Fig. 1: Hydrogen production and conversion by the PGP system with low-carbon generation expansion paths for a fossil fuel-reliant power sector. | Nature Communications

Fig. 1: Hydrogen production and conversion by the PGP system with low-carbon generation expansion paths for a fossil fuel-reliant power sector.

From: Assessment of carbon-abatement pricing to maximize the value of electrolytic hydrogen in emissions-intensive power sectors

Fig. 1

a Hydrogen produced using excess renewable energy or through price arbitrage, stored underground, and converted to electricity via a fuel cell for grid dispatch if competitive (the black and green arrows represent electricity and hydrogen flows, respectively, and n is an integer (greater than or equal to 0) that denotes the number of PGP system installations). The PGP system’s role in the power sector hinges on the generation expansion strategy for emissions reduction. b Electricity generation capacity shares (stacked bars) and emission factors (line chart) for the modelled high renewable energy (HighRE) and high natural gas (HighNG) grid types between 2020 and 2050. Supplementary Tables 1 and 2 provide the region-specific data considered to derive the long-term generation expansion capacities for each grid type in b.

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