Tag Archives: energy systems integration

EDI Blog Series – Part 1: Challenging gender norms in engineering

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In the first of a series about equality, diversity and inclusivity from our energy and engineering colleagues, Dr. Nabila Rufa’I shares her experience of growing up in northern Nigeria and how that has led to a career in energy research.

About the Author:

I joined Newcastle University earlier this year, after completing my PhD at the University of Leeds. I am a research associate for the National Centre for Energy Systems Integration and have also joined the Centre for Energy.

My research interests are:

  • Techno-Economic and Environmental Impact Analysis of Low Carbon Technologies
  • Power Quality Enhancement
  • Advanced Control of Renewable Energy Systems

Passion for Power

I was born and raised in Kano State in the north of Nigeria. 


Owing to a lack of supply and up-to-date infrastructure, we would often go three or four days without power. There was even a period when power was divided and scheduled across several towns and villages. 

This meant our allocation of power could be in the middle of the night. We had to choose between sleeping or completing power-dependent tasks when we could. 

Infrastructure in Nigeria is in poor condition, and becoming worse. It’s already more than 50 years old, and population growth is a huge problem. The old infrastructure just can’t keep up with demand.

One of the first things my daughter said to me when we moved to the UK at four years old was: “Mummy, how come the lights never go off?” 

This was the main reason I became fascinated with electricity and power. How can I make a difference and fix challenges like those in northern Nigeria?

Being a Nigerian woman in Engineering

It’s common for a woman in Nigeria to be a full-time housewife. 

Some may also have a small business or part-time job alongside their domestic work. For example, making pastries or tailoring. But it’s uncommon for women to follow an academic career, let alone one in such a male-dominated field.

Personally, I didn’t think of choosing an engineering academic career as out of the ordinary. 

I was very fortunate that education was always an important part of my life. Both of my parents had a passion for education, and completed PhD’s. My grandad was the first to attend University from our village. So their collective achievements had a huge influence on my life and aspirations.

 When I started my undergraduate electrical engineering studies in Nigeria, I was the only female in a class of 70. I would occasionally receive comments such as “why are you doing this?” and “how are you in this profession?” 

I knew it bothered me. But I never knew how to respond. So I stayed quiet. 

But now I like to speak to those who question my choices. I explain that everyone has their own interests, hobbies, and career goals, There’s nothing wrong with that. Thank goodness we are making progress as a society.

Gender should not be an issue in any profession. If you have the passion, drive, and interest, why not do it? Anybody who wants to do it, can. Working as an academic in the UK, I am fortunate to be surrounded by people who are more aware, who understand gender and other EDI issues. Most of my negative encounters have been in Nigeria.

Integrating into the UK

I came to the UK to study Electrical Engineering and Renewable Energy Systems at the University of Leeds in 2012. At first, I found the UK overwhelming and intimidating. I think most people feel this way when moving to university, or away from home for the first time. 

For me, it was more difficult adjusting to educational life rather than making friends or understanding British culture. For example, I had to learn software such as MatLab at a very fast pace, whilst other students already had experience with the software. Fortunately there were lots of international students, and we helped each other. The university also offered lots of support to help with learning, engaging and adjusting to UK life in general. 

I was also fortunate enough to have my husband and brother. They moved to Leeds from Nigeria too, and after three months found our feet.

My advice

I encourage people who are being unfairly challenged to be resilient. In life, you will always find people who oppose you, or have different perspectives. But that doesn’t mean you should not enjoy what you are doing.

It’s important for your personal growth to be aware of other’s challenges, opinions, and cultures. That is education. You are part of a wider community that you need to understand. And this is something I am teaching my children.

Find out more

Energising our lives – a WES 100 Violets Challenge project – the 1st part of the story

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Engineering is key to find answers to the challenges we face today! From the climate emergency to the medical and humanitarian response to the global pandemic, collaborating engineers are playing a significant role in developing solutions.

Newcastle University researchers, Dr. Jannetta Steyn and Laura Brown have worked together on a WES 100 Violets Public Engagement Challenge project, to illustrate the solutions and ideas engineers are applying to the global need for clean and affordable energy and integrating technology to improve the quality of our every life.

About WES

The Women’s Engineering Society (WES) is a charity and a professional network of women engineers, scientists and technologists offering inspiration, support and professional development. Working in partnership, it supports and inspires women to achieve as engineers, scientists and as leaders; they encourage the education of engineering; and support companies with gender diversity and inclusion.

About WES 100 Violets Challenge

The Women’s Engineering Society’s (WES) 100 Violets Challenge competition was part of their centenary celebrations in 2020. The aim was to design and build an engaging museum exhibit that celebrates and showcases engineering/research and shares it with the public. The challenge is supported by the Ingenious Grant program from the Royal Academy of Engineering.

