Ecotricity vs npower: comparing commercial tariffs and features to help you choose for your business

Ecotricity and npower Business Solutions both supply electricity and gas to British organisations, but they target different parts of the business energy market.

Ecotricity accepts enquiries from small and medium-sized enterprises as well as major companies. Its proposition centres on 100% renewable electricity, carbon-neutralised gas and using customer revenue to support new renewable generation.

npower Business Solutions, commonly abbreviated to nBS, concentrates on medium-to-large energy users. It offers fixed, flexible and hybrid procurement arrangements, multi-site management, wholesale-market purchasing tools and specialist services for companies with complex energy requirements.

For a small shop, office, café or workshop, Ecotricity is likely to be the only direct option of the two. For a manufacturer, logistics operator, large retailer or multi-site organisation consuming hundreds of thousands or millions of kilowatt-hours, both may be worth considering.

The better supplier will depend on the size of the company, its consumption profile, its approach to price risk and how important renewable sourcing is to its environmental strategy.

Ecotricity vs npower at a glance

Feature	Ecotricity Business	npower Business Solutions
Small-business energy quotes	Yes	No
Medium-sized business supply	Yes	Yes, subject to eligibility
Large-business supply	Yes	Yes
Business electricity	Yes	Yes
Business gas	Yes	Yes
Standard published contract rates	No, bespoke quote	No, bespoke quote
Fixed contracts	Yes	Up to five years
Flexible wholesale purchasing	Bespoke options for larger users	Extensive flex and hybrid products
Published flex threshold	No general threshold stated	Normally at least 1GWh per fuel annually
Renewable electricity	100% renewable electricity	Optional 100% UK renewable product
Standard electricity fuel mix	Renewable electricity	Standard products include fossil fuels
Time-matched renewable certificates	Real Time REGOs	Conventional UK REGO-backed products and CPPA options
Business gas environmental option	Carbon-neutralised gas	Carbon-offsetting options available
Multi-site management	Yes	Extensive multi-site and portfolio services
Online energy analytics	Account and reporting tools	Dashboard, My Energy Coach and Risk Navigator
On-site generation support	Yes	Yes
Power Purchase Agreements	Available, including for generation above 250kW	Generator PPAs and corporate PPAs
Best suited to	SMEs and companies prioritising renewable supply	Large users needing sophisticated procurement

What happened to the original npower business operation?

The name “npower” can create confusion because the former domestic and small-business supplier is no longer the relevant company for new business quotations.

Small-business npower customers were transferred to E.ON Next. The current npower Business Solutions website explicitly states that it does not provide energy for smaller businesses and cannot give them quotations.

The active large-business supplier trades as npower Business Solutions and supplies customers through Npower Commercial Gas Limited. This company continues to hold a non-domestic electricity supply licence.

The separate electricity supply licence held by Npower Limited was revoked with effect from 1 August 2025. This did not close npower Business Solutions because its commercial customers are supplied through the different licensed company.

For the purpose of this comparison:

• npower means npower Business Solutions;
• E.ON Next is the appropriate E.ON group brand for many smaller businesses; and
• Ecotricity can quote for both SMEs and large organisations.

Which businesses can apply?

Eligibility is one of the most important differences between these suppliers.

Ecotricity eligibility

Ecotricity defines an SME customer as a business meeting at least one of the following conditions:

• annual electricity consumption below 200,000kWh;
• annual gas consumption below 200,000kWh; or
• five or fewer meter points.

Larger organisations are directed to Ecotricity’s large-business service.

This means Ecotricity can potentially serve a wide range of organisations, including:

• independent shops;
• offices;
• cafés and restaurants;
• hotels;
• charities;
• workshops;
• schools;
• care providers;
• factories;
• retail chains; and
• national multi-site organisations.

npower Business Solutions eligibility

npower Business Solutions describes its target customer as a medium-to-large business with:

• ten or more employees;
• more than 100,000kWh of annual electricity consumption or 293,000kWh of annual gas consumption; and
• turnover above £2 million.

Its flexible procurement contracts are generally designed for companies consuming at least 1GWh, equivalent to 1,000,000kWh, of electricity or gas each year.

These criteria make npower more relevant to:

• factories and industrial plants;
• large warehouses;
• supermarket and retail portfolios;
• universities;
• hospitals;
• hotel groups;
• transport operators;
• data centres;
• property portfolios;
• public-sector organisations; and
• companies with numerous half-hourly meters.

