Qualla: HVDC DolWin1 https://qualla.com/hvdc-dolwin1 en-us © 2026 Bendyline Mon, 20 Jul 2026 10:21:34 GMT Qualla serial false Qualla support@bendyline.com yes https://qualla.com/_res/siteimages/rsslogo.png Qualla: HVDC DolWin1 https://qualla.com/hvdc-dolwin1 HVDC DolWin1: Introduction https://qualla.com/hvdc-dolwin1/ From a thousand feet up, DolWin Alpha looks like a hotel that lost its way — a yellow industrial slab, 64 by 42 metres, perched on legs in the open North Sea about 100 kilometres from shore. There are no rooms inside, no balconies. The structure is essentially a 12,000-tonne electrical substation that someone decided to build in the ocean. Its single job is to take alternating current from a cluster of wind turbines, convert it to direct current, and send it down 165 kilometres of cable to the German mainland. DolWin1 is the link that makes the entire German offshore wind project economic.

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]]> Sun, 17 May 2026 00:00:00 GMT https://qualla.com/_m/u/1/s/e/hvdc-dolwin1-wp/u1se-hvdc-dolwin1-intro.mp3 0:06 1 full HVDC DolWin1: Why DC, Out Here https://qualla.com/hvdc-dolwin1/ Alternating current loses too much power over long subsea distances; cables behave like big capacitors and bleed energy as they reach toward the coast. Above about 70 kilometres of seabed, conventional AC stops penny-pencilling and high-voltage DC starts making sense. DolWin1 run...

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]]> Sun, 17 May 2026 00:00:00 GMT https://qualla.com/_m/u/1/s/e/hvdc-dolwin1-wp/u1se-hvdc-dolwin1-why-dc-out-here.mp3 0:06 2 full HVDC DolWin1: The Yellow Box on Stilts https://qualla.com/hvdc-dolwin1/ DolWin Alpha was built ashore, not at sea. Heerema assembled the topside in Zwijndrecht, Netherlands, where it slowly grew into something the size of a city block before being floated out to the German Bight in 2013 and lowered onto a fixed jacket foundation. Inside, ABB's Cascad...

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]]> Sun, 17 May 2026 00:00:00 GMT https://qualla.com/_m/u/1/s/e/hvdc-dolwin1-wp/u1se-hvdc-dolwin1-the-yellow-box-on-stilts.mp3 0:06 3 full HVDC DolWin1: Energiewende, Wired https://qualla.com/hvdc-dolwin1/ DolWin1 is one stitch in a much bigger seam. Germany's Energiewende — the political project of replacing nuclear and coal with renewables — committed the country to building gigawatts of offshore wind capacity in the German Bight, far from the load centres that need the power. Th...

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]]> Sun, 17 May 2026 00:00:00 GMT https://qualla.com/_m/u/1/s/e/hvdc-dolwin1-wp/u1se-hvdc-dolwin1-energiewende-wired.mp3 0:06 4 full HVDC DolWin1: Quietly Online https://qualla.com/hvdc-dolwin1/ There was no dramatic switching ceremony. The platform was installed in August 2013, trial operation with Borkum West began in December 2014, and TenneT — the Dutch-owned grid operator that runs much of northern Germany's transmission — formally took ownership in July 2015. It wa...

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]]> Sun, 17 May 2026 00:00:00 GMT https://qualla.com/_m/u/1/s/e/hvdc-dolwin1-wp/u1se-hvdc-dolwin1-quietly-online.mp3 0:06 5 full