LNG Costs: A Factory Playbook for China, Japan and Korea

Higher LNG costs should trigger a factory-level review of energy contracts, production exposure and efficiency options. For buyers sourcing from China, Japan and South Korea, the priority is to establish what each supplier actually pays for gas and how that cost reaches the purchase price. A regional spot-price headline is a warning signal, not a ready-made justification for a surcharge.

As of 27 September 2026, recent reporting continues to point to tight gas markets. The useful response combines supply continuity, commercial discipline and a clear record of any changes to the factory’s energy mix.

Why the LNG shock still matters

A Reuters report published by Gulf Times on 25 September described industry expectations that gas supply tightness could extend beyond winter. It also highlighted competition between Europe and Asia for LNG cargoes. Those are market expectations under uncertain conditions, rather than a reliable timetable for prices to fall. 1

On 17 September, Reuters reported that high fuel costs were causing some Chinese ceramics, methanol and glass producers to reduce output or shut plants. Its report also described weaker LNG demand across Northeast Asia, with different adjustments in China, Japan and South Korea. 2

Forecast dates matter. The IEA’s July gas report assumed that the Strait of Hormuz would fully reopen in the third quarter and undamaged regional facilities would restore operations by early in the fourth. Those assumptions should not be carried into a purchasing decision without checking subsequent developments. 3

Use this information to decide which suppliers need a conversation first. Start with critical products, limited alternative capacity and suppliers reporting material energy-cost changes. Ask for evidence before changing an order, accepting a price increase or drawing a conclusion about the supplier’s financial position.

Trace the cost from gas contract to product

Request a compact evidence pack for each priority factory: recent energy invoices, the relevant tariff or contract formula, consumption records and saleable output for matching periods. If the factory cannot share commercially sensitive documents, agree a controlled review or an appropriately redacted extract.

Check whether the price is fixed, periodically adjusted or linked to an index. Record the currency, adjustment lag, included charges and contract renewal date. Establish whether the supplier buys gas directly, receives heat from an industrial park or faces the exposure through purchased electricity. These are questions to investigate, not assumptions to make from the factory’s country.

For a first commercial screen, calculate:

Change in gas cost per saleable unit = change in the delivered gas price × gas consumed per saleable unit.

Keep the energy units consistent. Then reconcile this simplified calculation with fixed charges, changes in output, product mix and any agreed allocation method. It is a starting point for discussion, not a complete costing model.

Separate the effect of a higher tariff from the effect of consuming more energy per product. Otherwise a surcharge can conceal deteriorating utilisation or process performance. Ask the supplier to show both changes rather than presenting a single percentage increase with no calculation trail.

Compare factories without treating countries as proxies

A supplier review covering China, Japan and South Korea should use a common template, with evidence collected locally. A national demand trend cannot establish whether a specific production line will stop or whether its energy bill has changed this month.

Use three layers of comparison:

Review layer	Evidence to request	Decision it informs
Energy exposure	Delivered tariff, adjustment formula and renewal date	Timing and basis of a surcharge
Production exposure	Energy use by process, output and available capacity	Delivery and substitution risk
Response options	Maintenance plan, alternative supply arrangements and engineering assessments	Which actions deserve funding or escalation

For Chinese factories, ask whether the relevant line receives gas, electricity or centrally supplied steam, and identify the entity that sets its price. Apply the same discipline in Japan and South Korea rather than assuming all costs follow the same LNG benchmark.

Assign confidence levels to the evidence. A verified invoice and meter record should carry more weight in a decision than an unsupported verbal estimate. Keep unresolved questions visible instead of filling gaps with a country average that appears more precise than the information available.

Reduce heat losses before selecting new equipment

The US Department of Energy’s process-heating resources identify practical assessment areas including burner air-to-fuel ratios, heat-transfer surfaces, furnace air infiltration and waste-heat recovery. They provide a useful starting point for an engineering review, although their existence does not establish a saving at a particular factory. 4

Ask the site team to nominate the largest suspected losses and explain how they will measure them. A proposal should name the affected equipment, operating conditions, production constraints and responsible engineer. Combustion adjustments and equipment modifications should be assessed and implemented by qualified personnel within the site’s operating requirements.

Start with a bounded investigation rather than a promise to reduce energy use across the whole plant. Agree the measurement period, the output measure and the checks needed to distinguish an efficiency improvement from a change in production volume.

For each proposed intervention, record installation cost, downtime, maintenance implications and the evidence behind the expected reduction. If those inputs are missing, the next decision may be to fund measurement or a technical assessment rather than equipment. MindTrust’s supplier carbon assessment checklist offers a broader structure for organising the factory data.

Test electrification against the process and tariff

The IEA identifies heat pumps and electric boilers as promising options for lower-temperature industrial heat, while noting that competitiveness depends on energy and capital costs. Its analysis also discusses hybrid systems and thermal storage. This supports evaluating alternatives process by process, rather than assuming electricity is always the cheaper replacement for gas. 5

Prepare a specification before requesting quotations. Include the required temperature, heat demand over time, operating hours and acceptable interruptions. Ask the engineer to identify connection requirements and integration constraints, and request a clear explanation of which existing assets remain necessary.

Compare options on the same delivered-heat basis. Include the applicable electricity tariff, capacity charges, maintenance, connection work and financing assumptions. Run a base case alongside higher and lower energy-price cases. Label these as internal scenarios rather than predictions.

The practical question is whether an option remains acceptable across plausible operating conditions. A project that depends on one unusually high gas-price snapshot needs a different discussion from one supported by measured energy losses and a stable production requirement. Keep that distinction visible when comparing proposals.

Protect the carbon evidence during operational changes

Track fuel and purchased-energy changes alongside the cost analysis. The GHG Protocol’s Scope 2 Guidance addresses accounting for purchased electricity and other purchased energy; it is relevant when a factory changes how it obtains heat or electricity. 6

Request the actual quantities consumed, the period covered and the basis of the emission factors used. If electricity procurement changes, collect the supporting contractual information rather than accepting a renewable-energy label on its own. Have the reporting team assess the treatment under its applicable accounting method.

For a downstream buyer, the GHG Protocol’s Scope 3 Calculation Guidance provides methods for purchased goods and services and other value-chain categories. 7 Use an appropriate method to connect supplier information to the buyer’s inventory; do not simply subtract a supplier’s estimated project saving from the buyer’s total.

Keep absolute emissions, emissions per product and production volume separate. Lower total emissions during an output reduction do not, by themselves, demonstrate a more efficient process. Equally, an efficiency project needs a consistent baseline if its results are to support supplier comparisons or customer communications.

Agree a decision, an owner and a review date

Bring procurement, operations and sustainability colleagues together around one short record for each priority supplier. It should state the commercial issue, evidence received, remaining uncertainties and the action authorised.

Where a temporary surcharge is justified, document its calculation basis, review date and treatment if input costs change. Where delivery is at risk, agree the next capacity update and the conditions that would trigger escalation. Where an improvement project is promising, define who will validate its technical assumptions and measured results.

The aim is a repeatable decision process: verify exposure, examine options, record the trade-offs and revisit the decision when the evidence changes. To discuss how factory energy data can inform a wider supplier decarbonisation programme, talk to our team.