Attention:

You are opening the website of CNX Construction, a building company which has been operated until 2018. The company mainly started as an sustainable company with the idea to build the www.Phisueahouse.com. The Phi Suea House Project is the worldwide first Hydrogen Multi-House compound which use of Enapter’s scalable Electrolysers. The former team meanwhile spread out to different activities.

We are sorry that we cannot give any reference for other building companies in the Chiang Mai region. However, feel free to see our building ideas on the following website.

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We strive to build homes with the highest energy standards and living conditions, while maintaining a low carbon footprint
CNX Construction is a team of inspired engineers, designers and architects dedicated to high quality and energy-efficient buildings

Consulting and Construction Services


Dedicated to high quality and energy-efficient buildings

From Design to Reality


Adept in special requests

Automation System Consulting
and Installation


Easy way to manage your house

24 Hours Electricity from the Sun


Produce your own electricity day and night

What does sustainability
mean to us?

We are committed to doing our part in environmental preservation by constructing high quality, energy efficient buildings. To have a minimal environmental impact, we try to limit waste, pollution and greenhouse gas emissions. We take a holistic approach to sustainability by working with a range of systems including: permaculture gardening, rain water collection and treatment, solar power and hydrogen as energy storage.

We are not alone in our goal to heal earth. Organizations like 350.org inspire us to take this small step towards solving the problems arising from the world’s growing energy demand. By extending our knowledge and expertise to others, we hope to over time form a cleaner, healthier world.

About Us

Building high quality homes means finding the right materials, partners and workers for the job. We’ve assembled a team of experts in their field who are always seeking to challenge themselves with different ideas and technologies. Our employees are perpetually evolving from attending new trainings and classes. CNX Construction is the only company in Northern Thailand with a KNX certification, the worldwide standard for home automation.

We believe the planning and building process should be based on a trustworthy partnership, so we take the time to discuss with our clients their individual needs and visions. We are in contact with our clients during every stage of the process, from the initial sketches, to 3D models to the physical construction. We prioritize quality design and transparency to ensure our clients’ safety, comfort and happiness.

About Us

Building high quality homes means finding the right materials, partners and workers for the job. We’ve assembled a team of experts in their field who are always seeking to challenge themselves with different ideas and technologies. Our employees are perpetually evolving from attending new trainings and classes. CNX Construction is the only company in Northern Thailand with a KNX certification, the worldwide standard for home automation.

We believe the planning and building process should be based on a trustworthy partnership, so we take the time to discuss with our clients their individual needs and visions. We are in contact with our clients during every stage of the process, from the initial sketches, to 3D models to the physical construction. We prioritize quality design and transparency to ensure our clients’ safety, comfort and happiness.

In The News

Phi Suea House’s Better Energy Storage System

- www.cleantechnica.com -
February 3, 2016

The sun shines more than 300 days a year in Chiang Mai, Thailand, and Hamburg entrepreneur Sebastian-Justus Schmidt says, “it is the perfect location for a solar energy system.” His Phi Suea House’s solar panels produce 6,000 kWh a month, enough to power 20 to 25 average North American households.

Phi Suea House’s Better Energy Storage System

- www.greencity.edu.my -
February 3, 2016

Originally published on the ECOreport The sun shines more than 300 days a year in Chiang Mai, Thailand, and Hamburg entrepreneur Sebastian-Justus Schmidt says, “it is the perfect location for a solar energy system.”

Thailand’s first off-the-grid hydrogen house

- www.sasin.edu -
Febuary 4, 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

- www.nationmultimedia.com -
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.

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

- www.solaris.co.th -
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.

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

- www.curbed.com -
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.

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

- www.ecowatch.com -
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.

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

- www.gizmag.com -
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.

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Thank you for help us make our customers’ visions a reality


Modern earth and bamboo architecture
and construction

Manufacturer and distributor of Solar
Water Heating Systems

Universal and intelligent
building control

European designed aluminum
glazing systems

Commercial kitchen and
bakery equipment

Food preservation systems

Climate-focused campaigns,
projects and actions

Photovoltaic system technology

The standard in home and
building control

Security vision systems

Modern earth and bamboo architecture
and construction

Manufacturer and distributor of Solar
Water Heating Systems

Universal and intelligent
building control

European designed aluminum
glazing systems

Commercial kitchen and
bakery equipment

Food preservation systems
 

Climate-focused campaigns,
projects and actions

Photovoltaic system technology
 

The standard in home and
building control

Security vision systems