Features
The anatomy of a blackout
By Dr Tilak Siyambalapitiya
It is too early to come to conclusions on what caused the first event towards the blackout on Tuesday afternoon, why that event propagated all over the grid causing a national blackout, and why it took so long to restore electricity supply. The blackout set in around 1235; it was about 2230 when the last customer was reconnected. There is no official statement on whether the problem has been resolved, whether there were equipment damages and whether any such damages have imposed constraints to operate the grid in its normal state.
In the recent past, blackouts have occurred on 9th October 2009, 27th September 2015, 25th February 2016 and 13th March 2016. The blackout earlier this week on 17th August was the 5th blackout in recent memory.
Electric power systems are designed to receive electrical energy from power plants and deliver to customers. Unlike any other commodity, electricity cannot be stored in the form of electricity. It can be stored as water (in a reservoir), fuel (coal, oil or gas) and as chemical energy (in a battery). Wind and solar power generation have no storage whatsoever. Producing electricity from water, fuel or batteries has to be done at the same instant the customer requests the electricity supply to his light, air conditioner, water pump or the factory machine. Therefore, the key word is “dynamic equilibrium”.
That means the rate of electricity production at any moment (measured in megawatt) should be equal to the total customer demand plus the losses in the power transmission and distribution network. As long as there is a balance, all customers will get electricity supply, at the correct voltage and frequency.
Customer demand for electricity is not static. It varies all the time, based on time of day, weather, tea breaks and lunch breaks, and even as a result of TV programmes. Power system controllers also watch TV, particularly when extremely popular programmes and cricket matches are aired to raise power plant output when the match begins, be watchful during breaks, and reduce power generation when the match is over. Remember the production and the demand have to be the same all the time.
Then there are other causes. Sudden rain in a hydropower area would compel such power plants to be immediately brought into operation to save water from spilling over the reservoir. Fast moving clouds over a solar power generating area would cause electricity production from solar power to fluctuate. Electricity production from wind power plants fluctuate all the time, severely at times. These fluctuations of electricity production are somewhat predictable and can be managed, provided the amount of fluctuating hydro, solar and wind power are not very large portions of the supply. Remember the production and demand have to be the same all the time.
When any external event or an equipment failure causes that equilibrium to be lost, then we say the electricity system enters a transient state. The first reaction of the protection equipment would be to isolate the affected section of the network. Just like the fuse, the circuit breaker or the trip switch would isolate a section or all of your house, similar equipment would immediately detect the problem and isolate that faulty section. Electricity travels very fast, at the speed of light. So this isolation too, has to be done very fast, for two reasons: the faulty equipment has to be saved from damage and the fault should be prevented from causing secondary ones.
If the faulty section caused the loss of a power plant, or caused a sizeable share of customers to be disconnected, the matter will be serious, because now we have lost the balance between electricity production and demand. There would be either a shortage or a surplus of electricity production. In most situations, it is a shortage of electricity production because most problems occur within power plants or in the immediately vicinity of power plants. So, now we have less production, and it is not possible to meet the customer demand.
This is when the stored energy in the power system, in the form of rotating generators as well as rotating equipment owned by customers come to help. Any rotating mass has a stored energy. In the technical jargon (this is taught at A-levels too), the energy stored is the rotational kinetic energy. This stored energy is in the form of mechanical energy and is proportional to the size of the generator and to the square of the rotating speed. Large, fast-rotating generators (such as Norochcholai, Kerawalapititya and Kelanitissa) have larger stored energy. Large but slow rotating generators such as hydropower, have moderate stored energy. Small, slow rotating generators such as small hydro and wind power have a small amount of stored energy. Reciprocating engine-generators such as Sapugaskanda and Embilipitiya have very small stored energy. Finally, solar power has zero stored energy.
After the initial fault, such as a short circuit, the affected section is isolated by switches operating automatically and if that causes a power plant to be lost, then the remaining generators would immediately slowdown. Remember that the stored energy is proportional to the square of the speed? So when slowing down, they ‘release’ their stored energy, and convert that to electrical energy, to serve customers. This happens automatically; no operator intervention is required.