Meeting the published profile does not guarantee that a quotation will be offered. Creditworthiness, meter type, site complexity, annual expenditure and contract requirements may also be considered.

Eligibility examples

Example company	Annual electricity	Annual gas	Likely position
Independent shop	15,000kWh	20,000kWh	Ecotricity
Medium office	80,000kWh	120,000kWh	Ecotricity; unlikely to fit npower’s target profile
Large restaurant	150,000kWh	350,000kWh	Potentially both, depending on turnover and employees
Hotel	400,000kWh	1,200,000kWh	Both
Manufacturer	2,500,000kWh	4,000,000kWh	Both; npower flex products become relevant
National retail chain	10,000,000kWh	2,000,000kWh	Both; npower has extensive portfolio tools

A company consuming between 100,000kWh and 200,000kWh of electricity may fall within Ecotricity’s SME definition while also meeting part of npower’s published large-business profile. Employee numbers and turnover would help determine whether npower is likely to quote.

Which supplier is cheaper?

Neither supplier publishes one contract rate that applies to every business.

Prices are normally calculated according to:

• annual electricity or gas consumption;
• MPAN or MPRN;
• meter type;
• half-hourly consumption data;
• electricity distribution region;
• agreed supply capacity;
• number of sites;
• contract start date;
• proposed contract length;
• wholesale purchasing strategy;
• payment method;
• credit risk;
• renewable product selection; and
• treatment of network and policy charges.

Ecotricity may provide a relatively straightforward fixed SME quotation. npower can offer anything from a conventional fixed agreement to a complex wholesale purchasing arrangement involving several trades over several years.

A headline unit rate therefore provides only part of the comparison.

The projected annual cost should be calculated as:

• Annual consumption × unit rate
• standing charges
• capacity charges
• metering and data costs
• network and policy charges
• environmental product premiums
• taxes
  − export income or contractual credits

Businesses should also check whether each cost is fixed or passed through at the prevailing industry rate.

How much does a rate difference matter?

Large consumers can save or lose substantial sums from apparently small unit-rate differences.

Annual consumption	Value of 0.5p/kWh	Value of 1p/kWh	Value of 3p/kWh	Value of 5p/kWh
50,000kWh	£250	£500	£1,500	£2,500
100,000kWh	£500	£1,000	£3,000	£5,000
250,000kWh	£1,250	£2,500	£7,500	£12,500
500,000kWh	£2,500	£5,000	£15,000	£25,000
1GWh	£5,000	£10,000	£30,000	£50,000
5GWh	£25,000	£50,000	£150,000	£250,000
10GWh	£50,000	£100,000	£300,000	£500,000

For a 10GWh electricity user, a difference of only 0.5p/kWh is worth £50,000 annually. This explains why large companies may employ energy procurement teams or use flexible trading services instead of simply accepting a fixed headline price.

Published deemed electricity rates

Deemed rates apply when a company occupies premises supplied by a provider without first agreeing a contract. They are generally more expensive than negotiated rates and should not be treated as representative quotations.

Both suppliers have published electricity deemed rates effective from 1 April 2026.

Non-half-hourly deemed rates

Charge category	Ecotricity	npower Business Solutions
Lowest published standard unit rate	23.80p/kWh for certain domestic-residual supplies	32.524p/kWh
No-residual unit rate	33p/kWh	Included within regional 32.524p–37.254p range
Commercial band unit rate	35p/kWh for bands 1–4	32.524p–37.254p/kWh
Band 1 standing charge	51.13p–77.87p per day	107.296p–134.036p per day
Band 2 standing charge	86.20p–135.96p per day	143.122p–192.882p per day
Band 3 standing charge	152.21p–250.10p per day	210.569p–308.459p per day
Band 4 standing charge	375.75p–645.99p per day	438.981p–709.221p per day
Non-residual standing charge	51.13p–77.87p per day	88.528p–110.308p per day

The exact rate depends on the distribution region, meter classification and residual charging band.

Ecotricity’s schedule excludes VAT, Climate Change Levy, government-imposed taxes and certain additional half-hourly metering or capacity costs.

npower’s published non-half-hourly charges include a range of network, metering and policy components, but exclude reactive-power charges, Climate Change Levy and any other items identified as exclusions in the applicable schedule.

Annual standing-charge comparison

Converting the published daily ranges into approximate annual costs gives the following figures.

