LAES gains momentum
solutions involve complex business models that demand more than just mechanical
expertise. With its diverse product portfolio, MAN ES is well equipped to
tackle challenges like this and, in the case of LAES, scores highly for its
turbomachinery and grid expertise, not to mention MAN Cryo’s solutions in the
cold department. Deggendorf’s expertise in molten salt storage, for example,
also plays a part.
MAN ES enjoys
excellent relations with HighView Power, which is providing process expertise.
As an LAES pioneer and leading supplier, HighView Power already possesses
extremely good – and above all market-ready – process technologies. LAES
solutions, which are now to be implemented in several projects, are being
developed in collaboration with MAN, though there is serious competition in the
shape of Siemens and GE.
pandemic has not put the brakes on the market for new energy solutions – there
are any number of global projects and the potential is growing. For
MAN ES, the contracts for two LAES projects in the UK and USA are
currently of particular importance. Both countries are extremely interested in
a fast solution, as they already rely heavily on renewables and have
considerable problems with their grid stability. National Grid, the UK’s grid
system operator, would desperately like to avoid any more blackouts. “If we
come out on top and can produce a reference, we can expect a lot more LAES
inquiries and orders,” says Thomas Staude, Head of Sales Solution, Oberhausen.
In order to stabilize
the energy grid in a matter of seconds, the 50 MW systems include what is
called a stability island – implemented using a flywheel in the case of both
projects. This is to be commissioned much earlier as part of a first phase. The
components for the LAES system will be installed in a second phase. In this
way, the grid stabilization service will take care of short-term stabilization
so that the more complex LAES system can be completed in the slipstream.
Drawing on our colleagues in Oberhausen, Berlin and Hamburg made it possible to
offer a complete package with both phases.
efficiency and quickstart capability of the compressor and turbine train over
the installation’s entire lifespan was the key challenge with this new
development,” say Christian Kaiser, Armin Leonhardt and Kolja Metz. Working as
a team and collaborating with design engineer Oliver Myschi and rotor dynamics
specialist Jörg Weiss, they developed the MAN Air Turbine (MAT), which adds air
turbines to the Oberhausen steam turbine build package. The fact that this was
achieved within a few months is down to the support received from colleagues in
the aerodynamics and design disciplines. The result is a modular concept with
which MAN ES will soon be able to present LAES systems with a capacity of
up to 250 MW competitively.
in a nutshell
The expansion of renewable energies means that
peaks in supply and demand are having to be balanced for extended periods of
time to an increasing extent. Liquid Air Energy Storage (LAES) uses
cryogenically liquefied air as a medium for storing energy and is especially
suitable for special applications that require large amounts of energy over a
discharge time of several hours. The technology is also extremely flexible and
can be deployed anywhere. This inexpensive energy storage is the perfect
partner for ‘green energy’, as it does not involve any toxicity and will work
anywhere in the world without limitations. In addition to its excellent economy,
LAES scores highly for sustainability, as the components are designed to last
at least 25 years.
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