The exhibit idea

The aim of the exhibit was to showcase electrical, software, computing, mechanical, building and energy engineering. The Public would be able to interact with the exhibit to provide an insight into how things work and what is involved in developing the technologies that make our way of life possible without impacting the planet.

Essentially the team would be building a model of a typical house but integrated with some of the established and emerging engineering and computer science innovations that are providing a route to sustainable living.

The building model was inspired by a family history project carried out by Dr. Steyn of a house that was built by her ancestors in South Africa in 1850 in the Cape Province.

  • The prototype was designed using Inkscape
  • A lasercutter was used to cut it from 3mm Birch plywood
  • The thatch roof used coconut fibre and the ridge was cut strips from a hanging flower basket lining

The final model was informed by the research being carried out at the EPSRC National Centre for Energy System Integration (CESI) which both project team members participate in. CESI is investigating the value in taking an energy systems integration approach to the future energy system and evaluating the security, economic and environmental costs of the future energy and transport scenarios being considered for the UK.

More Technical Details about the project can be found in a series of blogs developed by Jannetta at her personal blog site: – brainwaves.jannetta.com

About the Project Team: Dr Jannetta Steyn

Jannetta is a Research Software Engineer at the Digital Institute, Newcastle University. As an experienced researcher and software engineer she has a background in data analysis, provenance and middleware programming. Jannetta does a large amount of outreach work, primarily in STEM, running a range of coding clubs and electronics clubs.

Contact:- Jannetta.Steyn@newcastle.ac.uk

http://brainwaves.jannetta.com/

About the Project Team: Laura Brown

Laura is the Centre Manager, EPSRC National Centre for Energy Systems Integration and Energy Research Programme Manager, Newcastle University. Her research tackles the challenges of integration of state-of-the-art thinking and technology into legacy and future energy systems. Laura sits on the Tees and Tyne Regional Cluster Committee of the Women’s Engineering Society and is the group leader of the SDG7 subgroup of the WES Climate Emergency Group.

Contact:- laura.brown11@newcastle.ac.uk

Elements within the project

Training and Early Engagement

To help give us expertise the tricky art of public engagement and science communication, the WES 100 Violets Challenge Group organised two expert training sessions from a wonderful team of Science Communicator experts from Science Made Simple. The trainers gave us top tips on body language, communication tools and invalable guidance on the Health and Safety considerations of planning a public exhibit. We also got the chance to meet the other winners of the 100Violets Challenge and hear about their inventive ideas.

And to practice our new science communications skills, we organised an event with the students and staff of the School of Engineering at Newcastle University. As part of our exhibit were some elements of lego energy systems, we thought the students (and staff) would have fun helping us construct the model. And for extra measure, we borrowed some resources from our colleagues at Open Lab to allow some free lego building. The event was great fun and I’m pleased our research confirmed our hypothesis – engineers love playing with lego !!! What do you think of the results?

Community build with the Engineering students from Newcastle University

Gender Equality in Engineering

We aren’t sure who coined the phrase, “if you can’t see it, you can’t be it” as a rallying call to have positive role models from all sections of society in all walks of life but we felt even in this relatively light-hearted project there was some evidence of gender bias in the system. When we procured the rather fabulous lego wind turbine we were somewhat crestfallen when the two technicians were both males! That error was quickly fixed by some immediate head swaps. We then used this as a theme in the model that all the roles in the exhibit tableau would be engineers – a non-gendered noun.

The end of the beginning

By this time the model was starting to take shape. (More technical details can be found in a series of blogs developed by Jannetta blog site: – brainwaves.jannetta.com ).

  1. We had a date in the calendar for the big WES 100 Violets Exhibition
  2. We had procured all the parts of the model and constructed all the lego components
  3. 3D printing and Laser Cutting of the House was going well
  4. The IoT Smart Home was beginning to take shape
  5. The EV had been built and was (remotely) operational
  6. We had developed some engaging learning materials to accompany our exhibit
  7. Science Made Simple team had helped us perfect our Exhibition Pitch for our intended audience
  8. We had our first engagement event with the students (guinea pigs) completed and it had went well
  9. Our fabulous colleague Faye Harland had provided an amazing schematic of our planned model (See below)
  10. We had another local exhibition planned …
  11. It was February 2020 … it was all in hand … what could possibly go wrong …

… we suspect you can guess but we will provide some more of the story next week in our next blog. To be continued …

The visualisation of our idea. Artist: Faye Harland, Newcastle University

How green is energy storage? Learnings from a CESI-funded case study

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Academics funded by the EPSRC National Centre for Energy Systems Integration (CESI) in the Centre’s first Flexible Funding Call, recently published the results of a study on the impacts of energy storage operation on greenhouse gas emissions, in the journal Applied Energy. Their work is summarised here by the lead author, Dr Andrew Pimm, and the full paper [1] is freely available to all on the journal website. The research team was led by Prof Tim Cockerill of the University of Leeds, and also included Dr Jan Palczewski of Leeds and Dr Edward Barbour of Loughborough University.

