Semi-closed greenhouse

What is a semi-closed greenhouse in 2026?

In 2026, greenhouse horticulture faces a clear challenge: producing more with less energy, water, and CO₂ emissions while demand for high-quality crops continues to grow. For many professional growers and investors, the focus is increasingly on predictability. How do you create a stable growing environment regardless of outdoor conditions? The answer lies in the semi-closed greenhouse.

What is a semi-closed greenhouse in 2026?

A semi-closed greenhouse combines natural ventilation with active climate control. Unlike a traditional greenhouse, where the climate is largely managed through roof vents, a semi-closed greenhouse uses controlled air intake, air treatment, and air distribution systems to manage the internal environment.

As a result, temperature, humidity, air movement, and CO₂ levels can be controlled much more precisely.

The outcome is a growing environment that is less dependent on external weather conditions and therefore more predictable for both growers and investors.

What is a semi-closed greenhouse in 2026?

Current developments in greenhouse horticulture show that sustainability, energy efficiency, and climate control are becoming increasingly important. Energy savings, improved insulation, dehumidification, and smart climate strategies are among the sector's top priorities in 2026.

At the same time, growers are faced with:

• Rising energy costs;

• Stricter sustainability requirements;

• Limited availability of CO₂ sources;

• Increasing pressure on water usage;

• The need for greater production reliability.

A semi-closed greenhouse helps address these challenges by actively controlling the climate while reducing energy losses.

Greater control over the greenhouse climate

One of the biggest advantages of a semi-closed greenhouse is its ability to precisely manage the growing environment.

In traditional greenhouses, valuable heat and applied CO₂ are often lost through open roof vents. In a semi-closed greenhouse, this energy can be retained for longer periods. In addition, air can be actively dehumidified and distributed throughout the greenhouse, creating more stable growing conditions.

For the crop, this means:

• Fewer climate fluctuations;

• More uniform crop development;
  
  
• Better humidity control;
  
  
• More efficient use of CO₂;
  
  
• More consistent production results.
  
  

Energy-efficient and future-proof

The energy transition plays an increasingly important role in modern horticulture. Research into next-generation semi-closed greenhouses shows that significant energy savings can be achieved through intelligent dehumidification and heat management.

Combined with sustainable energy sources such as geothermal energy, heat pumps, waste heat, and thermal energy storage systems, the semi-closed greenhouse aligns perfectly with the direction in which the industry is moving.

This makes the semi-closed greenhouse not only a solution for today but also an investment in the greenhouse of tomorrow.

Stronger crops, fewer external influences

Because a semi-closed greenhouse operates with controlled airflow and positive pressure, diseases, pests, and unwanted external influences have fewer opportunities to interfere with the growing process.

This creates a more stable cultivation environment in which biological crop protection and sustainable growing strategies can perform optimally.

For growers, this results in a better balance between yield, quality, and sustainability.

KUBO's role 

At KUBO, we believe the future of greenhouse horticulture is built on maximum control, data-driven cultivation, and efficient use of natural resources.

That is why we developed the Ultra-Clima® concept: a proven semi-closed greenhouse system successfully implemented across a wide range of climate zones worldwide. Today, more than 700 hectares of Ultra-Clima® greenhouses have been realized globally.

By combining mechanical ventilation, air treatment, dehumidification, and intelligent climate management, Ultra-Clima® helps growers achieve stable production, improved energy efficiency, and more predictable cultivation results.

Conclusion

In 2026, successful greenhouse horticulture is no longer just about production. It is about managing risks and making the most efficient use of available resources.

The semi-closed greenhouse offers growers a powerful solution for optimizing climate control, energy use, and crop production.

With greater control over the greenhouse climate, more efficient use of energy and CO₂, and a more stable growing environment, the semi-closed greenhouse is becoming a key building block for the future of sustainable food production.

For growers ready to take the next step in climate control, the semi-closed greenhouse provides not only greater certainty but also greater opportunities for growth.

For large-scale horticultural growers and investors, greenhouse projects are increasingly about predictability. How do you maintain a stable climate, increase energy efficiency, and achieve reliable production while using as little water, energy, and CO₂ as possible?

A semi-closed greenhouse offers greater control over the conditions in which crops grow. By combining mechanical ventilation, positive pressure, and targeted air treatment with limited natural ventilation, temperature, humidity, air movement, and CO₂ levels can be controlled more precisely.

For large-scale horticultural projects, this supports more stable growing conditions, more efficient use of resources, and more predictable crop yields. As a result, semi-closed greenhouse technology plays a key role in both horticultural profitability and the development of sustainable food production.

KUBO applies this principle in Ultra-Clima®, our proven semi-closed greenhouse concept. More than 700 hectares of Ultra-Clima® have now been implemented worldwide.