Smartest Energy Business Energy: Prices, Tariffs, Rates, Reviews & Contact
Compare Smartest Energy Business Electricity & Gas Rates, Tariffs, Reviews and Out-of-Contract & Deemed Prices and more...
Who are Smartest Energy?
Smartest Energy is a leading UK business energy supplier specialising exclusively in 100% renewable electricity. Founded in 2001, the company began as an aggregator for independent renewable generators and has since grown into one of the UK’s most established renewable-focused suppliers.
Today, Smartest Energy supports hundreds of independent renewable energy producers and supplies electricity to SMEs, large commercial organisations and public sector bodies across the UK. The business is owned by Marubeni Corporation, providing the financial strength and global backing of a major international energy and trading group. Smartest Energy operates from offices in London, Ipswich, Worthing and Manchester.
Smartest Energy is well known for its strong commitment to sustainability and the transition to net zero. Business customers benefit from access to smart metering, advanced energy data and tools such as its Web Analyser service, helping organisations better understand consumption and identify opportunities to improve efficiency.
The supplier offers tailored business electricity contracts, including fixed, budget and tendered solutions, designed to help organisations manage costs while sourcing renewable energy as standard. Following its rebrand in 2023, Smartest Energy continues to position itself as a specialist renewable supplier, supporting UK businesses in reducing carbon impact while maintaining reliable, competitively priced energy supply.
Compare Smartest Energy business energy tariffs and see how much your business could save today...
Why Businesses Choose Smartest Energy for Their Business Energy
Businesses choose Smartest Energy for its specialist focus on 100% renewable electricity, combined with the scale and stability needed to support organisations of all sizes. As a supplier dedicated exclusively to renewables, Smartest Energy appeals to businesses that want to reduce carbon impact without relying on offsets or complex add-ons.
Many organisations value Smartest Energy’s strong links to independent renewable generators, helping support the UK’s clean energy market while maintaining reliable supply. Its approach is particularly attractive to SMEs, larger commercial users and public sector bodies seeking transparent, sustainability-led energy procurement.
Backed by the global Marubeni Corporation, Smartest Energy offers financial strength, competitive tendered pricing and tailored contract structures. Combined with advanced energy data tools and customer-focused service, this makes Smartest Energy a popular choice for businesses looking to align commercial energy supply with long-term environmental goals.
Smartest Energy Business Energy Tariffs
Smartest Energy offers three core business energy tariffs for small and medium-sized enterprises, designed to provide clear pricing structures, renewable options and alternatives to traditional standing charge models. These tariffs are available across electricity and, where applicable, gas, with contract lengths ranging from 1 to 5 years.
Businesses can choose between fixing against wholesale market movements, opting for renewable-backed electricity, or removing daily standing charges altogether. Each tariff is designed to suit different usage patterns, budgeting preferences and sustainability goals, while maintaining predictable contract terms.
The three Smartest Energy SME tariffs are:
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SmartFix Renewable – fixed wholesale pricing with renewable electricity
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SmartFix Standard – fixed wholesale pricing for electricity and/or gas
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SmartZero – zero standing charge electricity with zero-carbon energy
Important: SmartZero tariffs do not include a daily standing charge. Instead, fixed and industry costs are recovered through the unit rate, meaning unit prices may be higher than standard tariffs. Suitability will therefore depend on your business’s energy usage profile.
This range of options makes Smartest Energy a strong choice for SMEs looking for flexibility in how energy costs are structured, whether prioritising budget certainty, renewable supply or minimising fixed daily charges.
If you’re unsure which Smartest Energy tariff best suits your business, comparing current options through WeSave can help identify the most cost-effective solution based on your usage and priorities.
Compare Smartest Energy business energy tariffs and see how much your business could save today...
Smartest Energy Out of Contract & Deemed Rates
Businesses on out-of-contract or deemed rates often pay significantly more for their energy, as no active supply agreement is in place.
These temporary tariffs offer no price certainty and can increase quickly. Reviewing your current rates and switching to a fixed-term energy contract can help lower costs and give your business greater control over future pricing.
If no contract is agreed, businesses supplied by Smartest Energy Business will automatically be placed on deemed or out-of-contract tariffs, which are typically far higher than standard fixed rates.
Businesses moving into premises already supplied by Smartest Energy Business will also default to these rates unless a new agreement is arranged. Securing a fixed contract early can result in substantially lower energy costs.
You should avoid staying on these rates any longer than necessary.
Smartest Energy
Out of Contract Rates
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Smartest Energy
Deemed Contract Rates
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Compare Smartest Energy business energy tariffs and see how much your business could save today...
Smartest Energy Business Energy Fuel Mix
The Fuel Mix Disclosure refers to the blend of fuels Scottish Power Business Energy use to generate electricity supplied to their customers, along with its environmental impact.
The table shows the Smartest Energy Business fuel mix from 1st April 2024 to 31st March 2025.
Nuclear
Renewables
Natural Gas
Coal
Other
The below confirms their annual Fuel Mix Disclosure (FMD):
Smartest Energy Business Energy Reviews
Our partnerships are with a trusted panel of suppliers who prioritise service and competitive rates.
