As of yesterday after lunch, the rotating power outages according to Davao light was extended from one hour to one and a half hours. But as of yesterday afternoon, it became two hours of rotating brownout in Davao City.

Read below the new Outage Advisory from Davao Light as of Thursday March 4, 2010 (1643):

The duration of the rotating power outages that are implemented through Feeders in a given substation within the franchise area of Davao Light is extended from one hour until last Wednesday, to two hours starting yesterday, March 4.

Davao Light Corporate Communications Officer Ross Luga said the increase in the duration of the outages is due to the much reduced generation capacity of the hydro electric plants in Lake Lanao in Lanao del Sur and Pulangi River in Bukidnon as advised by the National Grid Corporation of the Phils. (NGCP). This is the result of the already very critical water elevation level of the lake and decreasing water inflow in Pulangi River. This condition at the major power sources has forced the NGCP to increase its load curtailment to Davao Light.

As of 9:00 yesterday morning, NGCP already imposed a 120-megawatt (MW) power load curtailment on Davao Light’s franchise area. Luga added that Davao Light’s standby generating plant in Bajada which was producing a maximum of 40 megawatt of power until last week has reduced its power generation to 30 megawatt. This after three units of its engines have to undergo emergency preventive maintenance.

According to Luga, with the increase in the load curtailment by the NGCP and the reduced power back-up from the standby plant, the only option remaining is to stretch the duration of the rotating outages.

Luga added that the company is coordinating with NGCP on a day-to-day basis to get the exact time of its de-loading and the level of its curtailment it will impose on Davao Light. However, NGCP has advised that other than a time range, it cannot be determined because the transmission company’s curtailment level varies at any given time of the day. Moreover, Luga said, Davao Light also has its own load variability relative to time of the day.

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Related post: Davao Light: Rotating Brownout Duration Increased to One Hour

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