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Advancing solar PV integration: A vision for a sustainable energy future

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During the Eng. (Prof.) R. H. Paul Memorial Oration 2025, Prof. Lilantha Samaranayake emphasised the urgent need for advanced solar photovoltaic (PV) integration to create a resilient and sustainable energy future. Speaking on the Future of Renewable Energy, he highlighted projections from the International Energy Agency (IEA) that forecast global renewable electricity generation will exceed 17,000 TWh by 2030, representing an almost 90% increase from 2023. Solar PV is anticipated to become the leading source of renewable electricity, followed by wind and hydroelectric power.

Sri Lanka has set an ambitious target of achieving 100% renewable energy. Policymakers are working towards a people-centric, equitable, and affordable energy transition. The government also aims to reduce electricity tariffs by 30% within five years, though no specific timeline has been set for net-zero emissions.

Challenges in Solar PV Integration—While renewable energy adoption is increasing, challenges remain. A major issue is grid stability due to solar energy’s intermittent nature. Grid stability refers to the ability of an electrical power grid to maintain a consistent voltage and frequency while balancing electricity supply and demand. One of the main challenges with integrating solar energy into the grid is its intermittent nature, meaning that solar power generation fluctuates depending on sunlight availability. This variability can cause instability in the grid.

Why is Solar Energy Intermittent? Solar panels generate electricity only when exposed to sunlight. At night, there is no generation, requiring alternative power sources. Cloud cover, rain, and seasonal changes affect solar energy output. On cloudy days, solar generation can drop suddenly, causing fluctuations in power supply. Unlike conventional power plants that provide a steady output, solar energy can vary within minutes, making it challenging to maintain a stable power flow.

How Does This Affect Grid Stability? The Electricity grids operate at a specific frequency (e.g., 50 Hz or 60 Hz). A sudden drop in solar power generation can lead to a decrease in frequency, potentially causing power outages. Solar energy injections can cause voltage levels to rise or drop unpredictably, affecting equipment performance and consumer supply quality. Traditional power plants have rotating generators that provide inertia, helping to stabilise the grid. Solar PV systems do not have this natural inertia, making the grid more susceptible to instability.

Prof. Samaranayake explained that Sri Lanka’s current power generation mix, as of November 2024, includes:

27% from hydroelectric power

19.6% from rooftop solar

14.3% from coal

13.6% from oil

5.1% from private oil plants

Smaller contributions from wind, biomass, and other renewable sources

A key concern is the lack of inertia in renewable energy sources. Unlike conventional power plants, solar and wind do not provide inherent grid stability, leading to frequency fluctuations.

Prof. Samaranayake proposed an innovative solution for grid stability: implementing Virtual Inertia using advanced power electronic control systems. This approach mimics the stabilising effect of traditional rotating generators, ensuring a steady frequency supply in the grid.

Other potential solutions include:

Adding rotating machines such as LNG or nuclear power plants

Energy storage systems like pumped storage, flywheels, and large-scale battery systems

Enhancing grid regulations to support the integration of rooftop solar PV systems

The introduction of advanced Virtual Inertia technology is expected to complement regulatory changes that relax statutory voltage limits and improve the quality of electricity supply.

Another controversial yet forward-looking strategy discussed was the possibility of nuclear energy. According to sources from the Sri Lanka Atomic Energy Board (SLAEB), the country’s first nuclear power plant, leveraging integral pressurized water reactor (iPWR) technology, could be operational by 2032. Given Sri Lanka’s proximity to India, which already operates nuclear plants, proponents argue that nuclear energy could be a viable option for stabilizing the power grid.

Prof. Samaranayake stressed the need for a holistic approach, as solar PV continues to be vital to Sri Lanka’s energy future. This involves investing in energy storage, enhancing grid infrastructure, and enacting regulatory reforms. He called on policymakers, engineers, and the public to collaborate in creating a more sustainable and resilient energy landscape.