Remember these events happen all in a few seconds. Fault isolation may take about 0.1 seconds. Slowing down of generators will happen immediately and may go one for about 2 to 5 seconds. Now, slowing down of generators cannot be done all the time because they would then come to standstill and would not produce any electricity. In fact, this slowing down is allowed by about 5% of the rated speed. As the generators slow down, just like the heartbeat, the ‘frequency’ of the power supply also decreases. If the frequency, which is normally 50 cycles per second, reduces to 49 cycles per second, and stabilizes, then there will be no problem. The frequency stabilizes and then within 5 to 10 seconds, water or fuel valves of power plants will open and admit more energy into generators, which will raise the production of electricity. Then the frequency will also increase and again stabilizes at 50 cycles per second. All these happen automatically; no physical intervention is required, provided there are generators already connected to the grid, producing electricity, with spare capacity, and ‘fuel’ in store.
Sri Lanka’s power system is running with very little spare capacity, thanks to the two politicians who cancelled all the major power plants that were on the drawing boards in 2015. Politicians in Sri Lanka take pride in cancelling projects, but not for facilitating their construction. Then over 2016-2020, the country was compelled to run the existing oil power plants and purchase new oil power plants (much to the delight of some others), then the production costs went up. However, electricity prices cannot be increased because the same two politicians would not allow. So, most of the time, there is no extra fuel in the tanks to quickly raise the electricity production. In other words, spare capacity is not used, even if it is available, because keeping them spinning on partial production levels, hoping some emergency may occur, is costly. Such spare capacity, in the jargon, is known as ‘spinning reserve’.
So how does a grid go dead?
Assuming the short circuit is relieved, then if a power plant has shutdown, the ‘frequency’ drops, attempting to balance the supply and demand. What if it is unable to balance; if the gap between supply and demand is too high and if the frequency cross 49 cycles per second and goes down further? Then the second layer of protection comes into action, automatically. Customers are automatically removed from the grid in blocks, thus reducing the demand for electricity. This happens in several stages, automatically. If the gap between supply and demand is too large, up to 50% of customers may be automatically removed, in a desperate attempt to restore the balance. In most case this works, but for reasons yet to be investigated, it did not happen in this Tuesday’s blackout.
If the supply and demand cannot be balanced even after removing 50% of customers, the there is no hope. A blackout is inevitable. The ‘frequency’ may hit 47 cycles per second and then larger generators (Norochcholai, Kelanitissa) would trip automatically, for their own safety. Hydropower may hold on for a bit longer, but would not be allowed to reach even 46 cycles. One by one, all generations in the grid would shut down, automatically, for their own safety.
All this happens, typically within five seconds. For how long the grid struggled on Tuesday afternoon this week to recover is still unknown. In the 2009 blackout, it was all over in just over 3 seconds (yes seconds, not minutes).
In the 2015 blackout, the grid struggled for 3 ½ minutes before its collapse. In 2016 February blackout, the gird struggled for 8 minutes, before the final collapse.
Features
Disaster-proofing paradise: Sri Lanka’s new path to global resilience
iyadasa Advisor to the Ministry of Science & Technology and a Board of Directors of Sri Lanka Atomic Energy Regulatory Council A value chain management consultant to www.vivonta.lk
As climate shocks multiply worldwide from unseasonal droughts and flash floods to cyclones that now carry unpredictable fury Sri Lanka, long known for its lush biodiversity and heritage, stands at a crossroads. We can either remain locked in a reactive cycle of warnings and recovery, or boldly transform into the world’s first disaster-proof tropical nation — a secure haven for citizens and a trusted destination for global travelers.
The Presidential declaration to transition within one year from a limited, rainfall-and-cyclone-dependent warning system to a full-spectrum, science-enabled resilience model is not only historic — it’s urgent. This policy shift marks the beginning of a new era: one where nature, technology, ancient wisdom, and community preparedness work in harmony to protect every Sri Lankan village and every visiting tourist.
