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Can South Africa embrace renewable energy from the sun?

Source: BBC

Coal is still South Africa’s primary source of electricity, despite the fact that many areas of the country average more than 2,500 hours of sunshine a year.

By contrast, the UK averages just 1,500 hours of annual sunshine – so, for South Africa to make better use of this abundant energy source to generate its own electricity would make a lot of sense.

Over the next decade this energy supply picture could change quite radically.

In June it emerged that South Africa’s state power utility Eskom, Africa’s biggest greenhouse gas emitter, is putting forward a $10bn (£7.4bn) plan to close the vast majority of its coal-fired power stations by 2050 and embrace renewable energy.

During the COP26 climate summit, the US, EU, UK, Germany and France pledged $8.5bn over the next five years, to assist South Africa’s big plan to go green.

Eskom’s chief executive André de Ruyter says the COP26 announcement will enable South Africa to meet its “new and ambitious” targets.

But many question whether Eskom is capable of delivering such a huge transformation.

The company is staggering under a $27bn debt burden, which has hampered investment in its already ailing infrastructure. Rolling blackouts, known as “load-shedding”, are a common occurrence across the country.

It is clear something needs to be done. South Africa is the world’s 12th highest emitter of carbon dioxide and the highest emitter in Africa, according to the Global Carbon Atlas.

Even if Eskom decided to stick with coal, the company says it would need more than $20bn to make its ageing coal power plants compliant with South Africa’s current minimum emissions standards.

So, some kind of move to renewables seems inevitable, but industry insiders agree with Mr de Ruyter that his plan is ambitious.

Sharief Harris, head of development at Red Rocket Energy, a private green energy firm says that if there is any hope of transitioning to renewable energy, Eskom first needs to address its failing infrastructure and financial challenges.

Mr Harris also points out that as well as building solar plants and wind farms, Eskom would have to spend more money to connect them to the electricity network.

“Serious upgrades to the electricity grid will be required to connect any capacity to the grid and $10bn will not be sufficient,” he warns.

The power giant has acknowledged that, and recently estimated it would need around $35bn over the next 15 years, to make a successful transition to renewable power.

The hope is that there will be a ripple effect from the initial commitment of $8.5bn from the US and Europe, encouraging future investment from foreign private investors.

Meanwhile, South Africa’s transformation to greener energy might get some help from independent energy firms.

Until recently, restrictions and regulations on private power production hindered the solar industry’s growth in South Africa. But this year regulation changes have allowed commercial power firms to build much bigger power stations – up to 100 megawatts.

Red Rocket currently has two solar plants in operation in Africa and is planning further expansion.

The company also helped build one of Africa’s biggest solar power plants, the 75 megawatt Kathu plant in South Africa’s Northern Cape, which covers 800 hectares (2,000 acres) – it can produce enough electricity for 73,000 homes in the surrounding communities.

But South Africa will need hundreds more solar power plants, if it is to end its reliance on coal.

The switch to solar also faces significant political challenges. In a country with an official unemployment rate of 34%, there are questions over whether a transition to solar will be good or bad for the country’s workforce.

South Africa’s Energy Minister, Gwede Mantashe, has raised concerns about job losses resulting from the shutdown of multiple coal power plants. He referred to the switch to solar as “economic suicide”.

Eskom has challenged this assumption, and Mr De Ruyter says that rolling-out the solar infrastructure could generate over 300,000 jobs in South Africa.

In an attempt to address these uncertainties, the nations investing in South Africa’s green transition, say a task force will be established to create “green and quality jobs”.

It is hard to compare the jobs generated by solar power versus coal. Coal power stations provide job opportunities throughout the facility’s operational life, while renewable technologies see large numbers of jobs created during the initial construction phase, but require fewer workers once operational.

Yet, a more stable energy supply would benefit the country’s economy as a whole and might encourage more foreign investment, which would be good for employment.

The Solar Green Academy, which has five training centres across South Africa, has already seen an uptick in demand for its courses in anticipation of further investment. The academy provides technical training for people hoping to build a career in the solar energy industry.

Amanda Dzivhani from the Academy says that solar is increasingly important because it has “opened up space for people to create their own job opportunities, or for people to create job opportunities for others”.

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Could electric vehicles be the answer to energy flexibility?

Rolf Bienert, Managing and Technical Director, OpenADR Alliance

Last year, what was the Department for Business, Energy & Industrial Strategy and Ofgem published its Electric Vehicle Smart Charging Action plans to unlock the power of electric vehicle (EV) charging. Owners would have the opportunity to charge their vehicles while powering their homes with excess electricity stored in their car.