Smartest Energy have an overall ‘Great’ reputation on Trustpilot, where it has an overall rating of 4.2 stars, based on almost 3,000 reviews. Of these, 68% are Excellent, 8% are Great, 2% are Average, 1% are Poor, and 21% are rated Bad. The firm is noted for its green energy initiatives and dedication to helping businesses achieve net-zero targets. Its tariff options, such as the fixed-rate “Smart Fix” and market-reviewed “Smart Tracker,” offer flexibility and sustainability to small and large businesses alike.
With WeSave, we can deal directly with Smartest Energy on your behalf, for the duration of your contract
Smartest Energy Business Energy Summary of Features
Smartest Energy offers a range of practical features designed to support UK businesses looking for competitive pricing, renewable options and greater visibility over energy usage. Its services focus on flexibility, transparency and data-led energy management.
Business customers can access renewable electricity tariffs, alongside standard business electricity and business gas contracts, with fixed wholesale pricing options available across contract terms ranging from 1 to 5 years. This allows businesses to balance budget certainty with longer-term planning.
Smartest Energy also supports alternative pricing structures, including tariffs with no daily standing charge, helping businesses align costs more closely with actual usage patterns. For organisations with more complex requirements, tailored pricing through tendered procurement is also available.
Energy monitoring and insight form a key part of Smartest Energy’s proposition. Businesses can benefit from smart metering and access to its Web Analyser service, providing greater visibility of consumption and helping identify opportunities to improve efficiency.
Flexible payment options, including budget-style plans, further support cashflow management and predictable monthly outgoings. Together, these features make Smartest Energy a strong option for businesses seeking reliable supply, renewable choices and smarter control over energy costs.
Contact Details for Smartest Energy Business Energy
When you switch through WeSave, we’ll handle all interactions with your new supplier, so you can stay focused on running your business. However, if you ever need to reach Smartest Energy Business directly, use the contact details above.
For additional information, visit their Contact Us page.
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Smartest Energy Business Energy Frequently Asked Questions
Businesses comparing Smartest Energy Business often have similar questions around tariffs, contract types, renewal timing and what happens if a contract ends. The FAQs below cover some of the most common points businesses ask about when reviewing Smartest Energy Business, including gas and electricity supply, deemed and out-of-contract rates, renewable options and switching support.
If you’re unsure which tariff is right for your business or when to review your current contract, these answers should help clarify how Smartest Energy Business works and what to consider before making a decision.
Smartest Energy is well suited to small and medium-sized businesses, larger commercial organisations and public sector bodies that want access to renewable electricity, flexible tariff structures and detailed energy usage insights.
Smartest Energy offers three core SME tariffs: SmartFix Standard, SmartFix Renewable and SmartZero. These provide options for fixed wholesale pricing, renewable-backed electricity and zero standing charge electricity, depending on business needs.
Smartest Energy supplies business electricity, with gas available on selected tariffs such as SmartFix Standard. Not all tariffs are available for both fuels, so suitability depends on the tariff chosen and site requirements.
SmartFix tariffs fix the wholesale energy element for the contract term, helping protect against wholesale market movements. As with most business energy contracts, other charges may still apply, depending on the tariff structure.
SmartZero is a zero standing charge electricity tariff, meaning there is no daily fixed charge. Instead, costs are recovered through the unit rate, which may be higher than standard tariffs. This option is often suitable for lower-usage or intermittently occupied sites.
Yes. Smartest Energy offers renewable-backed electricity options, including SmartFix Renewable, allowing businesses to source electricity from renewable generation while maintaining predictable pricing.
If no new agreement is arranged before your contract end date, your supply may move onto deemed or out-of-contract rates, which are typically more expensive and offer no price certainty. Reviewing your contract early can help avoid higher costs.
Yes. Smartest Energy supports smart metering where available and provides access to tools such as its Web Analyser, helping businesses monitor consumption, understand usage patterns and identify efficiency opportunities.
Yes. When you switch or renew Smartest Energy through WeSave, we manage pricing, negotiations and supplier communication on your behalf, helping ensure you’re on the most suitable tariff and avoid expensive rollover rates.
Compare Smartest Energy Business Energy Prices
Smartest Energy Business is part of the WeSave panel of trusted UK energy providers, meaning you can switch your business energy with confidence through us.
Finding the best business energy deals can be time-consuming and stressful. WeSave is an energy broker that you can trust. We do all the hard work for you to find a cheaper deal that’s tailored for your business and make switching simple.
Finding the best business energy deals can be time-consuming and stressful. WeSave is an energy broker that you can trust. We do all the hard work for you to find a cheaper deal that’s tailored for your business and make switching simple.
Why switch through WeSave?
With independent, expert advice at every step, you can be confident you’re getting exactly the right deal at the right time. Our strong relationships with suppliers and increased buying power allow us to negotiate the best rates available, including 1, 2 and 3 year fixed-rate options allowing you to lock-in lower prices. We’ll always make sure you know exactly how much you’ll be paying, with absolutely no hidden fees or nasty surprises. We’ll help you chose the right deal, switch supplier and provide dedicated ongoing support, with bill analysis, supplier liaison and advice when it’s time to renew.
Switching is easy with WeSave – simply request a quote on our website, give our switching team a call on 01872 495 111, email us at hello@wesave.co.uk or visit our contact page.
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