Seimas has approved at the consideration stage a proposal to temporarily increase the energy value coefficient for biomethane, which means the biomethane price 2026 outlook in Lithuania could move lower for end users. If the bill passes the final vote, it will matter to fuel suppliers, transport companies, biomethane producers, and farms that provide feedstock for production.
Right now the local market is still thin because a large share of biomethane produced in Lithuania is exported. That makes fuel costs harder to plan for businesses and limits the benefit that local consumers can feel from domestic production. Below is what exactly Seimas is proposing, which numbers matter most, and what businesses should watch before the final vote.
Seimas approved at the consideration stage amendments to the Alternative Fuels Law (draft No. XVP-1354(2)) that would temporarily increase the energy value coefficient for certain fuels and make Lithuanian biomethane more attractive in the domestic market. The key proposal is to count biogas at 3 times its energy value and certain liquid biofuels at 2 times their energy value if they come from approved feedstocks. This still does not guarantee a fixed lower retail price, because the bill needs a final vote and the market would still set the final commercial offers.
- What changes: Seimas is considering temporary higher energy value coefficients for biomethane and some biofuels.
- Who is affected: fuel suppliers, transport businesses, biomethane producers, farms, and part of the end-user market.
- Main numbers: 3x for biogas, 2x for certain liquid biofuels.
- Timeframe: the proposal is linked to domestic market formation in 2026–2029.
- Main action: monitor the final vote and do not treat lower prices as guaranteed yet.
How could biomethane price 2026 change in Lithuania?
Seimas has approved at the consideration stage amendments to the Alternative Fuels Law that would temporarily change how the energy value of certain fuels is counted in regulation. The main point is that biogas would be counted as 3 times its energy value, while liquid biofuels and advanced liquid biofuels would be counted as 2 times their energy value if they are produced from feedstocks included in the list approved by the Minister of Energy.
But that is not the whole story. The proposal does not introduce a direct price cap or a mandatory lower pump price. Instead, it changes incentives. In practical terms, Lithuanian biomethane could become more attractive for suppliers that need to meet alternative fuel obligations, which may encourage them to keep more local production inside Lithuania instead of selling it abroad.
According to the sponsors, this should help the domestic market develop in the 2026–2029 period. If more supply stays in Lithuania, end users could see more competitive or at least more stable offers. Still, one limit matters: until Seimas passes the final vote, this remains a proposal rather than a rule already in force.
Who is affected right now?
This is not just a narrow energy-sector story. Several groups could feel the effect if the amendments are finally adopted.
- Fuel suppliers: they would get a stronger regulatory reason to use Lithuanian biomethane.
- Transport companies: a stronger domestic market could make longer supply agreements easier to negotiate.
- Biomethane producers: the local market could become more attractive, reducing reliance on exports.
- Farm businesses: stronger demand for biomethane production can support demand for feedstocks such as manure and slurry.
- End users: the intended result is a lower or more stable local biomethane price, although the final market outcome is not fixed yet.
For a broader picture of regulatory and cost changes, see our overview of what may change in Lithuania from 2026. It helps place this biomethane proposal inside the wider business environment.
Businesses should also read it together with our review of layoffs and business closures in Lithuania, because energy and fuel costs often shape margins, hiring plans, and investment timing.
Which numbers matter most in this proposal?
Here is where the concrete details matter most. The numbers below show both the size of the proposed mechanism and the scale of the market issue Seimas is trying to address.
| Number | Why it matters |
|---|---|
| 3 times | That is how biogas energy value would be counted if it is produced from approved feedstocks. |
| 2 times | That is how certain liquid biofuels and advanced liquid biofuels would be counted. |
| 2026–2029 | The period the sponsors connect with domestic biomethane market formation. |
| 50–60% | The share of Lithuanian biomethane that is currently exported, according to the figures cited in the bill summary. |
| €200 million | Approximate investment already made in biomethane production in Lithuania. |
| €40 million | Estimated sector value added in 2025. |
| €140 million | Targeted sector value added by 2030. |
These figures do not mean that the price will automatically fall by a specific percentage. They describe the legal mechanism and the current market situation. Draft No. XVP-1354(2) still needs a final Seimas vote, so there is no confirmed effective date yet.
