Renewable Energy Integration: Engineering Solutions for a Sustainable Future

on 29/02/2024

One crucial technical difficulty that is essential to a sustainable energy future is the integration of renewable energy methods into current power systems. The increasing need for sustainable energy has put engineers to work creating solutions that integrate renewable energy sources such as geothermal, hydro, wind, and solar power into the current energy infrastructure. Consideration must be given to the technical, financial, and regulatory aspects of this shift in a comprehensive manner. Optimizing the grid’s integration of sporadic renewable energy sources, such as wind and solar electricity, is a problem for engineers. Because of their variability, creative energy storage methods are required to maintain a balance between supply and demand. Leading-edge engineering solutions to deal with the fluctuating nature of renewable energy production include battery technology, sophisticated systems for storing energy, and smart grid technologies. When integrating renewable energy, the stability and dependability of the electrical system are vital factors. The variability brought about by renewable sources requires engineers to design and execute grid management structures and systems that can handle it. This entails creating sophisticated control algorithms, models for energy forecasting, and grid storage options to keep the electrical infrastructure steady and robust. A significant engineering solution for successful integration of renewable energy is the development of decentralized and interconnected energy networks. In order to improve the grid’s flexibility and dependability, engineers can build a network of dispersed energy resources. By lowering transmission losses and increasing the power system’s overall resilience, this strategy makes it possible to use renewable energy more effectively. Upgrades to the current transmission as well as distribution infrastructure are also required for the incorporation of renewable energy sources. In order to distribute electricity from remote renewable energy installations to urban centers, engineers must develop and execute reliable, efficient grid systems. This calls for the construction of smart grids, high-capacity transmission lines, and sophisticated monitoring and control systems. In the engineering process, one of the most important factors to take into account is the economic feasibility of integrating renewable energy. The goal for engineers is to reduce the cost of renewable energy technologies so that they can compete more favorably with conventional fossil fuel sources. To attain economies of scale and raise overall cost-effectiveness, this entails improvements in the design, production, and implementation of renewable energy systems. The intermittent nature of renewable energy sources is addressed in large part by energy storage technology. In order to store surplus energy during times of high generation and discharge it during times of high demand, engineers are diligently working on novel storage methods, such as improved batteries, pumped hydro preservation, and thermal energy storage. The inherent unpredictability of renewable energy sources is mitigated and grid stability is enhanced by these storage solutions. One important technical approach to maximize the integration of renewable energy is the use of smart grid technologies. With the use of smart grids, the electricity system can be monitored, controlled, and communicated with in real time, facilitating dynamic changes to balance supply and demand. By facilitating more effective administration of dispersed energy resources, this intelligent grid architecture improves the efficiency and dependability of renewable energy integration. Multiple renewable energy sources combined into a single hybrid system offers a comprehensive engineering solution. Engineers can design more dependable and consistent power generating profiles by combining complimentary sources, including wind and solar. By using this method, the total efficiency of renewable energy systems is increased and energy output is maximized. In isolated or off-grid locations in particular, micro grid systems provide robust and targeted energy solutions. Micro grids are scalable and decentralized methods of integrating renewable energy that are designed by engineers to work either independently or in tandem with the main power grid. These smaller-scale systems support larger environmental initiatives and improve energy security. Efficient management and observation mechanisms are essential for maximizing the efficiency of renewable energy resources. Engineers create complex automation technologies and algorithms to effectively monitor and regulate the functioning of renewable energy plants. Real-time changes, predictive maintenance, and the best possible use of renewable resources are made possible by these technologies. Global attempts to switch to renewable energy depend heavily on international cooperation and standards. To enable smooth integration across various energy systems, engineers work to create common technological criteria, interoperability protocols, and cooperative research projects. These initiatives guarantee a unified strategy for the integration of renewable energy on a worldwide basis. Engineering issues, economic factors, and legal frameworks must all be taken into account in a holistic and multidisciplinary strategy to integrate renewable energy. The seamless integration of renewable energy sources into the current energy infrastructure is made possible by the creative solutions developed by engineers, which range from technologies for storing energy to smart grid systems. Future developments in engineering will continue to influence the field of renewable energy integration as the world moves toward a more sustainable energy future.

