Xcel Energy · Rate Limits

Xcel Energy Rate Limits

Xcel Energy does not publish numeric rate limits for its Green Button Connect My Data (ESPI) or IEEE 2030.5 endpoints on the public-facing developer portal. The portal at developer-apim.aws.xcelenergy.com requires registration; rate-limit policy is gated behind that onboarding. ESPI is designed for batched daily data pulls rather than high-frequency reads.

Xcel Energy Rate Limits is the machine-readable rate-limit profile for Xcel Energy on the APIs.io network, in the API Commons Rate Limits shape.

It captures 2 rate-limit definitions, measuring varies and requests_per_second.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 3 backoff/retry policies defined.

Tagged areas include Rate Limiting, Energy Data, Green Button, and Utility.

2 Limits
Method: generated, dated 2026-05-05.
Written by API Evangelist on 2026-05-05 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
Rate LimitingEnergy DataGreen ButtonUtility

Limits

ESPI / Green Button Connect data feed (numbers not publicly documented) third-party-provider
varies
see Xcel Energy developer portal after onboarding
Green Button Connect data is published as periodic ESPI-formatted feeds rather than per-call resource fetches; throughput is governed by the customer-authorized data window and Xcel's batch-publishing schedule.
IEEE 2030.5 local smart-meter endpoint meter
requests_per_second
see IEEE 2030.5 specification and Itron Gen 5 Riva meter limits
IEEE 2030.5 is a local, customer-network protocol; per-meter request rates are bound by the meter hardware (Itron Gen 5 Riva) rather than a centralized Xcel quota.

Policies

Onboarding required
Public rate-limit numbers are not published; third parties must complete Xcel's data-recipient onboarding to receive the limits document.
ESPI batch model
Green Button Connect uses a publish-and-fetch model rather than transactional reads; clients should follow ESPI's NotificationLink / SubscriptionLink polling pattern.
Backoff
Standard guidance is exponential backoff with jitter on HTTP 429 / 503 responses.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

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  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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Call it yourself

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curl "https://apis.io/api/v1/rate-limits?limit=25"

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