What CEA 4.0 Demands: Rigor at Every Layer of the Greenhouse Stack
CEA 4.0 is not a buzzword. It is a demand for rigor across climate, structure, equipment, finance, and operations.
About Gebbora
The engine behind every growing decision.
Gebbora is a web-based simulation and design platform for controlled environment agriculture. We build the tools that greenhouse engineers, farm owners, consultants, and agronomists need to make confident, data-backed decisions, from pre-design feasibility all the way through daily operations.
The Name
Gebbora draws from the roots of ancient mythology: Geb (𓅬𓃀𓀭), the god of earth and fertile soil; or, the agent or doer; and Ra (𓇳), the god of sun. Together: the agent of earth and sun. A name that reflects what we build: tools grounded in the physics of soil, light, climate, and growth.
Our Mission
To make greenhouse and CEA design accessible to every professional who needs it, not just those with access to university research tools or six-figure consulting budgets.
Our Vision
A global agriculture industry where every greenhouse is designed with real climate data, cited physics, and transparent methodology, before the first foundation is poured.
Why We Exist
Designing a greenhouse means balancing dozens of interrelated variables: cover materials, heating, cooling, lighting, shading, ventilation, and crop requirements, all of which interact with the local climate in ways that spreadsheets and intuition can't reliably capture. Proper climate modelling is the difference between a greenhouse that thrives and one that underperforms from day one.
The simulation tools that do exist sit in one of three boxes: locked inside universities (KASPRO at WUR, Cornell GEM, Virtual Grower at USDA), built for generic buildings (TRNSYS, EnergyPlus, OpenModelica), or sold as enterprise consulting engagements (Hortinergy, paid annual licence). The result: most greenhouse projects worldwide are designed on experience and best guesses.
Gebbora closes that gap. Purpose-built greenhouse physics. Real hourly climate data for any location on Earth. Results in under 30 seconds. From a browser.
What We Believe
Every variable, every interaction.
A greenhouse is a system. Our tools model the full picture so nothing is designed in isolation.
Precision you can measure.
Up to 10 years of hourly climate data per location, sourced from PVGIS (using SARAH-2/3 satellite radiation), Open-Meteo, and ERA5 reanalysis. Sentinel-2 multispectral imagery integration coming soon. 8,760 hours of physics simulation per run. We don't approximate where precision matters.
Show your work.
Every equation, material source, and crop reference in Gebbora is documented and cited. If you want to check our methodology, you can.
Rigor is the product.
We validate against published research, not just our own assumptions. Diligence in methodology is not optional.
Open a browser and go.
No software installation. No university licence. No IT department. Configure your greenhouse, run the simulation.
Built by people who know the field.
Our team brings deep, hands-on experience in CEA operations, agronomy, and sustainability. We build for real-world conditions because we've worked in them.
What We're Building
Gebbora started with the Greenhouse Simulator, the first tool live at sim.gebbora.app. The platform expands into a full-lifecycle CEA stack: Gebbora CAD (BOQs and structural design), Gebbora Numbers (feasibility and financial modelling), and Gebbora Companion (mobile decision support and operations). One platform, one account, every tool a professional grower or consultant needs.
Recent thinking
Notes from the Gebbora team on greenhouse design, feasibility, and operations.
VPD, DLI, and PAR: The Three Numbers That Define Greenhouse Performance
VPD, PAR, and DLI explained for glass houses, vertical farms, and open fields -- with the units, ranges, and citations the cannabis-tool literature skips.
What 8,760 Hours of Climate Data Reveals That a Design Day Can't
A design day captures one hour of stress. The other 8,759 are where greenhouse economics, crop stress, and investor risk actually live.
Who We Are
Developed by a team with over 200 years of combined experience across controlled environment agriculture, sustainability, ecology, and agronomy. We let the tools speak for themselves.
Simulate. Design. Grow.