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Ammonia industry can grow while achieving deep carbon cuts

December 20, 2022 by Jacob Susman Leave a Comment

Jacob Susman is a clean economy business builder, investor, and thought leader who has been developing and originating renewable energy projects for over 20 years. He is CEO and co-founder of Ambient Fuels, a green hydrogen developer guiding heavy industry through the great green upgrade. 

Molecule

Our worldwide food supply depends on ammonia-based fertilizers to increase the nitrogen content in soil. Nitrogen is by far the most plentiful element in air (making up more than 80% of earth’s atmosphere), but needs to be converted to a form plants can use. For over 100 years, ammonia has served this vital purpose.

The Haber-Bosch process allows us to utilize nitrogen extracted from the air and bond it with hydrogen to produce ammonia. This process itself involves no carbon and its use does not produce greenhouse gases. The hydrogen used in the process, on the other hand, currently comes almost exclusively from steam methane reforming — producing pure hydrogen from natural gas. This hydrogen use in producing ammonia alone accounts for over 1% of global greenhouse gas emissions.

How can we decarbonize this crucial but hard-to-abate sector? We need green hydrogen, produced from renewable electricity and water. Like the Haber-Bosch process itself, green hydrogen has no carbon as either an input or output and produces no harmful byproducts.

The main problem with green hydrogen historically is that it has been significantly more expensive than the gray hydrogen made from natural gas. Now the cost of renewable electricity from solar and wind have achieved cost parity with natural gas electrical generation, and in many areas is actually cheaper. The electrolyzers used to separate water into hydrogen and oxygen have become more energy efficient, and the equipment itself is dropping in price. As more electrolyzers are installed, learning rates will keep lowering the capital expenditures needed to set up green hydrogen production.

Recently green hydrogen has also received a game-changing boost in the U.S. from the Inflation Reduction Act, which created Production Tax Credits for hydrogen produced with low-carbon emissions. Europe hasn’t yet matched these incentives, but soaring natural gas prices due to Russian sanctions have helped green hydrogen to achieve parity there as well. Natural gas prices in Europe remain 20% higher than pre-pandemic levels, and the wild price volatility has made it less attractive.

To ensure price stability, ammonia producers have a compelling opportunity to diversify their hydrogen supply away from gray hydrogen and toward green. Luckily, this can be done incrementally over time. In the Haber-Bosch process, hydrogen is hydrogen: it makes no difference how the hydrogen is produced. As green hydrogen becomes more widely available, ammonia manufacturers can start small, blending green hydrogen in with gray without needing any new equipment or process changes.

As you incrementally increase the percentage of renewable hydrogen, you see a corresponding drop in Scope 1 (inside the plant) and Scope 2 (power supply) carbon emissions: by replacing 10% of your gray hydrogen with green, you will see an immediate 10% decrease in your total emissions.

That’s why we believe that ammonia will be among the first industries to adopt green hydrogen on a large scale, and why we’re now working with industry leaders to make that happen. 

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What we know about green hydrogen in the Inflation Reduction Act

August 5, 2022 by Jacob Susman Leave a Comment

Jacob Susman is a clean economy business builder, investor, and thought leader who has been developing and originating renewable energy projects for over 20 years. He is CEO and co-founder of Ambient Fuels, a green hydrogen developer guiding heavy industry through the great green upgrade. 

Now that Democrats have reached agreement on the “Inflation Reduction Act” (IRA), it should fast-track through the Senate and could become law by the end of the month.  Based on initial study of the bill text, it looks like a huge win for renewable energy that will jumpstart a green hydrogen revolution.

Two studies project the bill would significantly boost U.S. efforts to cut greenhouse gas (GHG) emissions and meet our obligations under the Paris climate agreement.

Comparing projections of greenhouse emissions in 2030 with and without the new provisions in the IRA, Rhodium Group finds the bill would reduce GHG emissions by an extra 27.4%. Energy Innovation’s data suggest the boost could be as high as 34.4%. This won’t be enough on its own for the U.S. to reach our 2030 goal, but it will move us significantly closer.

The solar and wind industries have been flagging recently — down 53% and 78% respectively in the second quarter compared to last year — not because of lack of demand, but over policy uncertainty and supply chain issues. Developers and manufacturers in those sectors are eagerly awaiting the restart that this bill could provide.

What about green hydrogen, another way to put renewable energy to work to lower carbon emissions for industries that need a green molecule? It has already drawn a lot of attention this year for use cases as varied as trucking, shipping, and decarbonizing heavy industry.

The law would allow hydrogen producers to access a production tax credit for the first time.  The credit uses a tiered system so that producers of “green” hydrogen, which generates the lowest kilograms of CO2 per kilogram of hydrogen produced get a larger amount. The lower tiers are intended to incentivize existing “gray” hydrogen producers (which use fossil fuels and generate significant emissions) to add carbon capture technology to their facilities, producing what’s known in the industry as “blue” hydrogen.

Ambient Fuels and other green hydrogen producers replace fossil fuels in the production process with electricity generated from renewable sources such as solar and wind, ensuring that hydrogen can be produced in large quantities without fossil fuels as an input. For green hydrogen producers with CO2 emissions less than 450g for each kilogram of hydrogen, the tax credit will increase to $3/kg of hydrogen. This credit will ensure that green hydrogen will be more affordable than gray hydrogen in the near future.

Industry leaders have generally responded favorably to the new legislation. Jeff Bechdel, a spokesperson for Hydrogen Forward, said the bill “will encourage further growth of clean hydrogen, which will play a critical role in addressing hard-to-decarbonize sectors like transportation, heavy industry, agriculture, and power generation.”

Ryan Breen, the Head of Corporate Strategy at Jericho Energy Ventures, said “the Hydrogen Production Tax Credit (PTC), if passed, will become the most consequential piece of legislation for the adoption of clean hydrogen.”

Jericho is a venture capital firm that seeks opportunities in the “hydrogen value chain.” Breen said in the search for economic ways to decarbonise hard-to-abate sectors like power generation and heavy industry, “the maximum $3/kg Hydrogen PTC will immediately put hydrogen into cost parity with carbon-emitting fuels like coal and natural gas. 

“Much like the solar tax credits of the mid-2000’s,” he said, “we expect to see tremendous growth for the utilization of clean hydrogen across the U.S. economy over the next decade.”

Some critics say the bill does too much to transition gray to blue hydrogen, but not enough for green hydrogen — the truly environmental option. Under the bill, you’d still get incentives even if you produced 4 kg of CO2 per kilogram of hydrogen. That’s half as much as a gray hydrogen facility, but it’s still at least eight times more than green hydrogen, which is produced with hardly any carbon footprint, far under the lowest tier of 450 grams per kilo. 

As Abbe Ramanan, project director at the nonprofit Clean Energy States Alliance and Clean Energy Group, said, “although the bill provides a higher incentive for less-carbon intensive hydrogen, there is no other incentive for producers to pursue cleaner forms of hydrogen production.” That’s where transparency comes in, carbon accounting, and holding governments and major brands to their net-zero commitments.

The bill still has several obstacles to overcome before final passage. First, it must be approved by the non-partisan Senate Parliamentarian as a budget reconciliation bill, allowing it to pass the Senate with 51 votes instead of a 60 vote supermajority. 

Once the bill is certified, the Democrats need every single member of their caucus to return to Washington D.C. during August recess to vote in person. That could be a challenge, not just because of vacation plans but the nationwide spike in new COVID infections. 

It’s worth it, for the climate, for the economy, and to spare us from heavy industrial carbon pollution when we now have an alternative.

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