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D-ENERGi Business Energy Review

Tom Reynolds

Written By:

Tom Reynolds

Business Energy Specialist

Laura Bennet

Reviewed By:

Laura Bennet

Home Energy & Sustainability Editor

3 fact checks verified
Prices verified Mar 2026
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D-ENERGi energy solutions company logo

D-ENERGi, based in Manchester, has been supplying gas and electricity to business customers since 2002. They focus entirely on business-to-business energy services and work with clients in education, hospitality, retail, and more.

Key Takeaways
  • Manchester-based since 2002 - D-ENERGi provides 20+ years exclusively B2B energy supply experience across UK business market
  • 15% below big supplier pricing - Competitive rates focus on SME market with straightforward contracts & transparent billing systems
  • Best for regional businesses - Strong northern England presence with personalised account management for companies requiring local supplier relationships
  • Limited online account features - Traditional service model lacks digital tools & apps offered by modern energy suppliers
  • Beats Utilita on contract flexibility - More varied contract terms & pricing structures than prepayment-focused competitors

Related Business Energy Guides

With a 4.4/5 Trustpilot rating from over 345 reviews, D-ENERGi generally enjoys positive feedback.

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With a 4.4/5 Trustpilot rating from over 345 reviews, D-ENERGi generally enjoys positive feedback. They describe themselves as an award-winning independent supplier, offering tailored solutions to help businesses cut energy costs.

Is D-ENERGi right for your business? Let’s take a closer look at their services, customer support, pricing, and what the switching process actually feels like. This review digs into real customer experiences and the factors that matter most when choosing an energy supplier for your company.

Overview of D-ENERGi

D-ENERGi set up shop in 2002 and now supplies gas and electricity to businesses across the UK.

D-ENERGi set up shop in 2002 and now supplies gas and electricity to businesses across the UK. They try to be a genuine alternative to the big-name energy providers, with a solid base in sectors like education, hospitality, and retail.

Company Background

D-ENERGi started out as an independent provider and has become one of the UK’s longer-standing business energy suppliers. Their main office is in Manchester.

Over two decades, they’ve picked up industry recognition and a few awards. They only work with business customers, not households, which means they can really focus on commercial energy needs.

D-ENERGi pitches itself as a real alternative to the traditional “big six” energy companies that have dominated the UK for years.

Business Energy Supplier Services

D-ENERGi supplies gas and electricity contracts to businesses all over the UK. They offer both fixed-rate and flexible contract options, depending on what your company needs.

Their main services include:

  • Gas and electricity supply contracts
  • Smart metering
  • Energy efficiency advice
  • Online account management

They design energy management solutions to help businesses keep a handle on usage and costs. Smart meters are a big part of what they offer.

D-ENERGi also gives advice on reducing energy consumption. Their online tools let customers keep track of their accounts and usage.

Customer Profile and Market Position

D-ENERGi works with a pretty wide variety of businesses. They have a strong presence in education, hospitality, and retail.

Over the years, they’ve built up a big customer base and, according to Trustpilot, have a solid reputation. They compete with both the big energy companies and other independents.

Their focus is on personalised service and competitive prices. D-ENERGi tries to stand out on reliability and customer support in a crowded market.

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Types of Business Energy Solutions Offered

D-ENERGi delivers a range of business energy solutions, covering both electricity and gas.

D-ENERGi delivers a range of business energy solutions, covering both electricity and gas. They offer different tariff structures to suit various commercial needs, including both traditional and renewable options.

Electricity and Gas Contracts

D-ENERGi supplies both gas and electricity to UK businesses, no matter the size. They handle dual fuel contracts, so companies can bundle everything with one provider.

They work with everyone from small independents to large operations. D-ENERGi has particular experience with care homes, schools, hospitality venues, manufacturers, and retailers.

They create contracts tailored to each business. The team talks with customers to understand their usage and then builds bespoke agreements.

Contract terms depend on your business size and energy needs. D-ENERGi supports clients throughout the contract to help manage bills.

Fixed and Flexible Tariffs

D-ENERGi offers both fixed and flexible tariffs. Fixed tariffs lock in prices for the contract period, which can help with budgeting.

Flexible tariffs let businesses take advantage of market dips. When wholesale prices drop, bills can go down too.

