OOIR: Observatory of International Research

Papers

(The H4-Index of Renewable Energy is 123. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-10-01 to 2025-10-01.)

Article	Citations
Advances in thermal energy storage for renewable energies integration in the energy system	631
Analyzing convective heat transfer in combined solar chimneys: A theoretical and numerical study of key influencing parameters	484
Wake scaling of actuator discs in different aspect ratios	398
Corrigendum to “Tropho-metabolic transition during Chlorella sp. cultivation on synthesis of biodiesel” [Renew. Energy 98 (2016) 84–91]	364
Optimal phasing of tidal stream power around the British Isles and within the English Channel for green ammonia production	357
Theoretical models for predicting ventilation performance of vertical solar chimneys in tunnels	328
Increasing the capacity of pseudocapacitive WO3 auxiliary electrode for enhanced two-step decoupled acid water electrolysis	299
WITHDRAWN: ANN and ML Based Modeling of InGaN/GaN p-i-n Solar Cells for Concentrator Photovoltaics	298
Research on productivity of stimulated natural gas hydrate reservoir	290
A wind farm control strategy for frequency regulation reserve: Optimize wake loss and frequency support capability	289
Application of iron oxides modified volcanic rock in continuous phenol wastewater anaerobic treatment: Performance and underlying mechanisms	282
Experimental analysis of thermal energy variations in parabolic dish solar collector with hybrid heat storage medium	281
Editorial Board	279
Kinetic and characteristic investigations on the conversion of cellulose to 5-hydroxymethylfurfural in the mixed metal salt system	272
Derivation and verification of three-dimensional wake model of multiple wind turbines based on super-Gaussian function	271
A real options approach to renewable energy module end-of-life decisions under multiple uncertainties: Application to PV and wind in China	269
Editorial Board	268
A novel oscillatory thermal response test method for efficient characterization of ground thermal properties: Methodology and data analysis	254
Experimental-data-based, easy-to-use product gas composition prediction of a commercial open-top gasifier based on commercially used properties of softwood chips	252
Pivotal MoOx-decorated Ru/C with a monomeric structure boosts the room temperature and low-pressure hydrogenation of levulinic acid to γ−valerolactone	251
Impact analysis of COVID-19 pandemic on the future green power sector: A case study in the Netherlands	246
Performance assessment of a Triple Coaxial-Cylinder Wave-Energy Converter (TCWEC)	239
Site selection for offshore renewable energy platforms: A multi-criteria decision-making approach	238
Prioritizing strategies to eliminate barriers to renewable energy adoption and development in Ghana: A CRITIC-fuzzy TOPSIS approach	234
International trade of green hydrogen, ammonia and methanol: Opportunities of China's subregions	232

