What is a greenhouse's carbon footprint?

Dutch greenhouse cultivation emitted around 37 kilograms of carbon dioxide per square metre in 2024, temperature-corrected, and roughly a quarter of the sector's energy supply is already carbon-free. The sector works to a binding target of 4.3 megatonnes of residual emissions by 2030.

Why is decarbonising a greenhouse harder than decarbonising a building?

Because the combustion product is a crop input. Burning gas yields heat the crop needs at night and carbon dioxide it needs by day, and enrichment to around 800 parts per million is worth real yield. Removing the burner removes an enrichment supply that then has to be sourced externally.

How should a carbon figure be compared?

Per kilogram of produce rather than per square metre alone, and temperature-corrected. A facility can lower its emissions per square metre simply by growing less, which improves the reported number and nothing else.

Greenhouse Carbon Footprint — DutchGreenhouses

Q: What reduces emissions first?

Demand, before source. Screens and the covering shrink the heat requirement, which makes insulation the cheapest carbon measure as well as the cheapest energy one. Geothermal, heat pumps and electric heat then decide the emissions of whatever demand remains.

Why this is not the same problem as decarbonising a building

Where the sector stands

Dutch greenhouse cultivation put out around 37 kg of CO₂ per square metre in 2024, temperature-corrected.

About a quarter of the sector’s energy supply is already carbon-free, and the binding target is 4.3 megatonnes of residual emissions by 2030.

The direction is not in doubt. The difficulty is in a place most people do not look.

The greenhouse eats its own exhaust

Burn gas and you get two things the crop wants.

Heat, which it needs at night. And carbon dioxide, which it needs by day — dosed to around 800 ppm, and worth real yield.

A buffer tank exists precisely to reconcile those two demands: burn in daylight for the CO₂, store the heat, release it after dark.

So take the burner away and you have not just changed the heat source. You have removed a crop input. That gap has to be filled from somewhere else, and the cost of filling it belongs in the same calculation.

This is the bit that generic decarbonisation advice misses entirely.

Cut demand first. It is cheaper and it is neutral.

Screens and the covering shrink the heat requirement before any source decision is made.

That makes insulation the cheapest carbon measure as well as the cheapest energy one — and unlike a fuel switch, it does not take the CO₂ supply away with it.

Then geothermal through a heat exchanger, a heat pump, or electric heat decide the emissions of whatever demand is left.

Insist on the per-kilo number

A greenhouse can improve its emissions per square metre by growing less. The reported figure gets better and the business gets worse.

Per kilo of produce, temperature-corrected. That is the only version worth putting in front of a customer or a lender, and it is the version DutchGreenhouses® models.

Get in touch with your crop, your climate and your energy prices, and we will show you what the routes actually cost.

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