AbuBakr S Bahaj

AbuBakr S Bahaj
University of Southampton · School of Engineering - Faculty of Engineering & Applied Sciences

Professor of Sustainable Energy - (www.energy.soton.ac.uk)

About

401
Publications
83,339
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Introduction
AbuBakr Bahaj holds the Chair of Sustainable Energy & leads the 55-strong ECCD at the University of Southampton (www.energy.soton.ac.uk). He founded the International Marine Energy Journal. He holds visiting professorships at Xi’an University of Architecture and Technology, Xi’an, China, the Ångström Laboratory, University of Uppsala, Sweden (2011-15) and King Salaman bin Abdulaziz Energy Research Chair, at King Abdulaziz University, Saudi Arabia. He is a Fellow of: Institution of Civil Engineers, Institution of Engineering Technologies & Royal Academy of Arts. In 2012, he was appointed Chief Scientific Advisor to Southampton City —believed to be the 1st such appointment in the UK. In 2014, he was named by the UK’s Science Council as one of the UK’s 100 leading practising scientists.

Publications

Publications (401)
Article
Full-text available
A multi-criteria decision-making analysis linked to a Geographical Information System was developed to solve the spatial siting for offshore wind farms taking into account appropriate conflicting factors/constraints. A new approach is presented to solve the conflicting factors by determining the Importance Index (I) for offshore wind farms. This is...
Article
The International Marine Energy Journal (IMEJ) deals with research and development in the renewable marine energy arena. It is a bold new initiative by the marine renewable energy community. It is an open-access only journal where authors maintain copyright over their work. IMEJ justifies its ‘I’ by a genuinely international Editorial Board of reno...
Article
Full-text available
Energy services are crucial to human wellbeing and development, and without reliable energy, it is difficult to escape subsistence lifestyles and poverty. Here, we report on four identical capacity rural minigrid interventions undertaken in Kenya and Uganda with differing socioeconomic characteristics and demographics. The research outcomes present...
Article
Full-text available
Dust accumulation on solar photovoltaic (PV) modules reduces light transmission from the outer surfaces to the solar cells reducing photon absorption and thus contributing to performance reduction of PV systems. In regions such as the Middle East where dust is prevalent and rainfall is scarce, remedial measures are needed to reduce such impacts. Cu...
Article
Full-text available
We examine the impact of rural electrification on individuals and businesses within a community in order to test a resource-based theory of entrepreneurship. We show that access to electricity increases average households’ income and entrepreneurial activities. The impact of electricity on entrepreneurial activity has wide-ranging implications for...
Article
The International Conference on Evolving Cities (ICEC) took place as a hybrid event (with both online and in-person delegates) at the Centenary Building (B100) situated in the Highfield Campus at the University of Southampton, UK from 13-15 July 2022. It brought together leading academics, policymakers, and industry specialists to debate the role o...
Article
Full-text available
Bangladesh has a rapidly increasing population and coupled with healthy economic growth, is resulting in a rising energy demand. The country also aims to increase its renewable share of electricity to 10% by 2030. However, due to limited wind resources, solar energy seems to be most appropriate to deliver such a target. However, in a land-scarce co...
Article
Full-text available
Water resources are essential for human consumption and food production. The extraction and delivery of water resources are highly dependent on energy. Hence water, energy and food security are inextricably linked, and this nexus constitutes a major global societal challenge. Furthermore, globally, irrigation constitutes around 70% of our freshwate...
Article
Full-text available
The use of electric vehicles (EVs) provides a pathway to sustainable transport, reducing emissions and contributing to net-zero carbon aspirations. However, consumer acceptance has been limited by travel range anxiety and a lack of knowledge about EV technology and its infrastructure. This is especially the case in hot and oil-rich areas such as Ku...
Article
Full-text available
Achieving net-zero carbon in the UK by 2050 will necessitate the decarbonisation of the transportation systems. However, there are challenges to this, especially for vehicles in cities where the charging infrastructure is at its minimum. Overcoming these challenges will undoubtedly encourage electrical vehicle (EV) use, with commensurate reductions...
Article
This document provides a summary of the Showcasing Engineering for Development event held at the Royal Academy of Engineering on March 18th, detailing all the presentations and panels
Conference Paper
Full-text available
p>A region-based convolutional neural network image segmentation approach (Mask R-CNN) was applied to identification of flat rooftops from satellite imagery in the city of Jeddah in Saudi Arabia. The model was trained on a small sample of rooftops (202) digitized from a 0.5 m resolution image (covering 0.21 km<sup>2</sup>) and then was applied to a...
