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How to contact E.ON business energy
E.ON, one of the Big Six energy suppliers, offers renewable-backed energy deals supported by their wind, solar, and biomass facilities. They provide supply tariffs and additional services to businesses of different sizes, with npower Business Solutions supporting large business energy customers and E.ON Next serving small business energy users.
We start our guide with the ways business customers can contact E.ON.
E.ON business energy contact number
If you’re an E.ON business energy customer, reaching the right support team depends on your specific service provider.
- E.ON Next business customers can call: 0808 501 5699
- npower Business Solutions customers can call: 0330 912 8100
E.ON business energy customer login
E.ON Next customers can log into their account on the website. The online account allows you to pay invoices, submit meter readings, change or renew tariffs, and add another fuel type to your account.
npower business customers can log in to their dashboard to view their balance, download recent invoices, check and submit meter readings, raise and track queries with specialist teams, access energy portfolio information, and manage contract details.
E.ON business energy email
For E.ON Next business customers, you can reach support via email at hellobusiness@eonnext.com.
For npower Business Solutions customers, queries can be submitted through an online contact
form for assistance.
E.ON business energy electricity rates
E.ON Next offers online fixed business electricity prices for small and micro businesses, which can be accessed directly via their website. npower Business Solutions does not publish fixed prices online and provides bespoke quotes for larger customers on request. Both brands publish their out-of-contract rates.
To receive quotes from E.ON alongside other trusted business energy suppliers, use our business electricity comparison service.
E.ON Next deemed and default electricity rates
The tables below show E.ON Next’s current out-of-contract electricity rates, effective from 1 April 2026.
| Profile Class | Standard variable standing charge (p/day) | Standard variable unit rate per kWh | Deemed standing charge range (p/day) | Deemed unit rate range per kWh |
|---|---|---|---|---|
| 01-04 Profiles | 300 | 36.5 - 41.1 | 300 | 36.5 - 41.1 |
Source: E.ON Next out of contract rates
npower Business Solutions deemed and default electricity rates
The tables below show npower Business Solutions’ current out-of-contract electricity rates, effective from 1 April 2026.
| Profile Class | Standard variable standing charge range (p/day) | Standard variable unit rate range per kWh | Deemed standing charge range (p/day) | Deemed unit rate range per kWh |
|---|---|---|---|---|
| 01-04 Profiles | 134.120 - 167.545 | 43.180 - 46.963 | 107.29 - 134.03 | 33.180 - 37.254 |
Source: nPower out of contract rates
Full rates, including for half-hourly electricity meters, are available on the E.ON and npower Business Solutions websites.
E.ON business energy gas prices
E.ON Next offers online fixed business gas prices for small and micro businesses via their website. npower Business Solutions does not publish fixed gas prices online and provides bespoke quotes for larger customers on request.
We can also help you compare business gas prices from E.ON and other trusted business gas suppliers.
E.ON Next deemed and default gas rates
The table below shows E.ON Next’s current out-of-contract gas rates, effective from 1 April 2026.
| Satndard Variable Standing Charge (p/day) | Standard Variable Unit rate per kWh | Deemed standing charge (p/day) | Deemed unit rate per kWh |
|---|---|---|---|
| 175 | 11.8 - 12.6 | 175 | 11.8 - 12.6 |
Source: E.ON Next out of contract rates
npower Business Solutions deemed and default gas rates
The table below shows npower Business Solutions’ current out-of-contract gas rates, effective from 1 April 2026.
| Satndard Variable Standing Charge (p/day) | Standard Variable Unit rate per kWh | Deemed standing charge (p/day) | Deemed unit rate per kWh |
|---|---|---|---|
| 136.7 | 18.391 | 136.7 | 13.391 |
Source: nPower out of contract rates
E.ON business energy tariffs
In this section, we summarise the business energy tariff types offered by E.ON. Smaller businesses consuming up to 100,000 kWh of electricity or 293,000 kWh of gas per year are supplied by E.ON Next, while larger businesses above these thresholds are served by npower Business Solutions.
Fixed price tariff
E.ON Next offers fixed-price electricity and gas contracts for small and micro businesses, with unit rates and standing charges locked in for the term of the contract. One to three-year terms are available. Larger businesses can access fixed contracts through npower Business Solutions, with terms of up to five years.
Variable tariff
E.ON Next offers a variable tariff for smaller businesses that prefer flexibility over price certainty. Rates move in line with wholesale electricity market conditions and there is no fixed end date, meaning businesses can switch at any time without exit fees. Variable pricing for larger businesses is available through npower Business Solutions on a bespoke basis.
Pass-through tariff
npower Business Solutions offers fixed contracts with pass-through options, allowing larger businesses to fix their commodity price while choosing how non-commodity charges such as TNUoS, DUoS, and environmental levies are paid. Charges can be fixed upfront or passed through as determined annually by Ofgem.
Flexible purchasing
npower Business Solutions offers flexible energy contracts for larger businesses seeking direct exposure to wholesale markets. Energy can be purchased in stages across the contract term, with a flex portfolio option also available for businesses requiring index-based pricing structures.
Renewable electricity
All non-half-hourly fixed business electricity contracts from E.ON Next are backed by Renewable Energy Guarantees of Origin as standard. npower Business Solutions also offers renewable electricity options, including REGO-backed supply, for larger businesses with carbon reduction objectives.
E.ON business energy contract features
Our business energy experts have reviewed the E.ON Next business energy terms and conditions and summarised the key points below. npower Business Solutions contract terms are typically provided on a bespoke basis.
