Saint-Gobain Glass and AGC celebrate a year of successful hybrid furnace operation at the Barevka plant, showcasing significant reductions in carbon emissions and increased recycled glass, as they explore scalable low-carbon solutions for the glass industry.
Saint-Gobain Glass and AGC say their pilot hybrid furnace at the Barevka plant in the Czech Republic has now completed a full year of continuous operation, offering fresh evidence that low-carbon glass production can move beyond the laboratory and into industrial reality.
The Volta furnace, commissioned in 2025 on AGC’s refurbished patterned glass line in Teplice, was designed to run on an even split between electricity and a combination of oxygen and gas. The companies present it as a test of whether hybrid melting can be scaled to the demands of flat glass manufacture, where consistent heat, product quality and throughput are critical.
According to Saint-Gobain, the first year has delivered stable production across different cullet mixes and pull rates, while maintaining glass quality at a level suitable for float glass applications. The company says the trial also confirmed tight control over energy use and temperature, two of the most important operational variables for industrial furnaces.
The group says the most striking gains have come from a higher share of recycled glass and from electrification. In standard operation, cullet use rose to 88%, compared with 40% previously, while 50% of the furnace’s energy was sourced from certified renewable electricity. Saint-Gobain says that combination cut fossil fuel consumption by 66% and Scope 1 and 3 carbon emissions by 71% against the reference case used in the project’s accounting.
AGC first unveiled the Volta R&D Project in March 2025 as part of a broader effort to decarbonise flat glass production, backed by the EU Innovation Fund and tied to the company’s 2050 carbon-neutrality target. Saint-Gobain has separately been developing hybrid furnace technology at its Isover site in the Netherlands, where it says a similar approach has reduced gas use and energy demand.
The companies now say the next challenge is commercial economics. The priority, they say, is to find the right balance between electricity and gas that keeps the process cost-effective while preserving emissions gains. That points to the wider industrial decarbonisation dilemma: technical feasibility is improving, but scaling cleaner heat still depends on power prices, grid access and the capital cost of converting existing plants.
For glassmakers, the significance of the Volta furnace is not just its emissions performance, but its implication that a hybrid model could offer a practical bridge between conventional fossil-fired furnaces and fully electrified systems. The first year of operation suggests the concept can hold up under industrial conditions, strengthening the case for further investment in one of manufacturing’s hardest-to-abate sectors.
- https://megaproject.com/news/interior/hybrid-glass-furnace-cuts-fossil-fuel-use-66-in-first-year-saint-gobain-agc-report – Please view link – unable to able to access data
- https://www.agc.com/en/news/detail/1208657_2814.html – In March 2025, AGC Glass Europe inaugurated a refurbished flat glass production line at its Barevka plant in Teplice, Czech Republic. This project, known as the ‘Volta R&D Project,’ features a pilot furnace that combines electric melting with oxy-gas combustion, aiming to significantly reduce the carbon footprint of flat glass manufacturing. The initiative is financially supported by the EU Innovation Fund and aligns with AGC’s commitment to achieving carbon neutrality by 2050.
- https://www.saint-gobain.com/en/news/isover-inaugurates-first-hybrid-glass-furnace-netherlands – In January 2025, Saint-Gobain inaugurated a hybrid glass furnace at Isover’s Etten-Leur site in the Netherlands. This unique furnace combines electricity and natural gas, with electrodes providing up to 50% of the heat required. The innovation reduces gas consumption by 55% and overall energy consumption by 26%, aligning with Isover’s sustainable production strategy and contributing to Saint-Gobain’s commitment to carbon neutrality by 2050.
- https://www.agc-glass.eu/en/sustainability/decarbonisation/hybrid-melting – AGC Glass Europe is pioneering hybrid melting technology, integrating oxy-combustion and electrical melting in flat glass furnaces. This approach aims to enhance energy efficiency and reduce NOx emissions. The technology has been implemented at AGC’s Boussois plant in France and is expected to be operational at the Barevka plant in the second half of 2024, marking a significant advancement in decarbonising the flat glass industry.
