HVO Fuel Price vs Diesel

Why Is HVO Often More Expensive Than Diesel?

Several factors contribute to the difference.

Renewable Feedstock Costs

HVO production requires suitable renewable oils, fats and waste materials. Demand for these feedstocks comes from several industries, including road transport and aviation.

When demand increases faster than available sustainable feedstock supply, prices can rise.

Feedstock quality also matters. Certified waste-derived feedstocks may command different prices depending on their source, availability and sustainability credentials.

More Complex Production

Crude-oil refining operates on an enormous global scale with infrastructure that has been developed for decades.

HVO requires specialist processing facilities where feedstocks undergo hydrotreatment and purification. Production capacity is considerably smaller than the conventional petroleum-refining industry.

Smaller supply volumes can therefore create additional production and distribution costs.

Limited Retail Availability

Diesel is available virtually everywhere.

Pure HVO has a much smaller public forecourt network, so businesses frequently purchase it through specialist fuel distributors.

Lower distribution density can increase logistical costs, particularly for smaller deliveries or remote sites.

Supply and Demand

HVO demand has increased as companies search for lower-carbon options that do not require replacing entire vehicle or machinery fleets.

Government statistics show that HVO represented a significant share of verified renewable fuel supplied in the UK in 2024.

As demand, imports, production capacity and feedstock availability change, the premium relative to diesel can widen or narrow.

Delivery Volume

Buying 500 litres and purchasing 20,000 litres are two very different transactions.

Large commercial deliveries may achieve a lower unit price because fixed logistics costs are spread across more fuel.

Businesses using substantial quantities should therefore compare total delivered cost rather than headline price per litre.

Example Cost Difference

Consider a hypothetical company consuming 10,000 litres of fuel each month.

If diesel costs £1.80 per litre:

10,000 × £1.80 = £18,000

If HVO costs £2.00 per litre:

10,000 × £2.00 = £20,000

The additional fuel expenditure would be:

£2,000 per month

or:

£24,000 per year

That difference is substantial.

However, another company might negotiate HVO only 10p above diesel, reducing the annual premium considerably. Conversely, a small emergency order may attract a much larger difference.

This is exactly why percentage assumptions alone can be misleading.

Does HVO Reduce Fuel Consumption?

Switching fuels does not automatically guarantee a dramatic reduction in litres consumed.

HVO has different density and combustion characteristics from petroleum diesel, while real-world fuel consumption depends heavily on:

• Engine design
• Vehicle weight
• Driving style
• Load
• Route
• Idling time
• Maintenance condition
• Weather
• Machinery application

For procurement purposes, businesses should use actual fleet consumption after trialling HVO rather than assuming that a cheaper or more expensive litre automatically translates into the same percentage difference in operating cost.

A controlled trial involving representative vehicles or machines can provide much better information.

Environmental Benefits of HVO

This is where HVO’s business case becomes much stronger.

The Department for Transport reported that verified renewable fuels supplied under the Renewable Transport Fuel Obligation achieved an average greenhouse gas saving of 80% compared with fossil fuel use in 2024, before accounting for indirect land-use change. The figure was 77% after accounting for those effects. These figures apply across verified renewable fuels rather than guaranteeing an identical percentage for every HVO product.

The actual lifecycle reduction associated with individual HVO supplies depends on factors including feedstock origin, production process, transportation and sustainability certification.

For organisations measuring Scope 1 emissions, bidding for environmentally sensitive contracts or working towards carbon-reduction commitments, those savings can have strategic value beyond the price paid for each litre.

Key Benefits of HVO Over Diesel

1. Lower Lifecycle Greenhouse Gas Emissions

The main reason businesses switch is environmental performance.

Renewable waste-derived fuels can deliver substantial lifecycle carbon savings compared with fossil alternatives.

This can help companies make progress towards internal decarbonisation targets without immediately replacing every diesel-powered asset.

2. Potential Drop-In Compatibility

Many modern diesel engines and items of equipment are approved to operate on EN 15940 paraffinic diesel fuels such as HVO.

This means some organisations can change fuel while continuing to use existing:

• Vans
• HGVs
• Generators
• Construction equipment
• Agricultural machinery
• Industrial engines

Manufacturer approval remains important, particularly for equipment under warranty.

3. Lower Infrastructure Disruption

Electrifying a fleet can involve buying new vehicles, installing chargers, increasing electrical capacity and changing operational schedules.

HVO may allow organisations to make a meaningful fuel change using much of their existing diesel infrastructure.

That does not make it universally cheaper, but it can make implementation considerably simpler.

4. Strong Storage Properties

HVO generally has better oxidation stability than FAME-heavy alternatives and does not suffer from exactly the same water-related storage characteristics associated with conventional biodiesel blends.

This can make it particularly attractive for standby generators and organisations storing fuel for extended periods.

Proper tank inspection and storage management are still essential.

5. Suitable for Hard-to-Electrify Operations

Some industries cannot easily replace diesel equipment with battery-electric alternatives.

