(open market + managed) ( GAS – SALES u. m. 2018 2019 2020 ∆% 2020/2019 gas sold by Acea Energia in Italy (35) MSm3 128.29 139.75 165.19 18.2 Acea Energia MSm3 98.17 108.38 139.89 29.1 other associated companies MSm3 30.12 31.37 25.30 -19.4 PUBLIC LIGHTING u. m. 2018 2019 2020 ∆% 2020/2019 luminous flux to Rome (36) Mlumen 2,010 2,002 2,010 0.4 CONTROLS AND MEASUREMENTS u. m. 2018 2019 2020 ∆% 2020/2019 measurement and control activity (37) no.