Article
Full-text available
The UK was the first major economy to pass a Climate Change Act in 2008, which was revised in 2019 to achieve net zero emissions by 2050. In 2019, Southampton City Council (SCC) declared a climate emergency setting ambitious targets for the city to become carbon neutral under the banner Green City Charter (GCC), which was signed by 70 city-based or...
Article
Full-text available
Saudi Arabia (SA) has a high per capita electricity consumption, predominantly supplied from fossil fuels. The residential sector accounts for about 50% of total electricity consumption with approximately 70% of which is used for air-conditioning (AC) loads. This research investigates the role of rooftop photovoltaic (PV) systems to displace coolin...
Article
Full-text available
A region-based convolutional neural network image segmentation approach (Mask R-CNN) was applied to identification of flat rooftops from satellite imagery in the city of Jeddah in Saudi Arabia. The model was trained on a small sample of rooftops (202) digitized from a 0.5 m resolution image (covering 0.21 km ² ) and then was applied to an independe...
Article
Full-text available
In a UK context, encouraging the uptake of energy efficiency measures at the household level is an ongoing challenge of ever-increasing importance. A combination of economic and psychological factors influence green investment decisions and so this study aims to determine whether online focus groups are a viable means of interacting and evaluating...
Article
The commitments made in the University’s Sustainability Strategy imply that all major decisions (‘projects’), and many day-to-day procurement activities need to consider their primary and secondary greenhouse gas (GHG) effects on Scope 1, 2 and 3 emissions: • A primary effect is a direct change in GHG emissions caused by a ‘project’ activity via G...
Article
Full-text available
Marine current energy conversion (MCEC) technologies are promising renewable energy systems with some full scale and semi-commercial turbines constructed and deployed in several countries around the world. In this work, we present the status of marine current energy and systems in China and policies geared to support these. Over the past ten years...
Article
The 'Solar assisted electrical and thermal demand reduction in Saudi Arabia Housing' research project will contribute to the Kingdom of Saudi Arabia’s (KSA’s) renewable energy targets by addressing energy consumption in buildings (60% of consumption in KSA) displacing fossil fuel supplied electrical loads energy with those driven from solar photovo...
Conference Paper
There is ongoing confusion in empirical energy efficiency and energy demand evaluation studies over the meaning, value and use of statistical significance and statistical power. This is compounded by confusion over how these concepts should be used both in designing studies and in deciding what can be inferred from them. As a consequence, sample si...
Article
With the great successes in improving rural electrification and reducing poverty, China's small hydropower (SHP) development is expected to provide a good example for other developing countries. However, recently, nearly all new SHP development plans have been halted, and many plants have been urged to shut down or even be removed. The SHP industry...
Article
This document provides the summaries of the presentations given at the 6th Africa Mini Grid Summit held virtually from the 25th—26th February 2021 by the Energy & Climate Change Division and Sustainable Energy Research Group (SERG) as part of the Fortis Unum project. The content of the summaries provide a snapshot of the papers which are being prod...
Conference Paper
Full-text available
Kingdom of Saudi Arabia (KSA) is one of the rich sunbelt countries in the world with very large potential for deploying solar photovoltaic (PV) technologies to support transitioning its dependence on fossil fuel dominated electricity sector. The hot arid climate of the country combined with its growing per capita income and cheaper electricity tari...
Conference Paper
Full-text available
This paper presents results covering the efficiency of appliances to support reduce power needs in both mini grids and upgradeable solar home systems. In addition, the research has compared the efficacy of DC vs AC mini grids at different scales. In general, the results indicated that DC mini grids could compete well at sites with a smaller geograp...
Conference Paper
Full-text available
Research indicates that school children have lower comfort levels than adults and this exacerbates the challenge of tackling the risks of summer overheating in schools without resorting to air conditioning. UN SDG 13 calls for climate action to strengthen the resilience of our cities and reduce the impact of climate change. In this work, a modern,...
Conference Paper
Full-text available
Digital technology has been presented as part of the solution to revolutionise public services, such as social care with its rising costs and demand. Here we present the outcome of an ongoing trial of CareTeam, a digital platform used during the redesign of the commission of domiciliary care for Portsmouth City Council, UK. CareTeam comprises a mob...
Conference Paper
p>This paper presents results covering the efficiency of appliances to support reduce power needs in both mini grids and upgradeable solar home systems. In addition, the research has compared the efficacy of DC vs AC mini grids at different scales. In general, the results indicated that DC mini grids could compete well at sites with a smaller geogr...
