Google Just Bet 396 MW on Geothermal to Power Its AI

The​‍​‌‍​‍‌ AI Boom Has an Electricity Problem. Could the Answer Be Underground? Every time someone consults the internet or saves information in the cloud, the electricity is supplying power to the whole process. The power consumption of one single query of an AI is quite low, but if those activities are repeated by countless users on different devices running various models and thousands of servers working 24/7 at the data centers, then the cumulative effect is huge. Electricity needs turn out to be significant. The Energy and AI report from the International Energy Agency forecasts a possible rise in global use of electricity by data centers to nearly 945 terawatt-hours. AI plays a crucial role in such forecast expansion of energy use. For the energy sector this poses a challenge, And what is the source of all that electricity? Solar and Wind will remain crucial as sources of energy besides gas, nuclear, the storage of energy on a large-scale, and the development of modern grids will also be the other main factors making a contribution. However, there is another energy source that is attracting a great deal of attention: geothermal electricity. Heat from below the Earth's surface is the main source of geothermal electricity. This is very appealing as it can produce quite steady electricity supply without relying on sunlight or wind. Finding places where enough underground heat can physically be reached at a reasonable cost has always been the problem. Advanced drilling and geothermal power generation methods are slowly shifting these circumstances. 1. Geothermal Power Generation - Explanation and Operational Procedure? Power generation through geothermal means the conversion of heat stored beneath the Earth into electricity. We live on a planet whose crust contains a great heat source which is continually raising underground rocks and fluids. By digging wells and then using geothermal power stations we harness heat from below the surface and then convert it into usable electric energy. The source of geothermal energy is naturally the underground rocks which are being heated by the earths core. To extract hot underground fluids that can produce power we need to make geothermal heat accessible by means of well drilling and geothermal reservoir engineering. The heat energy is taken to the geothermal power house and the mechanical energy is produced using turbines that turn generators to generate electricity. After producing electricity from steam the remaining steam is condensed and the liquid is returned to nature to be reused or it might go under artificial recharging for further use. Geothermal power generation is similar to the process of boiling water that turns in a closed loop from liquid to vapor and back to liquid state. The process of evaporation and condensation is the most important in order to convert the heat into work. 2. The Pros and Cons of Geothermal Advantages: - Continuous baseload power generation - Environmental impact is less as compared to coal and other fossil fuel power plants - There is no requirement for storage - It is relatively low-cost power as opposed to wind and solar - No emissions of air pollutants - Small land footprint Disadvantages: - Location constraints - Drilling operations are expensive - It requires large initial investments Hot rocks and underground fluids store thermal energy. Wells bring that heat to the surface — either as hot water drawn up directly or via fluid circulating through a sealed underground loop. The heat produces steam (or vaporizes a secondary working fluid), which spins a turbine coupled to a generator. The resulting electricity flows through the grid to consumers. A residing geothermal mixture can be injected back under the earth's surface to support the geothermal reservoir. It must be understood that the setup of a power plant, be it a heat pump geothermal system or a direct geothermal resource, will vary with each case. It is of high importance to make this clarification: geothermal power differs from heating and cooling buildings with ground-source heat pumps. While a geothermal power plant produces electrical energy and a ground-source heat pump merely shifts heat without actually creating any new thermal ​‍​‌‍​‍‌energy. Three Conventional Geothermal Power Generation Technologies Before discussing next-generation geothermal energy, it is important to understand the three established technologies used to convert geothermal heat into electricity. Geothermal Update: What's New at The Geysers | KQED Dry Steam Geothermal Power Plants Dry steam power plants use steam produced naturally by underground geothermal reservoirs. The steam travels through production wells and drives a turbine connected to an electrical generator. These plants require a relatively uncommon geological condition: a reservoir capable of supplying suitable steam directly. How Geothermal Power Plant Works - Explained? - Mechanical Booster Flash Steam Geothermal Power Plants Flash steam power plants extract high-temperature water under pressure. When the fluid enters a lower-pressure vessel at the surface, part of it rapidly converts into steam. That steam drives a turbine to generate electricity. In some configurations, the