What would this mean in practice for business and consumers?
This is the most important practical point: the proposal matters less because of a same-day price move and more because it could reshape supply conditions inside Lithuania. If suppliers have a stronger reason to keep local biomethane in the domestic market, Lithuania could become less dependent on exports and more competitive offers could appear over time.
Example. Tomas runs a regional logistics company and plans to move part of his fleet to biomethane. Today that is difficult because, according to the published figures, 50–60% of biomethane produced in Lithuania is exported. If more domestic supply stays in Lithuania after the final vote because local biomethane becomes more valuable under the 3x coefficient, Tomas would have a better chance of negotiating a longer and more predictable local supply agreement.
At the same time, the draft does not give an exact euro or cent reduction per unit of fuel. So it would be inaccurate to promise a specific percentage drop in price right now. The honest reading is narrower: Seimas is trying to create a mechanism that could make Lithuanian biomethane more competitive in the 2026–2029 period.
The impact also matters for producers and farms. If more biomethane is used in Lithuania, domestic demand would become more stable. That matters because the sector has already attracted roughly €200 million in investment, and the stated goal is to raise value added from €40 million in 2025 to €140 million by 2030.
A higher coefficient does not change the physical energy value of biomethane. It changes how regulation counts that fuel and therefore may change supplier behaviour, procurement choices, and market incentives.
What should companies do now?
Until the bill is finally adopted, the best response is practical and cautious. These steps help companies prepare without making risky assumptions.
- Check the bill status. Follow draft No. XVP-1354(2) and do not confuse the consideration stage with final adoption.
- Review 2026–2029 fuel plans. If your business is considering Lithuanian biomethane, model how demand and supply terms could change if the domestic market grows.
- Talk to suppliers now. Ask whether they are already reassessing local biomethane availability and long-term pricing scenarios.
- Watch the approved feedstock list. The higher coefficients would apply only where the feedstocks match the Minister of Energy’s approved list.
- Do not sell guaranteed savings yet. Until the final vote and actual commercial offers arrive, any lower price should be treated as a possibility, not a certainty.
Which mistakes are easiest to make?
The most common mistake is to read this as a final law already in force. It is not. The bill still has to pass the final Seimas vote.
- Treating the proposal as final law. Final adoption has not happened yet.
- Confusing the coefficient with a retail price cap. The bill does not set a fixed lower price for consumers.
- Ignoring the feedstock condition. The higher coefficients would apply only to approved feedstocks.
- Promising clients a guaranteed price drop. The actual market effect will depend on supplier behaviour and domestic availability.
- Overlooking the export factor. As long as a large share of output is exported, a political signal alone does not guarantee instant local oversupply.
Frequently asked questions
Will biomethane become cheaper automatically if Seimas adopts the bill?
No. The bill changes market incentives, not a fixed retail price. The final effect on price would still depend on supply, demand, and supplier decisions.
When could the new coefficient take effect?
No exact date has been published yet because the bill still needs a final Seimas vote. Only after final adoption and publication would the effective date become clear.
Who would benefit from the 3x biogas coefficient?
It would apply to biogas produced from feedstocks included in the list approved by the Minister of Energy. That means the rule would not automatically apply to every market case.
Why is Seimas raising this issue now?
One of the main reasons is that 50–60% of biomethane produced in Lithuania is currently exported. The sponsors want to support domestic use, reduce pressure on the end-user price, and help create a local market in 2026–2029.
Is this important only for the energy sector?
No. It may also matter to transport businesses, fuel suppliers, producers, and farms that provide feedstocks. In a broader sense, it is also a business environment and regional economy story.
The biomethane price 2026 outlook in Lithuania could improve only if Seimas finally adopts the higher coefficient rules and those rules actually keep more Lithuanian biomethane inside the local market. For businesses, the key step now is to monitor draft No. XVP-1354(2), review supply scenarios, and avoid treating a political signal as guaranteed savings.
Source: Seimas of the Republic of Lithuania, statement of 5 May 2026. Original release.