Wärtsilä has switched service providers and updated its e-invoicing details effective 20 May 2026 for the following countries: Finland, Switzerland, Nigeria, Poland, and Norway (excluding Gas Solutions). All suppliers have been informed of the change. If you have not received the information, please contact your Wärtsilä contact person.
Official info of change of invoicing channels including new e-invoicing and PDF addresses can be found here: Official info change of invoicing channels [PDF]
Wärtsilä promotes the digital exchange of information and thus provide digital collaboration tools for its suppliers to exchange information with Wärtsilä related to procurement, logistics and product quality assurance.
If you are interested in these tools, please contact Wärtsilä's supply management professionals who will assist you with the implementation of the tools.
Tools for suppliers can be found here: https://my.wartsila.com
E-invoicing is our priority. Please use the link below to access the e-invoicing guidelines.
If an e-invoice cannot be used for the Wärtsilä entity in the invoice receiving country, please use the link below to access the PDF guidelines.