With respect to gas production in the Netherlands, some relevant information is published by Gasunie Transport Services (GTS).
For the NAM Under Ground Storage facilities more information can be found on the GIE transparancy website.
REMIT urgent messages and planned availabilities
Starting as of 01-01-2017 NAM will publish a webfeed with REMIT Urgent Market Messages for any unplanned unavailability of the Groningen field, Norg UGS and Grijpskerk UGS to comply with ACER/REMIT requirements. Please use an appropriate RSS REMIT UMM-tailored reader to process the feed. Some basic data will be available in the item tags, readable by readers such as Microsoft Outlook.
The NAM production schedule and urgent market messages are published at www.remit-nam.nl.