true, approvalRequired false, subscriptionsLimit null.", "url" => "https://data-exchange.misoenergy.org/developer/products?api-version=2022-04-01-preview"}" target="_blank" rel="noopener">{"note" => "Portal product metadata — subscriptionRequired true, approvalRequired false, subscriptionsLimit null.", "url" => "https://data-exchange.misoenergy.org/developer/products?api-version=2022-04-01-preview"}
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.