The gas transmission system operator Amber Grid has selected a new service provider for the Guarantees of Origin registry for renewable energy sources. The new registry is launching on September 22nd, 2025.
Following a public procurement procedure conducted by Amber Grid, the company Grexel Systems Oy was chosen as the service provider. A three-year service agreement was signed with the company on July 10th, 2025.
Grexel Systems Oy is a provider of guarantees of origin registry services with extensive experience in implementing GoO registries and integrating them with existing European platforms, enabling the exchange of guarantees of origin between EU member states. The registry system is designed to ensure traceability of gas produced from renewable energy sources and to meet the needs of cross-border exchange between member states.
“Joining the common European system for guarantees of origin is an important step, opening up opportunities for Lithuania to export green gas to other EU countries, and for Lithuanian market participants to take part in the common European sustainable energy market. Given Grexel Systems Oy's experience in implementing guarantees of origin registry projects and integrating them with European systems, we are confident that this partnership will help us achieve our strategic goal – to promote the production of renewable gas in Lithuania and facilitate cross-border trading,” said Amber Grid CEO Nemunas Biknius.
The main objective of the new registry is to ensure transparent and reliable issuance, transfer, and use of guarantees of origin, certifying the renewable origin of gases such as biomethane or hydrogen. One of the key advantages of the system is the ability to efficiently transfer guarantees of origin between EU member states, supporting the integration of the EU energy market.
The new system is particularly necessary due to the growing biomethane sector in Lithuania. In the first half of 2025, more than 90 GWh of guarantees of origin were issued for biomethane injected into the national gas grid, compared to nearly 130 GWh in 2024. By the end of 2025, six biomethane plants are expected to be connected to Lithuania’s gas transmission and distribution system, with plans to connect around ten more by 2030.
99% of green gas is used in the transport sector, contributing to national decarbonization goals.
According to the National Energy Strategy, 1.4 TWh of biomethane is expected to be produced by 2030. Collaboration with Grexel Systems Oy will help boost the production of gas from renewable energy sources, facilitate its transfer to other countries, and support Lithuania’s energy transformation and sustainability goals.