remaining hot liquid can pass through a second separation stage to recover additional energy. Upthermo ORC | Systemy ORC i odzysk ciepła odpadowego Binary-Cycle Geothermal Power Plants Binary-cycle plants use geothermal fluid to heat a separate working fluid through a heat exchanger. The second fluid vaporizes at a lower temperature and drives the turbine. This configuration can generate electricity from lower-temperature geothermal resources that may not support conventional steam generation. These three generation technologies differ in the temperature and characteristics of the geothermal resources they can use. For electrical engineers, binary-cycle technology is particularly interesting because it expands the range of thermal resources that can potentially be converted into useful electrical output. However, lower-temperature heat generally limits thermodynamic conversion efficiency. A resource must still provide sufficient recoverable heat, fluid flow, and economic value to justify the investment. 3. Enhanced Geothermal Systems: Generating Power Where Natural Reservoirs Are Missing Traditional geothermal electricity generation depends on naturally occurring underground conditions. A suitable geothermal reservoir generally requires heat, fluid, and sufficient rock permeability to allow fluid to circulate. But what happens when the underground rocks are hot and the natural pathways for fluid circulation are inadequate? This is where enhanced geothermal systems, or EGS, become important. EGS technology creates or improves underground flow pathways so that fluid can circulate through hot rock and carry thermal energy back to the surface. Geothermal | Energy & Mining The basic EGS process involves drilling wells into suitable hot rock, developing an engineered reservoir, circulating fluid through the heated rock, and recovering the heat for electricity generation. The U.S. Department of Energy identifies EGS as a major opportunity for expanding geothermal development beyond naturally favorable hydrothermal regions. Why advanced drilling technology matters Modern geothermal development can draw on drilling techniques originally developed for the oil and gas industry. Horizontal drilling, directional drilling, improved downhole sensing, and more advanced reservoir characterization can help developers reach and access underground heat. The International Energy Agency identifies the transfer of oil and gas drilling expertise as an important factor in reducing geothermal development costs and expanding access to deeper thermal resources. The opportunity is substantial, but drilling remains expensive. Every well introduces uncertainty. Developers must determine whether the underground temperature, fluid circulation, and sustainable heat recovery will support the expected electricity output. A hot underground reservoir does not automatically become an economically viable power plant. 4. Closed-Loop Geothermal Systems: A Different Way to Capture Underground Heat Another promising approach is closed-loop geothermal technology. Unlike EGS, which relies on fluid circulation through an underground reservoir, a closed-loop system circulates a working fluid through sealed underground pipes. The circulating fluid absorbs heat from surrounding rock and transfers that thermal energy to the surface. DOB Energy - by geoLOGIC | News | Geothermal Energy — A Future In Western Canada? A potential advantage is that closed-loop systems do not depend on developing a permeable reservoir in the same way as EGS. However, system performance depends on pipe configuration, heat-transfer efficiency, rock temperature, underground thermal properties, and the cost of drilling and constructing the system. An important technical distinction is that a closed-loop geothermal reservoir and a binary-cycle power plant are not the same technology. The first describes how underground heat is collected. The second describes how that heat is converted into electricity at the surface. Depending on the resource temperature and project design, the two approaches can be used together. 5. Superhot Geothermal Energy: Reaching Higher Underground Temperatures Superhot geothermal systems represent another area of advanced geothermal research. These systems aim to access underground resources at temperatures exceeding approximately 375°C. At sufficiently high temperatures and pressures, water can enter a supercritical state with properties different from those of ordinary liquid water or steam. The U.S. Department of Energy identifies superhot geothermal resources as a potential way to achieve significantly greater power density than conventional lower-temperature systems. The engineering obstacles are substantial. High underground temperatures introduce challenges involving drilling equipment, downhole electronics, corrosion, well integrity, and long-term system reliability. Developing reliable systems capable of operating in these conditions is a prerequisite for commercial deployment. Superhot geothermal should therefore be viewed as an emerging opportunity rather than an established, widely deployed solution to current electricity shortages. 