Renewability of geothermal resources

O’Sullivan, Michael; Yeh, Angus; Mannington, Warren

doi:10.1016/j.geothermics.2010.09.003

Cited by 48 publications

(16 citation statements)

References 9 publications

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“…In nearly every geothermal system, the extracted energy exceeds the natural thermal heat flow (O'Sullivan et al, 2010). As a result, the reservoir cools down over time, resulting in a thermal breakthrough at the production well.…”

Section: Introductionmentioning

confidence: 99%

Tracer design for tracking thermal fronts in geothermal reservoirs

2012

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Section: Introductionmentioning

confidence: 99%

Tracer design for tracking thermal fronts in geothermal reservoirs

2012

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“…Resource renewability may not be currently a pressing concern since there are no examples of a dramatic depletion in any of the exploited geothermal fields to date. Nonetheless, the issue of resource renewability has been discussed in particular with regard to Wairakei power plant [34], where the extraction of geothermal heat from the Wairakei-Tauhara system has been described as "unsustainable" as it currently occurs at around 5 times the system's natural recharge rate. However, while operation at a reduced capacity only may be possible after some time, the authors predict that both the resource pressure and temperature may fully recover to their pre-exploitation state after an extended shut-down period of 400 years.…”

Section: New Zealand Groupmentioning

confidence: 99%

A sustainability assessment framework for geothermal energy projects: Development in Iceland, New Zealand and Kenya

Shortall

Davíðsdóttir

Axelsson

2015

Renewable and Sustainable Energy Reviews

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“…This is illustrated in Figure 18.3, and has been tested using reservoir simulations. A useful equation for estimating the thermal recovery time [10] is…”

Section: Sustainability and Environmental Managementmentioning

confidence: 99%

Geothermal Power

Bromley

Mongillo

2013

Transition to Renewable Energy Systems

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IntroductionFuture deployment projections of geothermal energy resources have been published by the International Energy Agency (IEA) in a "Roadmap" document [1]. In volcanic and plate boundary settings, high-temperature geothermal energy is often the least expensive renewable energy option, especially in terms of long-run marginal cost (LRMC). For example, in New Zealand, the LRMC for new geothermal projects is US$ 50-67 MWh -1 (NZ$ 60-80) for the next 10 TWh, or 1.2 GW of installed capacity (Figure 18.1). The result is a projected replacement of coal (and gas) by geothermal (and wind) generation, reaching a target 90% renewable by 2020 ( Figure 18.2).Geothermal energy also has the added benefits of being a source of base-load power, in addition to efficiently providing on-demand heating and cooling for buildings, or for industrial and agricultural direct process heat applications. In order to assist decision-makers with future policy development and investment decisions, the IEA-GIA (Geothermal Implementing Agreement) has assisted in generating geothermal deployment projections and technology "roadmaps" through multi-party collaboration. This includes participation in the geothermal chapter of the Intergovernmental Panel on Climate Change (IPCC) special report on renewable energy [2]. The outcome of the deployment projections is location specific, but by 2050 geothermal energy could potentially contribute up to 30% of demand in volcanic countries (such as New Zealand, Philippines, and Japan) and 2-4% of electricity and heat demand for nonvolcanic countries through the development of hot sedimentary aquifer (HSA) and enhanced geothermal system (EGS) technologies (such as in Australia, Korea, China, India, and most of Europe).In some countries, rapid geothermal deployment over the past 5-10 years is already displacing coal-fired power generation (Figure 18.2). With a concerted collaboration effort, experienced countries can help out those that are relatively inexperienced in geothermal development, especially in East Africa, South America (Chile, Peru, etc.) and the South Pacific (e.g., Papua New Guinea), and by assisting nations (such Transition to Renewable Energy Systems, 1st Edition. Edited by Detlef Stolten and Viktor Scherer.

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Renewability of geothermal resources

Cited by 48 publications

References 9 publications

Tracer design for tracking thermal fronts in geothermal reservoirs

Tracer design for tracking thermal fronts in geothermal reservoirs

A sustainability assessment framework for geothermal energy projects: Development in Iceland, New Zealand and Kenya

Geothermal Power

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