For companies with an intensive but efficient cultivation method, the MPS-OEX, which in Dutch stands for “Oppervlakte Efficiency Index” (Area Efficiency Index), allows broader company standards for fertiliser and energy usage. Whether a participant is eligible for broadening of these standards is determined on the basis of factors that increase growth and production (such as the type of lighting, the amount of CO2 and the use of substrate). MPS-OEX applies only to greenhouse cultivation.