What makes PEM electrolysers reliable in India
- PEM electrolysers respond quickly to fluctuating renewable input, making them well suited to India’s variable solar and wind generation patterns.
- Suitable converters and rectifiers help protect electrolyser stacks from voltage fluctuations, frequency deviations and harmonic distortion.
- Compliance with standards, such as ISO 22734 and relevant IEC 62282 standards, supports safer system design and operation.
- Testing under relevant operating conditions can help indicate how reliably a PEM electrolyser may perform at an industrial site. Endua’s pre-engineered PEM electrolysers, for example, have completed 30,000+ hours of rigorous testing.
- On-site hydrogen production can reduce reliance on external suppliers, transport and bulk delivery, potentially lowering associated logistics risks and costs.
India’s power grid presents specific challenges for electrolyser operation. Cloud cover can cause rapid changes in solar output, while the grid may experience frequency deviations outside its normal operating band. If your organisation is evaluating a PEM electrolyser, its response to these conditions can affect your uptime and production targets.
India’s National Green Hydrogen Mission targets 5 million metric tonnes of annual green hydrogen production by 2030. Achieving this will require significant additions to the country’s renewable energy capacity, although estimates vary depending on assumptions. Meeting this ambition will also depend on electrolyser installation and system reliability under real operating conditions.
Industrial facilities in manufacturing, mining, chemicals and utilities can benefit from hydrogen systems that maintain consistent output, despite grid variability.
How PEM technology responds to variable power input
Proton exchange membrane electrolysers operate differently from alkaline systems when paired with intermittent renewable energy. PEM stacks can increase or reduce production within seconds to match changes in solar and wind generation. This dynamic response makes PEM technology particularly suited to hydrogen projects powered by renewable energy.
The electrochemical characteristics of PEM systems allow them to operate across a wide load range. This flexibility allows production to continue when renewable generation falls below peak output.
At an industrial facility in Gujarat or Rajasthan, for example, this flexibility allows electrolysers to keep using the solar power available during partial cloud cover.
When assessing this capability, project teams can look for systems tested under fluctuating energy profiles. Endua’s PEM electrolyser stack design, for example, has undergone thousands of hours of benchmarking under constantly changing energy profiles. This testing reflects the variable conditions common to renewable energy projects across the Asia-Pacific.
What power quality parameters affect electrolyser performance
Power quality can influence how reliably a PEM electrolyser operates. PEM stacks need a steady, clean DC supply. How the incoming power is converted and conditioned has a direct effect on how consistently the stack performs and its lifetime.
Three characteristics of the supply are most important, including:
how stable the voltage is
how well the frequency holds
how much electrical noise, known as harmonic distortion, is present.
Where grid supply is variable, all three can place extra strain on the stack and the equipment around it, unless the system is designed to absorb them.
Most of this protection comes from the power electronics that convert grid AC power into the DC the stack runs on. Well-specified equipment smooths out fluctuations before they reach the stack. This reduces wear and helps the stack reach its rated service life, which is typically 60,000 to 80,000 operating hours depending on how it is run. Stack manufacturers set limits on the power quality their equipment can tolerate. Designing the installation to stay within those limits is one of the simplest ways to protect the investment.
Choosing this equipment also involves a trade-off. Some options are most efficient at full load. Others perform better when the system runs below capacity, which is common when an electrolyser follows renewable generation. The choice affects running costs as well as reliability, so it’s worth considering how the electrolyser will be operated when selecting this component.
Which safety standards apply to industrial electrolyser installations
Hydrogen is flammable at concentrations of 4–75% (in air, by volume) and can auto-ignite at temperatures above 500°C. Industrial electrolyser installations are generally assessed against a combination of international standards and local safety requirements. These may include ISO 22734 and relevant IEC 62282 standards, together with requirements covering site approval, installation and operation.
Did you know?
In Australia, the Hydrogen Safety Code of Practice establishes requirements for system approval and operation. Endua’s demonstration system was the first of its kind to be approved under this code in June 2023. The electrolyser includes gas monitoring devices and complies with relevant Australian Standards, including AS 22734:2020.
India’s regulatory framework for hydrogen is still evolving. The Petroleum and Explosives Safety Organisation and the Oil Industry Safety Directorate have begun adapting global norms. If you’re evaluating an electrolyser supplier, you can ask for evidence of compliance with IEC and ISO standards, along with current Indian requirements.
How deployment architecture affects reliability
Industrial hydrogen projects generally use one of two deployment models: centralised production with distribution or on-site generation. Each model presents different reliability considerations for operations in India.
Centralised production
Centralised plants are often built close to large solar or wind resources, so they avoid many weaknesses of the electricity distribution network. The trade-off comes after the hydrogen is produced. It has to be compressed, stored and transported to the operator, usually by road, and each step adds cost and another point where supply can fail. Delivery delays are a particular risk for remote sites and for operations where production depends on hydrogen arriving on time.
On-site generation
On-site generation can reduce reliance on these external systems, allowing operators to maximise use of their own renewable energy assets and remove significant complexity from the construction of the electrolyser. Endua’s pre-engineered systems, for example, can reduce a months-long installation process to a matter of hours, which may help limit construction delays and unexpected costs. At Archerfield Airport, Endua put this rapid-deployment approach into practice and demonstrated reliable remote operation of the electrolyser system.