The Current System’s Fatal Gaps
Today, Sri Lanka’s disaster management system is dangerously underpowered for the accelerating climate era. Our primary reliance is on monsoon rainfall tracking and cyclone alerts — helpful, but inadequate in the face of multi-hazard threats such as flash floods, landslides, droughts, lightning storms, and urban inundation.
Institutions are fragmented; responsibilities crisscross between agencies, often with unclear mandates and slow decision cycles. Community-level preparedness is minimal — nearly half of households lack basic knowledge on what to do when a disaster strikes. Infrastructure in key regions is outdated, with urban drains, tank sluices, and bunds built for rainfall patterns of the 1960s, not today’s intense cloudbursts or sea-level rise.
Critically, Sri Lanka is not yet integrated with global planetary systems — solar winds, El Niño cycles, Indian Ocean Dipole shifts — despite clear evidence that these invisible climate forces shape our rainfall, storm intensity, and drought rhythms. Worse, we have lost touch with our ancestral systems of environmental management — from tank cascades to forest sanctuaries — that sustained this island for over two millennia.
This system, in short, is outdated, siloed, and reactive. And it must change.
A New Vision for Disaster-Proof Sri Lanka
Under the new policy shift, Sri Lanka will adopt a complete resilience architecture that transforms climate disaster prevention into a national development strategy. This system rests on five interlinked pillars:
Science and Predictive Intelligence
We will move beyond surface-level forecasting. A new national climate intelligence platform will integrate:
AI-driven pattern recognition of rainfall and flood events
Global data from solar activity, ocean oscillations (ENSO, MJO, IOD)
High-resolution digital twins of floodplains and cities
Real-time satellite feeds on cyclone trajectory and ocean heat
The adverse impacts of global warming—such as sea-level rise, the proliferation of pests and diseases affecting human health and food production, and the change of functionality of chlorophyll—must be systematically captured, rigorously analysed, and addressed through proactive, advance decision-making.
This fusion of local and global data will allow days to weeks of anticipatory action, rather than hours of late alerts.
Advanced Technology and Early Warning Infrastructure
Cell-broadcast alerts in all three national languages, expanded weather radar, flood-sensing drones, and tsunami-resilient siren networks will be deployed. Community-level sensors in key river basins and tanks will monitor and report in real-time. Infrastructure projects will now embed climate-risk metrics — from cyclone-proof buildings to sea-level-ready roads.
Governance Overhaul
A new centralised authority — Sri Lanka Climate & Earth Systems Resilience Authority — will consolidate environmental, meteorological, Geological, hydrological, and disaster functions. It will report directly to the Cabinet with a real-time national dashboard. District Disaster Units will be upgraded with GN-level digital coordination. Climate literacy will be declared a national priority.
People Power and Community Preparedness
We will train 25,000 village-level disaster wardens and first responders. Schools will run annual drills for floods, cyclones, tsunamis and landslides. Every community will map its local hazard zones and co-create its own resilience plan. A national climate citizenship programme will reward youth and civil organisations contributing to early warning systems, reforestation (riverbank, slopy land and catchment areas) , or tech solutions.
Reviving Ancient Ecological Wisdom
Sri Lanka’s ancestors engineered tank cascades that regulated floods, stored water, and cooled microclimates. Forest belts protected valleys; sacred groves were biodiversity reservoirs. This policy revives those systems:
Restoring 10,000 hectares of tank ecosystems
Conserving coastal mangroves and reintroducing stone spillways
Integrating traditional seasonal calendars with AI forecasts
Recognising Vedda knowledge of climate shifts as part of national risk strategy
Our past and future must align, or both will be lost.
A Global Destination for Resilient Tourism
Climate-conscious travelers increasingly seek safe, secure, and sustainable destinations. Under this policy, Sri Lanka will position itself as the world’s first “climate-safe sanctuary island” — a place where:
Resorts are cyclone- and tsunami-resilient
Tourists receive live hazard updates via mobile apps
World Heritage Sites are protected by environmental buffers
Visitors can witness tank restoration, ancient climate engineering, and modern AI in action
Sri Lanka will invite scientists, startups, and resilience investors to join our innovation ecosystem — building eco-tourism that’s disaster-proof by design.
