The First Truly Scalable Form of Clean Baseload Power
A typical geothermal power plant works by drilling down into a naturally occurring underground reservoir of hot water, normally in volcanic regions. This hot water is pumped to the surface and turns into steam when it returns to atmospheric pressure, driving an electricity-generating turbine. The steam is then cooled, and the cold water is pumped back into the underground reservoir to be reheated.
A so-called low-enthalpy geothermal energy (LEGE) plant has similar principles but does not utilize underground hot-water reservoirs — it simply pumps water down to a depth of 1-5km and uses the hot rock to heat the water, which is then pumped back to the surface to power an Organic Rankine Cycle (ORC) electricity-generating system. But according to Eavor CEO, John Redfern, LEGE has never taken off because the amount of energy needed to pump the heated water to the surface and later reinject it equates to 50% or more of the electricity the plant generates.
The idea for Eavor-Loop™ came from the company’s co-founder and now chief business development officer, Paul Cairns, during a chat with Redfern in 2017 about how suspended oil wells in Alberta could be re-used for profit — a conversation which then turned to LEGE.
“Luckily for us, my co-founder wasn’t an engineer, he wasn’t a scientist, he was a finance guy, but a creative one, and so unencumbered by geoengineering knowledge. He said, ‘why doesn’t low-enthalpy geothermal energy work?’ And I said, ‘because of the parasitic pump load that uses about 50-80% of the power produced, so little energy is produced’.
“He says, ‘well, to get around that, why don’t we just drill down two wells and connect them horizontally [below ground] and we’ll connect them on the surface and make this big loop — wouldn’t that flow better?’
“And I thought it was the dumbest idea I’d ever heard in my life… incredibly inefficient [and] capital intensive.”
But engineers such as Matt Toews, who is now the company’s chief technology officer, pointed that such a configuration would not only eliminate the parasitic pump load but would in fact pump itself due to the thermosiphon effect. This is because cold water is denser than warm water, so the cold essentially pushes the warm water towards the surface.
“And that got us excited… This is something where we can actually make a difference…
…This is the Holy Grail of power.”
Eavor is the Solution the World Has Been Waiting For
As a completely closed-loop system, we circulate a benign working fluid that is isolated from the environment and therefore is scalable globally without fracking, GHG emissions, earthquake risks, water use, produced brine or solids or aquifer contamination. Eavor-Loop™ produces much-needed reliable baseload power.
Transforming the Power Industry
Eavor’s technology consists of several Patent Pending innovations. The Eavor-Loop is a closed system within which a proprietary working fluid is contained and circulated. The working fluid is not fluid from a reservoir flowing into our wells, it is a fluid added to the closed-loop Eavor-Loop™ to create an efficient radiator, much like a vehicle radiator circulates fluid in a closed loop to remove heat from a gasoline engine.
Eavor-Loop™ harvests heat from deep in the earth to be used for commercial heating applications (ex: greenhouses or district heating) or to be used to generate electricity using conventional heat to power engines. Eavor-Loop™ is an industrial scale geothermal system that mitigates many of the issues with traditional geothermal systems, which rely upon using wells to produce brine from a subsurface aquifer.
The closed-loop is the key difference between Eavor-Loop™ and all traditional industrial-scale geothermal systems. Eavor-Loop™ is a buried-pipe system, which acts as a radiator or heat exchanger. It consists of connecting two vertical wells several kilometres deep with many horizontal multilateral wellbores several kilometres long. As these wellbores are sealed, a benign, environmentally friendly, working fluid is added to the closed-loop as a circulating fluid. This working fluid is contained within the system and isolated from the earth in the Eavor-Loop™. The wellbores act as pipes, not wells producing fluid from the earth.
The working fluid naturally circulates without requiring an external pump due to the thermosiphon effect of a hot fluid rising in the outlet well and a cool fluid falling in the inlet well. The working fluid contained in this closed-loop pipe system brings thermal energy to the surface where it is harvested for use in a commercial direct heat application or converted to electricity with a power generation module (heat engine). Unlike heat pumps (or “geo-exchange”), which convert electricity to heat using very shallow wells, Eavor-Loop generates industrial-scale electricity or produces enough heat for the equivalent of 16,000 homes with a single installation.
Eavor-Lite™ Demonstration Project
The Eavor-Lite™ Demonstration Project is a full-scale prototype of the Eavor technology suite. The project site is located near Rocky Mountain House, Alberta. Drilling and construction began in August of 2019. Eavor-Lite™ consists of two vertical wells, joined by two multilateral legs at 2.4km depth, connected by a pipeline at surface. The rationale for this design, which is not intended to be commercially viable, is to build a project that proves and demonstrates all the critical elements of Eavor’s technologies at the lowest cost. This demonstration is designed to achieve the most efficient path to acceptance and commercialization of the technology by project developers and commercial financiers.
|Operational Objectives||Technical Objectives|
|Phase 1 - Drilling ✓||Drill and intersect a multilateral Eavor-Loop™ with two laterals ✓|
|Phase 2 - Surface Pipeline & Facilities ✓||Seal the Eavor-Loop™ while drilling ✓|
|Phase 3 - Testing ✓||Validate the thermodynamic performance and demonstrate thermosiphon ✓|
The Eavor-Lite™ Demonstration is designed to achieve the following three technical objectives:
- Drill and intersect a multi-lateral Eavor-LoopTM with 2 lateral wellbores from each vertical wellbore
- Intersect wellbores/mechanically confirm intersect
- Seal lateral openhole wellbores while drilling
- Pressure test
- Maintain circulation rate with negligible leak rate
- Maintain low solids production
- Validate thermodynamic performance and demonstrate thermosiphon effect
- Match or exceed thermodynamic model performance
- Demonstrate thermosiphon control and operation
- Achieve >90% uptime
Earth is our Battery
Eavor’s technology consists of several Patent Pending innovations. An Eavor-Loop™ is the connection of two vertical wells with many horizontal multi lateral wellbores creating a closed buried-pipe system. Eavor’s proprietary working fluid is not from a reservoir, it is selected and added at surface, then circulated to harvest heat from deep in the earth to be used to generate electricity or in commercial heating/cooling applications.
