| 28081 | United Kingdom | A.M.P.S. Electrical Services | Unit 5, Bojea Trading Estate, Bodmin Road, Trethowel, St Austell, Cornwall, PL25 5RJ | +44 1726 76800 | https://www.ampselectrical.co.uk | | |
| 28082 | United Kingdom | A&E Tech Ltd | 73 Bold Road, St Helens, Merseyside, WA9 4JG | +44 1744 555001 | www.ae-tech.uk | | |
| 28083 | United Kingdom | A&M Energy Solutions Ltd | Environmental House, Sandwash Close, Rainford, St Helens, Merseyside, WA11 8LY | +44 800 318867 | www.am-energy.com | | |
| 28084 | United Kingdom | A1 Solar UK Limited | 1 Church Croft Gardens, Rugeley, Staffordshire, WS15 2HT | +44 121 3609682 | www.a1solaruklimited.co.uk | ABB Italy S.p.A., SolaX Power Network Technology(Zhejiang) Co.,Ltd. | |
| 28085 | United Kingdom | AA Electrical Services | 166 Sevenoaks Way, Orpington BR5 3AE | +44 1689 811000 | www.aaelectricalservices.co.uk | | |
| 28086 | United Kingdom | AAC Mechanical & Electrical Ltd. | Unit 6, Mallow Park, Watchmead, Welwyn Garden City, Hertfordshire, AL7 1GX | +44 1707 325566 | www.aac.uk.net | | |
| 28087 | United Kingdom | Aaron Green Limited | 10 Newlands Road, St Helens, Merseyside, WA11 9AU | +44 1942 366289 | www.aarongreen.co.uk | | |
| 28088 | United Kingdom | AB Energy Centre Ltd | Unit 7, South Mill, Warwick Bridge, Carlisle, Cumbria, CA48RR | +44 1228 318900 | abenergycentre.co.uk | | |
| 28089 | United Kingdom | Abbey Electrics Ltd. | Unit 2, Warmair House, Green Lane, Northwood, HA6 2QB | +44 1923 829479 | abbeyelectrics.com/ | | |
| 28090 | United Kingdom | Abbey Roofing Services | | +44 1768 758573 | https://www.abbeyroofingcumbria.com | | |
| 28091 | United Kingdom | Abbey Solar Renewables | Rumbow House, Rumbow, Halesowen, B63 3HU | +44 1562 228177 | www.abbey-solar.com | SunPower Corp. | |
| 28092 | United Kingdom | ABCA Systems Ltd | Unit 24, Mylord Crescent, Camperdown Ind Est, Killingworth, Tyne & Wear, NE12 5UJ | +44 333 1210999 | www.abcasystems.co.uk | | |
| 28093 | United Kingdom | Abel Energy Ltd | Neaton Business Park, Norwich Road, Watton, Norfolk, IP25 6JB | +44 1953 884486 | www.abelenergy.co.uk | | |
| 28094 | United Kingdom | Aberdeen Solar Ltd. | 94 Collieston Circle, Bridge Of Don, Aberdeen, AB22 8UT | +44 800 6906772 | aberdeensolar.com | AU Optronics Corporation, LG Electronics, Inc., 8.33 Solar | SMA Solar Technology AG, Steca Elektronik GmbH, Enphase Energy, Inc., Fimer S.p.A. |
| 28095 | United Kingdom | Aberla Renewables | 4b Olympic Park, Olympic Way, Birchwood, Warrington WA2 0YL | +44 1925 875822 | www.aberla.co.uk | | |
| 28096 | United Kingdom | Ablaze Green Energy Solutions Limited | Farynor House, 1 Woodend Road, Deepcut, Surrey, GU16 6QH | +44 333 2205498 | www.ablazegreenenergy.co.uk | | SunPower Corp. |
| 28097 | United Kingdom | Able Skills Ltd. | Unit K5, Riverside Industrial Estate, Riverside Way, Dartford, Kent DA1 5BS | +44 808 1003245 | https://www.ableskills.co.uk | | |
| 28098 | United Kingdom | Abode Solar | Unit 1C, Station Road, Docking, Norfolk, PE31 8LT | +44 8546 343875 | abodesolar.com | | |
| 28099 | United Kingdom | ABR Roofing Service Ltd | 640 Merry St, Motherwell, Lanarkshire, Central Scotland, ML1 4BP | +44 1698 265262 | www.abr-roofing.co.uk | | |
| 28100 | United Kingdom | Absolar Solutions | Future Worlds, University Accelerator Space, Building 1, University of Southampton, SO17 1BJ | +44 23 80592938 | https://ab.solar | | |
| 28101 | United Kingdom | Absolute Electrical Lincoln Ltd. | 3, Anderby Drive, Lincoln, LN6 0AH | +44 7927 312864 | https://www.absolute-elec.co.uk | | |
| 28102 | United Kingdom | Absolute Renewables Ltd | 141 Chase Side, Enfield, Middx, EN2 0PN | +44 800 8085866 | www.absoluterenewables.co.uk | | |
| 28103 | United Kingdom | Absolute Solar | Unit 20-21 Wanstead Road, Wanstead Park, Leicester, LE3 1TR | +44 800 1300250 | absolutesolar.co.uk | | |
| 28104 | United Kingdom | Absolute Solar & Wind Ltd | Arisaig Farm, Gartocharn, Loch Lomond and The Trossachs National Park, G83 8ND | +44 141 5307644 | www.absolutesolarandwind.co.uk | | |
| 28105 | United Kingdom | Absolute Solar Panels Ltd | 141 Chaseside, Enfield, Middx, North London EN2 0PN | +44 800 8085866 | www.absolutesolarpanels.co.uk | | |
| 28106 | United Kingdom | Absolute Solar Solutions | Jubilee Industrial Estate, Gorsey Lane, Coleshill, West Midlands, B46 1JU | +44 121 2683213 | www.absoluteroofingsolutions.co.uk | | |
| 28107 | United Kingdom | AC Electrical (EA) Ltd. | 43 Laburnum Close Bradwell, Grt. Yarmouth Norfolk NR31 8JB | +44 1493 603132 | https://www.acelectricalealtd.co.uk | | |
| 28108 | United Kingdom | AC Energy Solutions Limited | 214 Kings Road, Kingston Upon Thames, Surrey, England KT2 5HX | +44 800 9953838 | www.acenergysolutions.co.uk | | |
| 28109 | United Kingdom | AC Gold Electrical Services Ltd. | Unit 11, Back O Hill Road Industrial Estate, Stirling FK8 1SH | +44 1786 849099 | www.acgoldelectrical.co.uk | | |
| 28110 | United Kingdom | AC Roofing Services | Meadow View, Cackets Lane, Sevenoaks, Kent, TN14 7QG | +44 1959 534742 | www.acroofingservices.co.uk | | |