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) into hydrogen and oxygen using renewable electricity.
At 500kW, this system is ideal for industrial feedstock, onsite refueling, or grid-balancing applications.
Key Technical Specifications (Typical)
- Production Capacity: Approx. 100–110 (Normal Cubic Meters per hour) of.
- Hydrogen Output: Approx. 9–10 kg/h of hydrogen.
- Purity: 99.999%–99.9999% (High purity suitable for fuel cells).
- Power Consumption: 4.5–5.5 kWh/produced.
- Operating Pressure: Typically 1.0–3.0 MPa (10–30 bar) without a compressor.
- Responsiveness: Instant start-up (<30s) and fast load tracking (10%–100%).
System Architecture
A 500kW PEM plant is usually containerized (often a 20-ft or 40-ft ISO container) and includes:
- Electrolyzer Stack: The core, consisting of multiple cell stacks where PEM technology splits water using a platinum/iridium catalyst.
- Power Supply (Rectifier): Converts AC grid/renewable power to DC for electrolysis.
- Water Purification System: Deionizes feed water to ensure high-grade H2 and protect the stack.
- Gas-Liquid Separation Unit: Separates fromand liquid water.
- Hydrogen Purification System (Optional): Increases purity for sensitive applications.
- PLC/Control System: Allows remote monitoring and automated safety shut-offs.
Core Advantages of PEM for this Capacity
- ⚡ Dynamic Response: Perfectly matches fluctuating solar or wind power.
- 🔒 Safety: No corrosive liquid electrolytes (like KOH in Alkaline systems) — uses solid polymer membrane.
- 💨 High-Pressure Output: Reduces the load on downstream compressors.
- 📦 Compact Footprint: High current density allows for a smaller plant footprint.
Applications
- Small-Scale Industrial Green H2: Steel processing, ammonia production, food hydrogenation.
- Hydrogen Refueling Stations: Suitable for small bus or heavy-duty truck fleets.
- On-Site Power/Energy Storage: Providing fuel cell feed for power generation.
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Web results
Custom 500kw Proton Exchange Membrane Hydrogen ...
Hfsinopower.com
https://www.hfsinopower.com › 500kw-proton-exchange...
Hfsinopower.com
https://www.hfsinopower.com › 500kw-proton-exchange...
Sep 26, 2025 — High Current Density and High-Efficiency Hydrogen Production Square electrolyzers can easily achieve current densities of 10,000 A/m² or even ...Read more
100Nm3/h 500KW 99.999% High-Purity PEM Hydrogen ...
Hefei Sinopower Technologies Co., Ltd.
https://www.hfsinopower.com › Hydrogen
Hefei Sinopower Technologies Co., Ltd.
https://www.hfsinopower.com › Hydrogen
PEM water electrolysis for green hydrogen production, works well with renewable energy power. System mainly includes power supply unit, PLC unit, electrolyzer ...Read more
Web results
A 500 kW hydrogen fuel cell-powered vessel
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
ScienceDirect.com
https://www.sciencedirect.com › science › article › pii
by W Guan2024Cited by 43 — This paper presents the “Three Gorges Hydrogen Boat No. 1”, a novel green hydrogen-powered vessel that has been successfully delivered and is currently sailing.Read more
Web results
HyLYZER® 500 PEM electrolyzer system
Accelera
https://www.accelerazero.com › electrolyzers › products
Accelera
https://www.accelerazero.com › electrolyzers › products
The HyLYZER 500 delivers one of the best efficiencies on the market at 53.2 kWh/kg, which significantly reduces the levelized cost of hydrogen (LCOH), all while ...Read more
Has anyone built a 500kW PEM Stack yet?
Hyfindr Tech Community
https://community.hyfindr.com › forums › discussion
Hyfindr Tech Community
https://community.hyfindr.com › forums › discussion
Oct 11, 2022 — The stack current (500 amps) limits the cell area to around 250 cm2 and the voltage at 1000V. At 1000V, and 0.6V/cell it would mean 1667 Cells.Read more
Proton Exchange Membrane (PEM) Water Electrolysis - PMC
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC11996138
PubMed Central (PMC) (.gov)
https://pmc.ncbi.nlm.nih.gov › articles › PMC11996138
by CR Wang2025Cited by 246 — A proton exchange membrane water electrolyzer (PEMWE) is a promising green hydrogen technology that utilizes electricity to split water into oxygen and hydrogen ...Read more
500 kW Hydrogen Energy Storage Power System
Vision Battery
https://www.vision-batt.com › product › show › post-114
Vision Battery
https://www.vision-batt.com › product › show › post-114
The system uses a custom-developed long-life proton exchange membrane fuel cell stack designed for energy storage. It features the world's first carbon ...Read more
Proton-Exchange Membrane Electrolysis for Green ...
MDPI
https://www.mdpi.com › ...
MDPI
https://www.mdpi.com › ...
by HF Araújo2024Cited by 54 — Green hydrogen (H2) has emerged as a promising energy carrier for decarbonizing the industrial, building, and transportation sectors.Read more
Container Type 100kw 500kw 1MW Green Hydrogen ...
Made-in-China.com
https://greenhydrogen.en.made-in-china.com › product
Made-in-China.com
https://greenhydrogen.en.made-in-china.com › product
Container Type 100kw 500kw 1MW Green Hydrogen Station Water Electrolyzer Plant with Alkaline Electrolytic Cell ; Production Capacity: 200 Units/Year ; Payment ...Read more
Missing: proton exchange membrane