The Eng. (Prof.) R. H. Paul Memorial Oration reminds us of engineering and innovation’s critical role in tackling global energy challenges. With strategic planning and technological advancements, Sri Lanka can pave the way for a cleaner, more sustainable future.

The oration paid tribute to the late Prof. R. H. Paul, a distinguished academic and former Dean of the Faculty of Engineering, University of Peradeniya, who made significant contributions to electrical and electronic engineering in Sri Lanka. His legacy continues to inspire advancements in the energy sector.



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Grand Leisure Resort brings luxury senior care to Negombo

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Grand Leisure Care and Wellness Resort has officially opened in Kochchikade, Negombo, introducing a resort-style senior living facility designed to international standards. Offering a blend of comfort, medical care, and wellness, the facility features private rooms with bathrooms, pantries, and modern living spaces. With 24/7 medical staff, wellness programmes, and family accommodation options, Grand Leisure caters to both independent and dependent seniors. The resort includes gardens, entertainment facilities, and high-speed internet to support residents’ well-being and connectivity. Positioned as a high-quality alternative to traditional elderly homes, it is open for short-term recovery or long-term stays, said a release.

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COYLE welcomes new chairman Manjula Wijesundara

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Manjula Wijesundara

The Chamber of Lankan Entrepreneurs (COYLE) last week announced the appointment of Mr. Manjula Wijesundara as its new Chairman for the year 2025/26. A COYLE news release described him as a “respected entrepreneur and passionate advocate for business-led development” and said he steps into leadership with a bold theme that reflects the needs of the hour—”A Year of International Growth.”

With the global economy undergoing profound shifts, the appointment marks a timely change in COYLE’s strategic focus, the release said.

In his inaugural remarks, the new Chairman articulated a vision for strengthening Sri Lanka’s economic resilience through robust international engagement and enhanced global market access for Sri Lankan businesses. His message was clear: sustainable economic recovery will come from expanding the nation’s presence beyond its borders.

“As Sri Lankan entrepreneurs, we must look outward and act with purpose. The next phase of our growth lies in our ability to compete, collaborate, and lead in international markets. This year will be about building bridges—with policymakers, global partners, and emerging economies—to position Sri Lanka as a trusted trade and investment partner,” Wijesundara stated.

Under his leadership, COYLE will actively pursue stronger relationships with international chambers, diplomatic missions, and trade bodies, laying the groundwork for more meaningful bilateral and multilateral cooperation. The Chamber’s focus will be to support and amplify the voice of Sri Lankan entrepreneurs globally—especially in sectors such as apparel, rubber, tea, ICT, and manufacturing, which continue to be among the country’s highest foreign exchange earners.

Wijesundara believes that strong international relations not only open new doors for exports but also attract critical investments and partnerships needed to modernise Sri Lanka’s industries and infrastructure. “In an interconnected world, diplomacy and business must go hand in hand. Our vision is to be a trusted ally in economic diplomacy,” he noted.

As part of this agenda, COYLE is preparing to lead a series of structured engagements with foreign policymakers and trade delegations. These efforts are aimed at helping Sri Lankan businesses overcome barriers to market entry, navigate evolving regulatory frameworks, and build long-term partnerships across key regions including South Asia, the Middle East, East Asia, and Europe.

By taking a proactive approach, the Chamber hopes to influence international trade conversations and ensure that Sri Lanka remains competitive in an increasingly protectionist global environment. COYLE also aims to foster stronger diaspora business linkages that could be leveraged to expand the country’s export footprint.