For larger businesses, D-ENERGi offers half-hourly electricity pricing. This can mean better rates for high-usage customers.

Tariff options include:

  • Fixed-rate contracts for price certainty
  • Flexible tariffs linked to market rates
  • Half-hourly tariffs for bigger businesses
  • Bespoke pricing for certain sectors

They aim to compete with the big suppliers on price. D-ENERGi wants to be a real alternative to the “Big Six.”

Green Energy and Sustainability Options

D-ENERGi supplies 100% renewable electricity for businesses that want to prioritise sustainability. Their green tariffs help companies shrink their carbon footprint.

These options line up with corporate sustainability goals. Businesses can show they’re making responsible choices with their energy.

D-ENERGi’s green offerings compete with other suppliers in the market. Companies can compare and pick what works best for their needs.

Green energy benefits:

  • 100% renewable electricity supply
  • Lower business carbon footprint
  • Supports sustainability objectives
  • Competitive green tariff pricing

Their sustainable options cover both gas and electricity. D-ENERGi helps businesses make the switch to cleaner energy without sacrificing service or value.

Customer Service Experience

Most D-ENERGi customers say they get good support from dedicated account managers.

Most D-ENERGi customers say they get good support from dedicated account managers. The company keeps communication clear and usually resolves issues quickly.

Support Channels and Accessibility

D-ENERGi assigns each business customer a dedicated account manager. If you have a query or problem, you speak directly to your rep.

They don’t work with domestic customers, which lets them focus on commercial support.

You can reach out to your account manager for billing questions, contract discussions, or general help. There’s also a support section on their website with resources.

Account managers handle everything from energy efficiency advice to contract renewals. Having one point of contact makes things simpler for businesses.

Account Management and Meter Readings

Each customer gets an account manager who keeps in touch and handles queries. People report that communication is smooth and efficient.

Account managers help with billing corrections and meter reading issues. One customer mentioned Jacob Lucas sorted out a billing problem quickly and professionally.

You can discuss contract renewals directly with your rep. Customers often get good rates at renewal and clear info about their options.

Account managers answer technical questions about energy efficiency as well as the usual account stuff. It’s a one-stop shop for most business needs.

Response Times and Resolution Effectiveness

D-ENERGi staff usually respond to queries within 24 hours. Customers like the quick replies from their account managers.

Kendall Marsden gets a lot of praise for always responding within a day and sorting things out efficiently. People say she follows up and resolves issues properly.

The team handles billing disputes and account corrections well. They work hard to keep customers happy when problems come up.

Account managers take on complex issues and keep things professional. They push to get things resolved, even when it involves several parties.

Billing, Payments, and Account Management

D-ENERGi sends monthly invoices by email, with 14-day payment terms.

D-ENERGi sends monthly invoices by email, with 14-day payment terms. They charge late fees if payments are overdue and can set up payment plans for businesses having a tough time. There’s a bit of a mixed bag when it comes to billing accuracy.

Energy Bills and Invoicing Accuracy

Invoices come monthly by email to the address you gave when you signed up. Bills are based on your MPAN details and actual meter readings.

You need to pay within 14 days. Standard terms mean payment by direct debit.

Some customers have had trouble with billing. One review mentioned it was hard to get hold of invoices and to correct mistakes when they’d been billed incorrectly.

How invoices are sent:

  • Email only
  • Monthly cycle
  • 14-day payment window

It’s wise to check your bills carefully and flag any issues as soon as you spot them.

Payment Options and Flexibility

D-ENERGi accepts several payment methods:

  • Direct debit (preferred)
  • Bank transfer (BACS)
  • Credit card

There are extra charges if you use something other than direct debit, though the company doesn’t spell out the costs upfront.

If your business is struggling, D-ENERGi can offer:

  • Affordable payment plans
  • Longer payment terms
  • Flexible arrangements during tough times

They have a dedicated payment helpline: 0800 781 7626, Monday to Friday, 8am to 5:30pm.

Handling Disputes and Final Bills

If you miss the 14-day payment window, D-ENERGi will add late fees. They don’t publish the exact amounts.

To switch suppliers, you need to give 28 days’ notice before your contract ends. You can’t switch if you have outstanding debts.

For billing disputes, you can contact D-ENERGi’s customer service team. They suggest Citizens Advice for independent help: 0808 223 1133.

