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World’s largest green hydrogen project — China's 260MW
Kuqa facility
To be commissioned at the end of May
May 26,
2023
By Leigh Collins and Xu Yihe in Singapore
![](images/images_06_07_2023/pic1.jpg)
The ceremony that marked the start of
construction at the 260MW Kuqa green hydrogen project, back in
December 2021.Photo: Sinopec
But questions remain about how green Sinopec’s
project will truly be, as only 300MW of solar power has been built to
supply it
The world’s largest green hydrogen project — the
260MW Kuqa facility in Xinjiang, northwest China — is to be
commissioned at the end of May, with commercial operation scheduled to
begin on 30 June, according to its developer, Chinese state-owned oil
giant Sinopec.
It will overtake the current world leader, a
150MW project in northern China owned by Ningxia Baofeng Energy,
although Kuqa’s reign as the largest green hydrogen system in
operation will not last long.
Another Sinopec project that is about a third larger is already under
construction in Ordos, Inner Mongolia, China, but it is not known when
that will be completed (see below), and the company has also announced
a ¥20bn ($2.8bn) green hydrogen project in Inner Mongolia that will
pump 100,000 tonnes of H2 a year through a new 400km pipeline to
Beijing.
The green hydrogen produced at the ¥3bn ($425m)
facility in the city of Kuqa will be sent by a pipeline to a nearby
oil refinery operated by subsidiary Sinopec Tahe Refining and Chemical
Company, where it will replace grey hydrogen made from unabated
natural gas. H2 is used in oil refineries to remove sulphur from crude
oil and to produce petrochemicals.
A storage tank able to store 210,000 cubic metres of hydrogen will be
used at Kuqa to ensure a steady stream of H2 along the pipeline, which
is able to transport 28,000 cubic metres per hour, while the project’s
13 electrolysers have been supplied by three local manufacturers —
Longi, Peric and Cockerill Jingli Hydrogen, which is now 100%-owned by
Belgium’s John Cockerill.
"A general rule of thumb is that
green hydrogen projects require roughly 2MW of renewable energy for
every 1MW of electrolysers"
But questions remain over how green the hydrogen
produced at Kuqa will truly be.
The original proposal for the project, unveiled in 2021, declared that
it would be powered by a 1GW solar farm, and last June the array was
said to have been downsized to 361MW, according to research house
BloombergNEF.
In a private report to its subscribers last summer, BNEF said that a
361MW plant would only provide 58% of the electricity needed to meet
the electrolysers’ 1,060GWh annual power requirements, with the rest
needing to be sourced from the local coal-reliant grid.
BNEF said at the time that Sinopec was then planning to negotiate with
the local grid operator for the remaining 42%, but that its
commitments thus far had been “vaguely described by Sinopec to be from
nearby wind farms or other clean power sources”. If any
fossil-fuel-fired power is used to produce hydrogen at Kuqa, the
output cannot be said to be “green” or “renewable”.
A general rule of thumb is that green hydrogen projects require
roughly 2MW of renewable energy for every 1MW of electrolysers to
account for the variability in wind and solar output.
Sinopec plans to produce more than two million tonnes of green
hydrogen annually by 2025, its executives have previously stated, with
gigawatt-scale projects in the pipeline.
The Ordos project
Sinopec has not revealed the electrolyser capacity of the Ordos
project, only that it will produce about 30,000 tonnes of hydrogen per
year.
The Kuqa project will produce roughly 20,000
tonnes annually, which suggests Ordos will have a capacity of about
390MW, although the latter project will apparently be powered by 450MW
of wind and 270MW of solar, according to Chinese media.
But as wind tends to blow more strongly at night than during the day,
such hybrid projects are expected to produce more electricity over a
24-hour period than those relying on solar power alone, which could
mean that a smaller capacity of electrolysers would be required.
The Ordos project will include 288,000 cubic metres of hydrogen
storage, as well as a pipeline to deliver the H2 to its main customer,
the Zhongtian Hechuang Ordos Coal Deep Processing plant, which
currently uses the dirtiest form of hydrogen (made from unabated coal)
to produce synthetic chemicals, Sinopec said in February when
construction began.
Xu Yihe is a Singapore-based reporter working for Hydrogen Insight's
sister oil & gas publication, Upstream.
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