# Controlled-Environment Agriculture

> Provider: [DutchGreenhouses](/)

Controlled-environment agriculture grows crops inside a structure whose conditions are specified rather than observed. It is defined by degree of control rather than by any building, running from a shade house that only tempers the sun to a sealed room holding temperature, humidity, carbon dioxide and light to setpoints.

## Facts
| Property | Value |
|---|---|
| Defining variable | Degree of control variable |
| Branches by light source | 2 branches |
| Commercial consequence | Volume on a date outcome |
| Variables typically held to setpoint | 4 variables |
| What decides where a project sits | 3 inputs |

Horticulture

# Controlled-environment agriculture.

    Growing where the climate is an input you choose, not a condition you accept.

## Growing where the climate is an input, not a condition

    Open-field agriculture produces what the weather permits. A season is good or it is not, and the grower absorbs the difference. Controlled-environment agriculture removes that dependency by putting the crop inside a structure whose conditions are specified rather than observed — and the commercial consequence is not simply higher yield but a predictable one. A buyer can be promised volume on a date. That single shift, from harvest as an outcome to harvest as a schedule, is what makes protected growing bankable in places where open-field farming is not.

CEA is defined by the degree of control rather than by any particular building. It runs as a spectrum: at one end a shade house that tempers the sun and nothing else, at the other a sealed room where temperature, humidity, carbon dioxide and light are each held to a setpoint. Everything in between is a matter of how many variables the structure takes charge of. That is why protected cultivation is the broader category and CEA the narrower one inside it — a structure can protect a crop without controlling anything.

The division that matters commercially sits one level further down, and it is about light. In greenhouse horticulture the sun is the primary light source and the building’s work is to trap, transmit and manage it; supplemental lamps top that up. In indoor farming light is generated outright, and the crop is grown without daylight at all. The first buys a large share of its energy from the sky for nothing; the second buys all of it, and pays for the control that brings. Neither is the better answer in the abstract — the site’s latitude, radiation and electricity price decide it.

Where a project lands on that spectrum determines almost everything downstream: the structure, the climate systems, the energy strategy and the operating cost for the next fifteen years. DutchGreenhouses® integrates the structure, climate, irrigation and control systems into one specification so the level of control matches the crop, the market and what the local climate will actually give, rather than defaulting to the most control available. Get in touch to establish the right degree of control for your project.

From the knowledge base

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## FAQ
**What is controlled-environment agriculture?**
Growing crops inside a structure whose conditions are specified rather than observed. It is defined by how many variables the structure takes charge of, not by what the structure is made of — which is why it runs as a spectrum from a shade house that only tempers the sun to a sealed room holding four variables to setpoints.

**How is CEA different from protected cultivation?**
Protected cultivation is broader. It covers any structure that modifies the natural environment, including ones that control nothing — a shade house protects a crop without regulating it. CEA is the subset where conditions are actively held to a target, so every CEA facility is protected cultivation but not the reverse.

**Is a greenhouse or an indoor farm the better choice?**
Neither in the abstract. A greenhouse takes most of its light from the sky for nothing and pays to manage it; an indoor farm generates all of its light and pays for the control that buys. Latitude, solar radiation and electricity price decide which economics work at a given site.

**Why does the degree of control matter commercially?**
Because it fixes the operating cost for the life of the facility. Where a project sits on the spectrum determines the structure, the climate systems and the energy strategy — so the aim is to match control to the crop, the market and what the local climate already gives, rather than to buy the most control available.

## Related
[Greenhouse Horticulture](/greenhouse-horticulture.md) · [Indoor Farming](/indoor-farming.md) · [Glass Greenhouse](/greenhouse-horticulture/glass-greenhouse.md) · [Automation](/automation.md) · [Climate](/climate.md) · [Hydroponics](/irrigation/hydroponics.md) · [Climate Computer](/glossary/climate-computer.md)

## See also
https://www.wikidata.org/wiki/Q16951286 · https://en.wikipedia.org/wiki/Controlled-environment_agriculture