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© 2026 Lettermark Partners Limited in partnership with the BUILD IN LONDON (NATIONAL)
TRUST, a registered social enterprise in England and Wales (No. 17088725).

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SmartestEnergy

ScaleupClimateBritish

Independent B2B energy supplier and trader that buys, sells and trades renewable power for businesses and independent generators.

Locations

London, United Kingdom (Headquarters)

The Columbus Building, 7 Westferry Circus, London, Greater London, E14 4HD, United Kingdom

Founded

2001

Team size

200+

Primary sector

Climate

Location

The Columbus Building, 7 Westferry Circus, London, Greater London, E14 4HD, United Kingdom

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SmartestEnergy London Office - Build in London