The short answer
Using the selected 65-inch model example and January 2026 tariff assumptions, four hours a day costs roughly HK$24 a month on CLP, or HK$27 in the HK Electric area — considerably less than most people assume. A television is not a heavy load in a Hong Kong home, and the cited New Zealand annual-energy label uses ten viewing hours a day; other markets and labels may use a different method.
The calculation, which you can run yourself
The formula is trivial:
Monthly cost = watts × hours per day × 30 ÷ 1000 × price per kWh
The hard part is not the arithmetic — it is which wattage to use. Specification sheets usually list three:
- Power Consumption (Max) — peak load: a full-white screen with brightness at maximum. Do not use this to estimate a bill.
- Power Consumption (Typical) — the average during normal viewing. This is the one to use.
- Power Consumption (Stand-by) — usually 0.5W on a current set.
How far apart are they? A real example: Samsung lists the S90F OLED 65-inch at 510W max and 145W typical — a factor of 3.5. The same-size QN85F Neo QLED is 240W max and 140W typical, a factor of 1.7. The OLED draws far more at peak highlights, but its average during ordinary viewing is almost identical to the Mini LED set. Estimate from the Max figure and you would conclude the OLED costs about 2.1 times as much (510 ÷ 240 = 2.125) to run — which is simply wrong.
What a unit of electricity costs in Hong Kong (2026 official figures)
| Supplier | 2026 average net tariff |
|---|---|
| CLP (Kowloon, New Territories, most outlying islands) | 140.6 cents per unit (about $1.41) — 101.2 cents basic plus 39.4 cents fuel cost adjustment, effective 1 January 2026, down 2.6% on 2025 |
| HK Electric (Hong Kong Island, Ap Lei Chau, Lamma) | 163.3 cents per unit (about $1.63) — 127.9 cents basic plus 35.4 cents fuel clause charge, January 2026, down 2.2% on January 2025 |
Both suppliers charge in tiers: the more you use, the higher the rate on the upper blocks, so a heavy household's marginal rate exceeds the average. The fuel component also moves monthly. The figures below use the average net tariff as a grounded estimate, not a precise forecast.
What it actually costs: four official models at four hours a day
| Model | Official wattage | Monthly use and cost |
|---|---|---|
| U8500F Crystal UHD 55-inch | 125W max / 79W typical | about 9.5 kWh = $13 CLP / $15 HK Electric |
| QN85F Neo QLED 65-inch | 240W max / 140W typical | about 16.8 kWh = $24 CLP / $27 HK Electric |
| S90F OLED 65-inch | 510W max / 145W typical | about 17.4 kWh = $24 CLP / $28 HK Electric |
| U8500F Crystal UHD 75-inch | 220W max / 136W typical | about 16.3 kWh = $23 CLP / $27 HK Electric |
Notice the pattern: going from 55 inches to 75 inches changes the bill by around ten dollars a month. At the same size, the gap between OLED, Mini LED and Crystal UHD is smaller still — the two 65-inch sets differ by 5W. These selected examples do not establish a rule for every display technology; calculate using the actual SKU's typical wattage. For what genuinely separates these technologies, see our Mini LED vs OLED vs QLED comparison.
Why the yearly figure on the spec sheet looks so alarming
Specification sheets quote figures like "499 kWh a year" or "532 kWh" — which convert to several hundred dollars annually. Where does that come from?
The cited New Zealand label assumes ten hours on and fourteen hours standby daily. At 136W, viewing energy alone is 136 × 3,650 ÷ 1,000 = 496.4kWh. Confirm the actual label's market and test method; this assumption is not universal.
At 136W for four hours daily, annual viewing energy is 136 × 1,460 ÷ 1,000 = 198.56kWh. At the article's January 2026 CLP assumption of HK$1.406/kWh, that is about HK$279.18, excluding standby. It is not a current bill guarantee.
Note too that an international-version set's energy data follows the test method of its home market, so the practical approach is to read the Typical wattage row on the official specification sheet and put it through the formula above. Hong Kong also operates a mandatory energy efficiency labelling scheme covering televisions.
Standby power: the honest number
If the specified standby mode is 0.5W, 24 × 30 hours uses 0.36kWh, about HK$0.51 at the January CLP assumption. Network standby and enabled wake features may draw more; confirm the exact SKU's mode.
The saving from disconnecting power depends on actual standby or network-standby wattage and idle hours, not the model year alone. Follow the manual for power arrangements and OLED care cycles. A surge-protected strip does not guarantee protection from lightning. For habits that genuinely affect how long a set lasts, see our article on daily habits and TV lifespan.
Three things that do save electricity
- Turn the brightness down. LCD backlight output and OLED pixel brightness can affect consumption. Brightness, picture mode and HDR content can all affect consumption; choose settings suitable for the room and content rather than assuming a fixed saving.
- Switch on the Eco Sensor and auto power saving. Models whose official specification sheet lists these as "Yes" do not always ship with them enabled. Turn them on and the set adjusts brightness to room lighting automatically.
- Switch it off when nobody is watching. Dull but decisive. Leaving a set running as background noise is the only habit that meaningfully raises consumption — four extra hours a day doubles the bill.
So should running costs affect which set you buy?
Honestly: not much. Moving from 55 to 75 inches costs about ten dollars more a month; choosing OLED over Mini LED at the same size costs a few dollars. These figures should not drive the decision — whether the size suits your room, whether the picture suits your viewing, and what the warranty actually covers all matter far more.
To browse, start with the smart TV collection; if 65 inches suits your measured space, compare the 65-inch collection, with OLED sets in the OLED collection. Warranty terms — free on-site inspection and repair labour within three years, with any parts replacement quoted separately — are set out in the international-version warranty policy.
Frequently asked questions
How much does a TV cost to run per month?
For the selected model examples, at four hours a day and the January 2026 tariff assumptions, the 65-inch example costs roughly $24 a month on CLP and $27 in the HK Electric area; a 55-inch about $13 / $15; a 75-inch about $23 / $27. The method is: official Typical wattage x hours per day x 30 / 1000 x price per unit. Using the January 2026 assumption, CLP's average net tariff is 140.6 cents per unit and HK Electric's is 163.3 cents.
Do OLED televisions use a lot of power?
For the two cited models, compare their stated maximum and typical figures separately. Samsung lists the S90F OLED 65-inch at 510W max and 145W typical; the same-size QN85F Neo QLED is 240W max and 140W typical. The OLED draws far more during full-white frames and HDR highlights, but the two differ by just 5W in typical viewing — under a dollar a month.
The spec sheet says over 500 kWh a year. Is that real?
The cited New Zealand label uses ten hours daily. Confirm your label's market and method. Viewing at four hours uses 40% of the ten-hour viewing energy, but standby must be calculated separately.
Does unplugging the TV save money?
At a specified 0.5W standby mode, a full month uses 0.36kWh, about HK$0.51 on the January CLP assumption. Network standby may differ. Follow the manual for safe power use; a surge protector does not guarantee protection from lightning.
Do larger televisions cost much more to run?
Less than people expect. Officially the 55-inch draws 79W typical and the 75-inch 136W — at four hours a day that is roughly $13 versus $23 a month on CLP, a difference of about ten dollars. Whether the size suits your room and viewing distance matters far more than that gap.
About this article
Tariffs come from CLP and HK Electric 2026 tariff announcements; consumption figures from Samsung official model specification pages; the ten-hours-a-day label assumption from New Zealand's Energy Efficiency and Conservation Authority. The fuel component changes monthly and both suppliers charge in tiers, so the amounts here are estimates. Figures for any individual model follow that model's official specification sheet.
