Table 5: Monthly heating and cooling consumption (kWh) for soil-less tomato cultivated in PV and glass greenhouse located in Ragusa, with the difference (kWh) and the saving (variation percentage).

RAGUSA Greenhouse PV greenhouse Difference Variation % Month Heating Cooling Heating Cooling Heating Cooling Heating Cooling January 577 0 517 0 60 0 10.33 0.00 February 149 0 111 0 38 0 25.47 0.00 March 164 7372 93 730 71 6643 43.23 90.10 April 0 18560 0 4821 0 13739 0.00 74.02 May 0 41945 0 24305 0 17641 0.00 42.06 June 0 60700 0 41294 0 19406 0.00 31.97 July 0 78880 0 54848 0 24032 0.00 30.47 August 0 72675 0 46982 0 25693 0.00 35.35 September 0 48951 0 25404 0 23547 0.00 48.10 October 0 20986 0 5563 0 15423 0.00 73.49 November 61 0 44 0 17 0 28.29 0.00 December 306 0 251 0 55 0 17.87 0.00