November 28, 2023 by Michael Terrell, Senior Director, Energy and Climate (with Dr. Sakharov's comments and thoughts in red as usual)
(I stumbled upon this news on Twitter, and it seems there's some confusion among people regarding its details. Allow me to emphasize certain aspects for a clearer understanding. -Dr. Sakharov)
To make the rapid progress needed to address climate change, we must accelerate a clean energy transition on a planetary scale. That’s why we set an ambitious goal to operate our data centers and office campuses on 24/7 carbon-free energy (CFE) on every grid where we operate by 2030 (Googled into details a bit, Google aims to achieve carbon neutrality just for its campuses, not every grid where it operates. -Dr. Sakharov), with the ultimate aim of accelerating the decarbonization of the world’s electricity systems.
To achieve these goals, we must quickly commercialize advanced clean electricity technologies. One of the most promising opportunities is enhanced geothermal energy, which uses new techniques (New? Geothermal is a 120 y.o. technology. But OK, let's read further. -Dr. Sakharov) to harness the consistent heat from within the Earth’s crust and generate electricity without burning fossil fuels or releasing carbon into the atmosphere. This helps provide a supply of clean energy that complements variable renewables, such as solar and wind, and brings the grid closer to operating on 24/7 CFE.
Two years ago, we partnered with clean-energy startup Fervo on the world’s first corporate agreement to develop an enhanced geothermal power project (Yes, all other existing geothermal projects are not covered by corporate agreements. Strange, but OK, continue reading. -Dr. Sakharov). Today, we are pleased to announce that our geothermal project is now operational and carbon-free electricity has started flowing onto the local grid that serves our data centers in Nevada.
The U.S. Department of Energy found that geothermal energy could provide up to 120 gigawatts of reliable, flexible generation capacity in the U.S. by 2050 and generate over 16% of the U.S.’ anticipated electricity needs. Geothermal is a viable clean energy option in many regions where it’s difficult to build other renewable energy sources, notably the Asia Pacific region. Still, geothermal is not yet widely used, because traditional technologies can only be deployed economically in areas where underground heat is easily accessible. (Not exactly, it's more of a cost of drilling. -Dr. Sakharov)
When we began our partnership with Fervo, we knew that a first-of-a-kind project like this would require a wide range of technical and operational innovations. (Hm... Like what? Drilling a water well instead of an oil production well? -Dr. Sakharov) Unlike traditional geothermal power, Fervo uses drilling techniques pioneered by the oil and gas industry to harness heat that would have previously been difficult to access. To tap into this subsurface heat at our site in Nevada, Fervo dug two horizontal wells and installed fiber-optic cables to capture data that shows the flow, temperature and performance of the geothermal system in real-time. (Sounds like a very usual ONG drilling, let me guess, they probably even contracted Schlumberger, Halliburton or Baker Hughes, am I right? -Dr. Sakharov) The result is a geothermal plant that can produce round-the-clock CFE using less land than other clean energy sources and drawing on skills, knowledge, and supply chains that exist in other industries. From our early commitment to support the project’s development to its successful completion, we’ve worked closely with Fervo to overcome obstacles and prove that this technology can work. (Here's the key takeaway: this is simply a demonstration of technology! The core concept was to showcase the adaptability of typical ONG technologies within the Energy sector. But don't underestimate its significance—it's substantial! My heartfelt congratulations go... no, not to Google, but to Fervo Energy for this accomplishment. Houstonian (of course) guys really did a good job! Not their fault how Google writes its press releases. -Dr. Sakharov)
While we’ve started with this project in Nevada, there’s potential for geothermal to grow. We recently announced a partnership with Project InnerSpace, a leading non-profit organization dedicated to the global development of geothermal energy, to accelerate the adoption of geothermal energy. (Now, this section is relevant for Reclaimed Minerals. I'm exploring the integration of geothermal ORC (Organic Rankine Cycle) 20MW power plant into the direct iodine-lithium extraction facility (DIE/DLE) in the future. Currently, it's not financially feasible in Oklahoma, primarily due to regulatory constraints, but times are changing rapidly. -Dr. Sakharov)
We see our efforts as part of a bigger picture. As we continue on our journey to 24/7 CFE, we’ll keep pushing boundaries, testing new ideas and working with others to transform the power sector globally. We’re excited to see others — like the U.S. federal government — join us by setting 24/7 CFE goals. And we’ll continue to work with our partners to advocate for policies that advance the clean energy transition. Together, we can accelerate advanced clean energy technologies and build the resilient, secure, cost-effective and fully decarbonized electricity grids that are needed to mitigate climate change and create a prosperous, carbon-free future for all.
(Wrapping this up, the average depth of a saltwater disposal well is around 8000 ft (though both ours at Iodine One go even deeper). With each 130 ft depth, there's an increase of +1 degree Celsius. This brings us to 61°C (141°F), warmer than a typical home hot tub but still a long way from overheated steam. Let's add 30-40 degrees for Nevada. Still leaves us with a straightforward and familiar organic Rankine cycle geothermal setup—nothing too extravagant, except for the Google PR guys of course. But overall, the proof of concept for commerce of geothermal helps others a lot. Thank you, Fervo team! -Dr. Sakharov)