Table 4: Monthly heating and cooling consumption (kWh) for soil-less tomato cultivated in PV and glass greenhouse located in Rome, with the difference (kWh) and the saving (variation percentage).

ROME Greenhouse PV greenhouse Difference Variation Month Heating Cooling Heating Cooling Heating Cooling Heating Cooling% January 15774 0 13918 0 1856 0 11.77 0.00 February 8519 0 7755 0 765 0 8.98 0.00 March 2211 0 1723 0 488 0 22.06 0.00 April 179 13443 51 2904 128 10539 71.56 78.40 May 0 37213 0 20247 0 16966 0.00 45.59 June 0 58891 0 39235 0 19655 0.00 33.38 July 0 83357 0 57570 0 25787 0.00 30.94 August 0 70657 0 44271 0 26386 0.00 37.34 September 0 33263 0 14270 0 18993 0.00 57.10 October 14 8680 3 762 12 7918 81.17 91.22 November 3248 0 2581 0 667 0 20.53 0.00 December 11048 0 9891 0 1158 0 10.48 0.00