A World’s First in Solar-Hydrogen Residential Development


Energy Saving . Water Management . Permaculture


Hydrogen Energy Summit 2018
Friday, January 26,2018

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The Phi Suea House is a sustainable residence project fully powered by photovoltaic panels harvesting the sun’s energy.

Its innovative hydrogen energy system is a central solution for community solar power and storage. We believe it is the answer to energy needs of the future, and is the solution that stores energy in the most effective and ecological way. We have combined strategies to minimize our impact on the land we live on. We designed and built a water collection system to save and reuse as much of the rain and irrigation water as possible. We directly harness heat provided by the sun to heat water with specifically engineered panels. We also integrated home automation for its potential in energy saving and carbon footprint reduction.

By utilizing windflow and growing a permaculture garden, we aim for a holistic approach to sustainable living.

The Phi Suea House project is a modular concept. It is ideally suited for residential or other developments in remote locations; or where complete independence from the grid is desired.

  • Energy Building
  • Guest House A & B
  • Main House
  • Workshop
  • Nursery
  • Sala/ Baan Din
  • Main Kitchen
  • Swimming Pool & Beach Volleyball

Energy building

The energy building has two functions: to store energy and distribute power. It has the largest array of solar panels and is divided in three rooms: the control room, hydrogen room and battery room.

Excess power from the photovoltaics is used to power electrolyzers that split water into its composite gases. The hydrogen gas is then stored in tanks. The energy storage is a hybrid battery-hydrogen system. The bulk of the nightly demand is covered by the fuel cells using hydrogen, while the batteries help cover short peaks in demand.


A World’s First in Solar-Hydrogen Residential Development

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Phi Suea House is a 100% self-sustaining 24-hour solar powered multi-house residence.

The first of its kind, the Phi Suea House is the materialization of our dream to achieve cleaner and more sustainable energy systems The most up-to-date sustainable technologies from around the world effectively power this residential development.

Our energy system is designed to store solar power in the most effective and ecological way. The hybrid hydrogen-battery system maximizes the advantages of both the hydrogen storage system and the batteries.

In simple terms, the energy of the sun is transformed via solar panels into electricity. Any excess power will be converted and stored as hydrogen. When the sun is not shining we will use the stored hydrogen gas from tanks to generate electricity by using fuel cells.

The system is safe, 100% scalable and its only by-products are oxygen and water, having minimal to no impact on the environment.


We have combined various strategies to minimize the impact on the land we live on.
We strive towards a holistic approach to sustainable living without compromising on standard of living.

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Innovation, creativity and local initiatives

The Phi Suea House is located in Chiang Mai, where we host a number of events in order to promote local projects and artists. It become a space to showcase innovative initiatives and inspire our community. At the events, we also share our learning experience overseeing the energy system and welcome any questions.

Hydrogen Energy Summit 2018

Friday, January 26, 2018

This day we will lay the foundation stone of the first green hydrogen refueling station in Southeast Asia. We invite all, institutes and universities, to join, gain knowledge, and participate in the process of planning and deploying this future technology. The event will give an overview of the latest developments in the field of hydrogen around the world, and reveal some upcoming technology. The following topics amongst others will be addressed: Energy in Thailand, Renewable technologies, Hydrogen technology basics, Thailand 4.0 and Hydrogen, Decarbonization of the energy sector, Etc.

We received the participation confirmation from leading Companies in the energy field, Chambers of Commerce and Government representatives, Embassies and Consulates, Institutes and Universities, the United Nation, other stakeholders, green enthusiasts and more.

This is a by-inviation only event. If you are interested in joining, please send your full name, title, company, email and phone number to

Please find more information here


WETV Channel

February 17, 2016

Lanna Society introduces the world's first 24-hour solar-powered hydrogen storage multi-house complex with a 100% clean and safe process.

NBT Channel

February 8, 2016

The world's first 24H solar-powered hydrogen storage multi-house residence, Phi Suea House project. A good opportunity for a 100% clean energy market in Thailand.

WETV Channel

February 5, 2016

Phi Suea House, the world's first 24-hour solar-powered hydrogen storage multi-house complex.

Thailand’s first off-the-grid hydrogen house

Febuary 3, 2016

The Phi Suea House project is a sustainable set of residences fully powered by solar panels using an innovative hydrogen fuel cell system to store its power. This is combined with a water collection and re-use system, and home automation, to maximize energy saving and minimize carbon footprint.

Software engineers branch out into sustainable construction

January 30, 2016

After their initial success in developing application software, German Sebastian Justus Schmidt and Nattapong Lekchaichan decided to diversify and establish a construction and architect advisory company, CNX Construction Co, for the development of energy-saving and sustainable buildings in Chiang Mai.

Water good idea: Solar-powered home stores energy as hydrogen

December 22, 2015

Although solar panels can be used to power a home with clean energy, demand for power fluctuates during the day and excess power is often also produced. A new development in Chiang Mai, Thailand, reportedly solves these problems. It converts excess power to hydrogen and stores it for use later.

High-Tech Homes Go Off-Grid With Solar and Hydrogen Power

January 22, 2016

All-day energy from the sun may sound like a green fantasy, but a team of builders and engineers in Thailand believe they may have built a home energy system that does just that.

World's First Solar-Hydrogen Residential Development Is 100% Self-Sustaining

December 23, 2015

We've seen individual homes that are completely off-grid, but there are very few residential developments that have this distinction. Thailand-based development company CNX Construction is set to debut the world's first 24-hour, solar-powered hydrogen storage multi-house complex.

High-Tech Homes Go Off-Grid With Solar and Hydrogen Power

January 22, 2016

Over the next few months, sensors installed by researchers at Nanyang Technical University in Singapore will record data on energy performance, to verify if the Phi Suea Homes are living up to their promise.

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Journalists / Download

So far, the project has been a success. We are working tirelessly to face the challenges and analyze the rewards of such a system. We want to share our shortcomings and successful partnerships in order to facilitate future projects and initiatives. By sharing what we have learnt during the design and implementation of such a system we hope to inspire and instigate future sustainable developments.