What is the potential of geothermal energy for oil and gas innovators?

  • August 01, 2024

Meeting climate goals will require innovation on many fronts. Shortfalls in power generation capacity, infrastructure, energy storage capacity, critical materials and funding are among the obstacles governments, utilities and businesses are working to overcome as they pledge to significantly reduce carbon emissions.

Our latest whitepaper explores the challenges and opportunities of one potentially significant contributor: Geothermal energy.

The appeal of geothermal is enormous — and so are the technical hurdles to generating that power at scale. Unlike solar and wind, thermal power drawn from beneath the earth's surface is always on, always abundant. But so far, taking advantage of that power has proven technically challenging, with geothermal energy accounting for just 0.4 percent1 of total electric generation. Nearly halfof that capacity came online in the 1980s after a federal law authorized loans that could be canceled if potential reservoirs proved unsuitable for development.

With exploration and drilling expertise, the oil and gas industry is a natural fit to dig into geothermal. Indeed, many geothermal startups are led by former oil and gas professionals, and there have been preliminary efforts to assess how easily existing oil and gas wells could be converted to geothermal. So far, companies have generally used conventional shallow drilling techniques to tap hydrothermal resources, typically in areas near geysers or hot springs.

To scale up, companies must expand beyond limited geographies and drill at much deeper depths. That creates a new set of challenges — and opportunities — for innovators in the space.

Above others, the biggest challenge to overcome is the cost of drilling geothermal wells, even at scale. Financing was difficult even before interest rates rose. Now it’s even more so. But current innovations in drilling have the potential to dramatically reduce the capex cost of installing deep geothermal wells, introducing the possibility of producing geothermal energy anywhere on earth.

Tools that can withstand the higher temperatures and depths that come with geothermal drilling must be developed. For most jobs, water would need to be sourced, adding cost. Among a series of promising next-gen technologies, leading startups are developing methods for well-drilling, construction and energy extraction that allow for extremely deep wells in ‘superhot rock’ at temperatures of 750 degrees Fahrenheit. Those deep wells can generate power at 5 to 10 times the rate of traditional hydrothermal wells.

Until recently, there was no map of priority locations for geothermal drilling. But Project InnerSpace, a nonprofit focused on advancing geothermal power, has begun to release modules in 2024 to help guide drilling. Companies that seek to drill must be alert to increased seismic risk and to state and national regulations that may ban geothermal methods that rely on fracking.

Geothermal professionals face a more burdensome permitting process for geothermal wells compared to oil and gas wells. There are no overarching federal regulations on ownership of subsurface resources and states vary greatly in how they define geothermal and assign rights.

To encourage risk-taking and innovation, governments may need to provide tax credits, loans or other incentives. Such incentives helped spark major advances in horizontal drilling and hydraulic fracturing during the shale boom. One caveat, however: That boom happened in an era of low interest rates and easy credit for oil and gas companies — and at a time when the market rewarded growth rather than returns and dividends.

Will geothermal gain a more substantial foothold in the industry? That will depend not only on potential technological advances in drilling, but on whether the industry can meet its net-zero emissions goals through increased carbon capture and storage. The industry is already spending far more on those carbon capture, utilization and storage efforts than on geothermal. One option for industry leaders looking to hedge their bets on the viability of large-scale carbon capture may be pursuing strategic partnerships with next-gen geothermal tech companies.

1Source: U.S. Energy Information Administration, Electric Power Monthly, Tables 1.3.B and 1.16.B, April 3, 2024, preliminary data for the United States.

2Source: U.S. Energy Information Administration, Form EIA-860M, Preliminary Monthly Electric Generator Inventory

 

Does geothermal energy represent an opportunity for an oil and gas industry reinvention?

Download full whitepaper (PDF of 584.82kb)

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Reid Morrison

Reid Morrison

Global Energy Advisory Leader, PwC US

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