Data centre waste heat greenhouse projects are gaining attention as growers look for ways to improve greenhouse energy efficiency and reduce heating demand. By recovering heat that data centres would otherwise reject, co-located greenhouse projects may be able to turn an industrial waste stream into a useful source of thermal energy.

What If a Greenhouse Could Use the Energy a Data Centre Rejects?

A data centre and a greenhouse appear to be very different facilities.

One runs servers.

The other grows plants.

But from an infrastructure perspective, they have an interesting relationship.

A data centre consumes large amounts of electricity and continuously produces heat that must be removed.

A greenhouse—particularly in a Canadian climate—can require significant amounts of heat to maintain productive growing temperatures through winter and shoulder seasons.

That raises an increasingly relevant question:

What if the heat one industry needs to remove could become an input for another?

That does not mean connecting a greenhouse directly to a row of servers.

It means designing an integrated energy system in which the system captures, transfers and potentially upgrades data centre waste heat for greenhouse heating rather than simply rejected to the environment.

The opportunity becomes even more interesting when electricity infrastructure, water, thermal storage, automation and nearby industrial resources are considered together.

“

Sustainable agriculture improves the food we eat, the air we breathe, and the jobs in our communities

Why This Conversation Matters Now

Canada is entering a period of rapid electricity-demand growth, and data centres are increasingly part of that conversation.

The Canada Energy Regulator‘s 2026 outlook assumes approximately 1.5 GW of additional Canadian data-centre load by 2030 in its Current Measures scenario. Its high-growth scenario examines the possibility of 12 GW by 2050, illustrating just how uncertain—and potentially significant—the sector could become.

Natural Resources Canada has also identified AI and data-centre expansion as an important source of future electricity demand requiring investment in generation, storage and electricity-delivery infrastructure.

That creates a broader planning question.

If major new infrastructure is going to consume electricity, reject heat and require substantial utility connections, can surrounding industries be designed to make productive use of some of those resources?

Therefore, greenhouses are one possible answer.

Waste Heat Is the Biggest Opportunity

Servers convert electrical energy into computing work, but ultimately that energy leaves the equipment primarily as heat.

The data centre must continuously remove that heat to protect its equipment.

From the data centre’s perspective, it is a cooling problem.

From the greenhouse’s perspective, it may be an energy resource.

The U.S. Department of Energy identifies nearby heat users as one of the key requirements for successful data-centre heat-reuse projects. It also notes that heat recovery becomes more attractive when the temperature of the recovered air or water is high enough to match the receiving application.

Greenhouses are particularly interesting because many greenhouse heating systems can operate with relatively low-temperature hot water compared with some industrial processes.

Research has demonstrated the potential.

A study modelling a 1 MW data centre and greenhouses in northern Sweden found that recovered data-centre heat could supply approximately 90–98% of the heating demand of a 2,000 m² greenhouse under the scenarios studied. Larger greenhouse configurations could still obtain a substantial portion of their heating requirement from recovered heat.

The exact performance will vary enormously from project to project.

But the basic energy relationship is compelling:

That is the basis for industrial symbiosis.

“

We are expanding opportunities for sustainability both in our products and how we produce them.

Canada Is Already Testing the Model

This is not only a theoretical concept.

One of Canada’s most important examples is developing in Lévis, Québec.

The Government of Québec reports that Les Fraises de l’Île d’Orléans received $40 million through its waste-heat recovery program to capture heat from the nearby QScale computing centre.

Developers are building a 12-hectare greenhouse complex near the facility and expect recovered data-centre heat to provide almost all of its heating.

According to the Québec government, the project is expected to avoid more than 23,000 tonnes of CO₂ -equivalent emissions annually while supporting local agricultural production.

QScale’s Lévis campus was specifically designed with waste-heat recovery and nearby agricultural use in mind. Its current development materials describe greenhouse agriculture as one of the intended uses for recovered thermal energy.

That is significant.

Instead of asking how to dispose of the heat after the data centre is constructed, the surrounding land use can be planned around the resource.

That changes waste-heat recovery from an equipment decision into a regional infrastructure decision.

Waste Heat Is Valuable—but It Is Not Free Heat

It is tempting to describe data-centre heat as “free energy.”

