Voltiris completes successful bell pepper agronomy trial at Delphy Improvement Centre

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Voltiris has completed a successful agronomy trial at the Delphy Improvement Centre in the Netherlands, validating that greenhouse growers can reduce heat stress, improve fruit quality, and generate renewable electricity—all without compromising crop performance.

Cooler plants and a longer harvest

In a 250 m² compartment equipped with 48 Voltiris modules, ‘Alzamora’ bell peppers were grown under the same conditions as a reference compartment. Throughout the season, plant temperatures were 4°C lower during sunny periods, and greenhouse air cooled by about 2°C. These reductions allowed higher ventilation and screening setpoints, improving CO₂ retention and letting more light reach the crop.  

The Voltiris compartment produced more stable fruit weights, maintaining around 210 g per pepper well into mid-season. By contrast, the reference compartment saw fruit size decline sharply from week 26 onward. As a result, Voltiris delivered a 9% increase in class-I yield and a two-week extension of the harvest window.  

A validated solution for growers

This trial confirms the dual benefit of Voltiris: improved crop quality and significant energy production. It builds on the momentum of Voltiris’ first hectare-scale commercial installation at Meier Gemüse in 2025, where nearly 2,000 modules now operate daily in a tomato greenhouse. Growers looking to reduce energy dependence while strengthening crop performance now have a proven pathway—energy and crops, without compromise.

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