Resilience as a National Identity
This shift is not just about floods or cyclones. It is about redefining our identity. To be Sri Lankan must mean to live in harmony with nature and to be ready for its changes. Our ancestors did it. The science now supports it. The time has come.
Let us turn Sri Lanka into the world’s first climate-resilient heritage island — where ancient wisdom meets cutting-edge science, and every citizen stands protected under one shield: a disaster-proof nation.
Features
The minstrel monk and Rafiki the old mandrill in The Lion King – I
Why is national identity so important for a people? AI provides us with an answer worth understanding critically (Caveat: Even AI wisdom should be subjected to the Buddha’s advice to the young Kalamas):
‘A strong sense of identity is crucial for a people as it fosters belonging, builds self-worth, guides behaviour, and provides resilience, allowing individuals to feel connected, make meaningful choices aligned with their values, and maintain mental well-being even amidst societal changes or challenges, acting as a foundation for individual and collective strength. It defines “who we are” culturally and personally, driving shared narratives, pride, political action, and healthier relationships by grounding people in common values, traditions, and a sense of purpose.’
Ethnic Sinhalese who form about 75% of the Sri Lankan population have such a unique identity secured by the binding medium of their Buddhist faith. It is significant that 93% of them still remain Buddhist (according to 2024 statistics/wikipedia), professing Theravada Buddhism, after four and a half centuries of coercive Christianising European occupation that ended in 1948. The Sinhalese are a unique ancient island people with a 2500 year long recorded history, their own language and country, and their deeply evolved Buddhist cultural identity.
Buddhism can be defined, rather paradoxically, as a non-religious religion, an eminently practical ethical-philosophy based on mind cultivation, wisdom and universal compassion. It is an ethico-spiritual value system that prioritises human reason and unaided (i.e., unassisted by any divine or supernatural intervention) escape from suffering through self-realisation. Sri Lanka’s benignly dominant Buddhist socio-cultural background naturally allows unrestricted freedom of religion, belief or non-belief for all its citizens, and makes the country a safe spiritual haven for them. The island’s Buddha Sasana (Dispensation of the Buddha) is the inalienable civilisational treasure that our ancestors of two and a half millennia have bequeathed to us. It is this enduring basis of our identity as a nation which bestows on us the personal and societal benefits of inestimable value mentioned in the AI summary given at the beginning of this essay.
It was this inherent national identity that the Sri Lankan contestant at the 72nd Miss World 2025 pageant held in Hyderabad, India, in May last year, Anudi Gunasekera, proudly showcased before the world, during her initial self-introduction. She started off with a verse from the Dhammapada (a Pali Buddhist text), which she explained as meaning “Refrain from all evil and cultivate good”. She declared, “And I believe that’s my purpose in life”. Anudi also mentioned that Sri Lanka had gone through a lot “from conflicts to natural disasters, pandemics, economic crises….”, adding, “and yet, my people remain hopeful, strong, and resilient….”.
“Ayubowan! I am Anudi Gunasekera from Sri Lanka. It is with immense pride that I represent my Motherland, a nation of resilience, timeless beauty, and a proud history, Sri Lanka.
“I come from Anuradhapura, Sri Lanka’s first capital, and UNESCO World Heritage site, with its history and its legacy of sacred monuments and stupas…….”.
The “inspiring words” that Anudi quoted are from the Dhammapada (Verse 183), which runs, in English translation: “To avoid all evil/To cultivate good/and to cleanse one’s mind -/this is the teaching of the Buddhas”. That verse is so significant because it defines the basic ‘teaching of the Buddhas’ (i.e., Buddha Sasana; this is how Walpole Rahula Thera defines Buddha Sasana in his celebrated introduction to Buddhism ‘What the Buddha Taught’ first published in1959).