KE, Hubco sign MoU to off take Thar Coal-fired electricity

on 29/02/2024

Committed to enabling access to affordable power and bolstering the energy security for its customers, the CEO of K-Electric (KE) Mr. Moonis Abdullah Alvi, and the CEO The Hub Power Company Limited (HUBCO) Mr. Kamran Kamal, signed a Memorandum of Understanding (MoU) to explore the opportunity for off-take of electricity following the conversion of HUBCO’s Hub Plant to local Thar coal.
This is in line with KE’s long-term strategy to induct power generation from indigenous sources into its energy mix. In this regard, the company is exploring the viability of Thar coal-based power generation projects. HUBCO’s Hub Power station is a 1292 MW (4 X 323 MW), residual fuel oil-based plant, which has maintained high standards of operations since 1997. Both companies have shown their commitment to working collaboratively towards conducting the requisite efforts needed for the timely conversion and integration of the project with KE’s network.
Sharing his thoughts on the occasion, CEO KE stated, “Today’s signing is another reflection of our intent to tackle the energy trilemma head-on, enabling access to affordable and reliable power to our growing customer base. I feel great honor to mention that KE has proven itself to be a preferred off-taker for independent power producers in Pakistan.
This is only due to our superior creditworthiness and our history of fulfilling the commitments made with our stakeholders. We are looking at a future where we substitute our reliance on imported fossil fuels with indigenous sources, creating a more resilient power value chain. This is also the driving force behind the Power Acquisition Program that we have submitted with our Regulator, which is balancing baseload requirements with renewable energy.”
CEO of HUBCO Mr. Kamran Kamal stated “The proposed conversion of Hub power plant to Thar coal will play a crucial role in decreasing reliance on imported fuels. While offering a sustainable energy solution for the people of Karachi, this project will also serve the continued use of the country’s legacy power generation assets. This initiative is in line with our commitment to securing indigenous, reliable, and affordable energy supply and contributing towards achieving energy security for the country. The envisaged project will be executed after conducting required feasibility studies and obtaining all necessary corporate and regulatory approvals.”
On the occasion, KE’s Chief Financial Officer Mr. Aamir Ghaziani, Chief Strategy Officer Mr. Shahab Qader, and Head of Business Development Mr. Mudassir Zuberi were present, accompanied by Chief Financial Officer Mr. Muhammad Saqib and Vice President Operations Mr. Amjad Raja from HUBCO. Other senior members from both organizations were also present.

