HOELLER Electrolyzer

German engineering helps advancing the topic of hydrogen as a climate-neutral source of energy (FOTO) - Seite 2

day, and with a footprint of 25 x 21 cm. It is about the size of a water
carbonator. At 1,500 full load hours per year, it can produce sufficient
hydrogen to power seven cars or two forklift trucks. A car can be filled up
within three minutes.

Prometheus M - has a power rating of 325 kW, produces 147 kg per day, and with a
footprint of 42 x 29 cm and is therefore about the size of a crate of mineral
water. At 1,500 full load hours per year, it can produce sufficient hydrogen to
power 32 cars, seven forklift trucks or one passenger bus.

Prometheus L - has a power rating of 1.4 megawatts, produces 635 kg of hydrogen
per day, with a footprint of 60 x 48 cm and is therefore about the size of four
crates of mineral water. At 1,500 full load hours per year, the most powerful
PEM stack from HOELLER can produce sufficient hydrogen to refuel 140 cars, 30
forklifts, five buses, two trucks or half a train.

(Prometheus Pictures) (https://we.tl/t-Sg2JjfcYVJ)

Prometheus stacks take up 25 per cent less space

In addition to performance and economy, the low space requirement and reduced
overall weight are decisive competitive advantages. The electrolysis stacks from
HOELLER save about 25 per cent in space and weight, which also makes it
possible, for example, to integrate them into the rotor head of a wind turbine.

HOELLER PEM electrolysis stacks: The technology, innovations and patents behind
them

But what exactly makes Prometheus stacks more economical and efficient than
other electrolysis stacks?

In brief: HOELLER has succeeded in considerably reducing the cost-intensive use
of the precious metals platinum and iridium. This is made possible thanks to an
in-house innovation. By improving the surface structures, the reaction area is
increased - this in turn leads to an increase in the performance of HOELLER
stacks.

In addition, the electrolysis cells have a fundamentally innovative design to
further increase efficiency. Since fewer precious metals are used, production is
also significantly cheaper and possible in large quantities.

Another factor is the achievement of the highest possible output pressure of 50
bar and more to reduce the energy required to compress the hydrogen for storage.

HOELLER is already ahead of some of its competitors in these points but
continues to optimize its PEM electrolysis stacks in order to take a leading
position in this technology going forward.

About HOELLER

With its innovative PEM technology, HOELLER Electrolyzer GmbH is developing the
future source of green hydrogen. The innovative PEM electrolysis stack
Prometheus is the result of more than 25 years of expertise and pioneering work
by engineer, managing director and head of development Stefan Höller. In these
stacks, water is split up into hydrogen and oxygen by adding electricity. This
makes them the core component of future electrolysis or power-to-x systems. With
Prometheus, HOELLER is above all aiming to achieve convincing value for money,
minimized hydrogen production costs, impressive maximum performance, outstanding
service life and high hydrogen output pressure.

Download digital press kit: https://we.tl/t-Sg2JjfcYVJ

Contact:

Matthias Kramer
[phone]
[e-mail]
HOELLER Electrolyzer GmbH
Alter Holzhafen 17 b
23966 Wismar
Germany http://www.hoeller-electrolyzer.com

Additional content: http://presseportal.de/pm/143823/4665834
OTS: HOELLER Electrolyzer GmbH