5 factors driving hydrogen investment

By Paul Homewood

High production costs mean that the initial deployment of hydrogen is likely to focus on high value end users in industrial clusters, for example in the production of low carbon steel & chemicals, heavy transport and peak power generation. Development of hydrogen clusters is already underway for example in the UK, Netherlands & Scandinavia.

Blending of hydrogen in existing high pressure natural gas networks is possible up to at least 20% by volume (around 7% by energy).  Blending does not target high value end use, but it does support the broader scaling of hydrogen production to displace natural gas over time.

2.Supply chain costs shape competitiveness

Production cost structure will shape the deployment and utilisation of hydrogen as a fuel. Yet green & blue hydrogen have very different supply chain structures, as summarised in Chart 2.

The green hydrogen supply chain is characterised as follows:

• Infrastructure: Requires renewable generation (RES) & transmission network infrastructure as well as electrolysers – this is effectively incremental infrastructure to support the incremental power demand required to produce hydrogen.
• Total costs: Currently high, but with large potential for cost declines as electrolyser capex falls with scaling. Access to low cost power is also a key cost driver which should improve over time with RES penetration.
• Variable costs: Directly linked to power market prices in most cases, given strong advantages of connecting electrolysers to the grid (e.g. to access top up power & additional revenue streams).
• Key issues: Renewable resource constraints. Power network constraints. Electrolyser capex decline rates. Prevalence of low market power prices to support utilisation rates high enough to earn a return on capital.

The blue hydrogen cost chain looks very different:

• Infrastructure: Significant advantages from re-using existing gas network infrastructure to transport feed energy & sequester C02. SMR infrastructure is conventional technology & carbon capture relatively simple (e.g. vs post combustion power plant CCS).
• Total costs: Currently significantly lower than green hydrogen (helped by lower infrastructure footprint), but with less potential for cost declines and a residual carbon footprint that needs to be cleaned e.g. via purchasing carbon EUAs.
• Variable costs: Directly linked to market price for natural gas + processing costs for SMR and CCUS. Likely to be significantly lower than average green hydrogen variable costs across at least a 10-15 year horizon.
• Key issues: Limited potential to reduce costs over time. Cost effective access to sequestration infrastructure e.g. depleted gas fields. Dealing with residual carbon footprint.

In the long run e.g. 2040+, incremental investment in hydrogen production capacity is likely to be dominated by green hydrogen. In fact the deployment of electrolysers will likely be a key means of facilitating very high penetration of wind & solar, by helping to balance huge swings in generation.

But across the next 20 years there are practical limits as to how fast electrolysers can be scaled.  These are driven by constraints relating to the pace of renewables build, network congestion and availability of low cost power.  This paves the way for green and blue hydrogen to compete & co-exist.

3.End user demand to shape deployment

We are used to price responsive power & gas markets that dynamically balance independent sources of supply & demand.  Hydrogen may evolve into a more liquid market over time, but for at least the next 10 years, end user requirements will play a key role in shaping hydrogen deployment and supply chains.

Many of the ‘foundation customers’ for low carbon hydrogen are likely to be industrial sites e.g. steel & chemical producers. The requirements of end users will be important in shaping the evolution of hydrogen. For example:

• Pricing: how hydrogen cost is integrated into end user margin e.g. fixed price vs linkage to hydrogen production costs
• Volume flexibility: to meet end user demand profiles e.g. supporting peak power generation
• Reliability: to avoid large cost penalties if industrial processes are interrupted.

As was the case in the early stages of gas and LNG market evolution, hydrogen offtake contracts will play a key role in defining the price & volume structure and risk sharing relationships between producers and consumers.

Local hydrogen markets are likely to develop much more quickly than cross border markets. Industrial & power generation clusters require only 2 or 3 hydrogen end users to spawn transactions in a local market e.g. resale of surplus volumes or purchase of incremental volumes. There may also be instances where owners of otherwise potentially stranded gas assets can bring existing infrastructure to the party (pipes, storage, compression) at costs much lower than new build.

A liquid pan-European market is many years away, but it if it comes, growth will likely be driven organically from expanding local markets.

4.Hydrogen is cheaper to store than power

The ability to store energy across periods of low wind & solar output is one of the key challenges of decarbonisation.  Storage of power is expensive, particularly over longer durations (e.g 8 hrs +). Hydrogen production may be expensive, but its storage is relatively cheap.  This will be an important factor shaping hydrogen supply chains & utilisation.

Storage related opportunities include:

• Power: Storing green hydrogen during periods of high renewable generation, to generate power in low periods e.g. in the UK where up to 100GW of offshore wind is envisaged by 2050.
• Products: storing energy cheaply in other liquid or solid forms e.g. using hydrogen to produce green ammonia.
• Natural gas: Using existing midstream natural gas infrastructure (storage, regas & pipes) to enhance blue hydrogen supply chain flex.

Electrolysers can also provide key flexibility services to power networks to compliment electricity storage e.g. balancing/ancillary services.  Revenues from these services are set to form an important part of the investment case for green hydrogen projects.

5.Policy focus on scaling not picking winners

Policy makers are currently focused on defining hydrogen support mechanisms that:

• Incentivise competition to drive down costs
• Support rapid scaling
• Allow access to low cost financing
• Facilitate a level playing field i.e. are not technology specific
• Do not impose an unreasonable cost burden on consumers.

The EU and national governments have learnt some key lessons from renewables deployment that will shape their approach to hydrogen. These lessons are likely to support a much faster evolution of hydrogen support mechanisms. Evidence to date points to competitive bidding to access some form of revenue stabilisation & support mechanism e.g. CfD based.

Renewable support mechanisms have the benefit of being linked to a transparent and liquid power price.  This not yet possible for hydrogen, which means an alternative reference is required e.g. related to some transparent measure of hydrogen revenue or level of carbon abated.

Although policies are set to support competition across different production sources, there are likely to be policy mechanisms that act to close the cost gap between green & blue hydrogen. For example:

• green hydrogen may receive additional policy support via reduced network charges and payments for provision of flexibility services
• blue hydrogen will incur higher costs associated with its residual carbon footprint as carbon prices rise.

The details of national support mechanisms that are set to emerge over 2021-22 will be a key catalyst for scaling investment in hydrogen infrastructure.

What are these views based on?

The 5 factors we set out above are based on Timera’s client work on hydrogen across the last 2 years.  It is interesting how broadly and quickly industry interest in hydrogen gas grown.

The problems we are working on with clients illustrate a cross section of industry focus areas. For example:

• renewables investors – electrolyser investment cases & H2 impact on power market evolution
• a global industrial company – decarbonising production supply chains & H2 offtake contract structures
• midstream gas portfolios – threat to existing assets & H2 growth/diversification opportunities
• oil & gas producers – H2 value chain evolution & impact on gas/LNG markets.

It is difficult to overstate the pace at which momentum is building behind hydrogen investment, given clean hydrogen existed largely in the realms of science fiction only 2 years ago.