Review of transition paths for coal-fired power plants

Song, Fulong; Mehedi, Hasan; Chen, Liang; Meng, Jing; Chen, Zhengxi; Shi, Fang

doi:10.1016/j.gloei.2021.09.007

Cited by 31 publications

(16 citation statements)

References 62 publications

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“…Retrofitting plants with fuel switch technologies is often economically sound. However, only a particular share of coal is usually replaced, which reduces but does not avoid CO 2 emissions [22]. Therefore, a fuel switch may be considered a transitioning option for CFPPs [22].…”

Section: Fuel Switchmentioning

confidence: 99%

“…Integrated Gasification Combined Cycle (IGCC) is currently a widespread re-powering option for power utilities since it reduces CO 2 -emissions and provides additional operational flexibility [22,26]. In an IGCC, preliminary, there is a substoichiometric fuel gasification (e.g.…”

Section: Integrated Gasification Combined Cycle (Igcc)mentioning

confidence: 99%

“…Retrofitting using a fuel switch to biomass [22] requires a replacement of the fuel handling and input system, the pre‐treatment, and the burning system to enable a 100% retrofit [23]. However, a partial or complete substitution of coal with biomass is currently one of the main retrofitting options for CFPPs with existing experience of co‐firing biomass in the coal industry [2].…”

Section: Introductionmentioning

confidence: 99%

“…(2021) [22]. However, this involves high costs and can also not be considered a full re‐powering technology as it only serves to mitigate CO 2 emissions to a certain extent [22].…”

Section: Introductionmentioning

confidence: 99%

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Analysing sector coupling technologies for Re‐purposing coal‐fired power plants–Case study for the ENTSO‐E grid

Traupmann

Greiml

Steinegger

et al. 2022

IET Energy Syst Integration

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The high emission intensity of coal-fired power plants (CFPP) leads to the inevitable next step towards energy transition, the coal phase-out. One challenge is the subsequent use of still-functioning assets. Re-purposing these assets avoids value loss and creates new opportunities for coal regions. Therefore, this study considers the sector coupling technologies Power-to-Gas (PtG) and Gas-to-Power (GtP) as re-purposing options. First, a multi-variable Mixed-Integer Linear Programming optimisation model is established. This model includes the participation of the plant in the current (2020) and future (2030, 2040) electricity and natural gas spot-markets and the balancing power market while fulfilling existing contracts, and allows for determining the re-purposing technologies' operating profiles. By applying a techno-economic analysis, investment recovery periods of the considered re-purposing technologies are assessed, which range between two (GtP) and over ten (PtG) years. A sensitivity analysis accounting for current energy prices and technological advancements reveals capital expenditure has the highest impact on this Return-On-Investment period. Additionally, a case study considering the Austrian energy grids is performed to account for the grid impact of integrating these technologies at former CFPP sites. Thus, it is found that the investigated sector coupling technologies have the potential to compensate for grid congestions even in profit-optimised operation. K E Y W O R D Scoal phase-out, combined cycle gas turbine, energy markets, mixed-integer linear programming, power-to-gas | INTRODUCTIONCoal represents the most common fossil fuel resource and is the largest source for electricity generation, providing about 37% of the global electricity demand [1]. Additionally, coal electricity generation is considered reliable and cost-effective [2]. However, since coal is also the most carbon-intensive fossil fuel, currently accounting for more than 30% of global CO 2 emissions [3], coal-fired electricity generation is under political and economic pressure [2]. Therefore, the coal phaseout [4] is an inevitable next step for European countries to rapidly achieve climate neutrality of the electrical energy system [4]. To remain within the carbon budget of the Paris Agreement [5], 72% of the CFPPs operating in 2020 within the European Union (EU) have to be shut down by 2025 [4, 6]. While more than 30% of the European countries already have coal-free power generation, the coal phase-out is not even under discussion in 24% of the European countries. A more detailed description of the coal phase-out trends in Europe can be seen in Figure 1. According to the individual national phaseout plans, 63% of the European countries are expected to generate coal-free electricity by 2030 [7].The coal phase-out, however, leads to the early closure of existing coal-fired power plant (coal-fired power plants (CFPP)) sites before they reach end-of-life. Thus, the coal phase-out entails the risk of leaving valuable assets (e.g. infr...

