Wärtsilä pioneering test program for pure hydrogen engines

By Jack Burke14 July 2021

Expects to have engine, power plant concept ready by 2025

Wärtsilä said it expects to have an engine and power plant concept capable of running on 100% hydrogen by 2025, enabling the transition to decarbonized energy systems around the world.

Wärtsilä is now running a testing program for its balancing gas engines to be converted to use pure hydrogen as fuel. The project in Vaasa, Finland, will assess Wärtsilä’s existing 31 gas engine technology to find the optimum parameters for running on hydrogen, the company said. Wärtsilä’s gas engines are currently used for flexible balancing power generation for power systems with high levels of renewables.

“This is a milestone moment in the worldwide energy transition,” said Håkan Agnevall, CEO Wärtsilä. “Global societies will have to invest billions into the infrastructure needed to develop green hydrogen, but that investment is reliant upon having market-ready engines which can run on the fuel once it is readily available. Our modeling shows that a significant amount of thermal balancing is required by the middle of this century to achieve the transition to 100% renewable energy. By developing engines today which can run on hydrogen tomorrow, we are future-proofing energy systems to become 100% renewable by 2050.”

Green hydrogen is forecast to deliver 13% of global energy demand by 2070, but at present there are no commercially available engines that can effectively use the fuel, potentially jeopardizing global net-zero ambitions, the company said.

Green hydrogen, developed from renewable energy using electrolysis, and green hydrogen-based fuels can provide long duration energy storage to work alongside renewable generation and short-duration storage (such as lithium-ion batteries) to create reliable and fully decarbonized energy systems, according to the company

According to Wärtsilä’s energy system modeling, over 11 000 GW of wind and solar power is required in G20 economies alone in order to create 100% renewable energy systems. It will require 933 GW of carbon-neutral thermal balancing capacity to enable the addition of this amount of renewable energy and stabilize these future power systems.

The ability to modify existing engines to utilize hydrogen and hydrogen-based fuels when they become widely available is crucial to achieving global decarbonization goals, the company said.

“The internal combustion engine is a key technology in enabling the growth of renewables today, providing the flexibility required to support the intermittent generation of wind and solar,” according to a news release from the company. “Many countries are investing in new, highly efficient engines to support the sustainable acceleration of renewable energy. Being able to modify the engines in the future to utilize carbon-neutral fuels, such as green hydrogen and green hydrogen-based fuels, means that utilities can invest confidently now to enable the 100% renewable system required by the middle of this century, without risking stranded assets.”

Wärtsilä is now pioneering a milestone testing program for its balancing gas engines to be converted to use pure hydrogen as fuel. The project in Vaasa, Finland, will assess Wärtsilä’s existing 31 gas engine (seen here) technology to find the optimum parameters for running on hydrogen.

Wärtsilä’s grid balancing portfolio, consisting of power plants, energy storage and energy management systems, effectively manages high shares of renewables and creates the conditions to produce carbon-neutral future fuels which can decarbonize energy-intensive sectors, from power to mobility.

Wärtsilä is a leader in deploying thermal balancing and energy storage technology, delivering the essential flexibility required to rapidly accelerate the global shift to 100% renewable energy systems. It has installed a total of 74 GW of power plant capacity in 180 countries around the world, including a growing percentage of thermal balancing and more than 80 energy storage systems. Wärtsilä’s engines are capable of ramping up to full load in two minutes and can currently run on natural gas, biogas, synthetic methane or hydrogen blends, with a blending possibility of up to 25% hydrogen already proven today.

In parallel, Wärtsilä is running engine testing for ammonia and methanol, two alternative future fuels which will support the decarbonization of the shipping sector and help the International Maritime Organization to achieve its target to cut the sector’s GHG emissions by 50% by 2050.

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