Our Projects

Geothermal Fields

Mantlepower Geothermal is developing and prospecting geothermal fields. The geothermal fields are all high enthalpy energy rich fields of either DeepGeo or MagmaGeo type. We are also constantly looking for acquisition opportunities: specifically operational plants, or developed geothermal wells.


Mantlepower is interested in acquiring plants that we can transform from low- or mid-enthalpy fields to high enthalpy fieds. We are also interested in acquiring discontinued wells in select markets that we can redevelop into high-enthalpy wells.


We are currently planning to build 126.14 TWh of geothermal plants in the following markets; Germany, Greece, Iceland, Italy, New Zealand, Sweden, Tanzania & United Kingdom.

What We Do

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Mantlepower’s analysts have prospected more than 100 sustainable geothermal fields and have selected the 15 best targets, based on geophysical data, local electricity market, democratic stability, and investment climate.

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Building Plants

We develop and build large-scale state-of-the-art high enthalpy geothermal plants for our own geothermal fields. These are plant-wide closed loop installations, ensuring the net-zero release of CO2. All plants are built to produce load-balancing electricity, process heating & hydrogen, optimising efficiency.

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Supplying Energy

Our stated goal is to build sufficient geothermal plant capacity worldwide, in electricity, process heating and hydrogen, to reduce the current global output of CO2 by 10%. Big problems require big solutions.

Welcome to Mantlepower.

About Mantlepower

Need more details? Please see our pages on who we are, what we do and our projects.

Currently a growing team with big plans

Carl Rehnberg

Chief Operating Officer

Geophysicist and volcanologist, former CEO of various companies.

His hobbies include building factories in Africa

Nick Small

Director of Communication

Nick has spent three decades in the broadcast industry as writer, producer and director for the BBC, National Geographic and Discovery among others.

His hobbies include running up volcanoes (and filming them).

Gareth Dale

Chief Technical Officer

Gareth has spent two decades in the IT industry as a webmaster, media developer (content and storyboarding), server and firewall administrator as well as a general IT support role.

His hobbies include playing music (bass guitar) and fishing.

Andreas Caggianella

Member of the Board, Chief Financial Officer & Chief Executive Officer

M.Sc in Sustainability Auditing.

His hobbies include driving motorcycles where no motorcycle was ever intended to be.

Get in Touch

Please use the contact form or contact us using the methods below:

Find us at the office

Mantlepower Geothermal AB
Anckargripsgatan 3
211 19 Malmö

Mantlepower UK
1, Guidepost

Contact Us

Email: contact@mantlepower.com

Contact Us