eSett API

eSett is upgrading its API platform to better support the Nordic electricity market. The current SOAP-based interface and Information Service will be replaced with a RESTful API built on OpenAPI standards, making integration easier, faster, and more secure.

The new REST API is read‑only. Market participants can retrieve data from eSett, but cannot send data to eSett using the API.

Modernizing Our API Services

eSett is upgrading its API platform to better support the Nordic electricity market. The current SOAP-based interface and Information Service will be replaced with a RESTful API built on OpenAPI standards, making integration easier, faster, and more secure.

The new REST API is read‑only. Market participants can retrieve data from eSett, but cannot send data to eSett using the API. Write capabilities may be considered in a later stage.

The eSett Information Service will be discontinued after 2027, and all functionalities will be fully available through the new REST API.

Why Are We Changing?

The energy market is developing quickly, and stakeholders need solutions that are simple to integrate and maintain. Our new REST API will simplify implementation, provide clear documentation through OpenAPI, and enable flexibility for future services. This modernization is based on feedback gathered through stakeholder surveys and interviews.

What Will Change?

We are transitioning from a SOAP‑based interface to a modern RESTful API built on the OpenAPI specification. This change introduces updated industry standards, improved security, and a dedicated environment where customers can test their integrations. Starting in 2027, the current Information Service will be fully phased out, and all data access will be handled exclusively through the new REST API.

The API provides one‑way access (eSett → market participant) for retrieving data. It is designed to replace the existing Information Service, but it does not replace eSett’s core messaging, data flows, or data packages. Existing channels remain in use, including ECP/EDX, SMTP, SFTP, and Webservice (HTTPS).

Implementation Timeline

 

Join Pilot Testing

Stakeholders are invited to participate in shaping the new API.

Thirteen selected use cases will be available in March for testing in the eSett test environment. All test data comes from our dedicated test environment—no production data is available.

Available Use Cases:

  • Activated Reserves
  • Bilateral Trades
  • Capacity Reserves
  • Consumption
  • Imbalance Adjustment
  • Imbalance Prices
  • Market Parties
  • MGA Exchange
  • MGA Imbalance
  • Production Plan
  • Production
  • PX Market Flow
  • PX Market Trades

How to Request Access

Access to the test environment is only available to people who already have an Online Service user account.

To ensure you can begin testing immediately once the test environment opens, we kindly ask you to submit your source IP address (or IP range) and any required whitelisting details in advance. By receiving this information early, we can configure the necessary firewall rules ahead of time and help avoid delays when testing begins.

You can request access in two ways:

  1. Use the ready-made Outlook email template
    Simply open this Template Request eSett API access in Outlook, fill in the required information, and send it.
  2. Copy and paste the text from this document
    Copy the content from the document Requesting access to eSett API, complete the fields, and send the email to the address provided in the document.

Once we receive your request, eSett will review the information, set up the necessary firewall rules based on your IP details, and contact you with the next steps for issuing your credentials.