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CEB orders temporary shutdown of large rooftop solar systems

Published

2 months ago

2026/04/12

The Ceylon Electricity Board (CEB) has directed owners of large-scale rooftop solar systems to temporarily disconnect their installations for a 10-day period beginning from Friday (April 10), citing growing concerns over grid stability amid low electricity demand and high solar generation.

The directive applies to rooftop solar systems exceeding 300 kW capacity, which are required to remain switched off until April 20. The move coincides with the extended holiday season, during which national electricity demand typically declines, alongside prevailing sunny weather conditions that significantly increase solar output.

Senior electrical engineers told The Island that the decision, though exceptional, was necessitated by operational risks posed to the national grid.

“We are seeing a pronounced imbalance between supply and demand,” a senior CEB system control engineer said. “With industries and commercial establishments operating at reduced levels during the holidays, demand drops. At the same time, solar generation remains high, creating excess power that the grid struggles to absorb.”

He explained that such imbalances could lead to fluctuations in system frequency, potentially threatening the stability of the grid. “If generation exceeds demand, frequency rises beyond acceptable limits.

This can trigger automatic protection mechanisms or, in extreme cases, lead to partial outages.”Another senior engineer attached to the transmission division noted that managing distributed solar generation remains a technical challenge.

“Unlike conventional power plants, rooftop solar systems are not centrally dispatchable. We cannot directly control their output in real time. This limits our ability to balance the system during periods of excess generation,” he said.

He added that the country’s grid infrastructure is still adapting to the rapid growth of renewable energy. “We lack sufficient large-scale battery storage and advanced grid management systems to effectively handle these fluctuations. Until such capabilities are enhanced, temporary curtailment becomes necessary.”

Engineers also pointed out that conventional thermal plants cannot be abruptly shut down or adjusted to compensate for sudden surges in solar generation.

“These plants require minimum stable operating levels. When solar floods the grid during low demand, it creates operational constraints that are not easy to manage,” one official said.

The CEB, in its statement, expressed appreciation for the cooperation of solar system owners affected by the measure, stressing that it is a short-term intervention aimed at ensuring uninterrupted and stable electricity supply across the country.

Energy experts say the development underscores the urgent need for grid modernization, including investment in battery energy storage systems, smart grid technologies, and improved demand-side management.

“This is part of the transition challenge,” an independent analyst noted. “As solar penetration increases, the grid must evolve to become more flexible. Otherwise, curtailment will remain a recurring necessity.”

Despite the temporary shutdown, CEB engineers reaffirmed their commitment to expanding renewable energy.

“Solar power is a key pillar of Sri Lanka’s future energy mix,” a senior engineer said. “But integration must be carefully managed. Grid stability cannot be compromised.”

The temporary disconnection order, which took effect yesterday, marks a critical moment in Sri Lanka’s energy transition—highlighting both the progress made in renewable energy adoption and the technical hurdles that remain.

By Ifham Nizam

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Landslide Early Warnings issued to the districts of Kalutara, Nuwara Eliya and Ratnapura

Published

6 hours ago

2026/06/13

Priyan

The Landslide Early Warning Centre of the National Building Research Organisation (NBRO) has issued early warnings to the Districts of Kalutara, Nuwara Eliya and Ratnapura from 1600hrs on 13th June 2026 till 1600hrs on 14th June 2026.

Accordingly,

LEVEL I (YELLOW) landslide early warnings have been issued to the Divisional Secretaries Divisions and surounding areas of Palindanuwara and Agalawatta in the Kalutara district, Ambagamuwa in the Nuwara Eliya and Ayagama, Pelmadulla,
Godakawela, Elapatha, Kalawana, Ratnapura and Nivithigala in the Ratnapura district.

News

INS Sharda departs Colombo concluding replenishment visit

Published

6 hours ago

2026/06/13

Priyan

The Indian Naval Ship (INS) ‘Sharda’ departed the island today (13 Jun 26), concluding her replenishment purposes.

On departure the vessel was accorded a traditional naval farewell by the Sri Lanka Navy at the Port of Colombo.

The visit also paved the way for vibrant personnel interactions, fostering camaraderie and goodwill. The crew of INS Sharda and personnel from the Sri Lanka Navy participated in a
friendly volleyball match and a joint yoga session. A

dditionally, Sri Lanka Navy personnel had the opportunity to visit the Indian naval vessel, while the visiting crew took time to explore several culturally significant landmarks across the island.

Latest News

Special Dengue Prevention Week declared in Colombo District from June 15 to 21

Published

18 hours ago

2026/06/13

Priyan

A decision has been taken to declare a Special Dengue Prevention Week from 15 to 21 of June by the Colombo District Dengue Control Committee to curb the spread of the disease in the Colombo District.

This decision was taken at the meeting of the Colombo District Dengue Control Committee held on Friday (12) at the Colombo District Secretariat under the patronage of Prime Minister Dr. Harini Amarasuriya.

Compared to last year, the number of dengue cases reported this year has increased significantly. According to the National Dengue Control Unit, approximately 39,100 dengue cases have been reported island wide to date, of which 25.8% have been recorded in the Colombo District. Following this situation, the Colombo District has been identified as a high-risk district.

Health authorities informed that the increasing spread of the disease has been influenced not only by the nature of circulating virus but also to the lack of sufficient immunity among the population. They further noted that the recent period of heavy rainfall has aggravated the spread of Dengue.

It was also identified that the current outbreak is being reported more frequently from public places such as government institutions, private establishments, schools, and religious venues rather than from residential premises. Observations have identified improperly managed solid waste and drainage systems in offices and other public locations as major breeding grounds for mosquitoes.

Accordingly, during the Dengue Prevention Week from 15 to 21 June, a series of measures will be implemented, including, organising community clean-up campaigns in government and private institutions, schools, residential areas, and other public spaces; Conducting inspections of high-risk premises by Divisional Secretariats and taking legal action, where necessary, followed by awareness programmes; Distributing informational leaflets, displaying banners, and carrying out public awareness campaigns through the media. Health authorities also requested school administrations not to involve students below Grade 10 in school cleaning programmes and to immediately notify the relevant Medical Officer of Health (MOH) office if a student is diagnosed with dengue.

The programme is expected to receive the active support and participation of the district’s political leadership, religious leaders of all faiths, public officials, local government institutions, the tri-forces, the police, and the general public.

The event was attended by the Chairperson of the District Coordination Committee, Members of Parliament, representatives of local government authorities, government secretaries, police officers, and officials representing the education and health sectors, among others.

[Prime Minister’s Media Division]