Hello Watt catalog Open data in a single API request

Datasets published by Hello Watt. datasets available on official portal for European data

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Available datasets

Open data Portal Hello Watt catalog Open Data API in development

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10 villes de France avec le plus de passoires thermiques Open Data

Hello Watt vous montre les 10 villes françaises où se trouve ne plus grand nombre de passoires...

Issued on 2022-12-07T15:13:08.700

10 villes de France avec le plus de passoires thermiques details >

Repartition des éolionnes par département en France Open Data

Hello Watt a réalisé une étude sur la répartition des éoliennes par département en France. A travers...

Issued on 2022-12-07T11:48:40.808

Repartition des éolionnes par département en France details >
European data infrastructure with broad catalog discovery, free evaluation access and production-grade API options.
190K+
indexed dataset pages
32
countries and EU institutions
2019
API-first since
Free API quota
for evaluation and prototypes
SLA
history and push on production APIs
FAQ

Questions before production use

Practical answers on evaluation, licensing, freshness, versioning and support.

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Yes. Selected APIs include a free API quota, so your team can validate coverage, freshness, response shape and workflow fit before asking for a production plan.
Often yes, but usage rights depend on the source license and dataset. We surface source, license and update metadata where available, and can help review terms before a production integration.
Maintained APIs include update metadata where available. For production integrations, we can add history, monitoring and push updates so changes are easier to detect and act on.
Production APIs can add SLA, stable identifiers, versioning support, history, push updates and direct support around the data your product or AI workflow depends on.

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