Services – Green Energy Geothermal

PT Green Energy Geothermal

OUR SERVICES

Need Our Service?

Looking to optimise performance or streamline operations?
We’re here to help you find the right solution.

Contact UsContact Us

POWER PRODUCTION

In the power production category, GEGI presents three state-of-the-art modular geothermal power plants, each accompanied by their respective subsystems:

NG120 (12 MW)
NG60 (6.0 MW)
NG75bp (7.5 MW)

Our core product line centers around modular well-head power plants, constituting a substantial component of the total design investment. The flexibility of our design allows seamless adjustments to accommodate deviations from the standard conditions, ensuring adaptability to varying parameters.

The NG60, being the initial design, has undergone continuous development, making it the most extensively engineered power plant among the offerings. As for the NG75bp, it shares its fundamental design with the NG120, but with the cooling system removed and specific modifications implemented to enable its operation as a back pressure power plant.

The NG75bp, as stated before, is in essence the NG120 with its cold end removed and an exhaust stack for turbine steam exhaust.

The NG75 can be supplied with a dedicated 7.5 MW back pressure turbine, or a 6.7 MW modified 12 MW unit from an NG120 plant that can be converted back to a condensing unit at a later date.

The NG60 is a 6.0 MW gross wellhead power plant configurable with 4 different cold end configurations like the NG120. The configurations are the condensers and vacuum system as for the NG120:

Direct Contact Condenser
Surface Condenser

Depending on the condenser configuration, the cooling water pump types and configuration changes as well. For the vacuum system we have:

Ejector Type Vacuum System
Liquid Ring Vacuum Pump

The NG60 can operate in tandem with an ORC type power units as well utilizing the brine and/or excess steam.

The NG120 is a 12 MW gross wellhead power plant configurable with 4 different cold end configurations. The configurations are the condensers and vacuum system, for the condensers we have:

Direct Contact Condenser
Surface Condenser

Depending on the condenser configuration, the cooling water pump types and configuration changes as well. For the vacuum system we have:

Ejector Type Vacuum System
Liquid Ring Vacuum Pump

The NG120 can operate in tandem with an ORC type power unit, utilizing the brine and/or excess steam as the case may be.

POWER DISTRIBUTION

The company has developed two modular step-up-stations, the SA8 and the SA37.

The SA37 step-up station is specifically designed to facilitate the voltage step-up process for multiple well-head power plants. This modular station offers scalability and modularity, ranging from 15 to 120 MW and up to a dispatch voltage of 240 kV. It is constructed with two transformer setups, with the option to populate either one or both. The SA37 step-up station can efficiently service up to:

8 NG120 Well-head Power Plants
16 NG60 Well-Head Power Plants

Providing reliable power transmission capabilities. The design of the SA37 step-up station encompasses all essential elements, including civil works, mechanical components, and electrical designs. Moreover, the control system of the station incorporates certain ancillary and auxiliary system designs shared with the control system design of the power plants. This integration ensures a cohesive and synchronized operation between the step-up station and the connected well-head power plants, enhancing overall system efficiency and performance.

The SA8 mobile 3.2 step-up-station is designed for temporary and/or permanent applications in the output range of 8-16 MVA @ 20-60 kV. Its primary design goal was to step-up the company’s wellhead plants 11 kV supply voltage to a medium voltage local network of up to 70 kV. It can be configured to service a:

Single NG120 wellhead power plant
Single NG75bp wellhead power plant
Single NG60 wellhead power plant
Two NG60 wellhead power plant

The step-up-station is mounted on a 40’ ISO container skid for mobility and ease of mounting where it is to be used. It is designed as a self-containing unit with all its features build in to and on to the skid, such as oil trap, breakers, and controls. As the design is relatively flexible, it can be configured for different input voltage to be used as an emergency step-up-station for multiple generators during disaster relief or as emergency power hub.

PROCESS APPLICATION

Considerable effort has been put into generating computational models or applications with defined user inputs for determining power plant output under different environmental and load conditions for different plant setups. The model plant setups are a:

Single flash steam cycle
Double flash steam cycle
ORC cycle
Back pressure cycle
A mix of all

The models are also with different internal component setups:

Ejector vacuum system
Liquid ring vacuum pump
Direct contact condenser
Surface condenser

The models are constructed with the characteristics of the components from our preapproved vendors build in. These models make it simpler and easier to analyse different operating scenarios for or plant designs under.