Sri Lanka's installed solar-power capacity has exceeded 3,070 megawatts, marking another major expansion of renewable electricity capacity while increasing pressure on the national grid to manage variable daytime generation.
Available system figures indicate approximately 2,542 MW of rooftop solar and about 534 MW of ground-mounted solar.
A further 25–30 MW is reportedly being added each month.
Solar contribution varies through the day
The National System Operator says solar currently contributes approximately 15–25% of daily electricity demand, depending on weather and system conditions.
That figure should not be confused with installed capacity.
A solar installation's rated capacity is not the same as the amount of electricity it continuously supplies, because output varies with sunlight, weather and time of day.
Grid limits becoming important
The rapid expansion has led the system operator and distribution licensees to introduce measures to manage further rooftop additions in areas where grid limits have been reached.
Existing approvals issued before the relevant cut-off can proceed under the applicable arrangements, while zero-export systems are not subject to the stated export-capacity limits.
Battery storage planned
The system operator has also outlined approximately 1,240 MW / 4,660 MWh of battery-energy storage planned during 2027–29.
Battery storage can help absorb excess electricity during high-solar periods and return electricity to the grid when demand rises or solar production falls.
The solar milestone therefore represents both a major expansion of renewable capacity and a growing technical challenge for grid balancing.