Conference Paper
Digital technology has been presented as part of the solution to revolutionise public services, such as social care with its rising costs and demand. Here we present the outcome of an ongoing trial of CareTeam, a digital platform used during the redesign of the commission of domiciliary care for Portsmouth City Council, UK. CareTeam comprises a mob...
Article
Prefabricated buildings recently became more prominent providing significant benefits including contribution to emission reductions at scale and the manufacturing of building components to high accuracy. However, in China, the proportion of prefabrication is lower than that in many developed countries. The prefabricated wall is one of the most impo...
Article
This research provides an updated energy yield assessment for a large tidal stream turbine array in the Alderney Race. The original array energy yield estimate was presented in 2004. Enhancements to this original work are made through the use of a validated two-dimensional hydrodynamic model, enabling the resolution of flow modelling to be improved...
Article
A validated numerical model of tidal flows and sediment transport around the Alderney South Banks was used to investigate the potential effects of large (300 MW) tidal turbine arrays at different locations in Alderney territorial waters. Two methods were used, firstly looking at hydrodynamic changes only and secondly modelling sediment transport ov...
Article
Full-text available
It is surprisingly difficult to define where a city center lies, yet its location has a profound effect on a city's structure and function. We examine whether city center typicality points can be consistently located on historical maps such that their centroid identifies a meaningful central location over a 500-year period in Southampton, UK. We co...
Data
Supplementary material to the publication "Tracking a city's center of gravity over 500 years of growth from a time series of georectified historical maps"
Article
Full-text available
Two years ago we launched the International Marine Energy Journal (IMEJ) in response to requests and encouragement from the marine renewable energy community to create a journal dedicated to our field of research. Four issues later and I can say that this has been a rewarding and challenging process.
Article
Full-text available
In dwellings connected to district or communal heating schemes occupants are commonly charged based on actual heat consumption, providing a direct link between heat consumption and weekly heating cost. This article investigates how the use of fixed-rate, shared-cost charging without dwelling-level metering affects the heating and controls use in co...
Conference Paper
Full-text available
p>Post-occupancy evaluation (POE) is a process that can reveal the interrelations between key building performance factors and successfully integrate indoor environmental quality, thermal comfort, functionality, environmental strategy and occupants' satisfaction. POE has become a prerequisite for several building certification systems and it is oft...
Article
Full-text available
ost-occupancy evaluation (POE) is a process that can reveal the interrelations between key building performance factors and successfully integrate indoor environmental quality, thermal comfort, functionality, environmental strategy and occupants' satisfaction. POE has become a prerequisite for several building certification systems and it is often...
Article
Full-text available
In this paper we address ongoing confusion over the meaning of statistical significance and statistical power in energy efficiency and energy demand reduction intervention studies. We discuss the role of these concepts in designing studies, in deciding what can be inferred from the results and thus what course of subsequent action to take. We do th...
Conference Paper
Driven by the goals of reducing carbon emissions, energy security and affordability in an era of a changing climate, modern housing policy was implemented to achieve efficient buildings. Such policies resulted in new and retrofitted buildings having sealed envelopes with less natural ventilation. Although this is beneficial in winter months there i...
Conference Paper
Full-text available
There is a need for new thinking in care previsions and IOT is likely to play a major role in achieving transformation of care services at lower cost. Such an approach sits at the heart of this work. Here we present the outcome of an ongoing research programme based on sensor and App interventions (trial) at homes of participants who live independe...
Article
Full-text available
Geospatial modelling is extensively used to identify suitable sites for the installation of onshore wind turbines, with the starting point being the estimate of exploitable resource. However, there are concerns that such approaches do not accurately consider the social issues surrounding such projects, resulting in large numbers of projects subsequ...
Conference Paper
Winter heating season behaviour in 1960s council tower block flats connected to a heat-network, with fixed-rate charging is presented. Heating hours delivered to radiators varied between 95 hours (2% heating season) and 4345 (99%) with a mean of 2790 (63%). Over 50% of tenants stated their heating strategy as 'Heating always on and control with TRV...
Article
Full-text available
In the context of Great Britain, onshore wind provides the most cost-effective method of renewable electricity generation. However, projects often face opposition to development based on social issues, and there are concerns that existing geospatial modelling approaches fail to fully integrate these effects into their assessment. Building upon prev...