About the author: Dr Andrew Pimm

Dr Andrew Pimm is a Research Fellow at the University of Leeds investigating the techno-economics of energy storage, energy flexibility, and industrial decarbonisation. Prior to joining Leeds in 2015, he worked on the development of grid-scale energy storage technologies at the University of Nottingham, where he was involved in offshore trials of underwater compressed air energy storage.

Contact details
Email: a.j.pimm@leeds.ac.uk

Energy storage will be a key part of the future energy system, allowing the deployment of higher levels of non-dispatchable low carbon electricity generation and increased electrification of energy demand for heating/cooling, transport, and industry.

Passing energy through storage inevitably results in losses associated with inefficiencies, however previous investigations have found that operation of electricity storage can result in increased CO2 emissions even if the storage has a turnaround efficiency of 100% [2]: if the output from a relatively high carbon source (such as unabated gas or coal) is increased to charge the storage, and the output from a relatively low carbon source is reduced when the storage is discharged, then the result will be a net increase in CO2 emissions.

However, these effects had not been considered recently for Great Britain, and little attention had been given to the extent to which they vary by location. We sought to fill this gap in the knowledge through our study.

We made use of data from National Grid’s regional Carbon Intensity API and ELEXON’s P114 dataset to determine the source of electricity consumed in each of Great Britain’s 14 electricity distribution zones for each half-hour period in 2019 (annual sums shown in Figure 1).

Figure 1: The share of electricity consumption by region and source in Great Britain in 2019.

With these data, we used linear regression techniques [3] to calculate half-hourly “marginal emissions factors” for each distribution zone. These tell us the change in CO2 emissions that occurs as a result of a change to grid electricity demand, disaggregated by time and location. These regional marginal emissions factors were then used to assess the impact of electricity storage operation on grid CO2 emissions in three different storage operating scenarios:

  1. Load levelling, whereby storage is charged at times of low demand and discharged at times of high demand.
  2. Wind balancing, whereby storage is charged at times of high wind output and discharged at times of low wind output.
  3. Reducing wind curtailment, whereby storage is charged using excess wind generation that would otherwise be curtailed and discharged at times of high demand.

The resulting emissions reductions are shown for selected distribution zones and Great Britain as a whole in Figure 2. Wind balancing is the only storage operating mode that leads to increased CO2 emissions, and emissions are reduced the most when storage is operated to reduce wind curtailment in regions with high levels of fossil generation.

Across all regions and operating modes, the difference between the highest reduction in emissions and the highest increase is significant, at 741 gCO2 per kWh discharged, and is roughly equivalent to the reduction in emissions per unit achieved by fitting a coal power plant with carbon capture and storage.

Figure 2: Potential emissions reduction through storage operation for the three operating scenarios, in six selected distribution zones and Great Britain as a whole in 2019.

While electricity storage will be a key component in future low carbon energy systems, our work has shown the importance of storage location and operating mode to its operational emissions and the possible dangers of evaluating emissions using average emissions factors. We are currently using these new techniques to investigate the lifecycle emissions of storage and smart EV charging across the EU.

References

[1] Pimm AJ, Palczewski J, Barbour ER, Cockerill TT. Using electricity storage to reduce greenhouse gas emissions. Applied Energy. 2021;282:116199.
[2] Denholm P, Kulcinski GL. Life cycle energy requirements and greenhouse gas emissions from large scale energy storage systems. Energy Conversion and Management. 2004;45:2153-72.
[3] Hawkes AD. Estimating marginal CO2 emissions rates for national electricity systems. Energy Policy. 2010;38:5977-87.

Achieving net-zero in the UK through an integrated energy system

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The Communities Secretary, Rt Hon Robert Jenrick MP, recently rejected permission for an open cast mine near Druridge Bay, stating that the proposal “is still not environmentally acceptable”. This announcement follows a lengthy decision process and extensive media coverage, including a Public Inquiry and an appeal to the High Court. In this blog CESI Director, Dr Sara Walker, comments on the case which was supported by evidence presented by CESI’s previous Director, Prof Phil Taylor on CESI’s whole systems approach to energy systems integration.

Druridge Bay, Northumberland

About the author: Dr Sara Walker

Dr Sara Walker is Director of the EPSRC National Centre for Energy Systems Integration, Director of the Newcastle University Centre for Energy and Reader of Energy in the University’s School of Engineering. Her research is on energy efficiency and renewable energy at building scale.