Known as vehicle to grid (V2G) or vehicle to everything (V2X), it is the communication between a vehicle and another entity. This could be the transfer of electricity stored in an EV to the home, the grid, or to other destinations. V2X requires bi-directional energy flow from the charger to the vehicle and bi- or unidirectional flow from the charger to the destination, depending on how it is being used.

While there are V2X pilots already out there, it’s considered an emerging technology. The Government is backing it with its V2X Innovation Programme with the aim of addressing barriers to enabling energy flexibility from EV charging. Phase 1 will support development of V2X bi-directional charging prototype hardware, software or business models, while phase 2 will support small scale V2X demonstrations.

The programme is part of the Flexibility Innovation Programme which looks to enable large-scale widespread electricity system flexibility through smart, flexible, secure, and accessible technologies – and will fund innovation across a range of key smart energy applications.

As part of the initiative, the Government will also fund Demand Side Response (DSR) projects activated through both the Innovation Programme and its Interoperable Demand Side Response Programme (IDSR) designed to support innovation and design of IDSR systems. DSR and energy flexibility is becoming increasingly important as demand for energy grows.

The EV potential

EVs offer a potential energy resource, especially at peak times when the electricity grid is under pressure. Designed to power cars weighing two tonnes or more, EV batteries are large, especially when compared to other potential energy resources.

While a typical solar system for the home is around 10kWh, electric car batteries range from 30kWh or more. A Jaguar i-Pace is 85kWh while the Tesla model S has a 100kWh battery, which offers a much larger resource. This means that a fully powered EV could support an average home for several days.

But to make this a reality the technology needs to be in place first to ensure there is a stable, reliable and secure supply of power. Most EV charging systems are already connected via apps and control platforms with pre-set systems, so easy to access and easy to use. But, owners will need to factor in possible additional hardware costs, including invertors for charging and discharging the power.

The vehicle owner must also have control over what they want to do. For example, how much of the charge from the car battery they want to make available to the grid and how much they want to leave in the vehicle.

The concept of bi-directional charging means that vehicles need to be designed with bi-directional power flow in mind and Electric Vehicle Supply Equipment will have to be upgraded as Electric Vehicle Power Exchange Equipment (EVPE).

Critical success factors

Open standards will be also critical to the success of this opportunity, and to ensure the charging infrastructure for V2X and V2G use cases is fit for purpose.

There are also lifecycle implications for the battery that need to be addressed as bi-directional charging can lead to degradation and shortening of battery life. Typically EVs are sold with an eight-year battery life, but this depends on the model, so drivers might be reluctant to add extra wear and tear, or pay for new batteries before time.

There is also the question of power quality. With more and more high-powered invertors pushing power into the grid, it could lead to questions about power quality that is not up to standard, and that may require periodic grid code adjustments.

But before this becomes reality, it has to be something that EV owners want. The industry is looking to educate users about the benefits and opportunities of V2X, but is it enough? We need a unified message, from automotive companies and OEMs, to government, and a concerted effort to promote new smart energy initiatives.

While plans are not yet agreed with regards to a ban on the sale on new petrol and diesel vehicles, figures from the IEA show that by 2035, one in four vehicles on the road will be electric. So, it’s time to raise awareness the opportunities of these programs.

With trials already happening in the UK, US, and other markets, I’m optimistic that it could become a disruptor market for this technology.

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Navigating the commercial vehicle sustainability conundrum

By David Wilson, Business Development Advisor, NEOL Copper Technologies Ltd.

As road transport companies implement their environmental, social, and governance (ESG) strategies to ensure they are contributing positively to the planet and society while also being run ethically and transparently, they are faced with a conundrum.

With increasing regulatory and social scrutiny on carbon emissions, the transportation industry which is the second largest (20%) contributor to carbon emissions worldwide, faces growing pressure to meet the near-term net-zero targets, requiring an immediate move to being more sustainable.

The industry has recently undergone significant changes that have impacted the cost of running a successful business. Factors such as high fuel costs, increased labour expenses, and maintenance costs, as well as excessive costs to renew the fleet, have all contributed to this. Additionally, businesses now need to consider how to incorporate the future of electric and autonomous vehicles.

The future of electric vehicles

ESG strategies such as investing in fuel-efficient, low-emission technologies and adopting alternative sustainable fuel sources are essential to reduce carbon emissions, air pollution, and preserve natural resources, while protecting the industry’s long-term viability.