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Dialog Axiata Connects Sri Lanka to the World with the India-Asia Xpress Subsea Cable Strengthening Redundancy and Global Data Connectivity

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Unveiling of the Plaque (photographed from left to right): Mr. Lasantha Theverapperuma, Group Chief Marketing Officer, Dialog Axiata PLC; Ms. Lim Li San, Group Chief Operating Officer, Dialog Axiata PLC; Mr. Supun Weerasinghe, Director / Group Chief Executive, Dialog Axiata PLC; Mr. Vivek Sood, Group Chief Executive Officer and Managing Director, Axiata Group Berhad; His Excellency Badli Hisham Adam, High Commissioner of Malaysia; Mr. Harvinder Singh, Consul General of India; and Mr. Ranga Kariyawasam, Group Chief Technology Officer, Dialog Axiata PLC

Dialog Axiata PLC, Sri Lanka’s #1 connectivity provider, announced the launch of the IAX (India Asia Xpress) submarine cable system—a significant investment aimed at bolstering Sri Lanka’s international network and future-proofing the country’s digital infrastructure. Consequently, Dialog’s total investments in international connectivity infrastructure surpassed USD 100 million.

This milestone was achieved through collaborative efforts with a consortium of regional telco partners and global hyperscalers, led by Reliance Jio—underscoring Dialog’s commitment to building strategic alliances that drive technological advancement and innovation.

The IAX cable system significantly enhances Sri Lanka’s global connectivity by providing high-speed, high-capacity bandwidth, catering to the growing demands of 5G, AI, and other data-intensive applications. Designed with cutting-edge technology, the IAX cable integrates seamlessly into Dialog’s existing subsea infrastructure, ensuring scalable and efficient data transmission between major global content hubs in Mumbai, Chennai, and Singapore. This development further cements Sri Lanka’s role as a key player in the region’s digital transformation.

To commemorate this strategic milestone, Dialog hosted an official launch event at the Dialog IAX Submarine Cable Landing Station in Matara. The event was graced by several distinguished dignitaries, including His Excellency Badli Hisham Adam, High Commissioner of Malaysia; Mr. Harvinder Singh, Consul General of India; Mr. Vivek Sood, Group Chief Executive Officer and Managing Director of Axiata Group Berhad; and Supun Weerasinghe, Director / Group Chief Executive of Dialog Axiata PLC, along with other representatives from Dialog.

Launch of the IAX Submarine Cable (photographed from left to right): Mr. Lasantha Theverapperuma, Group Chief Marketing Officer, Dialog Axiata PLC; Ms. Lim Li San, Group Chief Operating Officer, Dialog Axiata PLC; Mr. Ranga Kariyawasam, Group Chief Technology Officer, Dialog Axiata PLC; Mr. Harvinder Singh, Consul General of India; His Excellency Badli Hisham Adam, High Commissioner of Malaysia; Mr. Vivek Sood, Group Chief Executive Officer and Managing Director, Axiata Group Berhad; and Mr. Supun Weerasinghe, Director and Group Chief Executive, Dialog Axiata PLC.

The integration of the IAX cable reinforces Sri Lanka’s digital infrastructure with enhanced resilience and redundancy. By complementing the existing BBG (Bay of Bengal Gateway) and MSC (Maldives Sri Lanka Cable) systems, the IAX cable strengthens network reliability, mitigating risks associated with single points of failure. Dialog’s advanced Cable Landing Stations in Matara and Mount Lavinia ensure seamless, uninterrupted connectivity, offering businesses and consumers a more secure and robust digital experience.

Supun Weerasinghe, Director / Group Chief Executive of Dialog Axiata PLC said, “We are pleased to strengthen Sri Lanka’s digital backbone with the launch of the IAX submarine cable, made possible through collaboration with our valued global partners. This investment reinforces our commitment to empowering Sri Lankan lives and enterprises with world-class infrastructure, ensuring the nation stays ahead in an increasingly digital world. By improving network reliability and expanding capacity, we are working towards a more resilient and inclusive digital ecosystem.”

As a key player in the region’s connectivity landscape, Dialog continues to drive Sri Lanka’s position as a critical hub for global communications infrastructure. Through continuous investment in cutting-edge network solutions and strategic partnerships, Dialog is shaping the future of digital connectivity, empowering enterprises and consumers with world-class infrastructure that supports economic growth and technological innovation.

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