Heavy machinery, remote generators, long-distance logistics and temporary construction sites may face range, charging or power-supply limitations.

The UK Government recognises low-carbon fuels as particularly important in transport sectors where alternatives such as electrification remain difficult.

Disadvantages of HVO

HVO is useful, but it is not magic fuel sprinkled with sustainability fairy dust.

Higher Purchase Price

The most obvious disadvantage is cost.

For businesses consuming hundreds of thousands of litres annually, even a small premium per litre can create a substantial budget increase.

More Limited Supply Network

Diesel remains easier to obtain.

Although HVO availability is expanding, organisations operating nationally may need more careful supplier planning.

For fleets and multi-site businesses, arranging Nationwide Fuel Delivery in UK can reduce the logistical difficulty, but delivery schedules and storage capacity still need consideration.

Compatibility Must Be Confirmed

HVO may work in many diesel engines, but organisations should not assume every engine, boiler, generator or vehicle is approved.

Check:

• Manufacturer documentation
• Warranty conditions
• EN 15940 approval
• Fuel-system requirements
• Storage tank compatibility

Sustainability Depends on Feedstock

Not all renewable fuel automatically delivers identical environmental benefits.

The source of the raw material matters.

Waste-derived feedstocks generally have stronger sustainability credentials than crops specifically cultivated for fuel production. UK statistics also show that waste feedstocks represented 77% of verified renewable fuel supply in 2024.

Businesses serious about emissions reporting should request proper sustainability certification from their supplier.

Advantages of Conventional Diesel

Despite its environmental drawbacks, diesel still offers important commercial advantages.

Lower Immediate Cost

Diesel is normally less expensive to purchase than HVO, making it attractive for cost-sensitive operations.

Extensive Availability

Public filling stations, truck stops and commercial suppliers provide diesel throughout the UK.

This reduces the risk of route disruption for vehicles travelling nationwide.

Familiar Infrastructure

Businesses already using diesel generally have suitable:

• Tanks
• Pumps
• Vehicles
• Refuelling procedures
• Maintenance programmes
• Supplier contracts

There is little transition work required.

Predictable Fleet Performance

Operators usually have years of data showing diesel consumption across routes, vehicles and machines.

That makes budgeting straightforward compared with changing to a relatively new fuel.

Disadvantages of Conventional Diesel

The biggest drawback is its dependence on fossil resources.

Diesel also exposes businesses to:

• Fossil-fuel carbon emissions
• Increasing customer pressure for sustainability
• Corporate net-zero commitments
• Potential future environmental regulation
• Oil-market volatility
• Reputation concerns in carbon-intensive industries

Recent UK diesel-price movements provide a useful reminder that fossil diesel is not necessarily a stable-cost option either. International oil-market disruption can quickly feed through to wholesale and retail fuel prices.

HVO vs Diesel: Full Comparison Table

HVO Fuel Uses

HVO has become attractive because it can serve many applications traditionally dependent on diesel.

Commercial Fleets

Transport businesses can use HVO to reduce lifecycle emissions from existing compatible diesel vehicles while avoiding immediate fleet replacement.

Construction

Excavators, telehandlers, generators and other construction machinery are difficult to electrify at some sites.

HVO can therefore provide an interim route towards lower-carbon operations.

Backup Generators

Hospitals, data centres, commercial buildings and industrial facilities often depend on diesel generators for emergency power.

HVO’s storage characteristics can make it worth considering for suitable standby systems.

Agriculture

Agricultural machinery frequently operates long hours and requires high energy density.

Where regulations and equipment approvals permit, HVO may be used in suitable machinery.

Events and Temporary Power

Temporary generators used for festivals, outdoor events and temporary installations are another potential application.

Industrial Operations

Factories and engineering businesses may use diesel engines or generators that can potentially operate on HVO without major mechanical conversion.

Which Fuel Is More Cost-Effective?

The answer depends on what you mean by cost-effective.

If cost-effectiveness means:

“What fuel costs me less to buy this week?”

Diesel will usually win.

If the calculation includes:

• Carbon reduction
• Sustainability reporting
• ESG objectives
• Customer procurement requirements
• Fleet replacement avoidance
• Corporate environmental commitments
• Existing equipment utilisation

HVO may become considerably more attractive.

A business facing a £200,000 fleet-replacement programme may decide that paying slightly more for fuel is preferable to prematurely replacing functioning diesel assets.

Another company operating on extremely tight margins with no immediate emissions obligations may reasonably continue using conventional diesel.

Neither decision is automatically right for every organisation.

Calculating the True Cost of HVO

Instead of comparing only pence per litre, businesses should calculate total operating cost.

A useful model is:

Annual fuel requirement × delivered fuel price = annual fuel expenditure

Then add or subtract:

• Storage changes
• Equipment conversion costs
• Maintenance impact
• Carbon-accounting value
• Supplier charges
• Delivery costs
• Fleet replacement avoided
• Contract requirements

For example, if switching to HVO allows a company to meet a customer’s emissions requirement and retain a valuable contract, the higher fuel cost may be commercially justified.

