Green Gas News

• October 2026 Market Update

  Our October 2026 Market Update is now available (you can download the PDF file below)...

  Posted: 30 October, 2026

• Update on PHP Cyber Risk

  GGCS has confirmed with EEX the provider of our registry (G-REX) that they don't use the PHP programming language as part of their system. We have also confirmed with our website provider that PHP is not used. We have no reason to believe that the security concerns publicised today regarding PHP will effect our systems but we will continue to monitor the situation...

  Posted: 22 October, 2026

• June 2026 Market Update

  Our June 2026 Market Update is now available (you can download the PDF file below)...

  Posted: 21 July, 2026

• G-REX Database Announcement from EEX

  GGCS participants are advised by the GGCS Team to review and confirm the below EEX announcement with their IT providers:As part of our commitment to maintaining the highest security standards in G-REX, we will be implementing changes to enforce modern TLS (Transport Layer Security) standards across all areas of the G-REX registry. Following the deployment of these changes, TLS 1...

  Posted: 20 July, 2026

• GGCS Guidance Documents

  The GGCS publishes a range of guidance documents for its members on both operational and policy issues. Numbering of document reflects the sequence of which version 1.0 of the document was originally published and some documents have since been been withdrawn or merged into other documents...

  Posted: 26 May, 2026

• 2025 Annual Report Released

  We are pleased to publish our annual report covering the activity of the Scheme in 2025 (available here).Landmarks and achievements during the year include:4.2 TWh of RGGOs retired/cancelled, compared to 3.4 TWh in 2024...

  Posted: 11 May, 2026

• April 2026 Market Update

  Our April 2026 Market Update is now available (you can download the PDF file below)...

  Posted: 22 April, 2026

• December 2025 Market Update

  Our December 2025 Market Update is now available (you can download the PDF file below)...

  Posted: 22 January, 2026

• October 2025 Market Update

  Our October 2025 Market Update is now available (you can download the PDF file below)...

  Posted: 30 October, 2025

• GGCS issues the UK’s first Guarantees of Origin for Hydrogen

  GGCS Issues the UK’s First Guarantees of Origin for HydrogenIn early October, National Gas and Centrica blended green hydrogen into the UK’s National Transmission System (NTS) for the first time.For each kWh injected, GGCS issued a Renewable Gas Guarantee of Origin (RGGO). They were transferred to Centrica, who allocated them to Brigg Power Station, just downstream of the injection point...

  Posted: 29 October, 2025

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