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The CAES system is unique as a network storage, enabling long-term storage, similar, for instance, to a hydraulic power unit, but with a competitive edge in the form of being located in places where it is required for the networks, which means available network units can be used as intended when it is necessary to put off transmission or replace the units that use non-renewables. While the way that the technology works is closely comparable to that of a gas unit, the former is emission-free. CAES is also more cost-efficient as compared to other energy storage capacities with a 50-year lifespan and is ideal for ensuring there are resources required for decarbonization of the network that can be stored for a prolonged period of time. Into its systems XT Energy incorporates both already existing and reliable engineering developments (for instance, underground storage of natural gas) and ready-to-use equipment and technologies of a unique configuration. So, in a unique manner CAES of XT Energy manages to secure cost efficiency both for the traditional and renewable energy without the need for state support, as well as to achieve a major decrease in emissions and to improve environmental safety for countries and regions. XT Energy is also working on a number of long-term technologies. The expected imbalances in energy markets and the resulting need for storage capacities in China and abroad stand at a few gigawatt- and terawatt-hours. That is why XT Energy employs a series of schemes to work according to so that most regions can see successful implementation of extensive storage technologies.


How does it work?

Conversion of electricity into compressed air 

Excess electricity from the grid or the source of renewable energy is used by the compressor, which produces heated compressed air.

Capture heat in thermal storage

Heat is obtained from the air current to be stored in the thermal storage facility, so energy is kept for usage at later stages of the cycle. Total efficiency increases due to this adiabatic process, while the need for fossil fuel is eliminated.

Transportation of compressed air to underground storage

Heated air is moved to a specially built underground storage facility, where stable pressure is achieved and maintained through the use of a hydrostatic system.

Conversion of compressed air to electricity

Hydrostatic pressure is applied to push air to the surface, where re-combination with accumulated heat takes place as well as transmission via the turbine for electricity generation.


CAES XT is an energy storage unit that comes with a long service period and synchronized electricity generation and eliminates emissions into the atmosphere. The technology ensures more flexible setting as compared with a hydraulic system or usual CAES, with alternating power securing load distribution. The system parameters, including charge, discharge and storage capacity, are standard, so complying with the requirements under the clients’ projects is not problematic. Capital investments can be much lower for CAES XT than for other energy storage technologies. At the same time, compared to competitors’ technologies, CAES XT has a number of distinct advantages bringing down costs and extending the equipment lifespan:
• Absence of emissions and of need for fuel and chemicals.
• Long service period (50+ years of unlimited cycle).
• Smaller necessary storage volume as compared to traditional CAES systems.
• Small size of the station, making it high-yielding along with close location to the electrical grid. 
• Existing infrastructure facilities, namely stopped fossil plants and old mines with possible rehabilitation and conversion amid lower investments.
As business across the globe is moving towards the target of 100% carbon-free electricity in the long run, long-term storage capacities will be needed to integrate the increasing use of renewables and to make sure there are alternatives to meet peak demand without consuming fossil fuels. Project CAES XT is a cost-efficient emission-free option that allows installation of new, environmentally friendly capacities and integration of large volumes of renewable energy resources.


Other CAES

Size (MW)



Duration (hours)



Round-Trip Efficiency






Life cycle (cycles)



CAPEX ($/kW)

$1,500- $3,000

$1,500- $2,500+

Operating Costs


High (fuel costs)

Siting Flexibility


Low (salt, emissions)

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Photovoltaic panel production

The sunlight that reaches the earth in the space of one hour could be enough to set the whole world in motion for as long as one year. Solar energy differs from fossil fuel-based energy in the way that there is no necessity for substantial capital investment and fossil fuel production. These days, anyone can make use of the abundant sunlight by installing photovoltaic panels at home. This helps slash monthly electricity costs and reliance on the electrical grid. This power independence gives protection against rising electricity tariffs and unstable prices for fossil fuels. As analysts expect electricity tariffs to keep increasing, solar energy is a cost-efficient solution and long-term investments in the future. Unlike fossil fuel-based energy, solar energy involves no harmful emissions of carbon dioxide. Sustainable environmental solutions including the use of carbon-free energy, solar energy in particular, are instrumental in slowing the rate of climate change.


How does it work?

Solar energy is captured

Photovoltaic cells absorb solar energy and convert it into direct current.

Direct current is converted into alternating current

An inverter converts direct current output of a solar panel into alternating current, which is used by equipment in most cases.

Electricity is sent to the grid

The generated electricity is directed to the grid, where it is distributed among consumers. 


Excess electricity

Excess electricity produced by solar panels is stored with the use of the CAES technology. 


XT400 is the only solution satisfying all the requirements under solar energy projects. Our commercial solar panel option includes a wide range of functions developed to maximize photovoltaic cell efficiency and ensure optimized modernization, retooling and maintenance for all of your infrastructure facilities. Solar panel XT400 with a capacity of 400 W is produced from quality Grade А single-crystal elements. The use of the elements produced according to the PERC technology means our panels have a higher energy conversion efficiency as against standard panels. Besides, the panel is made applying the technology that helps soften the negative impact of partial module shading. Panels XT400 keep working efficiently even when there is diffused sunlight.  With the help of an integrated tracker, energy amounts can grow by up to 30%. XT400 has been devised to ensure our clients have everything they need for a highly adaptable, productive and cost-efficient solar panel. Thanks to our system balance, XT400 is far more than just a choice of your inverter, modules and trackers together with their specifications. 


The other panel in this grade

Peak electric power (Pmax)

400 W

370 W


0 ~ +5 W

0 ~ +5 W

Nominal voltage (Unom)

24 W

24 W

Voltage at Pmax (VMP)

41.6 V

36.5 V

Current at Pmax (Im)

9.62 A

8.71 A

Open-circuit voltage (Voc)

45.5 V

40.73 V

Short-circuit current (SC)

8.1 A

10.1 A

Maximum system voltage

IEC: 1000

UL: 600 V

Operating temperature range

From -40℃ to +85℃

From -40℃ to +85℃

Element's energy conversion efficiency



Module's practical energy conversion efficiency



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