Optimal design of a renewable hydrogen production system by coordinating multiple PV arrays and multiple electrolyzers	222
Standardized benchmark of historical compound wind and solar energy droughts across the Continental United States	222
Research on stacking ensemble method for day-ahead ultra-short-term prediction of photovoltaic power	219
Comparative study based on techno-economics analysis of different shipboard microgrid systems comprising PV/wind/fuel cell/battery/diesel generator with two battery technologies: A step toward green m	217
Climate change and income inequality: Does renewable energy matter?	216
Energy, exergy, economic and environmental assessment of solar photovoltaic direct-drive refrigeration system for electronic device cooling	211
Design and performance estimation of a novel solar multiplate mirror concentration PVT system based on nanofluid spectral filter	209
Synergistic effect of acid sites and a gallium-based modified meso-/microporous catalyst for the pyrolysis of biomass	208
Evaluating the sustainability of the hydrogen economy using multi-criteria decision-making analysis in Korea	205
Integration of renewable energy, environmental policy stringency, and climate technologies in realizing environmental sustainability: Evidence from OECD countries	204
Understanding the imperativeness of environmental-related technological innovations in the FDI – Environmental performance nexus	202
Energy communities in rural areas: The participatory case study of Vega de Valcarce, Spain	202
Experimental study on the effects of chemical or microwave treatment on the tensile strength of hot dry rock	196
The role of eco-innovations, trade openness, and human capital in sustainable renewable energy consumption: Evidence using CS-ARDL approach	195
Taguchi optimization and thermoelectrical analysis of a pin fin annular thermoelectric generator for automotive waste heat recovery	195
Multi-timescale dispatch technology for islanded energy system in the Gobi Desert	193
Multi-objective optimization of operation strategy in snow melting system for airfield runway using genetic algorithm: A case study in Beijing Daxing International Airport	188
Transition towards ecological sustainability through fiscal decentralization, renewable energy and green investment in OECD countries	188
Enhancing the performance of a photovoltaic thermal system with phase change materials: Predictive modelling and evaluation using neural networks	185
The effect of gas diffusion layer on electrochemical effective reaction area of catalyst layer and water discharge capability	185
Innovative passive cooling of photovoltaic panel using loop heat pipe technology with passive daytime radiative cooling	182
Relationships between remarkable points in photovoltaic I–V curves	182
A robust I–V curve correction procedure for degraded photovoltaic modules	179
Design and optimization of a novel phase change photovoltaic thermal utilization structure for building envelope	178
A comparative study on the performance of ice-source heat pumps versus other heat source heat pumps: A case study in the UK	177
Assessing the performance and economic viability of solar home systems: A way forward towards clean energy exploration and consumption	176
Parametric study of a novel air-based photovoltaic-thermal collector with a transverse triangular-shaped block	175
Performance assessment of bifacial and monofacial PV systems on different types of soils in a low-latitude site	175
Influence of water hammer effect on low frequency oscillation of grid-connected hydropower station system	173
The pathway toward pollution mitigation in EU28 region: Does hydropower growth make a difference?	172
Concentration performance of solar collector integrated compound parabolic concentrator and flat microchannel tube with tracking system	170
Improving the performance of solar photovoltaic thermal cells using jet impingement and phase change materials cooling technology	170
Availability and 6E assessment and optimal design of a novel cogeneration system based on integrated turbo compressor station - SOFC-solar-geothermal-steam and organic Rankine cycles with machine lear	170
Hybrid wind-solar energy potential modeling using ERA5 and solar irradiation data in google Earth Engine	170
Global horizontal irradiance prediction model for multi-site fusion under different aerosol types	169
Flash evaporation strategy of organic Rankine cycle for geothermal power performance enhancement: A case study	166
A novel approach to optimize the positioning and measurement parameters in photovoltaic aerial inspections	164
Credible capacity calculation method of distributed generation based on equal power supply reliability criterion	159
Thermophysical advancements and stability dynamics in nanofluids for solar energy harvesting: A comprehensive review	157
Design and control of a parallel-axis twin-rotor counter-rotating marine current turbine for the shallow sea conditions	157
Modeling and interpretation of geomagnetic data related to geothermal sources, Northwest of Delijan	157
Performance investigation on an agricultural photovoltaic thermal system based on spectral separation	157
Abnormal data cleaning for wind turbines by image segmentation based on active shape model and class uncertainty	156
Sustainable synthesis of bio-diesel and jet-fuel range hydrocarbons from poisonous Abrus Precatorius seed oil over MoO3-HPW/Ga-KIT-6	155
Heat extraction from abandoned petroleum wells utilizing coaxial borehole heat exchanger in Ordos basin, China	155
Experimental investigation on direct expansion solar-air source heat pump for water heating application	152
Revolutionizing biodiesel with novel MWCNT-COOH@TiO2-ZnO nanocatalysts for enhanced transesterification and tribocorrosion resistance	152
Triticale and sorghum as feedstock for bioethanol production via consolidated bioprocessing	151
RETRACTED: Method of Four Moments Mixture-A new approach for parametric estimation of Weibull Probability Distribution for wind potential estimation applications	151
Assessment of regional-scale geothermal production based on a hybrid deep learning model: A case study of the southern Songliao Basin, China	151