Technically, the waste heat already exists.

Economically, however, using it is not free.

A greenhouse may still require:

• heat exchangers;
• circulation pumps;
• insulated piping;
• heat pumps;
• thermal storage;
• control systems;
• metering;
• backup boilers or other heating capacity;
• redundant systems; and
• maintenance infrastructure.

Distance matters enormously.

Heat that is valuable 50 metres from a data centre may be much less attractive several kilometres away.

Temperature matters too.

Depending on the cooling architecture, recovered heat may not be hot enough to feed the greenhouse heating network directly.

A heat pump may therefore need to raise the recovered heat to the temperature required by the greenhouse.

The Department of Energy recommends locating heat consumers close to data centres and matching the available heat temperature with the receiving application whenever possible.

So the important question is not:

“Does the data centre produce heat?”

It certainly does.

The better question is:

“Can that heat be economically delivered at the temperature, volume and time the greenhouse requires it?”

Electricity Infrastructure Creates Another Opportunity

Heat gets most of the attention, but co-location can also shape how electrical infrastructure is planned.

Large data centres may require substations, transmission connections, transformers, backup generation, energy storage and advanced energy-management systems. Greenhouses can also have significant electrical demand from lighting, heat pumps, fertigation, HVAC, automation and cold storage.

This creates opportunities to coordinate infrastructure planning.

However, a nearby data centre does not automatically mean spare electricity is available for a greenhouse. Data centres can create extremely large new loads. Alberta, for example, reported about 19,565 MW of requested new data-centre connections as of July 2026, while its first-stage allocation was 1,200 MW.

The opportunity is therefore not simply sharing electricity. It is coordinating:

generation + storage + substations + transmission + heat recovery + greenhouse demand

as one integrated infrastructure system.

What About CO₂?

This is where the concept needs to be explained carefully.

Commercial greenhouses often supplement carbon dioxide because increased CO₂ concentrations can support photosynthesis when light, temperature and other environmental conditions are appropriate.

But computer servers themselves are not a useful source of greenhouse CO₂ .

Growers should not confuse a data centre’s exhaust heat with combustion exhaust.

If the data centre operates only on grid electricity, its cooling system may provide heat, but it does not generate a concentrated stream of plant-usable CO₂ .

However, the situation may become different in an integrated energy campus.

For example, a development could potentially include:

• combined heat and power;
• biogas generation;
• renewable natural gas;
• industrial carbon capture;
• biomass facilities; or
• another nearby source of recoverable CO₂ .

In those cases, properly cleaned and controlled CO₂ could potentially become another input for greenhouse production.

But it must be designed as a separate engineered system.

Waste heat and CO₂ should not be treated as the same resource.

Could Data Centres and Greenhouses Share Water Infrastructure?

Potentially—but again, the opportunity is mostly in infrastructure integration, rather than simply moving water from one operation into the other.

Data centres may require water for certain cooling technologies, while greenhouses need water for irrigation, fertigation, cleaning and other operational purposes.

A co-located development could potentially evaluate:

• rainwater harvesting;
• water storage;
• wastewater treatment;
• reclaimed water;
• condensate recovery;
• closed-loop cooling;
• filtration;
• water-quality monitoring; and
• shared utility infrastructure.

However, greenhouse irrigation water has specific quality requirements.

Operators cannot simply assume that water from a cooling system is appropriate for crops.

Chemical composition, microbial quality, salts, treatment chemicals and temperature all need to be evaluated.

The better strategy is:

Design the site as a water system first, and then determine where reuse is technically and economically appropriate.

What a Co-Located Greenhouse and Data Centre Could Look Like

Imagine a development with several interconnected systems.

The result is not simply a greenhouse beside a data centre.

It becomes a thermal-energy ecosystem.

ONE FACILITY’S WASTE STREAM CAN BECOME ANOTHER FACILITY’S INPUT.

Location Becomes Part of the Energy Strategy

For decades, greenhouse site selection has primarily considered factors such as:

• sunlight;
• climate;
• land;
• labour;
• water;
• transportation;
• markets; and
• utility access.

Future greenhouse development may need to consider another question:

What industries are nearby?