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Section: Fuel Switchmentioning

confidence: 99%

Section: Integrated Gasification Combined Cycle (Igcc)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…(2021) [22]. However, this involves high costs and can also not be considered a full re‐powering technology as it only serves to mitigate CO 2 emissions to a certain extent [22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysing sector coupling technologies for Re‐purposing coal‐fired power plants–Case study for the ENTSO‐E grid

Traupmann

Greiml

Steinegger

et al. 2022

IET Energy Syst Integration

View full text Add to dashboard Cite

show abstract

“…In the EU-RFCS project RECPP-Re-purposing Coal Power Plants [4], different technological re-purposing concepts are being investigated at the European level. Besides aspects of a fuel change towards biomass, which is the most common retrofitting measure for re-using coal-fired power plants [5], some re-purposing strategies exist based on technologies such as battery-storage systems [6] or thermal energy storages [7]. Others only re-use the areas of the former coal-fired plants for non-energy-related purposes such as for warehouses, logistic-centres, etc.…”

Section: Introductionmentioning

confidence: 99%

Optimization-based investigation of different repurposing concepts for Austrian coal-fired power plants

Kienberger

Traupmann

Cvetkovska

2022

Elektrotech. Inftech.

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Even though the current war in Ukraine has led to a short-time renaissance of coal-fired power plants, the age of coal-based power generation is about to end. Nevertheless, the coal-fired power plants no longer needed for their original purpose are still valuable assets. In this paper, we consider three technological approaches for repurposing them: gas-to-power (operation of combined cycle gas turbine plants), power-to-gas (operation of electrolysis plants for feeding hydrogen into the gas grid), and a combination of the two technologies mentioned above. Our aim is to find optimal operating modes in terms of profit for the three approaches. For this, we use a mixed-integer linear multi-variable optimization model and time-resolved price forecasts for electricity and gas for 2030 and 2040. Our results show that, also in future energy systems, gas-to-power plants allow for economic benefits: In times of district heat demand, they operate in the spot market and profit from dual revenues. Balance and ancillary markets allow for additional revenues from the capacity provision. Power-to-gas plants do not show the same good economic performance. However, they allow for an economically sound operation and gain most of their profits in the spot market. Compared to the others, combined plants do not offer economic advantages. In our paper, we also investigate the currently high energy price situation. It allows for payback periods of power-to-gas plants as anticipated for 2040. For this reason, long-term high prices may accelerate the deployment of such future technologies.

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Energy transition through bioelectricity in Pakistan: Implications for limiting global mean temperature below 1.5°C

Raza

Aman

Tunio

et al. 2023

Env Prog and Sustain Energy

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Climate change threats demand unprecedented economic shifts around the world, including a fundamental transformation of the global energy system. An energy transition is underway in most regions, predominantly in the power sector. This research depicts the energy transition pathway for achieving 100% renewable energy systems through bioenergy in Pakistan. The growth rate of 20%, 30%, and 40% in biomass projects were considered for the study period 2023 to 2053 using the Low Emissions Analysis Platform (LEAP) software. It presents a technology-rich, multi-sectoral and cost-optimal energy transition pathway for limiting global mean temperature below 1.5 C. The results revealed that Pakistan's electricity generation undergoes a rapidly evolving transition from predominantly fossil fuels 62.1% in 2023 to 81.3% renewables in 2053, and entirely zero CO 2 emissions by 2060. Hydro source is costly, wind and solar sources are seasonal so biomass emerges as the major electricity supply source in a cost optimal energy transition of Pakistan. Share of biomass is increasing from a mere 0.81% in 2023 to around 9.44% by 2053 under the 20% growth rate, which then increase to 39.67% by 2053 under the 30% growth rate and further increases to 78.33% by 2053 under the 40% growth rate. Pakistan contributes 0.8% of the global carbon footprint, but we are among the 10 most climate-stressed countries on the planet in 2023 so this study helps to reduce cumulative CO 2 emissions from 151.63 million metric tons to 8.90 million metric tons from 2023 to 2053 across the power, heat, transport, and desalination sectors. K E Y W O R D S biomass, CO 2 emissions, energy policy, environmental planning, waste management 1 | INTRODUCTION The Paris Agreement (PA) was agreed on December 2015 during the United Nations Framework Convention on Climate Change's (UNFCCC), 21st Conference of Parties (COP21). 1 It went into effect on November 4, 2016, and superseded the Kyoto Protocol, a previous international pact to reduce CO 2 emissions. 2 Its principal goal is to strengthen the mechanisms in place to tackle climate change by keeping the global average temperature rise much below 1.5 C over preindustrial levels. 3 For this purpose, the PA was signed by 195 countries, to reduce carbon emissions and put together a joint effort for preventing global warming. 4 Of these 195 countries, 17 are of the Commonwealth of Independent States (CIS) and South-Eastern Europe. 4 These countries are of particular interest as their transition

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Review of transition paths for coal-fired power plants

Cited by 31 publications

References 62 publications

Analysing sector coupling technologies for Re‐purposing coal‐fired power plants–Case study for the ENTSO‐E grid

Analysing sector coupling technologies for Re‐purposing coal‐fired power plants–Case study for the ENTSO‐E grid

Optimization-based investigation of different repurposing concepts for Austrian coal-fired power plants

Energy transition through bioelectricity in Pakistan: Implications for limiting global mean temperature below 1.5°C

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