Following morecost-effective path to energy security

on 29/02/2024

For the energy sector, Pakistan passed a federal law establishing the Pakistan Council of Renewable Energy Technologies in 2010 and another law promoting energy efficiency and conservation in 2016.
In terms of an institutional framework, the government established the Alternative and Renewable Energy Board in 2010, empowered to develop national strategies, policies, and plans for the utilization of alternative and renewable energy resources to achieve the targets set by the federal government.
In 2013, the Government of Pakistan issued the National Power Policy that provides an overall direction for energy policy in the country. It identified challenges including a huge supply-demand gap, increasing prices due to dependence on thermal fuel sources, and energy inefficiency; it set a target of reducing the supply-demand gap to zero and reducing transmission and distribution losses from approximately 23–25 % to 16% by 2017. This aim has clearly not been achieved to date, as Pakistan has not reached 100% access to energy across the country.
In 2019, a new policy on alternative and renewable energy was adopted. For the first time, the government set a quantifiable target of 20% contribution from green energy sources including solar, wind, and bagasse (a type of biofuel) by 2025 and 30% by 2030. In December 2020, then–Prime Minister Imran Khan announced at the Climate Ambition Summit that Pakistan would not build new coal plants. However, the challenge was to formalize this intention, and, in fact, several coal plants that were already permitted or under construction have continued to be developed.
The Government of Pakistan also approved a national-level policy on electric vehicles in 2019 with ambitious targets of 30% and 90% share in the sale of passenger vehicles and heavy-duty trucks by 2030 and 2040, respectively.
Recent developments
In February 2021, the Government of Pakistan released the National Electricity Plan that identified three main goals for the power sector – access to affordable energy, energy security, and sustainability. While it did not quantify any goals, the policy stressed diversification of the fuel mix in the country and optimizing energy resource utilization.
In the same year, Pakistan updated and submitted an enhanced NDC that committed to an overall 50% reduction of GHG emissions compared to BAU by 2030. Within this target, 15% of emissions reductions are unconditional, and the remaining 35% are conditional on international support and finance. This target thus represents an enhancement in ambition, in part because it includes an unconditional target for the first time. The NDC also emphasized mitigation targets including increasing the share of renewable energy in total electricity generation to 60% by 2030, placing a moratorium on new coal power plants, and generating no power from imported coal. There was also a target of increasing the share of electric vehicles (EVs) in all new vehicles sold to 30%. Pakistan stressed the need for international support to achieve its ambitious energy transition plan, which was estimated to cost USD 101 billion by 2030, and an additional USD 65 billion by 2040.
During COP26 in Glasgow, Scotland, in November 2021, Pakistan joined the Global Methane Pledge, agreeing to take voluntary actions to contribute to a collective effort to reduce global methane emissions at least 30% from 2020 levels by 2030.
Subsequently in 2022, the National Climate Change Policy was updated, highlighting a framework for the conservation of energy and reduction of GHG emissions from various heavy-emitting sectors including energy and the industrial sector (cement, steel, textile, and petrochemicals).
In 2022, the energy crisis worsened due to the country’s heavy dependence on imported fossil fuels. In 2023, this led to country-wide power blackouts. As global fuel prices skyrocketed owing to the Russian invasion of Ukraine, Pakistan fell further into debt to meet its energy needs. Currently, 40% of its total energy supply is met with fossil fuel imports.
With the aim of reducing dependence on imported fossil fuels, the Government of Pakistan adopted framework guidelines on fast-track solar photovoltaic (PV) initiatives in March 2022. The program has been designed to replace fossil fuel–based power capacity with approximately 10 GW of solar power. However, no bids have yet been received. This could be the result of political uncertainty and a high-risk environment in the country’s power sector. According to the latest Economic Survey for 2022–2023, the share of alternative and renewable energy in the country’s installed capacity rose from zero in FY2014 to 6.8% in the current fiscal year. A draft policy is currently pending approval with the National Electric Power Regulatory Authority (NEPRA), which has projected the country’s peak demand at 41,338 MW and an installed capacity of 69,372 MW by 2031 as the base case. Through this policy, Pakistan aims to generate 60% of its generation capacity from indigenous clean energy technologies.