Band	Ecotricity annual range	npower annual range
Band 1	£186.62–£284.23	£391.63–£489.23
Band 2	£314.63–£496.25	£522.40–£704.02
Band 3	£555.57–£912.87	£768.58–£1,125.88
Band 4	£1,371.49–£2,357.86	£1,602.28–£2,588.66

These figures do not prove that Ecotricity will provide the cheaper contract. They only compare published deemed standing charges for broad categories.

Illustrative deemed electricity costs

The following table compares consumption charges before standing charges and taxes.

Annual consumption	Ecotricity at 35p/kWh	npower at 32.524p/kWh	npower at 37.254p/kWh
100,000kWh	£35,000	£32,524	£37,254
250,000kWh	£87,500	£81,310	£93,135
500,000kWh	£175,000	£162,620	£186,270
1GWh	£350,000	£325,240	£372,540

At 1GWh, npower’s lowest regional non-half-hourly deemed unit rate would be £24,760 below Ecotricity’s 35p rate. Its highest rate would be £22,540 above it.

However, the comparison is not a substitute for contract quotes because:

• most 1GWh customers are likely to use half-hourly metering;
• deemed rates are intended for uncontracted supplies;
• each supplier includes and excludes different cost elements;
• meter categories may not correspond exactly; and
• negotiated large-business rates can be substantially different.

Half-hourly deemed pricing

npower publishes detailed half-hourly deemed rates by voltage, distribution region, time period and charging band.

For low-voltage half-hourly supplies from 1 April 2026, the published ranges include:

npower half-hourly charge	Published range
Night electricity	25.534p–28.355p/kWh
Non-business-day electricity	32.481p–36.404p/kWh
November–March business-day electricity	40.314p–44.305p/kWh
April–October business-day electricity	29.274p–32.782p/kWh
Capacity charge	3.820p–13.830p per day per kVA

The seasonal spread demonstrates how a high-consumption company’s operating pattern can affect costs. Electricity consumed during winter business days attracts a higher published deemed rate than overnight or summer usage.

Ecotricity’s deemed schedule generally applies a common unit rate within each relevant voltage or metering category, accompanied by region- and band-specific standing charges.

Large businesses should provide at least 12 months of half-hourly data when requesting quotations. Annual consumption alone cannot show whether a company uses most of its electricity during cheap or expensive settlement periods.

Ecotricity fixed business tariffs

Ecotricity provides individually quoted tariffs for SMEs and larger organisations.

Its SME proposition emphasises:

• a simple tariff;
• clear pricing;
• no hidden fees;
• 100% renewable electricity;
• carbon-neutralised gas; and
• support from a dedicated SME energy team.

Larger customers can discuss more complex arrangements, including renewable sourcing, generation and time-matched environmental reporting.

A company considering Ecotricity should ask whether its quotation fixes:

• the wholesale energy price;
• network charges;
• policy costs;
• transmission charges;
• distribution charges;
• metering costs;
• standing charges; and
• renewable certificate costs.

Ecotricity has said that increased TNUoS costs affecting businesses from April 2026 are being incorporated into a fixed daily rate for new contracts. This can improve budget predictability, although the complete quotation still needs to be reviewed.

npower fixed contracts

npower offers fixed electricity and gas contracts for periods of up to five years.

A fixed contract is intended to provide:

• a pre-agreed energy price;
• greater budget certainty;
• protection against some wholesale price increases;
• simpler internal forecasting; and
• less need for active market trading.

The company may still allow different approaches to non-commodity costs. A business might fix these costs, pass them through or use a combination, depending on the product.

This distinction is important because wholesale energy is only one part of the bill. The remainder may include:

• TNUoS;
• DUoS;
• BSUoS;
• Contracts for Difference;
• Renewables Obligation;
• Capacity Market charges;
• meter operation;
• data collection;
• data aggregation;
• transmission and distribution losses; and
• supplier operating costs.

A contract described as “fixed” does not necessarily guarantee that every invoice component will remain unchanged.

npower flexible contracts

npower’s major advantage for large organisations is its range of flexible purchasing options.

Instead of fixing the entire expected consumption volume on one day, a flexible customer can make several purchases over time. This may reduce the risk of fixing all energy when the wholesale market is unusually expensive.

For example, a business could purchase:

• 25% of forecast consumption when the contract is agreed;
• another 25% six months later;
• further volumes when market conditions meet agreed targets; and
• the remaining requirement closer to delivery.

The company may also leave some volume linked to day-ahead or other market indices.

Potential benefits include:

• spreading market timing risk;
• taking advantage of falling prices;
• creating different hedging strategies for different years;
• separating commodity and non-commodity decisions;
• adjusting purchasing as forecasts change; and
• accessing specialist market information.