Air supply subsystem efficiency optimization for fuel cell power system with layered control method	150
Numerical simulation on the heat extraction from the porous medium-low temperature geothermal reservoirs by self-circulation wellbore and its enhanced methods	149
PV-MLP: A lightweight patch-based multi-layer perceptron network with time–frequency domain fusion for accurate long-sequence photovoltaic power forecasting	148
Intelligent charge compression ignition combustion for range extender medium duty applications	147
Barriers analysis to Chinese waste photovoltaic module recycling under the background of "double carbon"	147
Regional assessment of extreme tropical cyclone waves for marine renewable energy development	146
A multi-parameter estimation of layered rock-soil thermal properties of borehole heat exchanger in a stratified subsurface	145
Technical and economic analysis of biogas and solar photovoltaic (PV) hybrid renewable energy system for dairy cattle barns	144
Energetic and economic analysis of a novel concentrating solar air heater using linear Fresnel collector for industrial process heat	144
Mitigation of severe false data injection attacks (FDIAs) in marine current turbine (MCT) type 4 synchronous generator renewable energy using promoted backstepping method	144
Innovative approach for co-production of single cell oil (SCO), novel carbon-based solid acid catalyst and SCO-based biodiesel from fallen Dipterocarpus alatus leaves	142
Ultraviolet–visible–near-infrared irradiation responsive high-entropy layered double hydroxides for on-demand hydrogen evolution reaction via sodium borohydride hydrolysis	141
The Spatiotemporal exploration of intercity transport energy efficiency in the mainland of China on the basis of improved stochastic frontier modelling	141
A study to investigate the energy recovery potential from different macromolecules of a low-lipid marine Tetraselmis sp. biomass through HTL process	141
Sustainable solution to the critical challenges of an oceanic wave farm for maximizing power generation	140
New trilobular geometry using advanced materials for experimentally validated enhanced heat transfer in shallow geothermal applications	139
Can copper and zinc replace a commercial trace element mixture in enhancing methane production from agricultural digestate post-processing?	137
Optimization of biomethane production from purified biowaste pyrolysis gas: A comparative techno-economic assessment	137
Modeling and stability investigation on the governor-turbine-hydraulic system with a ceiling-sloping tail tunnel	136
Benefits of establishing new energy consumption cities: Evidence from industrial enterprises sustainability	136
Study on the operation of small rooftop wind turbines and its effect on the wind environment in blocks	135
Performance analysis of a concentrated direct absorption solar collector (DASC) with nanofluids using computational fluid dynamics and discrete ordinates radiation modelling (CFD-DORM)	135
Measuring regional variations and analyzing determinants for global renewable energy	135
Effect of angle of incidence on the optical-electrical-thermal performance of photovoltaic insulated glass units	135
The nexus between economic development and pollution in the European Union new member states. The role of renewable energy consumption	134
WITHDRAWN: Nonlinear Kalman filters based rotor effective wind speed estimation: An experimental comparison	133
Site adaptation of global horizontal irradiance from the Copernicus Atmospheric Monitoring Service for radiation using supervised machine learning techniques	132
Design of a 20 kWth gasification reactor for harnessing energy from rice husks	131
Numerical simulation of electricity generation potential through five vertical wells at Fengshun geothermal field in China	130
Comparative study of grass pyrolysis over regenerated catalysts: Tyre ash, zeolite, and nickel-supported ash and zeolite	130
Unlocking the potentials using humidifier-dehumidifier for proton exchange membrane fuel cell waste heat recovery	130
Effect of fracture backfill on the hydraulic fracturing behaviour of deep granite under high-temperature and high-pressure conditions: Implications for hot dry rock geothermal mining	129
Improvement of GH10 xylanase activity based on channel hindrance elimination strategy for better synergistic cellulase to enhance green bio-energy production	129
Economic and sustainability prospects for wet waste valorization: The case for sustainable aviation fuel from arrested anaerobic digestion	128
Global geothermal electricity potentials: A technical, economic, and thermal renewability assessment	128
A sustainable biorefinery strategy: Conversion and fractionation in a facile biphasic system towards integrated lignocellulose valorizations	127
Uncertainty quantification analysis in the blade element momentum method	127
Highly fluorinated poly arylene ethers containing sulfonated naphthol pendants with improved proton conductivity as a polymer electrolyte for proton exchange membrane fuel cells	126
Parametric optimization of a novel solar concentrating photovoltaic-near field thermophotovoltaic hybrid system based on cascade utilization of full-spectrum solar energy	126
Functionalized chitosan-derived porous carbon as a promising catalyst in one-pot conversion of soybean oil to biodiesel	125
Evolving probabilistic modeling for long-term significant wave heights with a focus on extremes	125
A design-driven wind blade manufacturing model to identify opportunities to reduce wind blade costs	124
Biosynthesis of biolubricant catalyzed by lipase B from Candida antarctica immobilized on nanocomposite of cashew apple bagasse lignin	124
Optimization and analysis of the deflector system for a bidirectional H-type hydrokinetic twin-turbine system	124
Investigation of poultry slaughterhouse waste stream to produce bio-fuel for internal utilization	124
Performance analyses of supercritical carbon dioxide-based parabolic trough collectors with double-glazed receivers	124
Research progress in SO2 depolarized electrolysis at INET	123
3E thermodynamic modeling and optimization a novel of ARS-CPVT with the effect of inserting a turbulator in the solar collector	123