# Updating global green-hydrogen production costs and configurations under future climates

## TL;DR

This paper examines how climate change affects the cost and configuration of green-hydrogen production globally, finding modest impacts in most regions.

## Contribution

The study introduces a climate-adjusted model to estimate hydrogen costs and configurations under future climate scenarios.

## Key findings

- Climate change could raise green-hydrogen costs by up to 20% in some regions.
- Most locations experience modest impacts on hydrogen costs due to climate change.
- Hydrogen storage requirements may increase by about 20% under future climates.

## Abstract

Meeting global decarbonization targets requires large-scale, low-carbon hydrogen (H2) production around mid-century. A crucial pathway for this production is electrolysis driven by renewables, tying hydrogen production and costs to spatially varying renewable resources. The potential, variability, and complementarity of renewable resources, though, will be affected by climate change. We quantify the impact of climate change on renewable-energy generation for H2 production globally. We use an investment and operations optimization model for hydrogen systems to estimate geographically explicit and regionally aggregated levelized cost of hydrogens (LCOHs) under historical and future climates. We find climate change could raise the cost of green-hydrogen production by up to 20% in some global locations, and about 16% of global locations could see LCOH increases or decreases exceeding 5%. Southeast Asia and Europe in particular see LCOH reductions due to climate change, while North America sees LCOH increase. Most locations, though, see modest impacts of climate change on hydrogen costs. We also find modest cost consequences from climate change for locations with active hydrogen development. Our results highlight the need for proactive investment strategies to accommodate the climatic variations affecting renewable hydrogen production, especially in countries with stricter H2 power-grid import limits and with firm H2 demand for industrial processes.

•Climate change has a modest impact on green-hydrogen costs across most regions.•Costs at high-potential locations change by less than 10% due to climate.•Future climate change increases hydrogen storage requirements by ∼20%.•Weather variability affects hydrogen costs more significantly than climate change.

Climate change has a modest impact on green-hydrogen costs across most regions.

Costs at high-potential locations change by less than 10% due to climate.

Future climate change increases hydrogen storage requirements by ∼20%.

Weather variability affects hydrogen costs more significantly than climate change.