Marine SCR Technology for NOx Reduction
NOx Reduction and Future-Proof Solutions for GreenShipping
Choose sustainable propulsion solutions without compromises! Our Marine SCR technology reduces NOx emissions by >90% – even when using eFuels, Biofuels or HVO.
Norway’s fjords are among the most sensitive ecosystems in the world – and the new NOx limits demand swift action. As of January 1, 2025, only ships equipped with IMO Tier III-compliant propulsion systems or equivalent NOx reduction technologies are allowed to enter these waters. These regulations apply not only to newbuilds but also to existing vessels, which must be retrofitted accordingly. As a result, non-compliant vessels will lose access to these key routes and face significantly higher NOx taxes.
Why Choose H+H SCR Technology?
Selective Catalytic Reduction (SCR) is a proven solution for reducing NOx emissions. A urea-solution, 32,5 or 40% (known as AdBlue in the automotive industry) is injected into the exhaust stream, where it converts to Ammonia – NH3, this reacts with nitrogen oxides on the SCR catalyst, breaking NOx down into harmless nitrogen (N₂) and water vapor (H₂O).
Advantages of H+H SCR Technology:
✅ Flexible design – Less structural modification than OEM systems, minimal intrusion into existing setups
✅ Short delivery times – Respond quickly to new regulatory demands
✅ NOx reduction >90% – Maximize your savings through NOx Fund support
New NOx Regulations: How to Keep Access to Norway’s Fjords and Save on Taxes
With H+H’s Marine SCR technology, vessels can maintain access to the fjords while simultaneously reducing NOx tax costs. This is made possible through flexible retrofit options, minimal downtime, and the availability of government funding.
Reducing NOx emissions is certainly crucial for protecting both our environment and public health. NOx pollutants contribute to the formation of ground-level ozone and particulate matter, which can lead to respiratory issues, cardiovascular diseases, and exacerbate conditions like asthma. Environmentally, NOx contributes to acid rain, damaging ecosystems, water bodies, and biodiversity. The societal impact includes increased healthcare costs and reduced quality of life due to pollution-related health problems. By cutting NOx emissions, we can improve air quality, safeguard natural resources, and promote a healthier, more sustainable future for all.
Testimonials & Case Studies – Real-World Retrofit Success
H+H SCR systems provide a future-proof solution to meet strict regulatory requirements while ensuring the sustainable operation of your fleet.
“The solution provided by H+H convinced us: fast delivery, technical competence, and a real understanding of our operational needs.”
– Per Helge Viken (Superintendent – Rostein AS)
Rely on efficient NOx reduction and secure your customized solution with H+H Marine SCR technology.
📌 Over 30 years of experience in exhaust gas treatment
📌 In operation worldwide with leading shipping companies and engine manufacturers
📌 Reliable technology with proven performance