Contact details
email: sara.walker@ncl.ac.uk

In 2014, a proposal was put forward to remove 3 million tonnes of coal from an opencast mine at Highthorn, close to Druridge Bay, on the Northumberland coast. The proposed developer, HJ Banks & Co Ltd, argued coal fired power stations are essential for the security of the UK’s energy supply and in July 2016, planning permission for the mine was approved by Northumberland County Council.

In a landmark move, central Government called a Public Inquiry on the grounds of climate change – the first time any planning permission decision has been called to inquiry on this basis.

In March 2018, the Communities Secretary Sajid Javid stated he had concluded the project should not go ahead on the grounds that it would exacerbate climate change. This rejection was the first time any planning permission decision has been refused on this basis, setting a precedent for all future applications.  This was seen as a significant step in taking tackling climate change seriously, showing the UK to be leading in this regard.

Following the announcement of the planning rejection, Banks lodged an appeal in the High Court.  The High Court found in favour of Banks in October 2018, returning the case to the Communities Secretary to reconsider the arguments presented.

At the Planning Inquiry, the expert witness for Banks argued that if coal fired power stations are phased out, a significant number of new gas fired power stations would be required, providing 7GW of gas generation. They also claimed other cleaner sources of energy cannot be relied upon as a consistent source of energy. Wind power, for example, provides an intermittent source of energy as the wind does not always blow. Similarly, the sun does not always shine, so photovoltaic systems will not generate sufficient energy. For these reasons, opening the new mine would have been an important step in ensuring that the UK maintains a good supply of coal for its power stations. However, there is no single source of fuel that provides the energy to satisfy the whole of the UK’s energy requirements. Instead, it is essential to take a whole systems approach when considering the UK’s energy mix.

The Department for Business, Energy and Industrial Strategy (BEIS) collates data on the UK’s energy generation mix.  The latest figures were released in July 2020 [1] and compare data for 2019 against previous years.  The shares of electricity generation by fuel in 2018 and 2019 are illustrated in Figure 1. These show that gas generated electricity increased slightly to 40.6%.  Electricity from renewables (wind, hydro, solar, wave, tidal and bioenergy) achieved a record high of 37.1% (121TWh), which is the first time renewables have provided over a third of the total generation mix. During the same period, the share of electricity generated from coal reduced to 2.1% (6.9TWh).  This represents a record low, down 59% compared to 2018.  The figures show that coal is declining in importance and that we have many options to replace it.

Figure 1 The share of electricity generation by fuel in 2018 and 2019 [1]

An integrated energy system

In his expert witness testimony to the Public Inquiry, CESI’s former Director and current Associate Director, Professor Phil Taylor, emphasised the need to take a whole systems view, highlighting CESI’s research into an integrated energy system. The UK can phase out coal-fired power stations by increasing the utilisation of existing gas facilities plus a small increase in capacity in power from gas and combining this with power produced from renewables such as wind, biomass and PV. We can store energy when we have more than is needed, or when there is too much for network cables to carry, and then release it when is required. Britain also imports electricity via physical links known as interconnectors. The UK energy regulator, Ofgem, forecasts that planned interconnector projects will lead to a capacity of 7.3GW by 2021 (compared to total GB system generation capacity of 77.9GW in 2019). In addition, the electricity demand could be managed through Demand Side Response (DSR), where consumers are given incentives to reduce their energy demand by reducing usage or turning off non‐essential items when there is a peak in electricity demand.

CESI evidence therefore showed that, by balancing supply and demand on the electricity grid, we can phase out coal and reduce the need to build new power stations. An additional benefit of decarbonising our energy system more rapidly is that this offers the opportunity to also decarbonise our transport and heat sectors.

“We are delighted that evidence provided by the National Centre for Energy Systems Integration has supported this landmark decision to reject further extraction of coal on grounds of Climate Change. Our work has clearly demonstrated that a Whole Systems approach with Systems Integration can enable us to decarbonise our energy systems whilst maintaining reliability and security of supply”

Director of CESI, Dr Sara Walker

Net Zero

In September 2020, the Communities Secretary, Rt Hon Robert Jenrick MP, rejected the open cast mine, stating that  the “substantial extent of the landscape harm means that the proposal is still not environmentally acceptable, nor can it be made so by planning conditions or obligations”. 

This decision will help the UK to achieve its target to phase out coal by 1 October 2024, announced by Prime Minister Boris Johnson in February 2020. It will also the support the ambitious aims of cutting carbon emissions targets set by councils in the North East of England.  These include Northumberland County Council, which has set the target of being carbon neutral by 2030.  The implications of this decision for our future energy supply are significant and will affect us all.

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  1. Digest of United Kingdom Energy Statistics 2020, Department for Business Energy & Industrial Strategy https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/924591/DUKES_2020_MASTER.pdf [accessed 9/10/2020]