renewable electricity
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2022 ◽  
Vol 308 ◽  
pp. 118226
Author(s):  
Christina Kockel ◽  
Lars Nolting ◽  
Jan Priesmann ◽  
Aaron Praktiknjo

2022 ◽  
Vol 14 (2) ◽  
pp. 852
Author(s):  
Florin Teodor Boldeanu ◽  
José Antonio Clemente-Almendros ◽  
Ileana Tache ◽  
Luis Alberto Seguí-Amortegui

The electricity sector was negatively impacted by the coronavirus disease (COVID-19), with considerable declines in consumption in the initial phase. Investors were in turmoil, and stock prices for these companies plummeted. The aim of this paper is to demonstrate the significant negative influence of the pandemic on abnormal returns for the electricity sector, specifically for traditional and renewable companies and the influence of ESG scores, using the event study approach and multi-variate regressions. Our results show that the pandemic indeed had a negative impact on the electricity sector, with renewable electricity companies suffering a sharper decline than traditional ones. Moreover, we find that ESG pillar scores affected electricity companies differently and are sector-specific. For renewable electricity companies, the returns were positively influenced by the environmental ESG scores and negatively by governance ESG scores.


2022 ◽  
Author(s):  
Sabrina Marecos ◽  
Rae Brigham ◽  
Anastacia Dressel ◽  
Larissa Gaul ◽  
Linda Li ◽  
...  

By the end of the century tens of gigatonnes of CO2 will need to be removed from the atmosphere every year to maintain global temperatures. Natural weathering of ultramafic rocks and subsequent mineralization reactions can convert atmospheric CO2 into ultra-stable carbonates. But, while natural weathering will eventually draw down all excess CO2, this process will need hundreds of thousands of years to do it. The CO2 mineralization process could be accelerated by weathering ultramafic rocks with biodegradable lixiviants like organic acids. But, in this article we show that if these lixiviants are produced from cellulosic biomass, the demand created by CO2 mineralization could monopolize the world's supply of biomass even if CO2 mineralization performance is high. In this article we demonstrate that electromicrobial production technologies that (EMP) combine renewable electricity and microbial metabolism could produce lixiviants for as little as $200 to $400 per tonne at solar electricity prices achievable within the decade. Furthermore, this allows the lixiviants needed to sequester a tonne of CO2 to produced for less than $100, even with modest CO2 mineralization performance.


2022 ◽  
Vol 306 ◽  
pp. 118145
Author(s):  
Thomas Longden ◽  
Fiona J. Beck ◽  
Frank Jotzo ◽  
Richard Andrews ◽  
Mousami Prasad

2022 ◽  
Vol 334 ◽  
pp. 02002
Author(s):  
Marco Marchese ◽  
Paolo Marocco ◽  
Andrea Lanzini ◽  
Massimo Santarelli

The present work analyses the techno-economic potential of Power-to-Liquid routes to synthesize Fischer-Tropsch paraffin waxes for the chemical sector. The Fischer-Tropsch production unit is supplied with hydrogen produced by electrolysis and CO2 from biogas upgrading. In the analysis, 17 preferential locations were identified in Germany and Italy, where a flow of 1 t/h of carbon dioxide was ensured. For each location, the available flow of CO2 and the capacity factors for both wind and solar PV were estimated. A metaheuristic-based approach was used to identify the cost-optimal process design of the proposed system. Accordingly, the sizes of the hydrogen storage, electrolyzer, PV field, and wind park were evaluated. The analysis studied the possibility of having different percentage of electricity coming from the electric grid, going from full-grid to full-RES configurations. Results show that the lowest cost of Fischer-Tropsch wax production is 6.00 €/kg at full-grid operation and 25.1 €/kg for the full-RES solution. Wind availability has a key role in lowering the wax cost.


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