This data-file tabulates the greatest challenges and focus areas for harnessing deep geothermal energy, based on reviewing 30 recent patents from 20 companies in the space.
The economic opportunity is exciting, with levelized costs of 10c/kWh in areas of ordinary geothermal gradients. Strong progress is also outlined in our deep-dive research note into the topic.
The patents confirm that the largest challenges are drilling long multi-lateral wells, which contact sufficient reservoir volumes to transfer heat from the subsurface into the working fluids, without depleting the geothermal resource.
Recent advances from the unconventional oil and gas industry are likely to be a crucial enabler from deep geothermal, based on the comments made in the patents.