Understanding the Levelized Cost of Hydrogen (LCOH)

Fig.1 - Levelized Cost of Hydrogen Schema

Why LCOH figures diverge, and how to use the metric credibly

The Levelized Cost of Hydrogen (LCOH) is the metric most often used to test whether a given project makes economic sense. It is also one of the most frequently misapplied.

Published LCOH estimates for comparable projects routinely differ by several dollars per kilogram. That dispersion rarely reflects genuine disagreement about technology. In our experience it reflects differences in cost boundary, utilization assumptions, cost of capital, and the treatment of policy support. These are choices that move the result more than the selection between alkaline and PEM electrolysis.

For investors and developers, the useful question is not what a project's LCOH is, but which LCOH is being quoted.

What LCOH measures

LCOH expresses lifetime project costs per kilogram of hydrogen produced, with both costs and output discounted to present value:

where Cₜ is total cost in year t, Hₜ is hydrogen output, and r is the discount rate. Discounting the denominator matters: production weighted to later years contributes less in present-value terms.

Cost components include:

• Capital expenditure (CAPEX): equipment, installation, balance of plant, engineering, permitting, commissioning, owner's costs and contingency

• Operating expenditure (OPEX): labour, maintenance, insurance, administration, and major overhauls such as electrolyzer stack replacement

• Feedstock and utilities (incl. in OPEX): electricity, natural gas, water treatment, and carbon management where applicable

• Financing: reflected through the discount rate or modelled explicitly as debt service and equity return

• End-of-life: decommissioning and asset retirement obligations

Two conventions should always be stated. First, whether the figure is a discounted average cost or the constant selling price required to achieve a target after-tax return — these are different numbers, and detailed models often report the latter. Second, the reporting basis: real or nominal, currency and reference year, asset life, and the physical specification of the hydrogen (pressure, purity, gaseous or liquid).

Where LCOH is used

• Feasibility and benchmarking comparing production pathways, whether electrolysis, reforming with carbon capture, or emerging routes. Note that policy frameworks increasingly define pathways by measured carbon intensity in kg CO₂e/kg H₂ rather than by colour, and analysis should follow suit.

• Investment decisions screening capital allocation and supporting due diligence

• Policy design calibrating incentive levels and programme targets

• Commercial negotiation establishing a cost floor for offtake discussions

Five recurring errors

1. Generic or stale benchmarks. International LCOH literature is useful for orientation, not for underwriting. Electricity price, grid emissions intensity, resource quality, labour rates and financing terms are all local variables. Announced project capital costs also tend to understate installed cost, because they typically precede detailed engineering.

2. Confusing production cost with delivered cost. LCOH conventionally measures cost at the plant gate. Compression, liquefaction, storage, transport and dispensing sit outside that boundary and can rival production cost for dispersed demand. A plant-gate figure and a delivered figure are not comparable quantities.

3. Treating power price and capacity factor as independent. This is the most consequential modelling error we see. The procurement arrangement that delivers low-cost power is generally not the arrangement that delivers high operating hours. Because electrolysis is capital-intensive, reducing utilization spreads fixed costs across far fewer kilograms — and a substantially cheaper electron can produce a higher LCOH once capital recovery is recalculated. Model the operating profile the energy contract actually delivers, then let LCOH follow from it.

4. Incomplete cost coverage. Water treatment, insurance, stack replacement, grid connection and reinforcement, carbon management and decommissioning are commonly omitted. So is the commissioning ramp and performance degradation over life, which reduce net saleable output below nameplate.

5. Reading LCOH as a market price. LCOH is a cost metric. Achievable price is set by demand, competing supply, contract structure and policy. The two coincide only by accident.

Policy support deserves explicit treatment

Incentives materially change project economics and should be modelled transparently rather than netted silently into the cost line. Canada's Clean Hydrogen Investment Tax Credit is a refundable capital credit of 15% to 40% of eligible cost, tiered by assessed lifecycle carbon intensity, with the highest rate reserved for the lowest-intensity production and rates declining later in the decade. Because it is capital-based, it reduces the numerator of LCOH. The U.S. Section 45V credit is production-based and paid per kilogram over ten years, which behaves differently. It is exposed to volume and carbon-intensity verification risk, but scales with output.

Canadian projects may also access Clean Fuel Regulations credit revenue depending on end use. Where this is included, treat it as merchant revenue subject to policy and price risk, not as contracted income.

Our best practice is to present three figures: LCOH before support, LCOH after clearly specified support, and a downside case in which incentive value is delayed or reduced.

Getting it right

Do: fix the reporting basis before modelling; use project-specific inputs; separate binding quotations and demonstrated performance from targets and forward cost curves; model the full asset life including ramp, degradation and outages; run coherent downside scenarios that combine correlated stresses rather than flexing one variable at a time; and disclose assumptions.

Do not: rely on global averages; assume nameplate output; bury incentives in the cost line; or present LCOH without reconciling it to NPV, project and equity IRR, and debt-service coverage. LCOH is an input to an investment decision, not a substitute for one.

How Vaekst can help

We provide project-specific LCOH modelling, benchmarking and policy analysis across Canadian and U.S. incentive regimes, with a focus on the point where technical assumptions become financial outcomes. To discuss your hydrogen project, please contact our team.

To discuss how Vaekst can support your hydrogen initiatives with robust economic analysis and strategic insight, please contact our team.

Contact Vaekst Team