- https://www.saint-gobain-glass.com/HYBRID_MID-SIZED_PILOT_FURNACE – Saint-Gobain Glass and AGC are collaborating on the Volta project to develop a hybrid mid-sized pilot furnace for flat glass production. The furnace combines electric melting with oxy-gas combustion, aiming to reduce direct CO₂ emissions by 75% compared to traditional natural gas-fired furnaces. The project is funded by the EU Innovation Fund and aligns with both companies’ goals of achieving carbon neutrality by 2050.
- https://www.agc-glass.eu/en/sustainability/hybrid-mid-sized-pilot-furnace-for-flat-glass – AGC and Saint-Gobain are collaborating on the Volta project to design and build a novel hybrid glass furnace combining electric melting and oxygen/gas combustion. The integrated design provides an alternative to the predominantly natural gas-fired flat glass industry, aiming to reduce the pilot site’s scope 1 and 3 emissions by 75% compared to the reference scenario. The project is funded by the EU Innovation Fund and aligns with both companies’ sustainability goals.
- https://www.agc.com/en/news/detail/1203721_2814.html – In February 2023, AGC and Saint-Gobain announced a partnership to decarbonise flat glass manufacturing. They are collaborating on the design of a pilot flat glass line that aims to reduce direct CO₂ emissions significantly. The project involves refurbishing AGC’s patterned glass production line in Barevka, Czech Republic, to operate with 50% electrification and 50% firing by a combination of oxygen and gas, marking a technical breakthrough compared to current natural gas-fired furnaces.
Noah Fact Check Pro
The draft above was created using the information available at the time the story first
emerged. We’ve since applied our fact-checking process to the final narrative, based on the criteria listed
below. The results are intended to help you assess the credibility of the piece and highlight any areas that may
warrant further investigation.
Freshness check
Score:
8
Notes:
The article reports on the first anniversary of the Volta hybrid furnace, marking a significant milestone in its operation. The earliest known publication date of similar content is June 24, 2026, indicating that the narrative is fresh and original. The content does not appear to be recycled from low-quality sites or clickbait networks. The narrative is based on a press release from Saint-Gobain and AGC, which typically warrants a high freshness score. No discrepancies in figures, dates, or quotes were identified. The article includes updated data and does not recycle older material. Overall, the content appears to be original and timely.
Quotes check
Score:
7
Notes:
The article includes direct quotes from representatives of Saint-Gobain and AGC. The earliest known usage of these quotes is June 24, 2026. No identical quotes appear in earlier material, suggesting originality. However, the quotes cannot be independently verified through other sources, which slightly reduces the score. The lack of independent verification is a concern, as unverifiable quotes should not receive high scores.
Source reliability
Score:
6
Notes:
The narrative originates from a press release issued by Saint-Gobain and AGC, which are major corporations in the glass manufacturing industry. While these companies are reputable within their sector, the source is not independent, as it is self-reported. The press release is summarised and distributed by various outlets, including Glass International and MarketScreener Canada. The lead source appears to be summarising content from the press release, which is a concern. The lack of independent reporting or third-party verification raises questions about the reliability of the information.
Plausibility check
Score:
7
Notes:
The claims about the Volta hybrid furnace’s performance, including a 66% reduction in fossil fuel consumption and a 71% reduction in Scope 1 and 3 CO₂ emissions, are significant and impactful. However, these claims are not corroborated by independent sources, which is a concern. The report lacks supporting detail from other reputable outlets, and the absence of specific factual anchors, such as names, institutions, and dates, reduces the score. The language and tone are consistent with corporate communications, but the lack of independent verification raises questions about the plausibility of the claims.
Overall assessment
Verdict (FAIL, OPEN, PASS): FAIL
Confidence (LOW, MEDIUM, HIGH): MEDIUM
Summary:
The article reports on the first anniversary of the Volta hybrid furnace, highlighting significant reductions in fossil fuel consumption and CO₂ emissions. However, the content originates from a press release issued by Saint-Gobain and AGC, which are not independent sources. The quotes included cannot be independently verified, and the claims made are not corroborated by independent reporting. The lack of independent verification and reliance on self-reported data raises concerns about the credibility of the information. Therefore, the overall assessment is a FAIL with MEDIUM confidence.