In order to make the industry more sustainable electric trucks will need to play a significant role. The migration to electric trucks is also an option for the fleet manager but there is presently a narrow choice of vehicles, an associated high procurement or lease cost, and a lack of public charging infrastructure.

Most commercial vehicle OEMs (original equipment manufacturers) now offer a range of electric trucks that are specifically designed for zero-emission deliveries. However, the use of heavy-duty electric trucks for long-range transport is not feasible yet, mainly because the batteries and charging power are insufficient. The large-scale adoption of electric trucks is going to take time, and it may not be until 2035 – emphasizing that the electrification of the trucking industry is around 10 years behind passenger cars in terms of electrification.

Transitioning away from fossil fuel is a complex challenge for fleet managers. It will take time for a complete shift of the 600,000+ heavy good vehicles currently navigating the UK roads to electric power. To address the issue promptly and enhance the fuel efficiency and sustainability of the current fleet, proactive measures are imperative to optimise their performance and curtail emissions immediately.

Addressing the sustainability conundrum

The vast majority of today’s commercial vehicles on the road today are powered by internal combustion engines (ICE) that run on diesel fuel. Since the first introduction of European exhaust emission standards in 1993, more stringent guidelines have been released every four to five years to reduce and eliminate harmful pollutants such as carbon dioxide, nitrogen oxide, hydrocarbons, and particulate matter from new vehicles sold in the EU.

 To meet the latest Euro VI (2015) emission standard, trucks are now typically equipped with diesel particulate filters (DPF) to capture particulate matter and lubricant ash, and selective catalytic reduction (SCR) technology to convert harmful nitrogen oxides to nitrogen and water, and exhaust gas recirculation (EGR) technology to lower the combustion temperature, reduce nitrogen oxides, and improve engine efficiency.

Euro VI engines are advanced and highly sophisticated systems that offer dependable and efficient performance. Together with the correct low-SAPS (sulphated ash, phosphorous, and sulphur) and low viscosity e.g. SAE 5W-30 engine lubricant, the fleet manager will benefit from reduced fuel consumption and warranted protection of the engine and exhaust aftertreatment devices (ATD).

As engine hardware has advanced, so has the lubricant technology. However, even with the latest low-viscosity oils, levels of fuel saving at 1-1.5% (compared to higher-viscosity oils) have not reached its full potential. Moreover, the continued use of metal-containing detergents and ZDDP (zinc dithiophosphate) antiwear components risk negatively impacting the performance and efficiency of the DPF, as well as the precious metal catalysts & sensors in the SCR units. This can lead to unplanned service and replacement of one or more of the ATDs, causing costly downtime for fleet managers.

 Euro 7 emissions regulations will be implemented in a few years, and it will require ATDs to perform as new for 200,000 km or 10 years. Therefore, the lubricant industry is facing a new challenge of lowering the levels   in engine lubricants even further.

Reducing unexpected downtime with technical lubricants

The fleet manager has access to high-quality diesel engines and lubricant technology, but they are concerned about unplanned mechanical issues due to the wear and tear of components from extended use. Additionally, the blockage of DPFs (which creates backpressure and increases fuel consumption) and the possible failure of sensors may lead to faults being registered on the truck’s OBD (on-board diagnostics) computer systems, still causing great concern for managers as they strive for maximum productivity and profitability.

Whilst the use of fossil fuels will remain crucial to power heavy-duty diesel engines, we must wait for further advancements in electrification. However, we can improve the lubricants currently being used to make commercial vehicles more efficient, with lower emissions and greater fuel economy. By doing this, we can reduce unwanted unplanned downtime for repairs or component replacements.

It is easy to see the clear link between reducing wear to increase the longevity of your machine assets. Additionally, by reducing friction, we can improve fuel savings which helps to increase efficiency, all essential steps towards acting more sustainably and making changes for a better future.

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Streamlining the road to net-zero through carbon reporting

By Paul Rekhi, Head of Carbon Services at Advantage Utilities

Understanding the evolution of our carbon footprint is key to comprehending the urgency and significance of emission reduction today. According to the Global Carbon Project, between 2011 and 2020, carbon dioxide emissions averaged at 38.8 billion tons per year, but our land and ocean sinks which convert this CO2 have only been able to support 21.7 billion tons yearly. This deficit in emissions is what has caused the atmospheric CO2 growth rate which in turn has led to global warming and climate change. These are defining issues for businesses, hence the need to report and then reduce carbon emissions is more important than ever. I recently hosted a webinar where I discussed this very point, advising businesses on how to implement a credible plan to achieve net-zero as well as lower energy costs. 

