On this page you will find relevant information for your company to do business with Tenaz Energy Netherlands B.V. (TEN).
This entails not only the General Terms & Conditions, but also safety regulations and invoicing instructions.
Purchase Orders
General Terms & Conditions
Below Terms & Conditions are valid for all Purchase Orders (PO’s) provided by TEN. Other terms and conditions, unless agreed in writing otherwise, are explicitly rejected.
General Terms & Conditions (version September 2025)
PO Important Notes
Each PO has the following document attached giving the key instructions.
Important Notes (version September 2026)
Health, Safety and Environment (HSE) Requirements
General Requirements
CONTRACTOR shall familiarise itself with, and apply, the guidelines as set out in 'IOGP report 423 HSE management - guidelines for working together in a contract environment'. CONTRACTOR shall ensure these guidelines are incorporated into its activities and shall manage all Health, Safety, and Environment (HSE) risks in accordance with the principles described in this report.
Minimum Training Requirements
For all work to be executed at TEN’s on- or offshore assets, all workers need to be adequately trained in accordance with the requirements as set out in below document, prior to executing any work.
Minimum Training Requirements
Registration and completion of trainings take place via Tenaz’ Contractor Training Portal:
VANTAGE
To proof a worker has met all the necessary requirements, certificates, diploma’s etc. need to be uploaded into VANTAGE or sent to psl@onepeterson.com.
Instructions for Helicopter Passengers
Providing key information
CONTRACTOR is obligated to inform COMPANY of all names, vantage numbers and all additional luggage (>15kgs) at least three days prior to departure.
Check-in times
All check-in times will be available one (1) working day prior to departure between 14:00 and 16:00 hours.
Baggage and Freight constraints
Additional bags (i.e. laptop bags and/or PPE bag) will need to be checked-in in advance by CONTRACTOR.
Freight (i.e. hand-tools, equipment) are not included in these limitations, but also need to be checked-in in advance. Please inform COMPANY in advance if applicable. Freight and/or additional bags that are not checked-in in advance will NOT be carried on the flight.
Legal documents
Please be aware that all passengers need to have an international passport. A European ID Card does NOT suffice.
More information
For more information you can have a look at the website of Elementnl.
Invoicing Instructions
Invoicing of SERVICES
For invoices covering SERVICES provided, the vendor requires a SERVICE ENTRY (SE) number. This SE number can be obtained by submitting a PDF pro-forma invoice to ProformaNL@tenazenergy.com. This PDF should include the PO number and any relevant Proof-of-Delivery (POD) documentation e.g. approved timesheets, service reports and certifications.
TEN will create the SE and will provide CONTRACTOR with the SE number. This SE number should be mentioned on the actual invoice that is submitted to COMPANY’s Accounts Payable department.
Invoicing requirements
Each and every original invoice submitted to TEN for payment, should contain: Details of the total amount payable SERVICE ENTRY number (only in case SERVICES is provided) CONTRACTOR’s Bank Account details CONTRACTOR’s VAT number COMPANY’s PURCHASE ORDER number COMPANY’s VAT number: NL863955058B01 COMPANY’s formal address, being: Tenaz Energy Netherlands B.V. Attn. Accounts Payable Stationsweg 7-9 9711 AC GRONINGEN THE NETHERLANDS
VAT code: NL863955058B01 It has TEN’s preference that all invoices are submitted as an electronic document in the PDF-format.
PDF-format requirements
The PDF-format should meet the following requirements: Multi-page documents must be submitted as one PDF file. Zip files cannot be accepted The PDF should have a resolution of 300 dpi (Dots Per Inch) Invoices sent in a changeable format will be rejected (i.e. Word or Excel formats) PDF filename should consist of alphanumeric characters and underscores only PDF filename should have maximum length of 50 characters One Invoice or Credit Note per PDF. Note: If more than one document is contained within the PDF file only the first document will be accepted Include all relevant documentation, e.g. POD and approved timesheets Any other documents sent can lead to delays in payments Do NOT submit both PDF and paper invoice for the same payment or submit the PDF invoice multiple times as this creates errors in the payment process and can lead to delayed payment.
Sending in Invoices
Only original and correctly prepared invoices or credit notes are accepted. Please send them to AccountsPayablePL@tenazenergy.com.
PLEASE NOTE: invoices sent to an other email address than mentioned above, will not be forwarded and/or processed. Non-compliance to the requirements mentioned above, may lead to rejection of the invoice and/or cause delay in payment.