Twenty-five year old Anudi Gunasekera is an alumna of the University of Kelaniya, where she earned a bachelor’s degree in International Studies. She is planning to do a Master’s in the same field. Her ambition is to join the foreign service in Sri Lanka. Gen Z’er Anudi is already actively engaged in social service. The Saheli Foundation is her own initiative launched to address period poverty (i.e., lack of access to proper sanitation facilities, hygiene and health education, etc.) especially among women and post-puberty girls of low-income classes in rural and urban Sri Lanka.
Young Anudi is primarily inspired by her patriotic devotion to ‘my Motherland, a nation of resilience, timeless beauty, and a proud history, Sri Lanka’. In post-independence Sri Lanka, thousands of young men and women of her age have constantly dedicated themselves, oftentimes making the supreme sacrifice, motivated by a sense of national identity, by the thought ‘This is our beloved Motherland, these are our beloved people’.
The rescue and recovery of Sri Lanka from the evil aftermath of a decade of subversive ‘Aragalaya’ mayhem is waiting to be achieved, in every sphere of national engagement, including, for example, economics, communications, culture and politics, by the enlightened Anudi Gunasekeras and their male counterparts of the Gen Z, but not by the demented old stragglers lingering in the political arena listening to the unnerving rattle of “Time’s winged chariot hurrying near”, nor by the baila blaring monks at propaganda rallies.
Politically active monks (Buddhist bhikkhus) are only a handful out of the Maha Sangha (the general body of Buddhist bhikkhus) in Sri Lanka, who numbered just over 42,000 in 2024. The vast majority of monks spend their time quietly attending to their monastic duties. Buddhism upholds social and emotional virtues such as universal compassion, empathy, tolerance and forgiveness that protect a society from the evils of tribalism, religious bigotry and death-dealing religious piety.
Not all monks who express or promote political opinions should be censured. I choose to condemn only those few monks who abuse the yellow robe as a shield in their narrow partisan politics. I cannot bring myself to disapprove of the many socially active monks, who are articulating the genuine problems that the Buddha Sasana is facing today. The two bhikkhus who are the most despised monks in the commercial media these days are Galaboda-aththe Gnanasara and Ampitiye Sumanaratana Theras. They have a problem with their mood swings. They have long been whistleblowers trying to raise awareness respectively, about spreading religious fundamentalism, especially, violent Islamic Jihadism, in the country and about the vandalising of the Buddhist archaeological heritage sites of the north and east provinces. The two middle-aged monks (Gnanasara and Sumanaratana) belong to this respectable category. Though they are relentlessly attacked in the social media or hardly given any positive coverage of the service they are doing, they do nothing more than try to persuade the rulers to take appropriate action to resolve those problems while not trespassing on the rights of people of other faiths.
These monks have to rely on lay political leaders to do the needful, without themselves taking part in sectarian politics in the manner of ordinary members of the secular society. Their generally demonised social image is due, in my opinion, to three main reasons among others: 1) spreading misinformation and disinformation about them by those who do not like what they are saying and doing, 2) their own lack of verbal restraint, and 3) their being virtually abandoned to the wolves by the temporal and spiritual authorities.
(To be continued)
By Rohana R. Wasala ✍️
Features
US’ drastic aid cut to UN poses moral challenge to world
‘Adapt, shrink or die’ – thus runs the warning issued by the Trump administration to UN humanitarian agencies with brute insensitivity in the wake of its recent decision to drastically reduce to $2bn its humanitarian aid to the UN system. This is a substantial climb down from the $17bn the US usually provided to the UN for its humanitarian operations.
Considering that the US has hitherto been the UN’s biggest aid provider, it need hardly be said that the US decision would pose a daunting challenge to the UN’s humanitarian operations around the world. This would indeed mean that, among other things, people living in poverty and stifling material hardships, in particularly the Southern hemisphere, could dramatically increase. Coming on top of the US decision to bring to an end USAID operations, the poor of the world could be said to have been left to their devices as a consequence of these morally insensitive policy rethinks of the Trump administration.
