| 15121 | Italy | Relec Energia Srl. | Via Bellini, 93, 20099 Sesto San Giovanni (MI) | +39 02 84244984 | www.relecenergia.it | | |
| 15122 | Italy | Rem Tec Srl | Via Cremona, 62/O, 46041 Asola, Mantova | +39 376 261314 | www.remtec.energy | | |
| 15123 | Italy | Ren Electron s.r.l. | Via dell’Artigianato 2, Scala C, 20061, Carugate, MI | +39 02 92502993 | www.renelectron.com | Delta Energy Systems (Germany) GmbH | |
| 15124 | Italy | Ren Italia Srl | Via Uruguay, 26 Z. Ind. Sud 35127 - Padova | +39 049 8958280 | www.ren-italia.com | Fronius International GmbH, ABB Italy S.p.A. | |
| 15125 | Italy | Renco Group SpA | Strada del Montefeltro, 51, 61122, Pesaro (PU) | +39 721 43331 | renco.it/ | | |
| 15126 | Italy | RenEn S.R.L. | Piazza Mincio, 2, Roma | +39 06 94537100 | www.renen.com | | |
| 15127 | Italy | Renergia S.R.L. | Contrada Quintavalle, Zona Artigianale, 70044 Polignano a Mare, Bari | +39 080 4242363 | www.renergia.it | SunPower Corp. | SMA Solar Technology AG, SolarEdge Technologies, Ltd. |
| 15128 | Italy | Renergy Di Reale Ing.Flavio | Via Santorre di Santarosa, 13100 Vercelli VC | +39 0161 213822 | www.renergy-fv.it | SMA Solar Technology AG | K2 Systems GmbH |
| 15129 | Italy | Renerit Srl | Via tucidide 56, Milano | +39 0289763094 | www.renerit.com | | |
| 15130 | Italy | Renew s.a.s. | Via Zammariti, 49, 89048 Siderno (RC) | +39 392 9767899 | www.renewsas.com | | |
| 15131 | Italy | Renience | Via Nikolajewka, 18, 25015, Desenzano del Garda, Brescia | +39 030 9123517 | www.renience.com | | |
| 15132 | Italy | Renova Power Srl | via Alberto Caroncini 45, Rome | +39 06 36306351 | www.renovapower.com | | |
| 15133 | Italy | Renzoni Impianti Elettrici snc | Via Aurelio Saffi, 22, 61122 Pesaro (PU) | +39 072 1413216 | https://www.renzoniimpiantielettrici.com | | |
| 15134 | Italy | Renova Ergo Sum | Via Antonino Gramsci 73/C | +39 095 6785359 | www.renovaergosum.com | Western Co. Srl, SMA Solar Technology AG, Steca Elektronik GmbH, Fronius International GmbH, Sungrow Power Supply Co., Ltd., Kostal Solar Electric GmbH, SolarEdge Technologies, Ltd., Fimer S.p.A., SolaX Power Network Technology(Zhejiang) Co.,Ltd. | |
| 15135 | Italy | Reset Srl | Via Edoardo Ferravilla, 25, 42124 Reggio Emilia RE | +39 0522 926468 | www.resetspa.com | | |
| 15136 | Italy | Ressolar Srl | Via Carlo Serassi, 21, Bergamo, 24124 | +39 035 3692145 | www.ressolar.it | Solon International, Aleo Solar GmbH | SMA Solar Technology AG |
| 15137 | Italy | Restaurea | 10, Via Cappuccina, Mestre, 30172, Venezia, VE | +39 041 954085 | https://www.restaurea.org | | |
| 15138 | Italy | REVO Srl | Viale dell' Artigianato, 12, 36030 San Vito di Leguzzano, VI | +39 0445 1929996 | www.revosrl.it | | |
| 15139 | Italy | Rewal Snc | Via Leonardo da Vinci, 5/C, 37020 Arbizzano, VR | +39 045 7514944 | www.rewal.it | | |
| 15140 | Italy | Rewatt Srl. | Via dell'Innominato, 10 24053 Brignano Gera d'Adda (BG) | +39 0363 1925224 | www.rewatt.it | | |
| 15141 | Italy | Rexenergy Srl | Via del Mella, 13, 25131 Brescia BS | +39 800 913512 | www.rexenergy.it | SunPower Corp. | SolarEdge Technologies, Ltd. |
| 15142 | Italy | RG Srl | Via 4 Novembre, 251, 35030 Vo 'Euganeo - Pd | +39 049 9940357 | www.renatogottardo.it | | |
| 15143 | Italy | Ri-Costruire Srl | Via Roma, 45 35010 Limena, PD | +39 049 7359673 | www.ri-costruire.it | | |
| 15144 | Italy | Riesco Srl | Via Augusto Forti 18/A, 44027 Fiscaglia (FE) | +39 0532 209280 | www.riescosrl.it | | |
| 15145 | Italy | Righetti Tecnologie | Via Antonio Meucci, 9 - 37026 Pescantina (VR) | +39 45 6750121 | www.righettitecnologie.it | | |
| 15146 | Italy | Rinergy Ltd. | Via dei Bruzi, n°7, Montesilvano, (PE) | +39 085 2190482 | www.rinergy.it | | |
| 15147 | Italy | Rinnova Impianti Srl | Via Malta 25, 09124 Cagliari | +39 33 02880921 | www.rinnovasoluzioni.com | ABB Italy S.p.A. | |
| 15148 | Italy | Rinnovabile Maccabiani | Via Tutto Ghedi, 23, 25016 Ghedi BS | +39 030 9050455 | www.rinnovabilemaccabiani.it | Hanwha Q CELLS GmbH | SMA Solar Technology AG, Fronius International GmbH, Enphase Energy, Inc. |
| 15149 | Italy | Rinnovabili.biz | Via Pasubio 5, Dalmine (BG) | | www.rinnovabili.biz | | |
| 15150 | Italy | Risorse Solari | Via Piave 27, 21040 Lozza (VA) | +39 0332 264579 | www.risorsesolari.com | | |