In this article, I will share those insights, discussing how ESG emerged as a key consideration for businesses today. I will then outline how businesses can go about measuring their carbon by using the carbon-ethics cycle which includes the steps they should take to streamline the road to net-zero via effective carbon reporting.

Paul Rekhi, Head of Carbon Services

The distinction between net-zero and carbon neutral

There is an important distinction to be made about what we mean by ‘net-zero’ and ‘carbon neutral’. Net-zero involves counting emissions, then organically removing these emissions from the business. What carbon neutrality involves is the same accounting principle of greenhouse gas (GHG) accounting but also taking accredited carbon offsets to help counteract GHGs released and reaching a zero-carbon footprint. However, to get to true net-zero you have to account for it – that means having oversight into your scope 1, 2 and 3 emissions. 

Scope 1 emissions are direct emissions such as company facilities and vehicles. Scope 2 emissions primarily involve indirect emissions stemming from purchased electricity, heating and cooling. Finally, Scope 3 emissions involve everything else your business does; this starts with upstream activities, everything that happens before your organisation – ‘from cradle to gate’, including bought goods, employee commuting and leased assets,  through to  downstream activities, everything that happens after – from gate to grave, such as processing of solid products, transportation and investments.

The importance of carbon reporting

As corporate guidance emerged and the damaging effects of excess carbon emissions were accepted, this led to large companies being required to report on their scope 1 and 2 emissions. If an organisation meets two or more of the following criteria; a turnover or gross income of £36 million or more; balance sheet assets of £18 million or more; or 250 employees or more; then they must stay compliant with UK government regulations such as theStreamlined Energy and Carbon Reporting (SECR) and Energy Savings Opportunity Scheme (ESOS). Of the 5.5 million UK businesses, only 7,000 fall into the category of having over 250 employees. 

But this is not just a checkbox exercise, it is a strategic move. Proper carbon reporting not only ensures compliance but also positions your organisation as a responsible and forward-thinking entity, which is why it has become widely accepted for organisations to establish an ESG department.

The carbon-ethics cycle

To enable businesses to track their carbon emissions, we created our carbon-ethics cycle, to enable organisations to measure, manage and reduce their emissions as efficiently as possible. 

Our starting point is to understand businesses – their sites, their objectives and their needs. From here, businesses should measure and certify their scope 1, 2 and 3 emissions which act as an organisation’s benchmark on how much carbon was associated with their business, within a given period – usually by financial year. Without first measuring emissions, you cannot manage emissions, making progress towards net-zero very difficult. 

Once we have that benchmark, consultation with each department of the business is crucial to effectively reducing emissions, looking at how energy is used (when and where) as well as how it is procured. From there, technology such as solar PV, heat pumps and voltage optimisation, can be used to make energy savings and increase sustainability. 

Reducing/offsetting emissions may also be necessary if reducing emissions is not possible. The final step is to report and re-certify their emissions, allowing comparisons to be made to benchmark data. And this is an ongoing process, so the cycle can begin again on the journey to net-zero. But what this cycle achieves is a streamlined process that enables the most progress to take place.

So where are we right now? With large companies required to report on their carbon, other companies are also taking it upon themselves to expand their own reporting. There are several types of clients that get in touch with us to measure their carbon and reduce their emissions. One of them are the large companies, but others include organisations with supply chain partners requesting carbon data, companies with competitors measuring carbon emissions, environmentally conscious companies as well as others.    

A structure to measuring carbon within your organisation

Businesses all start from the same position: having to change their processes and behaviour in order to measure carbon. Progress is only made by building upon this foundation, with Standard Operating Procedures (SOPs) offering the next step in ensuring compliance throughout the business. On top of that, policies are overlaid which runs and controls the business.

But there are also two ‘floors’ that are missing in this structure. The first of these is accounting, reporting and marketing. Without measuring and accounting what it is that you are doing as a business, the effects of your progress will be minimal, which is why marketing is also crucial to enhancing brand image and customer loyalty. The final step is planning and execution, fundamental to realising your organisation’s goals. This cannot be forgotten as this is where businesses must ensure they have all the experience, expertise, knowledge and skills in place to report for what they do.

To conclude, businesses implementing carbon reporting will find that progress towards net-zero is far easier. The need to reduce emissions is clear and the systematic measurement, management, and subsequent reduction of emissions is made a tangible possibility through the streamlined and efficient approach outlined in the carbon-ethics cycle. A collaborative and structured carbon reporting process allows businesses to meet reduction targets successfully, ultimately leading to the attainment of net-zero status.

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