Changing the World ForEavor
Eavor is a technology-based Energy company dedicated to creating a clean, reliable and affordable energy future on a global scale. Eavor-Loop™ transforms the world's energy stack, addresses climate change and provides socioeconomic balances: clean, scalable, resilient baseload power for everyone, for Eavor.
Notoriety - Rolling Stone - The Energy of the Future is Right Beneath Your Feet
Eavor has been featured in Rolling Stone, Launching our new Harmony video.
"Wind and solar remain the renewables of choice, but they are only part of the solution says Malcolm Ross The world also needs what some, like Duke Energy, call a “ZELFR”; a Zero-Emitting Load-Following Resource. That’s quite a mouthful, but it just means a clean zero-carbon energy source that can be produced on demand.
Unfortunately, ZELFRs have been few and far between. Low-carbon renewables, like wind and solar, are not available on-demand since they only produce when the wind blows and the sun shines. As a result, coal, gas, nuclear and/or massive storage capacity units (e.g. batteries) are still needed to ensure reliable power. But the ability to be completely green, using ZELFRs, could be on the horizon.
Recently, a start-up called Eavor (pronounced “ever”) developed what may be the world’s first ZELFR capable of operating on a scale similar to oil and gas."
To watch the video and read the full article visit Rolling Stone
Notoriety - Vox.com - Geothermal energy is poised for a big breakout
Eavor was recently mentioned in a fantastic Vox article;
"Geothermal power is the perpetual also-ran of renewable energy, chugging along in the background for decades, never quite breaking out of its little niche, forever causing energy experts to say, “Oh, yeah, geothermal ... what’s up with that?”
Well, after approximately 15 years of reporting on energy, I finally took the time to do a deep dive into geothermal and I am here to report: This is a great time to start paying attention!"
"An Eavor-Loop can act as baseload (always-on) power, but it can also act as flexible, dispatchable power — it can ramp up and down almost instantaneously to complement variable wind and solar energy. It does this by restricting or cutting off the flow of fluid. As the fluid remains trapped underground longer, it absorbs more and more heat."
To read the full article, visit Vox.com
Select a link below to read the full article.
- RECHARGE News - Unlimited, on-demand renewable energy anywhere in the world - is Eavor-Loop climate change's holy grail?
- Setting The Stage For Clean Geothermal Development
- Virtual Reality Tour Announced By Cutting Edge Canadian Energy Tech Company
- Rolling Stone - The Energy of the Future is Right Beneath Your Feet
- Huisman and Eavor to collaborate on next generation drilling technology
- Michael Liebreich appointed as Eavor Advisory Board Chair
- Live From The Young Women In Energy Awards
- Eavor Selected as Part of Equal Ocean’s 20 Most Valuable Green Technology Companies All Over the World
- HexGn Top 100 Sustainability and Renewable Energy Startups for 2020
- John Redfern’s response to Todayville’s Open Letter to Canadians and Oil & Gas Executives
- Eavor Nominated for The Narwhal List – 2020
- The Joules Accelerator Has Chosen Eight Startup Companies, Including Eavor*
- Eavor GmbH selected as an endorsed nominee for the Ruggero Bertani European Geothermal Innovation Award 2020!
- Jeotermal Haberler
- Deep-Tech Investor Vickers Venture Partners Invest in Eavor Technologies Inc In Addition To Helping Tackle Virus Outbreak
- Drilling For Clean Energy: Geothermal Innovation In Alberta
- How The Oilpatch And Geothermal Development Can Make Canada A Global Clean Energy Leader
- Going Underground: Made-in-Alberta Geothermal Solution Has The Potential To Go Global
- The Scoop on Closed-Loop: A Chat with John Redfern, CEO of Eavor
- Eavor Announces $11.4 million in Early Warrant Exercises and 2020 Technology Development Program
- Eavor Technologies and Enex Power target revival of Geretsried geothermal project in Germany
- Eavor Announces a Commercial Eavor-Loop Project to be built in Geretsried, Germany
- The Canadian Oil Service Sector Joins Forces to Support the Emerging Canadian Geothermal Industry
Select a link below to read the full article.
Video - How Eavor Works
Video - Eavor's Harmony
Video - Better Than Renewables
Video - Job Creation and Economy
Video - Eavor-Lite™
Video - Eavor-Lite™ to James Joyce Animation
Eavor-Lite™ Virtual Tour
Due to the travel restrictions of the current global pandemic, Eavor Technologies addresses increasing client demand for tours of its facilities through a scalable, innovative, technologically clever solution. Utilizing virtual reality, Eavor can now showcase their demonstration project (Eavor-Lite™) located near Rocky Mountain House, Alberta to any potential client from anywhere in the world.
Guided by your friendly tour guide Jen, alongside Eavor’s Lead Engineer, Bailey Schwarz, and Chief Technology Officer Matt Toews, the experience can last minutes or hours, allowing participants to gain an increased understanding of Eavor and their game-changing technology.
You can view the tour online on Eavor’s website here or contact Eavor to see if you qualify for an Oculus Quest package.