The grow-light of 210 µmol/m2 at Rotherdale Farm exemplifies a hybrid lighting strategy; the light recipe consists of both SON-T and compact LED toplights, in addition to utilizing an LED interlighting strategy. Underneath the diffused glass sits another division. One half of the tomato plants are cultivated on substrate and the other half are grown hydroponically, unique for tomatoes. In addition to lighting, Certhon has supplied, constructed and installed the entire greenhouse complex (which includes heating, water and electrical engineering). Finally, for this innovative project, Certhon engineered a 5,000 m3 hot water buffer tank and integrated three CHP’s into the heating system.