Potential disadvantages include:

• exposure to price increases;
• greater contract complexity;
• internal governance requirements;
• the risk of poor trading decisions;
• volume forecasting errors; and
• less certainty over the final annual cost.

npower says its flexible products are suitable for companies consuming at least 1GWh of electricity or gas annually.

Fixed versus flexible example

Consider a manufacturer expecting to consume 5GWh of electricity annually.

Under a fixed approach, it might secure the entire expected volume at 20p/kWh for the commodity and agreed contract components.

The energy charge would be:

5,000,000kWh × £0.20 = £1,000,000

Under a staged purchasing strategy, it might secure four equal volumes at:

• 21p/kWh;
• 19p/kWh;
• 18p/kWh; and
• 22p/kWh.

The weighted average would still be 20p/kWh.

If the four trades were instead 21p, 18p, 17p and 19p, the average would fall to 18.75p/kWh, producing a £62,500 saving against 20p.

If they were 21p, 23p, 24p and 22p, the average would rise to 22.5p/kWh, adding £125,000.

Flexible procurement does not guarantee savings. Its principal purpose is to manage market timing and risk in a way that suits the organisation.

Comparing renewable electricity

Both suppliers can provide 100% renewable electricity, but it is not automatically included in every npower product.

Ecotricity renewable electricity

Ecotricity describes its business electricity as 100% renewable, with electricity sourced from renewable technologies such as:

• wind;
• solar; and
• hydroelectric generation.

The supplier also operates its “Bills into Mills” model, under which money generated from energy supply supports the development of additional renewable projects.

For a company seeking a simple environmental statement, Ecotricity’s proposition is relatively straightforward: its business electricity product is renewable rather than a conventional mixed-fuel product with a renewable upgrade.

npower UK Business Renewable

npower’s UK Business Renewable product matches the customer’s electricity use with Renewable Energy Guarantees of Origin from UK generation.

Its advertised benefits include:

• 100% UK renewable electricity;
• compatibility with fixed and flexible contracts;
• market-based Scope 2 zero-emission reporting;
• independent assurance;
• a renewable energy label for the customer; and
• compliance with relevant Greenhouse Gas Protocol guidance.

npower also lists UK Renewable Pure and UK Renewable Pure Plus products. Its fuel-mix disclosure says these use wind, solar and hydro asset types.

The renewable option must be selected. A customer on an ordinary npower product should not assume that its electricity is 100% renewable.

npower fuel mix

npower’s published product-specific fuel mix for 1 April 2024 to 31 March 2025 shows a substantial difference between its renewable and non-renewable products.

Source	Business Renewable product	All other products
Coal	0%	14.6%
Natural gas	0%	74.0%
Nuclear	0%	3.9%
Renewables	100%	1.3%
Other	0%	6.2%
Reported carbon emissions	0g/kWh	476g/kWh

The supplier-wide fuel mix under the Npower Commercial Gas Limited licence was reported as:

Source	Licence-wide mix
Coal	9.7%
Natural gas	49.0%
Nuclear	2.6%
Renewables	34.6%
Other	4.1%
Carbon emissions	315g/kWh

A company comparing quotations should establish which specific renewable product is included and whether its price contains the relevant REGO premium.

Time-matched renewable electricity

Ecotricity offers Real Time REGOs, which provide more detailed matching between consumption and renewable generation.

Traditional renewable electricity products normally match the total electricity consumed over a long reporting period with the equivalent number of certificates. This does not necessarily mean renewable electricity was generated during the same hour in which the business consumed power.

Time matching can show a closer relationship between:

• when the company used electricity; and
• when renewable generation entered the system.

Ecotricity’s options include monthly and hourly matching. This may be useful for organisations pursuing:

• 24/7 carbon-free energy objectives;
• detailed Scope 2 reporting;
• net-zero building standards;
• supply-chain environmental requirements; or
• independently audited sustainability claims.

npower’s conventional UK Business Renewable product is REGO-backed. For larger companies seeking a more direct link to named renewable projects, its Corporate Power Purchase Agreement and Renewable Match services may provide another route.

Comparing business gas

Both suppliers offer gas, but neither should be assumed to deliver entirely renewable physical gas through the national network.

Ecotricity describes its SME gas as carbon neutralised. Its wider environmental strategy includes developing green gas and funding carbon-removal activities.

npower allows customers to add carbon-offsetting options to gas purchasing arrangements.

