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Harnessing Rainwater with Waterfalls in a High-Rise Community

Authors:
Jian Wang, Luyuan Yan, Zhixuan Zhu, Xing Liu
Harnessing Rainwater with Waterfalls in a High-Rise Community

Project in-detail

Rainwater cascades through integrated waterfalls in a super high-rise community, utilizing gravitational energy to generate clean electricity while providing sustainable living spaces for local residents.
5 key facts about this project
01
Rainwater collection system captures up to 1,035,000 cubic meters annually.
02
Integrated waterfalls create a visually dynamic façade.
03
The building stands at 960 meters, enhancing vertical living.
04
Designed to generate clean energy through hydroelectric systems.
05
Encourages local biodiversity with vegetation incorporated into the structure.

The Energy Stepwell project is located in Cherrapunji, Meghalaya, India, a region known for its heavy rainfall and rich green landscapes. The design aims to tackle two significant issues: climate change and energy poverty. A super high-rise building will serve as both a place for people to live and a facility for generating clean energy. By utilizing the abundant rainwater, the design intends to create a self-sufficient environment that provides reliable electricity while supporting the local ecosystem.

High-Rise Design

The building reaches a height of 960 meters, with a residential section positioned at 487 meters. It accommodates around 3,200 households across 80 floors, resulting in a total living area of about 256,000 square meters. This vertical design addresses the need for housing in a compact space. It incorporates residential units with practical energy solutions, making efficient use of the site's geography.

Hydrological Integration

A key feature is the advanced rainwater collection system built into the structure. This system is designed to efficiently capture rainwater falling on the building, with an estimated annual collection of up to 1,035,000 cubic meters. This harvested rainwater is essential for producing hydroelectric power. The energy generated will be used to meet the electricity needs of residents for lighting and cooling, helping to reduce dependency on less sustainable energy sources.

Ecological Considerations

The design integrates natural elements into the building’s façade, including waterfalls and greenery. This green facade not only adds visual interest but also helps support local biodiversity. By bringing nature close to the living space, the project encourages a balance between the built environment and the natural world. This focus on sustainability fits well with the aim of creating a resilient and eco-friendly community.

Functional Layers

The project is organized into multiple functional layers, incorporating systems for electricity storage, sewage treatment, and hydroelectric generation. Each layer serves a specific purpose, working together to support energy production and ecological health. This structured approach reflects a thoughtful response to community needs, showing a commitment to both human well-being and environmental responsibility.

The design features rainwater cascading down built-in waterfalls, enhancing the connection between water and architecture while highlighting the project’s dedication to sustainability.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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