Geothermal Energy Draws New Investment as Demand for Clean Firm Power Rises

Geothermal energy is moving from a niche renewable resource to a serious contender in the race to supply clean, reliable electricity for power-hungry grids. Long associated with volcanic regions, hot springs, and countries such as Iceland, the sector is now attracting fresh capital as developers apply advanced drilling, reservoir engineering, and subsurface monitoring to reach heat resources that were previously uneconomic or inaccessible.

The renewed interest comes at a time when electricity demand is rising quickly. Data centers, artificial intelligence, electrification of transport and heating, and industrial reshoring are increasing pressure on power systems. Solar and wind remain central to decarbonization, but their output varies with weather and time of day. Geothermal offers a different value proposition: low-carbon power that can operate continuously, making it attractive to utilities and large corporate buyers looking for clean firm electricity.

Why Geothermal Matters for Clean Power Systems

Conventional geothermal projects use naturally occurring hot water or steam reservoirs to generate electricity. These resources are commercially proven but geographically limited, often concentrated near tectonic plate boundaries or volcanic activity. Enhanced geothermal systems, known as EGS, seek to change that by creating or improving underground reservoirs in hot rock.

In an EGS project, operators inject fluid under controlled conditions to open fractures, circulate water through the hot formation, and bring heated fluid back to the surface to drive turbines. This approach could allow geothermal power to expand beyond traditional hydrothermal regions and become available in a much wider range of locations.

That wider geographic potential is central to the current wave of interest. The United States currently has only a small share of electricity capacity from geothermal power, but federal and research estimates point to much larger long-term potential if next-generation systems become commercially competitive. For grids trying to decarbonize while maintaining reliability, geothermal could provide firm capacity that complements wind, solar, batteries, nuclear and transmission expansion.

Oil and Gas Technology is Changing the Economics

The technology is benefiting from oil and gas expertise. Many next-generation geothermal companies are using tools developed for shale drilling, including horizontal wells, improved drill bits, high-resolution reservoir modeling and fiber-optic sensing. These methods can help reduce drilling time, improve reservoir control and lower the uncertainty that has historically made geothermal projects difficult to finance.

This transfer of skills and equipment is one reason investors are paying closer attention. The geothermal sector does not need to invent every part of its industrial base from scratch. It can draw on decades of experience in drilling, subsurface mapping, well completion and project management.

However, geothermal economics remain challenging. Drilling is expensive, and developers must often commit large amounts of capital before they fully understand the quality of the underground resource. A failed or underperforming well can materially affect project returns. This makes risk reduction, repeatable drilling performance, and reliable subsurface data critical for the sector’s growth.

Data Centers and Corporate Buyers are Creating Demand

Corporate procurement is becoming an important market signal. Technology companies with large data center portfolios are seeking electricity that is not only renewable on an annual basis, but available every hour of the day. This is particularly important as artificial intelligence and cloud computing increase demand for constant, high-quality power.

Google has been one of the companies supporting geothermal power as part of its 24/7 carbon-free energy strategy. In Nevada, Google-backed agreements have helped support new geothermal procurement linked to data center operations. These types of deals are important because they can provide developers with long-term revenue certainty, helping projects move from demonstration to commercial scale.

For utilities, geothermal also offers potential grid value. Unlike solar power, which peaks during daylight hours, or wind power, which depends on weather conditions, geothermal plants can operate continuously. This can help meet evening demand, reduce reliance on fossil fuel peaker plants and support grid stability as variable renewable energy grows.

Potential Beyond Electricity

Although electricity generation receives much of the attention, geothermal energy can also support wider decarbonization. Direct-use geothermal heat can serve buildings, district heating networks, greenhouses, industrial facilities and other thermal applications. In some cases, geothermal heat could reduce dependence on fossil fuels for low- and medium-temperature heat demand.

There is also growing interest in extracting critical minerals from geothermal brines. Some geothermal reservoirs contain lithium and other minerals that could support battery supply chains. If commercially viable, this could create additional revenue streams for geothermal developers and strengthen domestic supply chains for clean energy technologies.

For industrial users, geothermal could become part of a broader clean energy procurement strategy. It may help companies reduce exposure to fossil fuel price volatility, improve the credibility of decarbonization claims and secure reliable low-carbon power for operations that cannot easily pause or shift demand.

Barriers Remain Significant

Despite the momentum, geothermal still faces major obstacles. Exploration risk remains one of the biggest barriers. Developers need to understand underground temperature, permeability, fluid flow and rock characteristics, but much of this information is uncertain until drilling begins.

Enhanced geothermal systems also raise concerns about induced seismicity. Creating or stimulating underground reservoirs can cause small earthquakes if not carefully managed. Strong monitoring, site selection, regulatory oversight and transparent community engagement will be essential, particularly as projects move closer to populated or industrial areas.

Permitting can also slow development. Geothermal projects may require approvals for land access, drilling, water use, grid interconnection and environmental review. In regions where geothermal is less familiar to regulators and local communities, developers may face additional delays or uncertainty.

Financing is another challenge. Next-generation geothermal often sits between venture capital and traditional infrastructure finance. Projects are too capital-intensive for many early-stage investors, but still too technologically risky for conservative infrastructure funds. Public funding, loan guarantees, risk-sharing tools and long-term power purchase agreements could help close this financing gap.

Implications for Net-Zero Strategies

For companies and governments working toward net-zero targets, geothermal’s appeal lies in its ability to provide clean firm power. It does not replace wind and solar, but it can make a renewables-heavy grid more reliable. This matters as more sectors electrify and as companies face greater scrutiny over the quality of their clean energy procurement.

Annual renewable energy matching is increasingly being questioned by some climate and energy experts because it does not always reflect whether clean electricity is available when and where power is consumed. Geothermal can support more granular clean energy strategies by supplying low-carbon electricity across all hours.

For heavy industry, data centers, manufacturing and utilities, this could make geothermal a practical tool rather than a symbolic one. The strongest opportunities are likely to emerge where high-quality heat resources, supportive policy, grid demand and creditworthy buyers overlap.

A Promising Sector, but not a Guaranteed Breakthrough

The current geothermal boom is not simply a story about one technology. It reflects a broader shift in the clean energy transition: buyers increasingly need power that is not only renewable, but also reliable, local and available every hour of the year.

If next-generation geothermal can prove its performance at commercial scale and continue reducing costs, it could become a valuable part of the clean energy mix. If it cannot, the sector may remain limited to favorable regions and premium buyers willing to pay more for firm clean power.

For now, the direction of travel is clear. Geothermal energy is gaining attention because it addresses one of the hardest questions in decarbonization: how to supply clean power when the grid needs it most.

Source: www.nytimes.com