As the chair of the G77 in 2022, Pakistan leveraged its unique position to advocate for the establishment of a dedicated “loss and damage” fund at COP27 in Sharm el-Sheikh, Egypt. The country led the inclusion of loss and damage finance on the COP27 agenda for the first time and emphasized the urgent need for financial support to address the devastating impacts of climate catastrophes, such as floods and heat waves. This was instrumental in making the loss and damage fund one of the key successes of COP27, building the basis for governments to set up new funding arrangements and financially back developing countries.
In early 2023, taking a complete U-turn from the earlier commitment of a moratorium on new coal, the nation declared its plans to quadruple domestic coal-fired power, in a bid to reduce its dependence on imported gas to meet its energy needs. Pakistan’s coal expansion has been primarily driven by bilateral support from China in the form of the ambitious multi-billion-dollar China-Pakistan Economic Corridor (CPEC) begun in 2013; 90% of the current coal capacity has been backed by China. Marking the 10-year anniversary of CPEC in July 2023, China and Pakistan signed several agreements to expand and expedite cooperation on the various projects that are currently under development with this partnership. Through the CPEC, China has invested around USD 25 billion and is projected to invest around USD 62 billion into the Pakistani economy by 2030. However, it is not clear how Pakistan intends to fund its coal expansion plans, as there might not be any support under the CPEC due to China’s “no new coal overseas” pledge in 2021.
In August 2023, Pakistan submitted its National Adaptation Plan (NAP) to the United Nations Framework Convention on Climate Change (UNFCCC), in light of ongoing domestic political and economic turmoil. NAPs form an important part of the Paris Agreement regime, especially for climate-vulnerable countries such as Pakistan. Pakistan’s NAP reflects the country’s priority to address climate change–related challenges, especially in the aftermath of the 2022 floods and frequent heat waves in the country. It also comes amid reports that climate-related risks and environmental degradation could reduce Pakistan’s GDP by at least 18% to 20% by 2050. The plan aims to center development around adaptation and mentions the urgent need to attract climate financing, engage the private sector, and ensure sustainable funding in the long term. However, it does not provide information on the details of these strategies or the necessary implementation steps.
Reading between the lines
While Pakistan’s updated NDC is more ambitious than the previous 2016 submission — in part due to the addition of an unconditional target — the country could face considerable challenges in achieving these new targets. Meeting them would also require Pakistan to substantially reevaluate its institutional framework and deal with the economic crisis, only then could it focus on any effective climate action. To put things into perspective, in 2022, Pakistan’s external debt amounted to 34.7% of the country’s GDP. Such crippling levels of sovereign debt act as a huge obstacle for the country to meet its NDC targets. Rising sovereign debts have a direct impact on climate-vulnerable countries’ economic capabilities, in the form of challenges to accessing finance due to low credit ratings and increased risk perception by investors.
Amid the sovereign debt crisis, in July 2023, the International Monetary Fund (IMF) approved a much sought-after USD 3 billion bailout package for Pakistan. The agreement went through after Pakistan agreed to austere conditions including budget revisions by increasing both taxes and the interest rate. While the deal has granted some immediate respite for the country, more concerted efforts may be needed to solve the structural problems that led to such defaults. The energy sector has been a cornerstone in the discussions with IMF, with the sector accumulating nearly USD 12.58 billion in debt. The IMF has sought steadfast policy implementation to overcome the various challenges faced by the sector.
Pakistan’s efforts to scale up the share of renewable energy have seen considerable challenges including policy paralysis, high cost of capital, and lack of domestic financing. In FY2022 (July to April), renewable energy (excluding hydropower) accounted for only 3% of the total generation mix. Pakistan’s decision to develop more domestic coal as an immediate response to reduce high dependency on imported oil and gas could further pose challenges in this regard.
