( da, Pelvorm; North Frisian ''Polweerm'') is a municipality in the district of

Nordfriesland Nordfriesland (; da, Nordfrisland; frr, Nordfraschlönj ), also known as North Frisia, is the northernmost district of Germany, part of the state of Schleswig-Holstein. It includes almost all of traditional North Frisia (with the exception ...

, in

Schleswig-Holstein Schleswig-Holstein (; da, Slesvig-Holsten; nds, Sleswig-Holsteen; frr, Slaswik-Holstiinj) is the northernmost of the 16 states of Germany, comprising most of the historical duchy of Holstein and the southern part of the former Duchy of Sc ...

, Germany. The municipality is located on the island of Pellworm – one of the

North Frisian Islands The North Frisian Islands (''Öömrang'' and '' Fering'' frr, Nuurdfresk Eilunen, ''Söl'ring'' frr, Nuurđfriisk Ailönen, link=no, da, Nordfrisiske Øer, german: Nordfriesische Inseln) are the Frisian Islands off the coast of North Frisia. T ...

on the

North Sea The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian ...

coast of Germany. Its area is 37 km², and its population is roughly 1,200. A landmark is the Old Church (german: Alte Kirche) with its

Arp Schnitger Arp Schnitger (2 July 164828 July 1719 (buried)) was an influential Northern German organ builder. Considered the most paramount manufacturer of his time, Schnitger built or rebuilt over 150 organs. He was primarily active in Northern Europe, es ...

organ Organ may refer to: Biology * Organ (biology), a part of an organism Musical instruments * Organ (music), a family of keyboard musical instruments characterized by sustained tone ** Electronic organ, an electronic keyboard instrument ** Hammond ...

from about 1710. In medieval times Pellworm was a part of the larger island of

Strand Strand may refer to: Topography *The flat area of land bordering a body of water, a: ** Beach ** Shoreline * Strand swamp, a type of swamp habitat in Florida Places Africa * Strand, Western Cape, a seaside town in South Africa * Strand Street ...

which was torn into pieces in the disastrous

Burchardi flood The Burchardi flood (also known as the second Grote Mandrenke) was a storm tide that struck the North Sea coast of North Frisia and Dithmarschen (in modern-day Germany) on the night between 11 and 12 October 1634. Overrunning dikes, it shatter ...

in 1634. Other remnants of Strand are

Nordstrand Nordstrand may refer to: Places ;Germany * Nordstrand, Germany, a peninsula in Germany * Nordstrand (Amt), a former municipality in Nordfriesland, Germany ;Norway * Nordstrand, Norway, a borough in Oslo, Norway * Søndre Nordstrand, a borough in ...

and the

Hallig The ''Halligen'' (German, singular ''Hallig'', ) or the ''halliger'' (Danish, singular ''hallig'') are small islands without protective dikes. They are variously pluralized in English as the Halligen, Halligs, Hallig islands, or Halligen islands. ...

en. All these belonged to the historical region of

Uthlande Uthlande, Utlande ( Low German or Old Danish: ''The outer lands'', in Danish also: ''Friselagen'') is a term for the islands, halligen and marshes off the mainland of North Frisia in the Southwest Jutland, modern Nordfriesland district, German ...

. Pellworm is accessible by a

ferry A ferry is a ship, watercraft or amphibious vehicle used to carry passengers, and sometimes vehicles and cargo, across a body of water. A passenger ferry with many stops, such as in Venice, Italy, is sometimes called a water bus or water ta ...

departing from the neighbouring

peninsula A peninsula (; ) is a landform that extends from a mainland and is surrounded by water on most, but not all of its borders. A peninsula is also sometimes defined as a piece of land bordered by water on three of its sides. Peninsulas exist on a ...

of Nordstrand (which is in turn connected with the mainland by a road

causeway A causeway is a track, road or railway on the upper point of an embankment across "a low, or wet place, or piece of water". It can be constructed of earth, masonry, wood, or concrete. One of the earliest known wooden causeways is the Sweet Tr ...

). The island hosts one of the largest hybrid renewable energy plants in Europe. It combines 2.7 MW

solar panels A solar cell panel, solar electric panel, photo-voltaic (PV) module, PV panel or solar panel is an assembly of photovoltaic solar cells mounted in a (usually rectangular) frame, and a neatly organised collection of PV panels is called a photo ...

; 5.7 MW

wind energy Wind power or wind energy is mostly the use of wind turbines to generate electricity. Wind power is a popular, sustainable, renewable energy source that has a much smaller impact on the environment than burning fossil fuels. Historically, w ...

and 0.5 MW of

biogas Biogas is a mixture of gases, primarily consisting of methane, carbon dioxide and hydrogen sulphide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste. It is a ...

digestion plant with to provide over 700 MWh/year of electricity. Since the island's average electricity production capacity exceeds its average demand multiple times, yet there is a time mismatch between the two, this site was chosen for EU's largest stationary energy storage facility ca. 2015. In 2022 the island hosts a 560 kW/560 kWh

lithium-ion battery A lithium-ion or Li-ion battery is a type of rechargeable battery which uses the reversible reduction of lithium ions to store energy. It is the predominant battery type used in portable consumer electronics and electric vehicles. It also s ...

, a 200 kW/1600 kWh vanadium flow battery, and a thermal storage unit. Gildemeister, now Cellcube part of Enerox, supplied the vanadium battery. Together with several smaller islands, Pellworm forms the ''Amt'' of

Pellworm ( da, Pelvorm; North Frisian ''Polweerm'') is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany. The municipality is located on the island of Pellworm – one of the North Frisian Islands on the North Sea coast o ...

References

{{Authority control North Frisian Islands Nordfriesland Islands of Schleswig-Holstein