From ₱9.71 to ₱13.09 a Kilowatt-Hour: Why Davao's Power Bill Jumped in 2026

If you have lived in Davao for a year, you have probably done the same thing twice this summer: opened the Davao Light bill, looked at the total, and then gone back to the kilowatt-hours to check whether you really used that much more. The answer is in the price, not in the consumption.

Davao Light's own published figures show the average residential rate at ₱9.71 per kilowatt-hour in December 2025 and ₱13.09 per kilowatt-hour in July 2026. That is an increase of almost 35 percent in seven months, for exactly the same electricity coming out of exactly the same socket.

For a household that uses 500 kWh a month, the arithmetic is simple. At the December rate the energy part of the bill was about ₱4,860. At the July rate it is about ₱6,540. That is ₱1,686 more every month, or around ₱20,000 over a year, before anyone has turned on a second aircon.

So what happened? The short answer is that Davao did not suddenly start paying more for its wires, its meters or its utility. It started paying far more for the power itself.

The rate, month by month

Davao Light publishes an average rate for every customer class each month on its rates page. The residential totals for the last eight months read like this:

• •December 2025: ₱9.71 per kWh
• •January 2026: ₱11.72
• •February 2026: ₱10.30
• •March 2026: ₱10.63
• •April 2026: ₱10.53
• •May 2026: ₱10.35
• •June 2026: ₱12.30
• •July 2026: ₱13.09

This is not a smooth climb. There was a spike in January, a plateau around ₱10.30 to ₱10.60 through the spring, and then a step up in June and another in July. The July figure applies to the billing period from 11 July to 10 August, as the City Information Office report of 22 July confirms. Anyone who arrived in Davao in the first half of the year and built a budget around a ₱10.50 rate is now looking at a number roughly a quarter higher.

Where the extra pesos actually come from

A Davao Light bill is a stack of separate charges, and the monthly rate table breaks every one of them out. Put December and July side by side and the story tells itself.

The generation charge, the cost of the electricity Davao Light buys from power plants and the spot market, went from ₱5.06 to ₱7.92 per kWh. That single line rose by about 57 percent.

The system loss charge went from ₱0.56 to ₱0.97. That is not a separate problem. System loss is the power that disappears between the plant and your meter, and it is priced at what that power cost to buy. When generation becomes more expensive, every lost kilowatt-hour becomes more expensive too.

The distribution charge, the only part of the bill that Davao Light keeps as its own revenue, stayed at ₱1.9371 per kWh, identical in December and July.

Add it up. The residential rate rose by ₱3.37 per kWh. Generation and system loss together account for ₱3.26 of that. Roughly 97 percent of the increase sits in the cost of buying power, and transmission actually came down slightly over the same period.

This is also what Davao Light's president and chief operating officer, Engr. Enriczar Tia, told the City Council on 21 July. According to the City Information Office, he said the increase was "not caused by any increase in Davao Light's distribution charge", that the distribution rate has not changed since the Energy Regulatory Commission approved it in 2013, and that generation charges are pass-through costs under the Electric Power Industry Reform Act (EPIRA). The utility collects them from you and hands them on to the generators. The published tables back that up line by line.

The spot market doubled, not the dependence on it

The City Council's reaction has focused on how much of Davao Light's power comes from the Wholesale Electricity Spot Market (WESM). That share matters, but the monthly generation tables show something more specific.

In December 2025, 43.5 percent of the kilowatt-hours Davao Light bought came from WESM, at an average of ₱5.02 per kWh. In July 2026, the WESM share was slightly lower at 39.7 percent, but the average price had risen to ₱10.84 per kWh. The spot market more than doubled in price in seven months.

Meanwhile the other big supply sources behaved very differently:

• •PSALM, the government's power-asset corporation, supplied about 28 to 30 percent of the volume at ₱2.71 in December and ₱2.94 in July.
• •The largest bilateral contract, listed in the table as TSI, supplied about 18.5 percent both months, at ₱7.96 in December and ₱7.42 in July. That contracted price actually fell.

Total purchases also grew, from about 287 million kWh in December to about 356 million kWh in July. But volume is not the story. Davao Light spent about ₱627 million on spot-market power in December and about ₱1.53 billion in July, for only around 13 percent more spot-market energy.

That is why the monthly rate followed the spot price so closely. In both months, roughly two fifths of every kilowatt-hour was bought at whatever the market charged that month, and by July the market had become very expensive.

The June earthquake

On 8 June 2026 at 07:37, the Philippine Institute of Volcanology and Seismology recorded a magnitude 7.8 earthquake centred 32 km south of Maasim in Sarangani, at a depth of 33 km. A magnitude 6.4 aftershock followed at 08:55 the same morning, and a magnitude 6.5 event off Balut Island was recorded on 26 June.

Engr. Tia linked the generation cost increase to this. As the City Information Office reported, he explained that some generating facilities were affected by the earthquake, alongside the higher cost of power from the spot market. Davao Light's published figures do not name which plants were affected or for how long, and we are not going to guess. What the numbers do show is that the residential rate stepped up from ₱10.35 in May to ₱12.30 in June and ₱13.09 in July, and that the spot-market price is where the pressure landed.

