Ilocos Region (Region I) · Electric cooperative

Ilocos Sur Electric Cooperative, Inc. (ISECO) electricity rates

The residential rate was ₱12.37 per kWh in October 2026 , down ₱0.86 from September 2026. ISECO serves Ilocos Sur.

Residential: ₱12.37 /kWh; October 2026
Commercial: ₱11.70 /kWh; October 2026
Industrial: ₱9.91 /kWh; October 2026
Generation charge: ₱7.98 /kWh; October 2026

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Rate trend

Residential rate (₱/kWh) Generation charge (₱/kWh) 12 months earlier: ₱8.65 (43.0%)

Monthly rates

ISECO rates by month, ₱ per kWh
Month	Residential	Commercial	Industrial	Generation charge
October 2026	₱12.37	₱11.70	₱9.91	₱7.98
September 2026	₱13.23	₱12.45	₱10.38	₱10.21
August 2026	₱11.59	₱10.75	₱8.73	₱6.93
July 2026	₱10.50	₱9.83	₱7.96	₱6.41
June 2026	₱10.56	₱9.77	₱7.86	₱5.57
May 2026	₱9.50	₱8.81	₱6.81	₱5.36
April 2026	₱10.52	₱9.85	₱7.69	₱6.12
March 2026	₱9.24	₱9.07	₱6.99	₱6.33
February 2026	₱10.05	₱9.34	₱7.51	₱5.99
January 2026	₱8.50	₱7.80	₱6.18	₱4.87
December 2025	₱8.94	₱8.22	₱6.51	₱5.19
November 2025	₱9.03	₱8.33	₱6.53	₱5.20

What this means for your bill

At ₱12.37 per kWh, every 100 kWh you use costs about ₱1,237. A home using 200 kWh a month would pay roughly ₱2,474 before any differences in charges at that consumption level. That’s an estimate — your bill shows your actual rate.

The generation charge is the cost of the electricity itself and usually the biggest part of the rate. It also determines how exported solar energy is credited under net metering.

Source: “Rates per Customer Class, Per DU, Per Region” dataset, compiled from ISECO’s published rate announcements, imported October 26, 2026. Original announcements: iseco.org , iseco.org . Rates change monthly — always confirm with ISECO.