The plan to build tropical sauna islands in Helsinki's frozen sea

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New Atlas reports, citing architecture firm Carlo Ratti Associati, that Helsinki has named the Helsinki Hot Heart project as the winner of its Helsinki Energy Challenge.

If the project does go ahead, it will be built in the ocean next to the city and will consist of an archipelago of ten artificial islands built on top of huge water basins.

Each basin will measure 225 meters in diameter and hold up to ten million cubic meters of water.

Energy drawn from wind, sunlight and other renewable sources will power heat pumps that will heat water and pump it into the huge water basins.

The tanks will act like a big thermal battery, storing the hot water until it's pumped into the city's heat-distribution network, as required.

Additionally, thanks to all the heat being produced, four of the large islands will serve as recreational parks, with pools and tropical forests installed.

The idea is that these will be encased within a transparent dome and LED lighting, allowing locals to enjoy warm parks in the middle of winter.

The idea was inspired by the Finnish ideal that everyone has the right to relax and enjoy nature.

RUNDOWN SHOWS:
1. Zoom from global to local, show project's location off city shoreline
2. Show aerial side view of project, zoom on one basin, show size and depth
3. Wind turbine, solar panel, with cables feeding electricity to ocean heat pumps
4. Ocean heat pumps pump hot sea water to project's giant water basins, from basins to city heat grid
5. Side aerial view of project, highlight four dome-covered parks, zoom, remove roof to reveal forest and hot pools
6. People enjoying hot, steaming tropical park, hot steaming pools and beaches

VOICEOVER (in English):

"New Atlas reports, citing architecture firm Carlo Ratti Associati, that Helsinki has named the Helsinki Hot Heart project as the winner of its Helsinki Energy Challenge."

"If the project does go ahead, it will be built in the ocean next to the city and will consist of an archipelago of ten artificial islands built on top of huge water basins."

"Each basin will measure 225 meters in diameter and hold up to ten million cubic meters of water."

"Energy drawn from wind, sunlight and other renewable sources will power heat pumps that will heat water and pump it into the huge water basins."

"The tanks will act like a big thermal battery, storing the hot water until it's pumped into the city's heat-distribution network, as required."

"Additionally, thanks to all the heat being produced, four of the large islands will serve as recreational parks, with pools and tropical forests installed."

"The idea is that these will be encased within a transparent dome and LED lighting, allowing locals to enjoy warm parks in the middle of winter."

"The idea was inspired by the Finnish ideal that everyone has the right to relax and enjoy nature."

SOURCES: New Atlas, Inhabitat, The Architects' Journal, CarloRatti.com
https://newatlas.com/architecture/carlo-ratti-associati-hot-heart-helsinki/
https://inhabitat.com/a-tropical-forest-will-soon-grow-in-helsinki-and-provide-all-the-citys-heat/
https://www.architectsjournal.co.uk/epic-games/carlo-ratti
https://carloratti.com/project/hot-heart/