Pakistan’s dependence on China as a core funder for some of the coal projects under the Belt and Road Initiative and the CPEC has become more cumbersome as coal becomes increasingly financially unviable in light of the reducing costs of renewable energy in the country. This would mean Pakistan further defaulting on its commitments to China, unless China agrees to restructure these debts. Against such a backdrop, Pakistan must choose to switch to cleaner and more financially viable power sources. Some measures have been introduced such as the State Bank of Pakistan’s concessionary financing scheme for renewables with a 6% interest rate. However, the impact has been limited due to administrative barriers and limited coverage of the policy.
To achieve any progress on coal phasedown, Pakistan would have to take concerted and synchronous efforts to tackle inefficient subsidies, policy inconsistencies, vested interests of coal players, and issues relating to circular debt within the power sector. Notably, regional initiatives such as the Energy Transition Mechanism (ETM) led by the Asian Development Bank (ADB) have been active in Pakistan and could partner in developing strategies to reduce dependency on coal and import of other fossil fuels. The devastating 2022 floods that resulted in a loss of more than USD 30 billion prompted the country to work toward better clean energy policies and finance frameworks, as can be seen with the fast-track PV initiative and the updated NCCP. Such measures would further solidify progress toward a just transition in the country.
What to watch for next
Pakistan faces the twin challenge of debt management and economic recovery from the devastating impacts of floods and heat waves. Deep policy reforms are required to bring Pakistan out of the vicious circle of energy poverty and currency depreciation, starting with a renewed focus on developing domestic renewable energy sources. By doing so, Pakistan can attract more international financial support, follow a more cost-effective path to energy security, address the high cost and low investor interest in developing new coal plants, and at the same time be in alignment with its NDC commitments. The country will also need substantial international support so that it can invest in people-centric climate adaptation and resilience.
Pakistan has been working toward attracting more sustainable investments. For instance, in April 2023, in partnership with the United Nations (UN) Development Programme, the country presented a USD 2.84 billion investment portfolio at the UN Sustainable Development Goals Investment Fair. The portfolio includes initiatives in renewable energy, water conservation, and climate-resilient agriculture, aiming to attract international investors and donors; it is expected to help Pakistan mitigate climate change effects, enhance resilience, and foster green development. The recent IMF bailout may drive some private investment interest in the economy, but that is yet to materialize.
At the same time, there is great potential for Pakistan to develop market-based climate policy tools, including a domestic carbon market. The Pakistani Ministry of Climate Change (MoCC) has been developing a Measurement, Reporting, and Verification (MRV) system, a national carbon registry, and a domestic Emissions Trading System (ETS) framework. The establishment of the Pakistan Climate Change Fund and the National Committee on Establishment of Carbon Markets further bolsters the country’s commitment to carbon pricing and emissions trading, particularly in the power and industrial sectors. Such ongoing initiatives with international support have the potential to not only enable Pakistan to develop a domestic ETS but also to link it with international carbon markets for domestic tools in line with Article 6 of the Paris Agreement. Further actions are expected around capacity building for national stakeholders and development of Article 6 activities in the next few months.
Pakistan has been facing some challenges in operationalizing the CPEC, with China showing reluctance to include projects on water and climate resilience within the initiative’s purview. Despite these challenges, Pakistan has succeeded in forging bilateral ties with other partners in 2023, to support its efforts on climate action and resilience building. In March 2023, the United States and Pakistan formed the “Green Alliance” framework to jointly work on boosting bilateral cooperation on sustainable development, clean energy, and climate action. This includes assistance in installing 10 GW of solar power and increasing the share of renewable energy to 60% by 2030. Along similar lines, Pakistan’s Climate Change Minister Sherry Rehman met with the German Development Minister Svenja Schulze at the Petersburg Climate Dialogue and agreed to cooperate on climate issues including increasing its renewable energy contribution to the national grid.