On-site production can also reduce reliance on third-party suppliers and exposure to changing logistics costs. This may benefit remote mining operations, agricultural facilities using backup power and manufacturers integrating hydrogen into existing processes.
What maintenance requirements support consistent uptime
Industrial electrolyser reliability depends on preventive maintenance, spare-parts availability and remote monitoring. Commercial systems generally include these capabilities in their base configuration, instead of treating them as optional additions.
Endua systems, for example, include remote communication capability as standard. The monitoring dashboard displays operational information and supports remote performance monitoring and control. Cloud-based monitoring lets your team track hydrogen production remotely while focusing on day-to-day operations.
Factory testing can evaluate performance before the equipment reaches your site, which can reduce the commissioning work required to achieve specified outputs.
How regional conditions in India influence equipment selection
India’s diverse geography creates varied operating environments for hydrogen systems. Facilities in Rajasthan face extreme heat and dust. Coastal installations in Gujarat encounter salt air and humidity, while mining operations in remote regions may experience altitude variations and limited access to infrastructure.
Testing equipment under conditions similar to those at your site can provide a clearer indication of how it may perform. When evaluating a system, it can also be useful to consider the research, testing and regional experience behind its development.
For Endua, this includes a Southern Hemisphere testing programme that assesses our proprietary PEM stack design in various environmental conditions. Endua’s technology development partnership with CSIRO draws on 19 years of PEM electrolysis research, alongside manufacturing in Brisbane and experience across the Asia-Pacific to prepare systems for demanding industrial environments.
Evaluating the total cost of reliability
The equipment purchase price is only one part of hydrogen system economics for your organisation to consider. Uptime, maintenance costs, stack replacement frequency and energy efficiency all influence the total cost of ownership over a project’s life.
Systems with higher availability can produce more hydrogen for each dollar of capital invested.
If your facility has contracted hydrogen offtake or production targets linked to decarbonisation commitments, this difference can affect revenue and compliance outcomes.
Endua’s approach to reliability centres on three elements:
pre-engineered design that can reduce uncertainty associated with custom engineering
factory testing before shipment
rapid deployment that can limit the time available for site-related delays and complications.
Together, these elements and more than 30,000 hours of operational testing support a commercially deployable hydrogen system for industrial use.
How Indian industrial operations can select reliable PEM electrolysers
To select a reliable PEM electrolyser for an industrial site in India, consider grid conditions, safety requirements and deployment constraints.
The dynamic response of PEM technology helps manage changes in renewable energy input. Suitable power-conditioning equipment helps protect stacks from variations in grid quality, while compliance with relevant international safety standards supports safer system operation.
On-site production can reduce exposure to some of the supply chain risks associated with centralised hydrogen delivery. A pre-engineered, factory-tested system can also simplify installation and reduce deployment risk. Evidence from real-world hydrogen projects can demonstrate how the equipment performs under operating conditions.
Consider Endua’s pre-engineered PEM system, which is factory-tested before delivery, has undergone extensive testing under variable energy profiles and includes remote monitoring so operators can track hydrogen production during day-to-day operation.
Get in touch with Endua to discuss your site requirements and how our PEM electrolyser technology can support your hydrogen production and decarbonisation goals.
FAQs about PEM electrolyser reliability in India
What makes PEM electrolysers suitable for India’s variable renewable energy?
PEM electrolysers can increase or reduce production within seconds to match changes in solar and wind generation. Their dynamic response supports operation from start-up to 100% of rated capacity, allowing the system to use available renewable energy during partial cloud cover or changing wind conditions.
Endua’s PEM electrolyser technology, for example, has undergone thousands of hours of testing under constantly changing energy profiles. This testing assesses its performance under the variable conditions associated with renewable energy integration.
How do grid frequency deviations affect electrolyser performance?
Grid frequency deviations exceeding 0.5 Hz can place stress on electrolyser components without suitable power conditioning. DC ripple above 5% can also accelerate stack degradation.
High-frequency interleaved DC-DC converters can reduce ripple to below 1%, which may help extend stack life. Rectifier selection also affects energy efficiency and power factor performance.
What safety standards apply to industrial electrolyser installations?
Safety standards for industrial electrolysers cover equipment design, installation and operation. Systems designed and certified against recognised standards, such as ISO 22734 and relevant IEC 62282 fuel‑cell/electrolyser standards, give project teams a clear basis for assessing compliance with applicable Indian requirements.
Endua's electrolyser is designed to comply with relevant regional and international safety standards. This approach gives Indian project teams the required information to assess alongside national and local approval requirements.
Why does on-site hydrogen production improve reliability?
On-site production can reduce reliance on external suppliers, hydrogen transport and bulk storage. Endua’s on-site hydrogen systems can reduce reliance on third-party suppliers and give your organisation greater control over production volumes and timing.
How quickly can PEM electrolyser systems be deployed?
Pre-engineered, factory-tested systems can significantly shorten deployment timelines compared with custom-engineered installations. Endua’s pre-engineered design can reduce a months-long installation process to a matter of hours. Our Archerfield Airport project demonstrates this rapid-deployment approach, with installation completed in hours.