Companies should distinguish between:

• fossil gas;
• biomethane or renewable gas;
• green gas certificates;
• carbon offsets;
• direct carbon removal; and
• emissions reductions achieved by using less gas.

Burning natural gas at company premises normally creates direct Scope 1 emissions. Certificates or offsets may address the reported environmental impact, but they do not prevent combustion emissions from occurring at the site.

A gas quotation should therefore identify:

• the physical fuel supplied;
• the offset or certificate standard;
• the volume covered;
• project location;
• additionality;
• verification arrangements; and
• whether the environmental claim covers all lifecycle emissions.

Power Purchase Agreements

Both Ecotricity and npower can support renewable generation and Power Purchase Agreements.

Ecotricity PPAs

Ecotricity says it can arrange a PPA where a business generates more than 250kW of renewable electricity on site.

A PPA can provide:

• a buyer for surplus generation;
• a defined export-price mechanism;
• longer-term revenue certainty;
• a route to market;
• treatment of renewable certificates; and
• support with settlement and administration.

Ecotricity can also combine supply agreements, PPAs and Real Time REGOs for larger corporate customers.

npower PPAs and Renewable Match

npower provides generation services for businesses that produce electricity and offers PPAs to help generators sell their output.

Its Renewable Match service can support a corporate PPA from the tender process through to integration with the company’s supply contract.

This may suit a large organisation that wants to:

• contract directly with a renewable generator;
• support construction of additional renewable capacity;
• improve energy traceability;
• obtain longer-term price certainty; or
• align procurement with corporate net-zero commitments.

CPPAs are normally more complex than standard renewable tariffs. Companies should assess:

• contract duration;
• minimum volume;
• generation technology;
• generation profile;
• sleeving fees;
• balancing costs;
• shape risk;
• volume tolerance;
• credit requirements;
• certificate ownership;
• change-of-law provisions; and
• termination liabilities.

A wind or solar generator will not produce the same quantity every half hour. The supply contract must cover the difference between generated output and the customer’s actual demand.

Multi-site management

npower has the more developed public proposition for complex multi-site portfolios.

Its services include:

• fixed, flex and hybrid supply;
• consolidated portfolio management;
• half-hourly consumption insights;
• online account access;
• market-position monitoring;
• consumption reporting;
• new meter connections;
• generator administration; and
• specialist procurement support.

Its My Energy Coach service is intended to help customers examine consumption and identify efficiency opportunities. Risk Navigator provides market information, position tracking and analysis for customers using flexible procurement.

Ecotricity can also supply multi-site organisations and major corporate customers. However, its public proposition places greater emphasis on renewable sourcing and environmental reporting than on wholesale trading infrastructure.

Metering and new connections

Metering can materially affect both the tariff and the quality of information available to the business.

Large organisations may require:

• half-hourly electricity meters;
• automated meter reading;
• meter operator contracts;
• data collection;
• data aggregation;
• capacity reviews;
• new electricity connections; or
• upgrades to support electric heating, vehicles or machinery.

npower promotes a managed new-connections service alongside its supply and portfolio products.

Ecotricity can also support commercial metering and supplies, but companies with highly complex new-connection programmes should compare the scope, timetable and charges in detail.

The energy supplier is not necessarily responsible for every element of a new connection. Distribution network operators, meter operators, electrical contractors and data agents may also be involved.

Contract risks to examine

Business energy contracts do not receive the same protections as standard domestic tariffs.

Companies are not protected by the domestic energy price cap, and there is generally no cooling-off period after a business contract has been accepted, including agreements made over the telephone.

Before signing with either supplier, check:

• start and end dates;
• unit rates;
• standing charges;
• fixed and pass-through components;
• renewable premiums;
• termination charges;
• volume-tolerance clauses;
• take-or-pay commitments;
• security deposits;
• credit requirements;
• meter charges;
• capacity charges;
• indexation;
• change-of-law provisions;
• renewal and termination windows;
• broker commission; and
• rates applied after expiry.

This review is particularly important for flexible contracts because the initial paperwork may set out a procurement framework rather than one final unit price.

Ecotricity advantages and disadvantages

npower advantages and disadvantages

Which supplier is better for different companies?