Switching requirements:

  • 28 days written notice
  • No outstanding balance
  • Valid termination notice

If you’re struggling financially, you might also be able to access government support or charity grants, as well as D-ENERGi’s own payment plans.

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Customer Reviews and Industry Reputation

D-ENERGi has over 345 reviews on Trustpilot, averaging 4.4/5.

D-ENERGi has over 345 reviews on Trustpilot, averaging 4.4/5. About 85% rate them as excellent. Some customers have raised concerns about billing and service coordination, but positive feedback is much more common.

Analysis of Positive Feedback

Customer service is where D-ENERGi really shines. Lots of customers mention staff by name for being responsive and solving problems.

Kendall Marsden gets a special mention for always replying within 24 hours. One customer said they’d “never waited longer than 24 hours for her to reply” and found her service “efficient and reliable.”

Pricing is another strong point. One long-term customer said D-ENERGi “come out the best” after comparing four quotes over 15 years of renewals.

Staff like Lee Doran, Hena Ahmed, and Faline Welsh get frequent praise for finding competitive rates. One business cut their rates by 45% thanks to Lee.

Communication is also a plus. Customers like being able to talk to real people, not automated systems.

Management often responds to reviews and passes feedback to the right team members, which feels reassuring.

Common Complaints and Negative Trends

Billing issues are the most common complaint. Some customers say they received overestimated bills, even after submitting accurate readings online.

A charity reported getting an overestimated bill despite sending July readings on time. Tom Wareing sorted it out, but it shows there are some systemic problems.

Deemed rates have caused financial headaches for some. A few customers say they got accidentally locked into higher rates after their contract expired.

Coordination problems pop up in some reviews. One customer called the service “utterly unprofessional, uncoordinated and hopeless.”

Extra charges are another sticking point, with complaints about unexpected fees and “extortionate” rates.

On the positive side, management does reply to negative reviews and tries to investigate issues. Benjamin Richards-Jubb, the Customer Service Manager, often asks for details to help sort things out.

Comparisons With British Gas Lite and Other Suppliers

Switching experiences are mixed. One customer moved to British Gas Lite after a billing dispute over an empty property and later realised D-ENERGi owed them a significant refund.

Competitive position is generally strong, according to long-term customers. Many say they compared several quotes before sticking with D-ENERGi.

Price matching helps D-ENERGi stay competitive. Luke Burns gets a mention for matching a rival’s price while still providing good service.

The company seems more willing to negotiate and match prices than many big suppliers, but you’ll need to do your own research first.

Service quality stands out in direct comparisons. Customers who’ve switched back to D-ENERGi often mention better service and prices than with larger suppliers.

Switching Process and New Customer Onboarding

D-ENERGi makes switching fairly straightforward.

D-ENERGi makes switching fairly straightforward. The whole process usually takes about four weeks, with account managers handling the details and collecting meter info like MPAN numbers.

Process for Changing Suppliers

Switching to D-ENERGi is simple. First, fill out an online form for a free, no-obligation quote.

An account manager then gets in touch to discuss your energy needs. They offer tailored rates and handle all communication with your current supplier.

Switching at a glance:

  • Full switch takes four weeks
  • Notice period: up to 30 days before contract end
  • No outstanding debts with your old supplier

D-ENERGi manages the whole transition, working with your existing supplier to keep things smooth.

You can switch when your contract ends or if you’re on deemed rates. If you’re on a fixed-term contract, it’s usually best to wait until it finishes to avoid exit fees.

Required Documentation and Meter Details

D-ENERGi asks for a few key details to handle your energy switch. They’ll need your business postcode and who currently supplies your energy.

Essential Documentation:

  • Business postcode
  • Name of your current energy supplier
  • Details of your current business energy tariff
  • Annual energy consumption figures
  • A recent business energy bill

The MPAN (Meter Point Administration Number) points to your electricity meter location. With this number, D-ENERGi gets in touch with network operators and sorts the switch.

For gas, you’ll need the Meter Point Reference Number (MPRN). You’ll find both the MPAN and MPRN on your existing energy bills, so don’t worry about digging too deep.

These numbers make sure your supply gets managed accurately.

Support for New Business Customers

New customers at D-ENERGi get plenty of support throughout the onboarding process. Account managers guide you from the first quote to the final connection.

