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TerraThermo Limited
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TerraThermo - Renewable Energy Storage ...

TerraThermo - Renewable Energy Storage and Low Carbon Power Generation

TerraThermo™ develops Renewable Energy Storage and Low Carbon Power Generation projects in Europe by deploying Hot Dry Rock (“HDR”) technologies. We license those technologies best suited for each project and develop our own intellectual property associated with geothermal energy storage and power generation projects. For Projekt THERMO we are partnered with Sage Geosystems Inc to utilize Sage’s EarthStore™ and Battery+™ technologies to develop this first-of-a-kind baseload power generation project.

EarthStore™ Power Generation from Pressure Energy Storage

Geology-independent, short or long duration mechanical pressure storage with round-trip efficiencies 70-75% and capacity of >3.0MW net per well.

Analogous to pumped storage hydropower, Earthstore™ can be installed virtually anywhere, regardless of geothermal characteristics, to provide efficient, cost effective and long-duration energy storage and power generation..

Battery+™ Geothermal Power Generation from Storage

Geology-dependent power generation from geothermal energy storage in which the stored water harvests natural geothermal heat from the surrounding rock which is then used to generate electricity through a binary-cycle power plant. Both the heat and the pressure energy of the water contribute to net electricity generation.

Advancing from Earthstore™, a Battery+™ system can harvest the earth’s heat to enhance performance, efficiency and generate geothermal electricity.

Battery+™ provides potential to 2x energy produced through geothermal heating of injected water.
Round-trip efficiencies up to 200% and capacity of >3.0MW net per well
Geothermal Baseload Power Generation is generated from multiple Battery+™ wells.

Geothermal Baseload Power Generation

By cycling multiple Battery+™ wells in a connected system, Baseload power is sustainably generated.

It is the only scalable solution today that economically scales storage through to geothermal power generation.

Seamlessly alternating between each need without modifications to well or power plant design.

Co-location

We can offer co-location of renewables power generation to convert existing Ground PV, Onshore Wind and Thermal into integrated and scalable baseload renewable power generation plants.

Energy Suppliers

Baseload grid support
Variable arbitrage
Energy increase with Battery+
Power storage for later use
Seasonal storage
Conversion of coal and thermal plants

Transmission System Operators

Grid balancing & stability
Long-duration backup (hours/days)

Geothermal Operators

Converting underperforming or failed hydrothermal/EGS wells if brine flow rates or temperatures not achieved

Ground PV

Variable arbitrage
Energy increase with Battery+
Short or long duration storage
Seasonal storage
Convert to baseload power plant

Wind Farms

Variable arbitrage
Energy increase with Battery+
Short or long duration storage
Seasonal storage
Convert to baseload power plant

Oil & Gas Operators

Repurpose end-of-life wells to storage
Delay abandonment
Decarbonise power supply for operations

Open Loop

Fracturing creates an artificial reservoir

Multiple wells: higher CAPEX/MW

Fractures must connect across multiple wells
Requires continuous injection of large volumes of water at high pressure (700 to 1’000 BAR)
Fluid must disperse evenly across fractures to avoid short circuiting into a single flow channel
Huge parasitic loads from friction pressures

Sage Geosystems Inc.

GEOPRESSURED GEOTHERMAL SYSTEM

Single well: less CAPEX/MW

Off-the-shelf oil & gas drilling technology
Gravity fractures are additive, do not connect across wells
Injection pressures < 350 BAR
Fluid dispersion is not material to design
Scalable from storage (<150°C) to baseload power (>150°C)
Gravity fracture is operated above fracture opening pressure, so parasitic loads from friction are greatly reduced compared to open loop EGS

Closed Loop

Boreholes form a “radiator” shape underground

Single & multiple wells: requires tens of km of well length for sufficient surface area for heat transfer

New technology is needed for complex directional drilling and well completions
No connectivity with surrounding rock, conduction heating only
Lower power output per well than other HDR technologies

We offer storage and power production technologies that are more sustainable and raw material-secure than any other storage or renewable power generation system.

Our energy storage does not rely on critical materials necessary for other renewable storage and energy generation systems.