Simple
Facts

Why is hydrogen safe?

Yes, when handled with the right technology, standards and trained operators. Like electricity or natural gas, hydrogen requires proper infrastructure, sensors, ventilation and safety procedures

How much water does hydrogen production need

Green hydrogen needs water and renewable energy. The exact amount depends on the technology and scale, but ZAHYR will communicate this transparently to avoid speculation and misinformation

What can hydrogen replace?

Hydrogen can replace fossil fuels in areas where electrification is difficult — especially heavy transport, buses, logistics, industrial heating and selected production processes.

Is hydrogen expensive?

Today, green hydrogen is still more expensive than conventional fuels. Costs are expected to fall as technology, infrastructure and demand develop. ZAHYR will test what is technically and economically viable in real conditions.

Why hydrogen for trucks, buses and industry?

Because these sectors are harder to decarbonise. Heavy vehicles and industrial processes often need long range, fast refuelling, high energy density or continuous operation.

What is the role of ammonia in ZAHYR?

Ammonia can help store and transport hydrogen more efficiently. In ZAHYR, ammonia cracking will be tested as part of a hybrid hydrogen production model, together with electrolysis.

Will ZAHYR create jobs?

ZAHYR can support new skills, services and business opportunities in hydrogen technologies, mobility, industry, safety, maintenance, data and education.

How will ZAHYR benefit Stara Zagora?

ZAHYR can help Stara Zagora build a cleaner, more innovative and future-oriented economy by connecting hydrogen production, mobility, industry, education and public dialogue.

Is ZAHYR only a local project?

ZAHYR starts in Stara Zagora, but it is part of the wider European Hydrogen Valley movement and contributes to the development of hydrogen ecosystems across Europe

Hydrogen Applications

Hydrogen production

ZAHYR will demonstrate hybrid hydrogen production, combining renewable electricity and innovative hydrogen technologies to ensure reliable supply.

Mobility

The project will support hydrogen use in logistics and public transport, including vehicle retrofitting and hydrogen refuelling infrastructure.

Industry

Hydrogen will be tested in industrial applications, including heating and production processes.

Education and skills

Through training, awareness campaigns and cooperation with academic partners, ZAHYR will help build knowledge and capacity in the region.

Data and innovation

Digital monitoring and data analysis will support the project’s technical performance, learning and replication.