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Smartest Energy Reviews, Prices & Tariffs 

Smartest Energy is a dedicated energy supplier focused on small business energy in the UK. 

With very competitive prices, they are quickly gaining popularity with business owners and pride themselves on energy affordability, sustainability and online account management. Here’s an in-depth review to help you understand what they are like as a supplier and if they are the right choice before you compare prices.

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Is Smartest Energy a Good Energy Supplier? 

Smartest Energy is rated a ‘Great’ supplier with a score of 4.0 out of 5.0 on Trustpilot. Customers typically praise the customer service and knowledge of the market. 

They offer a range of renewable business electricity and competitively priced gas deals. Of course, in many cases this is subjective and each experience is unique, but Smartest Energy is a reliable supplier with great business energy deals.  

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Is Smartest Energy The Right Supplier For You?

We rate suppliers based on customers' most desired features including payment options, customer satisfaction, renewables and other factors. You can see this snapshot below. 


Service Offered

Online Billing


Direct Debit


Smart Meters


Mobile App


Flexible Payments


Renewable Energy


Paper Billing


Priority Register

Yes (opt-in)

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Smartest Energy Rates 2024 

Based on 25,000 kWh annual usage per fuel 



Unit Rate



*prices based on internal data in January 2024. The prices shown are from the cheapest unit rate available tariffs offered by Scottish Power from any region in the UK for a 2-year fixed. Prices shown include CCL, VAT & daily standing charges.


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Smartest Energy Tariffs

Tariff Name


Smart Fix - fix up to 5-years

  • Fix Smartest Energy prices for 1, 2, 3 and 5-years
  • 100% renewable energy 
  • Direct debit payment

Smart Tracker - 3-year fix

  • Fixed for the first 12 months and then annually reviewed 
  • Price match promise

Smart Pay - fix up to 3-years

  • Fixed pre-pay tariffs up to 3-years 
  • Pay only when you need energy 
  • Top-up online or phone
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