ENTSO-E negatieve stroomprijs API — day-ahead energieprijs trigger voor het huidige uur. Ideaal als energy price webhook voor ZE-laad- en flexibiliteitsstrategieën.

GET /v1/energy/grid-trigger

Returns the current UTC hour's day-ahead electricity price from the ENTSO-E Transparency Platform and fires a trigger: true signal when the price is negative.

Negative electricity prices occur when renewable generation (wind, solar) exceeds grid demand. They are the standard signal for:

Smart EV charging controllers
Home and industrial battery storage systems
Industrial demand-response automation
Algorithmic energy trading and arbitrage

Request parameters

Parameter	Type	Required	Default	Description
`country_code`	string	✗	`NL`	ISO alpha-2 country code

Supported countries

AT, BE, CH, DE, DK, ES, FR, IT, NL, NO, PL, SE

Example request

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.omnizoek.nl/v1/energy/grid-trigger?country_code=NL"

Example response — negative price (trigger fires)

{
  "country_code": "NL",
  "current_price_eur_mwh": -12.50,
  "negative_price": true,
  "trigger": true,
  "period_start": "2026-03-06T13:00:00Z",
  "period_end": "2026-03-06T14:00:00Z",
  "retrieved_at": "2026-03-06T13:15:00Z"
}

Example response — positive price (no trigger)

{
  "country_code": "NL",
  "current_price_eur_mwh": 85.40,
  "negative_price": false,
  "trigger": false,
  "period_start": "2026-03-06T10:00:00Z",
  "period_end": "2026-03-06T11:00:00Z",
  "retrieved_at": "2026-03-06T10:05:00Z"
}

Response fields

Field	Type	Description
`country_code`	string	ISO alpha-2 country code
`current_price_eur_mwh`	number	Current hour's day-ahead price in EUR/MWh
`negative_price`	boolean	`true` when price is below 0 EUR/MWh
`trigger`	boolean	`true` when a demand-response trigger fires (currently same as `negative_price`)
`period_start`	string \| null	Start of the priced interval (ISO 8601 UTC)
`period_end`	string \| null	End of the priced interval (ISO 8601 UTC)
`retrieved_at`	string	UTC timestamp of the ENTSO-E query (ISO 8601)

Data source

ENTSO-E (European Network of Transmission System Operators for Electricity) publishes day-ahead market clearing prices once per day at approximately 12:00 CET. Prices are quoted in EUR/MWh.

Document type A44 — Day Ahead Prices. Parsed from the XML Publication_MarketDocument format.

Error responses

Status	Cause
`400`	Unsupported country code
`503`	ENTSO-E API is unreachable or `ENTSO_E_TOKEN` is not configured

Results are cached per country code for 55 minutes. Since ENTSO-E only publishes new prices once per day, the current-hour price does not change within a publication window — long caching is safe and keeps costs down.

Notes

Prices can be deeply negative (−200 to −500 EUR/MWh) during peak wind/solar events, especially in Germany, Netherlands, and Denmark.
The trigger field is currently a direct alias for negative_price. Future versions may add configurable threshold-based triggers (e.g. trigger: true when price < 20 EUR/MWh).
ENTSO-E prices are wholesale market prices, not retail tariffs. Retail customers typically pay a fixed rate regardless of spot prices.

Grid Trigger (ENTSO-E)