Positive
Project advancing - milestone achieved
Medium Impact
Significant progress or notable issue
According to Grokipedia's HVDC HelWin1 article, system integration and testing proceeded through 2014, with initial energization achieved that year and final handover to TenneT in early 2015 after the HelWin alpha platform installation in August 2013. This shows that the main system testing phase took place during 2014, later than the originally planned January 2013 start of test operations mentioned in earlier project announcements.