Current Fuel Mix Disclosure: 15% Coal, 75% Natural Gas, 4% Nuclear and 6% Other Fuel Sources.
CO2 Emissions: 475g per kWh – Radioactive Waste: 0.00027g per kWh
*Fuel mix disclosure as of October 2025
WE WORK WITH SMARTEST ENERGY AND 30 OTHER SUPPLIERS
Smartest Energy Head office address:
The Columbus Building
7 Westferry Circus
London
E14 4HD
Smartest Energy Company Number: 3994598
Smartest Energy VAT Number: GB773846584
Smartest Energy Company Information:
Established in 2000 Smartest Energy provides Gas and Electricity to Small and Medium Enterprises (SME’s) as well as to larger industrial and Commercial customers through both fixed and flexible contracts.
Smartest Energy - Frequently Asked Questions
What is Smartest Energy’s Address?
The Smartest Energy head office address is: The Columbus Building, 7 Westferry Circus, London, E14 4HD
What is Smartest Energy’s Company Number?
The Smartest Energy company number is 3994598
What is Smartest Energy’s VAT Number?
Smartest Energy’s VAT number is GB773846584
What is Smartest Energy’s Fuel Mix?
The current Smartest Energy Fuel Mix is 15% Coal, 75% Natural Gas, 4% Nuclear and 6% Other Fuel Sources.
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For more information
If you’d like to find out more about Smartest Energy or switching suppliers or if you’d simply like us to compare Smartest Energy prices for you as part of our no-obligation comparison service, phone us on
01273 914000
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