6. Why AI Data Centers Are Bringing Geothermal Energy Back Into the Spotlight The connection between AI and geothermal energy is not limited to using artificial intelligence to optimize power plants. AI is also creating demand for additional electricity. Large data centers need dependable power to operate servers, networking equipment, cooling systems, and supporting infrastructure. From a utility engineering perspective, annual electricity consumption is only part of the challenge. A data center also needs electricity to be available at the required location, at the required time, with appropriate power quality and system reliability. That is why continuous, low-carbon geothermal generation has attracted interest from major technology companies. A real-world example: Google and advanced geothermal On September 1, 2026, Fervo Energy announced a 396-megawatt power purchase agreement with Google to support further development of its Cape Station geothermal project in Utah. The additional geothermal capacity is expected to come online in 2028 and is intended to support potential data center development. This follows an earlier geothermal partnership between the companies and demonstrates growing commercial interest in firm geothermal electricity. A power purchase agreement is not the same as an operating power plant. The announced capacity remains subject to project development, construction, and commissioning. Nevertheless, these agreements show how demand for dependable electricity can create commercial opportunities for advanced geothermal power generation. Why utilities should pay attention From a grid planning perspective, geothermal generation can provide several potential benefits. It can deliver relatively steady electricity output, complement variable renewable generation, and reduce some dependence on weather-driven energy availability. Geothermal plants may also provide operational flexibility, subject to the limitations of their reservoirs and surface equipment. But electricity generation alone does not guarantee a reliable data center connection. Utilities must still evaluate transmission capacity, distribution infrastructure, voltage control, interconnection requirements, contingency conditions, and the availability of backup resources. Even a new 100-megawatt geothermal plant may require substantial supporting infrastructure before its generation can reach the intended load. The real question is not simply how much energy a plant can produce. It is whether the entire electrical system can deliver that energy reliably and economically. 7. The Technical and Economic Challenges of Geothermal Electricity Geothermal energy offers several attractive characteristics, but it is not a universal solution. The most important challenges include high upfront drilling costs, uncertain underground conditions, long development timelines, reservoir sustainability, water management, and potential induced seismicity. Enhanced geothermal projects require particular attention to underground pressure changes and seismic monitoring. The Department of Energy has developed guidance for managing these risks. Power generation performance also depends on heat-transfer efficiency, cooling conditions, equipment availability, and reservoir behavior over time. Developers must demonstrate that a project can produce sufficient electricity throughout its expected operating life, not merely during a successful initial test. This is where more advanced monitoring, modeling, and artificial intelligence may play an increasingly useful role. 8. What the Future of Geothermal Power Generation Could Look Like Geothermal electricity is entering a new stage of development. Advances in drilling, reservoir engineering, heat-transfer systems, and power conversion technology could expand the number of locations where geothermal projects are technically and economically feasible. The IEA's 2024 geothermal assessment outlined a scenario in which technological improvements and continued cost reductions could allow geothermal energy to meet up to 15% of global electricity demand growth through 2050. That is a conditional scenario, not a guaranteed deployment outcome. The next stage will depend on whether developers can translate successful demonstrations into repeatable, commercially competitive projects. For utilities, the most useful measure of progress will be dependable delivered electricity—not simply announcements about underground heat potential. Final Thoughts: The Future of Electricity May Be Beneath Our Feet The global electricity industry is facing a new challenge. AI, data centers, transportation electrification, and industrial growth are increasing demand for reliable electricity. Geothermal energy offers a potentially valuable response because it can generate electricity continuously while supporting the transition toward lower-carbon energy systems. But the technology must overcome difficult geological, engineering, financial, and infrastructure challenges before it can reach its broader potential. Enhanced geothermal systems, closed-loop configurations, and superhot geothermal research are expanding the possibilities. The future of geothermal power generation will ultimately depend on how successfully these technologies can deliver dependable electricity at a competitive cost. For an energy industry increasingly focused on reliability, that is what will matter most.