This is where simple pump-price comparisons fall apart rather quickly.

How Businesses Can Reduce HVO Costs

Buy in Larger Quantities

Where storage capacity allows, fewer large deliveries can provide better economics than frequent small orders.

Obtain Delivered Prices

Ask suppliers for the total price delivered to your site.

A low advertised unit rate means little if significant delivery charges are added afterwards.

Plan Deliveries in Advance

Emergency fuel deliveries can cost more.

Accurate fuel monitoring helps procurement teams avoid last-minute orders.

Compare Contracts and Spot Purchases

Some businesses prefer fixed or structured supply agreements, while others purchase according to spot-market conditions.

The best approach depends on consumption volume and risk tolerance.

Improve Fuel Efficiency

Reducing unnecessary fuel use benefits both HVO and diesel users.

Fleet telematics, preventative maintenance, driver training, route optimisation and reduced idling can lower overall consumption.

Saving 5% of fuel consumption can sometimes matter more than negotiating a tiny difference in price per litre.

Should You Switch Completely from Diesel to HVO?

Not necessarily.

Some organisations start with selected vehicles, sites or projects.

A staged approach allows a business to evaluate:

• Engine performance
• Consumption
• Supplier reliability
• Storage arrangements
• Actual cost premium
• Carbon savings
• Staff procedures

After gathering real operational data, the organisation can decide whether to expand HVO use.

This reduces financial risk and provides evidence rather than relying on assumptions.

HVO or Diesel for Small Businesses?

For small businesses, cash flow often matters more than complex carbon reporting.

Diesel may remain the most practical option where annual fuel consumption is relatively low and there is no customer requirement to demonstrate fuel-related carbon reductions.

However, HVO may make sense for businesses that market themselves around sustainability or tender for contracts were environmental performance influences supplier selection.

The decision should therefore consider revenue opportunities as well as fuel expenditure.

HVO or Diesel for Large Fleets?

Large fleets face a different calculation.

A 10p-per-litre difference multiplied across millions of litres can be enormous.

At the same time, replacing hundreds of diesel vehicles can require millions of pounds of capital expenditure.

HVO can provide a transitional solution where suitable vehicles remain operational but the organisation wants to reduce lifecycle emissions sooner.

Fleet managers should model:

• Cost per litre
• Cost per mile
• Annual mileage
• Fuel economy
• Carbon savings
• Replacement timetable
• Vehicle residual value
• Charging infrastructure plans

That produces a much better decision than simply asking which fuel is cheaper.

HVO Price vs Diesel: Future Outlook

The HVO-diesel price gap is unlikely to remain constant.

HVO prices will continue to be influenced by renewable feedstock availability, international production capacity, government policy, fuel certificates, transport costs and growing demand from industries seeking lower-carbon liquid fuels.

Diesel prices will continue to move according to crude-oil prices, refinery margins, currency movements, geopolitical conditions, tax policy and retail competition.

The UK’s Renewable Transport Fuel Obligation continues to support the supply of low-carbon fuels, and official policy identifies these fuels as part of the country’s broader transport decarbonisation strategy.

For buyers, this means today’s price difference should not be treated as a permanent forecast.

Is HVO Worth Paying More For?

HVO can be worth the premium when carbon reduction has measurable commercial value.

It may be especially attractive for organisations that:

• Cannot electrify equipment immediately
• Have modern HVO-compatible diesel assets
• Need measurable progress towards carbon targets
• Work on environmentally sensitive contracts
• Want to reduce reliance on fossil diesel
• Require a transition fuel before moving to zero-emission equipment

Diesel may remain more suitable where:

• Lowest immediate operating cost is the priority
• HVO supply is difficult
• Equipment compatibility is uncertain
• Fuel consumption is very high and margins are tight
• Carbon reduction does not currently affect procurement decisions

The strongest approach is to calculate both financial and environmental costs rather than treating either fuel as automatically superior.

Final Thoughts

The HVO fuel price vs diesel debate ultimately comes down to what a business is trying to achieve.

Diesel normally offers the lower upfront fuel price and unrivalled availability throughout the UK. It remains deeply embedded in transport, construction, agriculture and industry.

HVO’s strength lies elsewhere. It offers businesses the possibility of reducing lifecycle greenhouse gas emissions while continuing to operate many compatible diesel vehicles, generators and machines. That can make it one of the more practical transitional fuels for organisations that are not yet ready to electrify their entire operation.

Its higher purchase price should therefore be viewed alongside carbon performance, operational flexibility, equipment replacement costs and long-term sustainability objectives.

Businesses considering the switch should obtain a current delivered quotation, verify manufacturer compatibility and compare annual operating costs rather than making decisions from a generic national price. Fuel suppliers such as 123 Oil can provide pricing based on delivery quantity, location and specific fuel requirements.

The cheapest litre is not necessarily the fuel that creates the best overall business value.