The approved revised tariff takes effect on April 1, 2026, replacing the tariff that applied until March 31, 2026.
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Sri Lanka Electricity Tariff Revision in April 2026
Understand the Sri Lanka electricity tariff revision effective on April 1, 2026, see where the main bill increases happened, and check how the new CEB tariff compares with the tariff that applied until March 31, 2026.
Lower-usage domestic bands moved only slightly, but higher-use domestic bands saw sharper energy-rate increases.
You can now estimate the new payable amount and compare it against the older tariff directly inside the electricity bill calculator.
PUCSL opened an extraordinary tariff review on April 29, 2026 with an estimated 18.11% revision requirement, but the last approved tariff I could verify is still the table effective from April 1, 2026.
What changed in the Sri Lanka electricity tariff revision
The Sri Lanka electricity tariff revision effective on April 1, 2026 introduced a new approved tariff table for the standard 30-day billing cycle. For households searching for the new electricity tariff or a PUCSL electricity tariff update, the practical question is simple: how much more will the bill be under the new schedule compared with the tariff that applied until March 31, 2026.
The change is not uniform across all users. Domestic low-usage bands moved modestly, while several higher-usage domestic tiers increased more sharply. Domestic time-of-use tariffs also moved up, and a number of industrial, hotel, general-purpose, government, agriculture, and bulk-supply categories were revised as well.
Why the bill increase feels different by usage level
A tariff revision does not affect every bill by the same percentage because electricity charging in Sri Lanka is banded. That means the final increase depends on where the household or business sits inside the tariff structure, not just on total monthly units alone.
For domestic users, higher monthly consumption can push more units into more expensive tiers, which means the average cost per unit rises along with the fixed charge already tied to that band. That is why two households can both hear about a tariff revision but experience very different bill changes in practice.
Best way to check your own increase
The most useful next step is not guessing from headlines. Instead, enter your actual usage into the electricity bill calculator and compare the new payable amount with the bill under the tariff that was in effect until March 31, 2026. That gives you a bill-level answer instead of a broad tariff headline.
If your household is also considering solar, the revision matters even more because a higher avoided bill can change the look of solar savings and payback. In other words, the April 2026 tariff revision is not just a rates story. It changes household budgeting, bill comparison, and solar economics at the same time.
What the later 18% discussion actually means
On April 29, 2026, PUCSL published an extraordinary tariff review consultation document after a revised NSO cost submission. That document says the required tariff revision percentage is 18.11% for a possible period from mid-May to the end of September 2026.
That is not the same thing as a newer approved tariff table. As of May 10, 2026, the calculator continues to use the last approved PUCSL tariff that took effect on April 1, 2026. If PUCSL later publishes a formal approval decision with updated rate tables, the calculator should then be revised again.