For a household, the earthquake matters in a slightly unexpected way. It is a reminder that on an island grid, a supply shock anywhere in Mindanao can reach your bill within weeks, even when your own neighbourhood never lost power for a minute.

Why ₱13.09 is the cushioned number

There is a detail in the City's 22 July report that most people will skip, and it changes how to read the July rate.

The Energy Regulatory Commission approved Davao Light's request to defer part of the generation charges. Only a portion was put into the July bills. The rest is to be recovered in equal instalments from August to December.

In plain terms: without the deferral, the July bill would have been higher still. And whatever the spot market does next, those instalments are already scheduled to ride on top of the bills for the rest of 2026. If prices ease, the relief will be partly absorbed by the catch-up. If they do not, the catch-up adds to the pain.

This is the single most useful fact for anyone budgeting for the second half of the year. Do not plan on the rate falling back to ₱10 before January. Nothing in the published record so far supports that assumption.

What City Hall has done about it

The political reaction came quickly. On 20 July, Councilor Danilo Dayanghirang publicly called on Davao Light to explain the continuous increases, and the company's president appeared before the City Council the next day.

On 7 August, the City Information Office reported that the 21st Davao City Council had passed a resolution urging Davao Light to enter into long-term bilateral power supply agreements, and interim emergency contracts, with available base-load plants. The resolution names Therma South and other base-load generators in Mindanao. Councilor Louie John Bonguyan, who chairs the Committee on Energy and Water, argued that bilateral contracts give more stable rates than heavy reliance on the spot market.

Two things are worth understanding about that resolution. First, it is a request, not an order. The City Council does not set electricity rates, and any new power supply agreement needs approval from the Energy Regulatory Commission. Second, Councilor Bonguyan himself was careful about timing. He said lower rates could reach bills within several months if cheaper base-load power is secured and approved, and in the same speech he said it would not happen tomorrow or next month.

That is an honest timeline, and it is the right one to budget on.

What the numbers mean for your household

If you have not yet looked closely at your bill, three quick checks will tell you where you stand.

Look at your kilowatt-hours, not your pesos. If your consumption this July is close to last December's and the bill is a third higher, you are seeing the rate, not a fault, not a leak and not a meter problem. If consumption has jumped as well, that is the heat, and it is worth looking at the aircon habits described in our piece on aircon, brownouts and the Davao power bill.

Re-run your budget at ₱13 rather than ₱10. At July's rate, the energy part of a typical bill looks roughly like this:

• •300 kWh a month: about ₱3,930, up from about ₱2,910 in December
• •500 kWh a month: about ₱6,540, up from about ₱4,860
• •800 kWh a month: about ₱10,470, up from about ₱7,770

These are simple multiplications of the published average rate, before the small fixed and percentage items that also appear on a bill, so treat them as a floor rather than a quote. If your figures were built on the ranges in our cost-of-living breakdown, the electricity line now needs a buffer on top.

Do not count on the small-consumer discounts. Davao Light's lifeline discount and its senior citizen discount both apply only to eligible customers consuming 100 kWh a month or less. A home with even one air conditioner running at night will go past that in most months.

What a rate shock changes about choosing a home

The practical lesson of 2026 is not really about Davao Light. It is about how much of your monthly budget you are prepared to leave exposed to a price you cannot control.

When the rate moves by a third, the household that uses 300 kWh feels it as an irritation. The household that uses 1,200 kWh, for example a house with several split units, an electric water heater and a pump, feels it as roughly ₱4,000 extra every month. The difference between those two households was decided at the moment someone chose the property.

That makes a handful of questions worth asking at every viewing, and they are the same ones our neighbourhood guide and rental examples are built around:

• •How many air-conditioning units are there, and are they inverter units? The difference is explained in the aircon piece linked above.
• •Which rooms get the afternoon sun? The room you cool every night should not be the one that has been baking since two o'clock.
• •Is the unit separately metered by Davao Light, or billed by the building through a sub-meter? If it is sub-metered, ask what rate the building charges and whether it follows Davao Light's published monthly rate.
• •What does the building's generator actually cover? This matters for comfort during outages, and it matters doubly if you work from home, as described in working remotely from Davao.

None of this changes the rest of the arithmetic of living here, which is the case we make on the Davao page. But electricity was always the one line on a Davao budget that behaved like a bill from home, and this year it behaved like a bill from home in a bad year.

What to watch between now and December

Four things will decide what your bills look like for the rest of 2026.

• •Davao Light's monthly rate publication. The utility posts the average rate and the full generation breakdown on its rates page every month. The WESM line in the generation table is the one to watch.
• •The deferred instalments. They are scheduled from August to December, so they sit inside every bill until the end of the year.
• •Any new power supply agreement. If Davao Light signs a long-term contract with a base-load plant, as the City Council has asked, it still has to pass the Energy Regulatory Commission before it touches your rate.
• •Supply in Mindanao after the June earthquake. How quickly affected generating facilities return to normal output will show up in the spot-market price long before it shows up anywhere else.

Until at least one of those moves in your favour, ₱13 a kilowatt-hour is the honest planning number for a Davao household. Build it into the budget now, and anything lower will feel like a refund.