Payment methods
E.ON Next provides various payment options, including direct debit, automatic payments, and flexible alternatives. Specific tariffs may require direct debit as the primary payment method. npower Business Solutions agrees payment terms directly with larger customers, tailored to their consumption profile and contract type.
End of contract
When your E.ON Next contract nears its end, you will be notified of renewal options in advance. If no new tariff is selected, you will move on to variable rates, which are generally higher. npower Business Solutions customers roll on to default rates at contract end, so it is important to review your business energy contract ahead of expiry.
Credit checks
E.ON Next may conduct credit checks when initiating or renewing a contract, with payment terms set accordingly. A security deposit may be requested based on your credit assessment and is refundable at contract end, minus any outstanding balance. npower Business Solutions assesses creditworthiness for larger contracts on a bespoke basis.
Energy management tools
E.ON Next provides an online portal for account management, usage tracking, and business energy monitoring. npower Business Solutions offers a dedicated online dashboard alongside account management support, giving larger customers real-time access to consumption data and invoice information.
Smart metering
Both E.ON brands support smart meter and AMR meter installation to improve billing accuracy and support business energy consumption tracking. E.ON Next customers without a smart meter may be required to have one fitted unless they opt out, subject to contract terms.
E.ON business energy customer reviews
E.ON Next has a current Trustpilot score of 4.5 out of 5, based on over 170,000 reviews, reflecting a high level of customer satisfaction. This score covers both domestic and business customers.
npower Business Solutions does not have a separate public review profile, as it operates as a bespoke service for larger businesses and does not invite public reviews in the same way.
Based on available business customer feedback, here is a summary of the common themes:
Pros for business
- Transparent billing: Businesses appreciate the clarity and accuracy of their energy invoices.
- Flexible tariff options: Many businesses like the range of tariff options, including flexible and fixed rates, which can help with budgeting and planning.
- Easy-to-use online tools: The online account management system receives positive feedback for being straightforward and practical, particularly for managing payments and meter readings.
Cons for business
- Customer support delays: Some reviews mention delays in response times when reaching customer service, especially during peak periods.
- Issues with billing adjustments: A few businesses report challenges resolving billing errors efficiently, which can be frustrating.
- Lack of personalised support: Some businesses feel that more tailored, proactive advice could be offered, especially for companies with more complex energy needs.
E.ON business energy additional services
E.ON offers a range of additional services through both E.ON Next and npower Business Solutions, designed to help businesses manage energy use, reduce costs, and support national grid decarbonisation strategies.
Energy management
npower Business Solutions provides business energy efficiency services, including consumption monitoring, efficiency analysis, and specialist software tools to help businesses identify cost-saving opportunities. Its platform gives larger businesses in-depth insight into their energy consumption and supports decarbonisation planning.
Market access and risk management
npower Business Solutions operates a dedicated Optimisation Desk, providing real-time market intelligence and risk management support to help larger businesses manage their energy position. Its Risk Navigator platform gives customers 24/7 access to market data, position tracking, and bespoke analysis to support business energy procurement decisions.
Flexible portfolio management
npower Business Solutions offers Flex Portfolio Solutions for larger businesses seeking a sophisticated approach to wholesale energy trading. Businesses can choose to trade independently, delegate decisions to a portfolio manager, or take a hybrid approach, with support levels tailored to their expertise and internal resources.
Power Purchase Agreements
npower Business Solutions works with energy generators, including farmers, landowners, and businesses with on-site renewable assets, offering fixed and flexible contracts to help them sell energy to corporate customers via corporate power purchase agreements. Its Energy Generators platform supports the administration of generation assets in one place.
New connections
npower Business Solutions provides a fully managed new business electricity connection and new business gas connection service for larger businesses, with a team that has over 20 years of experience connecting commercial sites. The service includes working directly with the relevant distribution network operators, with power targeted for connection within five working days.
Net zero planning
npower Business Solutions offers a Net Zero Calculator that allows larger businesses to forecast their carbon emissions out to 2050 and model the impact of different technologies on their energy costs and environmental footprint. This is supported by sector-specific resources covering on-site generation, renewable funding, and decarbonisation strategy for industries including manufacturing, transport, and the public sector.
Solar, heat pumps and EV charging
E.ON Next offers commercial solar panel installation, battery storage, air source heat pump installation, and EV charging installation for business premises. These services can be combined with green business energy supply contracts and are supported by dedicated tariffs designed to reduce the cost of running low-carbon technologies.
District heating
E.ON is actively developing district heating networks across the UK, supplying heat from a central source to connected buildings via underground pipe networks. Projects include a pioneering development in Silvertown, east London, serving around 6,500 people. These networks are designed to provide low-carbon heat to large commercial and residential sites at scale.
E.ON business energy fuel mix
E.ON publishes an annual fuel mix disclosure showing how the electricity supplied to business customers is generated. As E.ON supplies business customers through two separate brands, the table below shows the fuel mix for both E.ON Next and npower Business Solutions.
| Fuel Mix | npower Business Solutions Fuel Mix | E.ON Next Renewable Products | UK Average |
|---|---|---|---|
| Coal | 9.7% | 10.2% | 5.9% |
| Natural Gas | 49.0% | 51.5% | 33.3% |
| Nuclear | 2.6% | 2.7% | 16.2% |
| Renewable | 34.6% | 31.3% | 42.1% |
| Other | 4.1% | 4.3% | 2.5% |
| Carbon Emissions CO2 g/kWh | 315 | 331 | 205 |
| Radioactive waste g/kWh | 0.0000 | 0.0002 | 0.0010 |