Article
Full-text available
Electrical mini-grids can provide electrification to rural communities far from the national network. However the benefits of such schemes are disputed. We observed changes in two matched trading-centres in Makueni County, Kenya, neither of which were initially electrified. During the study a solar photovoltaic mini-grid scheme (13.5 kWp) was const...
Article
Full-text available
Continuous exposure to noise can lead to premature hearing loss, reduced cognitive performance, insomnia, stress, hypertension, cardiovascular diseases and stroke. Road noise affects the health of >125 million people in the European Union and Member States are required to map major noise hotspots. These strategic noise maps are usually derived from...
Article
In this paper we address ongoing confusion over the meaning of statistical significance and statistical power in energy efficiency and energy demand reduction intervention studies. We discuss the role of these concepts in designing studies, in deciding what can be inferred from the results and thus what course of subsequent action to take. We do th...
Article
Full-text available
We examine the impact of rural electrification on individuals and businesses within a community in order to test a resource-based theory of entrepreneurship. We show that access to electricity increases average households’ income and entrepreneurial activities. The impact of electricity on entrepreneurial activity has wide-ranging implications for...
Conference Paper
Energy efficiency is a critical component in any strategy to reduce the need for expensive GHG-intensive peak demand generation in the UK and elsewhere and reduce the need for capital intensive local distribution network reinforcement. Lighting currently consumes approximately 15% of total electricity consumption in the UK ranging from 6 to 15% for...
Presentation
SEECON 2018, Sustainable Energy Ecosystems International Conference,Co-located with first Philippine Micro-grid conference, Cebu, Philippine, 24-26 Oct 2018
Article
Full-text available
Research on the determinants of direct and indirect energy use has identified a range of relevant socioeconomic factors. However, we still know little about possible influences of people's health on their energy use. Do people in poor health use less energy because they are on lower incomes, or do they have additional domestic energy needs as they...
Article
Full-text available
The UK needs to accelerate action to achieve its 80 per cent carbon reduction target by 2050 as it is otherwise in danger of lagging behind. A much discussed question in this context is whether voluntary behaviour change initiatives can make a significant contribution to reaching this target. While providing individuals with general information on...
Conference Paper
The efficiency of residential heat supply systems is compromised when the heat load varies. Heat load variability is mainly rooted in space heating demand variations. Heating demand is expected to fluctuate the most during mid-season, as this is when users thermally adapt to warmer or colder weather, resulting in what is known as the “thermal adapt...
Poster
Full-text available
DC vs AC solar PV mini-grids for rural electrification
Article
Two years ago we launched the International Marine Energy Journal (IMEJ) in response to requests and encouragement from the marine renewable energy community to create a journal dedicated to our field of research. Four issues later and I can say that this has been a rewarding and challenging process.
Article
Full-text available
1. Introduction Cities have been described as transaction machines enabling human interaction (Stonor, 2011) with city centre retail spaces an integral part of the socio-economic fabric, acting as a centre of creativity allowing local communities to pass, relate and transact (Granger, 2010; Griffiths, 2015). Research has proven that city centre via...
Article
Full-text available
Combined Heat and Power (CHP) systems can satisfy thermal and electrical demand within cities. But, operating CHP outside of optimal conditions can result in performance below the predicted level. This study uses a 6-year dataset collected by a Local Authority (LA) from a CHP-led heat network. The results show, the studied CHP electrical output fel...
Article
Full-text available
The research presented in this paper addresses a current gap in the availability of building geometry data and provides estimates of individual building characteristics at city scale. Such data are crucial for a wide range of subjects such as modelling building energy consumption as well as regional housing market studies. However, such data are cu...
Conference Paper
Full-text available
A user-centered dynamic approach for the provision of domiciliary care services based on the sharing economy paradigm is introduced in this paper. The work stems from a collaborative research project entitled "Adult Support Digital Platform (ASDP)" linking academia, industry and a local authority (Southampton City). The approach undertaken is to li...
Book
Full-text available
The Little Book of Rezoning explores the issue of city regeneration, specifically in relation to a UK post Industrial Revolution context. The book looks at the question of how rezoning of an area can be used to deliver on wider city aspirations. Avoiding isolation and segregation of city residents is shown to be a key issue to address and one which...
Book
Full-text available
This ‘Little Book’ is a whistle-stop tour of ‘Energy and the City’. The book identifies ways to help cities achieve energy and carbon emissions savings through interventions in the urban environment that are not too drastic or expensive. The uses of energy in the city are complex and multifaceted, so we won’t be able to cover everything here. In th...