Type of company	Likely better fit	Reason
Independent shop	Ecotricity	npower does not quote smaller businesses
Small office	Ecotricity	Simple SME route and renewable electricity
Café or restaurant	Ecotricity	More accessible for lower consumption
Medium business using 150,000kWh	Compare eligibility	Ecotricity can quote; npower may quote if other size criteria are met
Large hotel	Compare both	Both can supply large gas and electricity loads
Manufacturer using more than 1GWh	npower may have an advantage	Flexible purchasing and risk tools
Company wanting a simple renewable contract	Ecotricity	Renewable electricity is the core supply proposition
Company wanting a renewable flex contract	npower	Renewable product can be combined with flexible purchasing
National multi-site retailer	npower may have an advantage	Extensive portfolio and data-management services
Business seeking hourly renewable matching	Ecotricity	Real Time REGOs provide time-matched reporting
Large corporate seeking a CPPA	Compare both	Both provide specialist renewable procurement
Renewable generator above 250kW	Compare both	Both can discuss PPAs and route-to-market services
Company without an energy procurement team	Ecotricity or npower fixed	A simple fixed structure may be safer than active flex purchasing
Energy-intensive industrial group	npower	Procurement, hedging and portfolio tools are designed for large users

Final verdict: Ecotricity vs npower

Ecotricity and npower Business Solutions are not direct competitors for every company.

For small businesses, Ecotricity is the clear option of the two because npower Business Solutions does not offer small-business quotations. Ecotricity provides a route to obtain business electricity and gas while supporting a renewable-focused supplier.

For medium and large organisations, the decision is more balanced.

Ecotricity is likely to be the stronger fit where the priorities are:

• 100% renewable electricity as standard;
• a clear environmental brand;
• time-matched renewable certificates;
• carbon-neutralised gas;
• a relatively straightforward supply arrangement; and
• direct support for additional renewable development.

npower is likely to be the stronger fit where the priorities are:

• contracts fixed for up to five years;
• staged wholesale purchasing;
• flexible or hybrid procurement;
• complex half-hourly supplies;
• multi-site portfolio management;
• detailed market reporting;
• active risk management; and
• integrating a corporate PPA into a supply contract.

Neither supplier can be declared universally cheaper. Prices depend on the quotation, consumption profile, contract structure and treatment of non-commodity charges.

A large organisation should ask both suppliers to price the same specification, including:

1. the same annual consumption forecast;
2. identical contract dates;
3. the same renewable requirements;
4. matching volume-tolerance assumptions;
5. identical treatment of network charges;
6. the same metering scope;
7. equivalent credit terms; and
8. a complete projected annual cost.

The practical conclusion is:

• choose Ecotricity for an accessible SME service or a renewable-first supply proposition;
• consider npower Business Solutions for sophisticated procurement and large multi-site requirements;
• compare both for a conventional fixed large-business contract; and
• do not compare old npower small-business tariff information with Ecotricity’s current products.

FAQ

Research notes

Current npower market position: npower Business Solutions states that it does not supply smaller businesses and directs them to E.ON Next. Its large-business page targets organisations with at least ten employees, electricity use above 100,000kWh or gas use above 293,000kWh, and turnover exceeding £2 million.

Licence and company identity: Ofgem’s April 2026 licensee list includes Npower Commercial Gas Limited as a non-domestic electricity supplier. The separate Npower Limited electricity supply licence was revoked from 1 August 2025.

Ecotricity eligibility: Ecotricity defines an SME as using under 200,000kWh of electricity, under 200,000kWh of gas or having no more than five meter points. It also accepts large-business enquiries.

npower fixed and flexible products: npower offers fixed electricity and gas contracts for up to five years. Its flexible products are described as suitable for annual consumption of 1GWh or more and include market analysis, position tracking and procurement support.

Renewable products and fuel mix: npower’s renewable product is backed by UK REGOs and can be combined with fixed or flexible contracts. Its published 2024/25 product mix shows 100% renewables for Business Renewable customers and a fossil-heavy mix for other products.

Ecotricity renewable features: Ecotricity supplies SMEs with 100% renewable electricity and carbon-neutralised gas. It offers Real Time REGOs and promotes PPAs for on-site generation above 250kW.

Current deemed prices: The Ecotricity and npower figures in the article come from their published deemed electricity schedules effective from 1 April 2026. The schedules contain different inclusions and exclusions, so the rates are not direct contract-price quotations.

PPAs and portfolio services: npower provides generator PPAs, Corporate PPAs and a Renewable Match service. Its large-business proposition also includes multi-site management, half-hourly insights and managed connections.

Business contract protections: Ofgem confirms that non-domestic contracts are not protected by the domestic energy price cap and that there is generally no cooling-off period after a business energy agreement is accepted.