A greenhouse located near a:

• data centre;
• industrial plant;
• wastewater-treatment facility;
• power-generation facility;
• food processor;
• biomass plant; or
• district-energy system

may have access to energy or material streams that would otherwise be wasted.

This changes how we think about site selection.

Instead of treating every greenhouse as an isolated building, developers can begin looking for clusters where one operation’s outputs become another operation’s inputs.

The Greenhouse Must Be Designed Around the Heat Source

This is especially important.

Adding waste heat after a greenhouse has already been designed is much harder than planning for it from the beginning.

The greenhouse heating strategy influences:

• pipe sizing;
• water temperatures;
• heat-exchanger capacity;
• heat-pump selection;
• thermal storage;
• greenhouse envelope;
• crop selection;
• environmental control;
• supplemental heating;
• electrical capacity; and
• automation.

The available data-centre heat profile also needs to be understood.

How much heat is available?

At what temperature?

Is it available continuously?

Will the data centre operate at full load immediately?

How would changes in computing demand affect heat availability?

The system must also account for periods when the greenhouse does not need heat.

And during a -30°C winter night, what happens when greenhouse demand exceeds recovered heat?

These are engineering and operational questions—not marketing questions.

What Should Be Evaluated Before Co-Locating?

A serious feasibility study should evaluate several systems together.

1. Heat Availability

Determine the amount, temperature and seasonal profile of recoverable heat.

2. Greenhouse Heating Demand

Model hourly greenhouse heat demand rather than relying only on annual averages.

3. Distance

Determine the capital and thermal cost of transporting heat between facilities.

4. Heat-Pump Requirements

Evaluate whether the recovered temperature can be used directly or needs upgrading.

5. Thermal Storage

Determine whether storage can reduce mismatches between heat production and greenhouse demand.

6. Backup Heating

A commercial greenhouse cannot depend entirely on a system with no redundancy.

7. Electricity

Understand available electrical capacity and future expansion requirements.

8. Water

Evaluate availability, quality, treatment and reuse opportunities.

9. CO₂

Identify whether a legitimate, clean and economically viable CO₂ source exists nearby.

10. Crop Strategy

Different crops and production strategies produce different energy profiles.

11. Economics

Compare the total cost of recovered heat with alternative heating systems over the life of the project.

12. Governance

Determine who owns, operates and maintains the shared infrastructure.

That last question is easy to underestimate.

If the data centre goes offline, who supplies greenhouse heat?

If a shared pipe fails, who repairs it?

Who pays for the heat pump?

The agreement must also establish ownership of the thermal storage.

Finally, who guarantees heat availability?

Successful industrial symbiosis depends as much on commercial agreements and operations as it does on engineering.

From Waste Stream to Productive Infrastructure

Data centres are going to require increasingly significant energy infrastructure.

Greenhouses are also becoming more technologically intensive.

The opportunity is to stop planning these systems entirely in isolation.

A data centre cannot solve every greenhouse energy problem.

And a greenhouse is not automatically the best destination for every megawatt of rejected heat.

But where the climate, location, temperature, infrastructure and economics align, data centre waste heat can become a valuable greenhouse energy resource.

Canada’s climate may make that relationship particularly interesting.

Instead of rejecting heat while another facility burns fuel to create it, future infrastructure projects can ask a different question:

Can we connect the two?

That is where greenhouse energy efficiency starts moving beyond individual equipment.

It becomes a question of how communities, industries and infrastructure are designed together.

The next generation of greenhouse efficiency may not come from the greenhouse alone. It may come from designing the industries around it to work together.

Planning a Greenhouse Around Future Energy Infrastructure?

Successful co-location needs to begin long before construction.

NuLeaf Farms works with developers, growers, communities and institutions to evaluate greenhouse feasibility, infrastructure requirements, environmental systems, automation and long-term operational performance. Its project services cover planning through construction, commissioning and operational optimization.

When alternative energy systems such as waste-heat recovery are involved, greenhouse design, controls and production strategy need to be developed around the available infrastructure rather than added afterward.

Explore:

• Greenhouse and Indoor Farm Services
• Greenhouse Automation – The Leaf
• Farm Management Software – The Root
• Contact NuLeaf Farms