Earlier, the UN had warned that it would be compelled to reduce its aid programs in the face of ‘the deepest funding cuts ever.’ In fact the UN is on record as requesting the world for $23bn for its 2026 aid operations.
If this UN appeal happens to go unheeded, the possibilities are that the UN would not be in a position to uphold the status it has hitherto held as the world’s foremost humanitarian aid provider. It would not be incorrect to state that a substantial part of the rationale for the UN’s existence could come in for questioning if its humanitarian identity is thus eroded.
Inherent in these developments is a challenge for those sections of the international community that wish to stand up and be counted as humanists and the ‘Conscience of the World.’ A responsibility is cast on them to not only keep the UN system going but to also ensure its increased efficiency as a humanitarian aid provider to particularly the poorest of the poor.
It is unfortunate that the US is increasingly opting for a position of international isolation. Such a policy position was adopted by it in the decades leading to World War Two and the consequences for the world as a result for this policy posture were most disquieting. For instance, it opened the door to the flourishing of dictatorial regimes in the West, such as that led by Adolph Hitler in Germany, which nearly paved the way for the subjugation of a good part of Europe by the Nazis.
If the US had not intervened militarily in the war on the side of the Allies, the West would have faced the distressing prospect of coming under the sway of the Nazis and as a result earned indefinite political and military repression. By entering World War Two the US helped to ward off these bleak outcomes and indeed helped the major democracies of Western Europe to hold their own and thrive against fascism and dictatorial rule.
Republican administrations in the US in particular have not proved the greatest defenders of democratic rule the world over, but by helping to keep the international power balance in favour of democracy and fundamental human rights they could keep under a tight leash fascism and linked anti-democratic forces even in contemporary times. Russia’s invasion and continued occupation of parts of Ukraine reminds us starkly that the democracy versus fascism battle is far from over.
Right now, the US needs to remain on the side of the rest of the West very firmly, lest fascism enjoys another unfettered lease of life through the absence of countervailing and substantial military and political power.
However, by reducing its financial support for the UN and backing away from sustaining its humanitarian programs the world over the US could be laying the ground work for an aggravation of poverty in the South in particular and its accompaniments, such as, political repression, runaway social discontent and anarchy.
What should not go unnoticed by the US is the fact that peace and social stability in the South and the flourishing of the same conditions in the global North are symbiotically linked, although not so apparent at first blush. For instance, if illegal migration from the South to the US is a major problem for the US today, it is because poor countries are not receiving development assistance from the UN system to the required degree. Such deprivation on the part of the South leads to aggravating social discontent in the latter and consequences such as illegal migratory movements from South to North.
Accordingly, it will be in the North’s best interests to ensure that the South is not deprived of sustained development assistance since the latter is an essential condition for social contentment and stable governance, which factors in turn would guard against the emergence of phenomena such as illegal migration.
Meanwhile, democratic sections of the rest of the world in particular need to consider it a matter of conscience to ensure the sustenance and flourishing of the UN system. To be sure, the UN system is considerably flawed but at present it could be called the most equitable and fair among international development organizations and the most far-flung one. Without it world poverty would have proved unmanageable along with the ills that come along with it.
Dehumanizing poverty is an indictment on humanity. It stands to reason that the world community should rally round the UN and ensure its survival lest the abomination which is poverty flourishes. In this undertaking the world needs to stand united. Ambiguities on this score could be self-defeating for the world community.
For example, all groupings of countries that could demonstrate economic muscle need to figure prominently in this initiative. One such grouping is BRICS. Inasmuch as the US and the West should shrug aside Realpolitik considerations in this enterprise, the same goes for organizations such as BRICS.
The arrival at the above international consensus would be greatly facilitated by stepped up dialogue among states on the continued importance of the UN system. Fresh efforts to speed-up UN reform would prove major catalysts in bringing about these positive changes as well. Also requiring to be shunned is the blind pursuit of narrow national interests.
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