Production of Ceramic Using Tape Casting Method for Artificial Bone Application

on 29/02/2024

Department of Metallurgy and Materials Engineering, DUET hosted a webinar featuring Dr. Yasmeen Tabak, a renowned expert in biomaterials research from the Scientific and Technological Research Council of Turkiye (Tubitak). The webinar focused on the production of ceramics using the tape casting method for artificial bone application, offering insights into cutting-edge developments in the field of orthopedic biomaterials.
At the start of the presentation, she briefed about The Scientific and Technological Research Council of Turkiye, known as Tubitak. The company is the leading agency responsible for coordinating and promoting research and development activities in Turkey. Established in 1963, Tubitak operates under the auspices of the Ministry of Industry and Technology, with a mission to support scientific and technological advancement across various disciplines.
Dr. Tabak provided an overview of ceramic materials commonly used in orthopedic applications, emphasizing their biocompatibility and structural properties resembling natural bone.
The webinar explored the significance of ceramic scaffolds in bone tissue engineering and the challenges associated with their fabrication.
Tape Casting Method:
The tape casting method was introduced as a versatile manufacturing technique for producing ceramic scaffolds with precise control over thickness and microstructure.
Dr. Tabak elaborated on the process of ceramic slurry preparation, casting onto flexible substrates, and subsequent drying and sintering stages.
Material Selection and Optimization:
The selection of ceramic powders, such as hydroxyapatite (HA) and tricalcium phosphate (TCP), was discussed in relation to their bioactivity and mechanical properties.
Dr. Tabak highlighted the importance of material optimization to enhance the performance and biocompatibility of ceramic scaffolds for bone regeneration.
Challenges and Future Directions:
Challenges in ceramic scaffold fabrication, including porosity control, mechanical strength, and integration with host tissue, were addressed during the talk.
Future research directions were outlined, focusing on advanced manufacturing techniques, surface modifications, and biomimetic scaffold designs to overcome existing limitations.
Conclusion:
The talk on the production of ceramics using the tape casting method for artificial bone application provided attendees with valuable insights into the evolving landscape of orthopedic biomaterials research.
Dr. Yasmeen’s expertise and contributions in the field underscore the potential of ceramic scaffolds to revolutionize orthopedic surgery and regenerative medicine. The webinar served as a platform for knowledge exchange and collaboration among researchers, students, paving the way for innovative solutions in bone tissue engineering.

Why Are Most Engineers Opposed to Technologists’ Registration With PEC?

on 29/02/2024

Breakthroughs and innovations in science, engineering, and technology are frequently celebrated and publicized under the caption “Science and Technology” while the crucial input of “Engineering” is always overlooked.
The work of engineers involves transforming laws of nature and principles as interpreted by scientists, into tangible and practical solutions. The design and manufacture of most products whether they be high-rise buildings, dams, bridges, powerhouses, ships, aircrafts, rockets, complex machines, giant computers, etc., require engineering which is a distinct and indispensable discipline. The prevailing disparity in recognition naturally leads to a sense of neglect among the engineers.
The role of technologists is also vital as would be clear from the following brief outline of the main functions of the three independent but essential disciplines to attain continued modernization and the creation of novel products:
SCIENTISTS
Interpretation and Formulation of Laws of Nature
Conducting Research
Developing Theories and Hypotheses
Developing Equations and Scientific Formulas
Updating Scientific Knowledge
ENGINEERS
Applying Scientific Principles to Develop Products for the Benefit of Humanity
2 Designing and Developing Details of Products including Specifications, Drawings, and Technical Reports for Construction and Manufacturing
Overseeing the Construction/ Manufacture and Testing of Products for Performance
Trouble-Shooting in Existing Systems
TECHNOLOGISTS
Mastering Methods and Procedures in Manufacturing to Improve Efficiency and Productivity
Generating New Improved Technologies to Ensure Optimal Performance of Products
Scrutinizing Materials used in a Product and Suggesting any Changes in their Proportions and the need for any Additives for Improved Workability
Bridging any Gaps between Scientific and engineering Concepts and their Practical Implementation.
Engineers are rightfully concerned that frequently they are being squeezed between the scientists on the upstream side and technologists from the downstream such that the established disciplinary lines are gradually fading. Even though the scientific or technological communities cannot perform the work of engineers because they are not educated/ trained to do so, there is a natural feeling of uneasiness which is the main cause of so-called conflict with the technologists. The scientific council, the engineering council, and the technologists council must remain separate bodies to regulate their respective professions.
Leaving technologists registration with the NTC (National Technologists Council) rather than the PEC would thus be the right thing to do. Any attempt by the technologists to encroach upon the jurisdiction of engineering would not only be dangerous for the society but also be looked upon with suspicion and distrust by the engineers giving rise to further deepening of the discord between the two.
Educational institutions can play a pivotal role of emphasizing the importance of each of the three disciplines which are all vital for humanity. The three professions ought to recognize each others unique capabilities to be able to work together seamlessly. –
The writer is former Managing Director, Member Water (WAPDA) & Federal Secretary, Water Resources Div. GoP. Currently a Technical Advisor with Associated Consulting Engineers ACE Limited (ACE).