A French photovoltaic greenhouse generates 3.1 GWh and 4 tonnes/hectare of asparagus in one year

The solar greenhouse was built by the French developer Tenergie in 2017 and is enjoying remarkable performance in both agriculture and solar.

In April 2017, the French renewable energy developer Tenergie commissioned its first photovoltaic greenhouse based on its own Tenairlux technology, in Mallemort, in the Bouches-du-Rhône, in the south of France.

The plant was built with 265 W panels and has an installed capacity of 2.1 MW.

Five years after the commissioning of this 33,000 m² greenhouse, our results are positive, with a yield of four tonnes/hectare for this first year of cultivation of green asparagus from Provence, after a period of diversified cultivation which includes courgettes , turnips and sweet potatoes during the first three years and a production of 3.1 GWh of green electricity, equivalent to the consumption of 700 households, excluding heating.

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By 2022, the agricultural yield should increase to nine tonnes/hectare.

Since the beginning of this project, we have established the specifications with Laurent Chabert, horticulturist and manager of the Domaine Saint Vincent family cellar, so that your tool fully meets your expectations.

Efficient and innovative, thanks in particular to the installation of photovoltaic modules, this tailor-made solution notably allows better diffusion of light and better ventilation and a more homogeneous temperature.

Nicolas Jeuffrain, president of Tenergie.

Among the advantages of this greenhouse concept, the installation of photovoltaic modules makes it possible to reduce the shadow cast on the ground (36% against 52% in a conventional greenhouse).

The light is better exploited thanks to the use of filtering and diffusing polycarbonate, which improves the uniformity of the light on the ground.

Ventilation, based on a roof opening system, combined with a motorized side opening, controlled according to the interior climate and exterior climatic constraints, allows precise climate regulation.

On the one hand, for this first year of growing asparagus in the Tenairlux greenhouse, we are producing a particularly exceptional product quality.

On the other hand, thanks to its large volume and its very innovative design, the ventilation, lighting and temperature of the greenhouse are clearly optimized for better climate management, but also to save time and working conditions.

Laurent Chabert.

Tenergie wants to develop around thirty greenhouses of this type within three years. A dozen projects are currently under study.

The company is also working on other possible synergies with the agricultural world, particularly in projects related to methanisation.

To date, 75% of the solar farms operated by Tenergie are linked to the agricultural world, such as greenhouses or the renovation of the roofs of agricultural buildings.

In France, Tenergie owns and operates a fleet of more than 1,000 solar and wind power plants with an installed capacity of 615 MW.

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