ENABLING THE ENERGY TRANSITION


ENABLING THE ENERGY TRANSITION

Enhanced efficiency and flexibility for the Combined Cycle of the future

The Energy Transition Combined Cycle is a revolutionary way of combining power production and long duration, large scale energy storage.

Combined cycles will now reach unprecedented gas to power efficiency and at the same time operate in a very flexible way being able to switch from absorbing and storing energy from the grid to full power production in a matter of seconds.

The CO2 ETCC is based on a closed thermodynamic transformation that uses CO2 as a working fluid to produce power and store energy in combination with a gas turbine. The process is based on similar principles of the CO2 Battery but with the main difference that external heat, coming from the exhaust of the gas turbine, is added to the process by means of a boiler.

The CO2 ETCC can operate in four main working modes: Charging, Boost, Super Boost and Fast Response.

In charging mode energy can be absorbed from the grid and stored for later use in the form of liquid CO2, this working condition is ideal to store power during times when energy produced from the grid is available at low cost.

In boost mode the system works as a combined cycle, the Gas turbine is producing power and the exhaust heat from the gas turbine is recovered by means of a CO2 Brayton cycle which produces net power as a difference between the power produced by the CO2 Turbine and the CO2 compressor.

In super boost mode the compressor is shut off and pressurized CO2 is withdrawn from the storage vessels to be expanded into the CO2 turbine after being heated up in the boiler. In this configuration the gas turbine and the CO2 turbine produce power simultaneously exporting power to the grid with a combined cycle efficiency above 80%.

The total power produced in super boost mode is more than double the installed capacity of the gas turbine, this configuration is perfect to benefit from high energy rates during daily peaks. Finally the system can be also adapted to work in fast response mode in order to startup the gas turbine in a matter of seconds without the need to operate the gas turbine in idle mode consuming gas just to keep it warm and ready to ramp-up.

Enhanced efficiency and flexibility for the Combined Cycle of the future

The Energy Transition Combined Cycle is a revolutionary way of combining power production and long duration, large scale energy storage.

Combined cycles will now reach unprecedented gas to power efficiency and at the same time operate in a very flexible way being able to switch from absorbing and storing energy from the grid to full power production in a matter of seconds.

The CO2 ETCC is based on a closed thermodynamic transformation that uses CO2 as a working fluid to produce power and store energy in combination with a gas turbine. The process is based on similar principles of the CO2 Battery but with the main difference that external heat, coming from the exhaust of the gas turbine, is added to the process by means of a boiler.

The CO2 ETCC can operate in four main working modes: Charging, Boost, Super Boost and Fast Response.

In charging mode energy can be absorbed from the grid and stored for later use in the form of liquid CO2, this working condition is ideal to store power during times when energy produced from the grid is available at low cost.

In boost mode the system works as a combined cycle, the Gas turbine is producing power and the exhaust heat from the gas turbine is recovered by means of a CO2 Brayton cycle which produces net power as a difference between the power produced by the CO2 Turbine and the CO2 compressor.

In super boost mode the compressor is shut off and pressurized CO2 is withdrawn from the storage vessels to be expanded into the CO2 turbine after being heated up in the boiler. In this configuration the gas turbine and the CO2 turbine produce power simultaneously exporting power to the grid with a combined cycle efficiency above 80%.

The total power produced in super boost mode is more than double the installed capacity of the gas turbine, this configuration is perfect to benefit from high energy rates during daily peaks. Finally the system can be also adapted to work in fast response mode in order to startup the gas turbine in a matter of seconds without the need to operate the gas turbine in idle mode consuming gas just to keep it warm and ready to ramp-up.

parallax background

The missing link to the energy transition

Thanks to the CO2 ETCC it is now possible to produce power and provide grid regulation services with a fuel to power efficiency of above 80%. In a market that demands ever growing efficiency and flexibility the CO2 ETCC can play a key role becoming the missing link to the energy transition.


Based on actual natural gas and electricity cost the CO2 ETCC is competitive just assuming arbitrage operation, increased IRR are possible by stacking revenues coming from grid regulation services. Thanks to the leading advantages of our technology, on the basis of actual cost projection, renewable based fuels such as hydrogen and synthetic natural gas might soon be competitive with the CO2 ETCC assuring attractive IRR to plant owners and effectively opening the way to the next era of the energy industry.

Hydrogen and renewable fuels made competitive

Power production and energy storage combined

All these services combined allow for a very efficient and flexible combined cycle that can provide the grid with all the regulating services, including power production, making at the same time the best use of the fuel available. Based on actual NG Fuel cost and electricity cost the CO2 ETCC can already provide competitive IRR with the sole arbitrage, increased returns are also possible with revenues stacking by providing fast response, fast ramping and voltage regulation services as well.


Hydrogen made competitive with the CO2 ETCC

Efficiency and Flexibility are the key characteristics of the combined cycle of the future, the CO2 ETCC opens the way for the commercial use of alternative fuels such as synthetic natural gas or hydrogen, competitive IRR can be achieved with sole arbitrage based on Electricity and SNG/H2 cost projection.

CO2 ETCC Bricks

 
 
 

A market with numerous revenues streams available needs a fully customizable solution without forgetting the reliability of standardization.

EnergyDome has developed standardized equipment «bricks» that can be combined together to build the perfect CO2 ETCC. Charging power (Compression), discharging power (Expansion) and storage capacity can be chosen indipendently within a range of standardized solutions in order to optimize the business plan of any specific project

Standarized Bricks can be used to build the perfect solution.

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CO2 ETCC Bricks

 
 
 

A market with numerous revenues streams available needs a fully customizable solution without forgetting the reliability of standardization.

EnergyDome has developed standardized equipment «bricks» that can be combined together to build the perfect CO2 ETCC. Charging power (Compression), discharging power (Expansion) and storage capacity can be chosen indipendently within a range of standardized solutions in order to optimize the business plan of any specific project

Standarized Bricks can be used to build the perfect solution.

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Revenue Stacking

 
 
 

With the continuous increase of grid instability due to the increasing share of inverter based power or unpredictable inertia, grid balancing services become a key factor for a safe and reliable grid operation.

The CO2 ETCC can provide all the frequency and voltage regulation services needed for the reliable operation of the electrical grid assuring for multiple revenues for developers and operators.

 

Revenue Stacking

 
 
 

With the continuous increase of grid instability due to the increasing share of inverter based power or unpredictable inertia, grid balancing services become a key factor for a safe and reliable grid operation.

The CO2 ETCC can provide all the frequency and voltage regulation services needed for the reliable operation of the electrical grid assuring for multiple revenues for developers and operators.

 

CO2 ETCC provides unique advantages by combining Power Production and Energy Storage

1Wide Range of Operating conditions
Charging, Boost, Super Boost and Fast Startup modes all possible within the same power plant
2Enhanced flexibility
From energy storage to full power output and vice versa in a matter of seconds. Delta power to the grid more than doubled with respect to the gas turbine nominal power
3Gas to power efficiency above 80%
Unmatched effiicencies possible thanks to the capability of decoupling power production from auxiliaries consumption
4Possibility of fast response and ancillary services to TSOs
Simple and reliable rotating equipment and limited maximum temperature and pressures enhance the system flexibility, allowing for revenues stacking from grid regulation services
5Gas turbine fast start-up (<1s) without idle mode operation
Fast startup mode operation assures for gas turbine start-up time below 1 second without consuming extra fuel
6Economically viable with the fuels of the future
Enhanced plant efficiency and flexibility make the use of renewable fuels and hydrogen economically competitive