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What The Experts Say

Levelized Full System Costs of Electricity

Different electricity generating technologies are often compared using the Levelized Costs of Electricity (LCOE), which summarize different ratios of fixed to variable costs into a single cost metric. They have been criticized for ignoring the effects of intermittency and non-dispatchability. This paper introduces the Levelized Full System Costs of Electricity (LFSCOE), a novel cost evaluation metric that compares the costs of serving the entire market using just one source plus storage. Like LCOE, and in contrast to alternatives such as System LCOE, LFSCOE condense the cost for each technology into one number per market. The paper calculates LFSCOE for several technologies using data from two different markets. It then discusses some refinements, including the LFSCOE-95 metric that require each technology to supply only 95% of total demand.

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performance of eavor loop

NREL – Techno-economic performance of Eavor-Loop 2.0

This project evaluated techno-economic performance for a sample Eavor-Loop 2.0 design for electricity production and direct-use heating. The Eavor-Loop 2.0 design investigated is a 7.5-km deep closed-loop geothermal system consisting of 12 laterals for a total of more than 90 km of downhole well and lateral length.

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Climate impact report

Boundless – Eavor-Loop™ Climate Impact

This profile compares Eavor’s geothermal electricity generation technology against competing electricity generation systems, such as large-scale solar systems with integrated battery-energy storage systems (BESSs), with integrated natural gas turbines (NGTs), or with both.

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Eavor-Loop audit report

TNO – Eavor-Loop™ Audit Report

Eavor has proposed an innovative well design for geothermal energy production, the Eavor-Loop™ . The Eavor Loop consists of a closed loop system, in which heat is extracted from the deep subsurface through multi lateral wells acting as effective heat exchangers.

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Eavor-Lite™ Update After Four Years Of Operation

Eavor-Lite™ is a full-scale demonstration project of a multilateral closed-loop geothermal system which has been in operation since 2019. The project is located near Sylvan Lake, Alberta, Canada and consists of two 1.7 km long multilateral horizontal wellbores connecting two 2.4 km deep vertical wellbores to create a U-tube shaped closed-loop geothermal system. The horizontal wellbores are intersected using magnetic ranging technology, and sealed with a chemical completion technique, resulting in a large subsurface heat exchanger.

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Enablement of High-Temperature Well Drilling for Multilateral Closed-Loop Geothermal Systems

Constructing a multilateral closed-loop geothermal system (MCLGS) requires directional tools and magnetic ranging tools in the bottom-hole assembly (BHA) to drill and intersect the wellbores and create the closed loop. The levelized cost of energy (LCOE) of such an MCLGS is largely driven by rock temperature – the hotter the rock, the more energy that is produced from a given well configuration, and the lower the levelized cost. However, these tools have a maximum temperature limit above which they are no longer functional. To enable drilling of high-temperature rock formations and thereby decrease the LCOE, methods for estimating the temperature of the BHA critical components are required. To simulate drilling, two models of increasing complexity were developed. The first model is a one-dimensional pseudo steady state wellbore + thermal resistance model capable of estimating the temperature and pressure profile of the drilling mud throughout the drill pipe and annulus. This model allows for the understanding of key performance drivers and technology requirements to achieve high-temperature drilling.

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Eavor-Loop™ Dispatchability Case Study for PPA with Utility

Eavor-Loop™, a multilateral closed loop geothermal system, is a clean firm power generation technology that can be scaled to phase out fossil fuel baseload and peaker plant generation. Eavor has partnered with a major US utility for the large-scale development of Eavor-Loops to supply clean firm power to the grid. The favorable geothermal gradients in the region, coupled with the scalability of the Eavor-Loop™ solution, indicate that there is >1.2GW of potential Eavor-Loop™ generation on the selected project licence area located in southwestern USA.

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The Role of Clean Firm Power Generation in a 2050 Net-Zero Electricity Grid

Utility solar and wind generation play a large role in the pathways to a 24/7 carbon free energy future, especially considering that these resources are (and likely will remain for the coming decades) the least expensive form of electricity generation. While they are a central part of the mix, wind and solar alone will be insufficient. The intermittent nature of wind and solar, combined with their increased adoption in the grid, will create resiliency challenges towards meeting energy demand hour-by-hour, year over year.

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Joint Development Between Eavor and Turboden

Eavor’s proprietary geothermal power technology consists of two vertical wells connected by one or more passes designed to circulate a working fluid in a closed loop system, with no interaction with the underground formation water, to supply heat at the surface.
Turboden Organic Rankine Cycle (ORC) Technology converts the heat available at the surface into electricity by means of a closed thermodynamic process involving a suitable working fluid which is heated up in a heat exchanger and expanded in a turbine to generate electricity.

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Eavor-Lite Performance Update and Extrapolation to Commercial Projects

Eavor-Lite™ is a full-scale demonstration project of a multilateral closed-loop geothermal system. An update is presented based on ~16 months of operations and testing. The project is located near Sylvan Lake, Alberta, Canada and consists of two 1.7 km long multilateral horizontal wellbores connecting two 2.4 km deep vertical wellbores to create a U-tube shaped closed-loop geothermal system.

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Case Study of a Multilateral Closed-Loop Geothermal System

Results from a full-scale demonstration project of a multilateral closed-loop geothermal system are presented. The project is located near Sylvan Lake, Alberta, Canada and consists of two 2.5 km long multilateral horizontal wellbores connecting two 2.4 km deep vertical wellbores to create a U-tube shaped closed-loop geothermal system.

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