The support team keeps an eye on every switch to avoid delays. They’ll talk to your old supplier and handle the paperwork.

Customer Support Features:

  • Dedicated account managers
  • Phone support: 0800 781 7626
  • Calls usually answered within three rings
  • Email support is also on offer

D-ENERGi’s price matching team goes beyond matching quotes – they’ll try to beat them. That way, you’ve got a shot at a better rate than what you’re paying now.

If you’re moving premises, D-ENERGi can step in straight away. They’ll put your new site on deemed rates, which means you’ll want to pick a supplier quickly to keep costs under control.

8.0
/ 10
D-ENERGi
✓ B2B-focused independent supplier - all products tailored to commercial customers from day one ✓ Competitive fixed and flexible contract pricing, particularly for SMEs and mid-market ✓ Strong Trustpilot rating vs sector average - consistent customer satisfaction scores ✓ Transparent contract terms with clearly visible exit clause conditions ✗ Smaller supplier with limited market share vs Big Six - less infrastructure and brand backing ✗ Limited green energy credentials vs renewable-specialist competitors ✗ Digital self-service functionality behind major suppliers - most queries require direct contact ✗ Regional coverage gaps may affect availability for some business locations
Our Verdict

D-ENERGi Business Energy: How D-ENERGi helps UK businesses save with tailored gas and electricity solutions, trusted service. Our verdict inside.

Our Rating7.8/10
Pricing & Value25%
8.0
Green Credentials20%
6.0
Contract Flexibility20%
8.0
Customer Service15%
8.5
Expert Score15%
8.5
User Sentiment5%
8.5
Tom Reynolds

Tom Reynolds

Business Energy Specialist

Tom focuses on commercial energy, renewable adoption, and sustainability strategy for SMEs. His background with UK energy suppliers helps businesses cut costs while meeting carbon targets.

Laura Bennet

Reviewed by

Laura Bennet

Home Energy & Sustainability Editor

FAQs

What are the customer service hours for D-ENERGi?

You can ring D-ENERGi’s customer service on 0800 781 7626. They say they’ll answer in three rings, which is pretty quick.

There’s also an email option if you prefer typing. Oddly, they don’t actually list their operating hours anywhere public, so you might have to try your luck.

How does D-ENERGi’s pricing compare to other energy suppliers?

D-ENERGi claims to offer competitive rates for business energy across the UK. Their price matching service actually aims to beat your existing quote, not just match it.

Pricing comes down to unit rates per kilowatt-hour plus standing charges. What you pay depends on your meter type, where you are, how much you use, and your contract length.

There’s no price cap for business energy in the UK, so rates can move around more than domestic ones.

Can businesses of all sizes switch their energy supply to D-ENERGi?

D-ENERGi works with businesses of all shapes and sizes. Even small businesses can sign up, and you’ll see plenty of reviews from smaller firms.

To switch, you’ll need your postcode, current supplier, tariff name, annual consumption, and a recent energy bill. They keep it simple.

You can switch when your contract ends, or if you’ve just moved in and you’re on deemed rates.

What renewable energy options does D-ENERGi offer?

If you want to go green, D-ENERGi offers renewable sources like wind power. That’s handy if you’re chasing Net Zero targets.

Their renewable deals help you cut down your environmental impact without losing out on price. That fits with the Climate Change Levy, which pushes for energy efficiency.

If you run multiple sites, you can still opt for renewables and keep your costs and carbon in check.

Are there any exit fees associated with switching away from D-ENERGi?

You can give notice up to 30 days before your contract ends if you want to leave D-ENERGi. But, if you try to leave early, there could be termination fees.

When you can switch depends on your contract. It’s worth reading the fine print to avoid any unexpected charges.

Business energy contracts don’t come with a cooling-off period, unlike domestic ones, so once you sign, you’re committed.

What additional services does D-ENERGi provide apart from energy supply?

D-ENERGi installs smart meters for businesses, making it easier to track exactly how much energy you use. With these meters, you can finally say goodbye to those annoying estimated bills.

They assign a dedicated account manager to each client during the switch. This person sorts out all the communication with your old supplier, so you don’t have to chase anyone.

Their team keeps an eye on the energy market, looking for the best pricing trends. If you run several sites, they’ll pull together tailored quotes and stick around to support you as your needs change.

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