Running cost of a DOOH screen: kWh per day to AED per month
A DOOH screen's monthly electricity bill isn't the rated wattage times 24 hours, it's the average power draw running real content, times actual operating hours, times the applicable commercial tariff, and skipping any one of those three adjustments produces a materially wrong estimate.
Key Takeaways
- The correct running-cost formula is average power draw (kW) × actual daily operating hours × commercial electricity tariff (AED/kWh), not the panel's rated maximum wattage, which overstates real consumption because it assumes full-white, full-brightness content around the clock.
- Real content (mixed colours, not full white) typically draws only 30-50% of a panel's rated peak wattage on average, which is the single biggest source of over-estimated DOOH running-cost projections.
- Operating hours matter as much as power draw: a screen running 12 hours a day costs half as much to run as an identical screen running 24 hours a day, all else equal, so the schedule assumption belongs in the estimate explicitly.
- UAE commercial electricity tariffs are billed on a fils-per-kWh basis that varies by emirate and consumption tier; confirm the current applicable rate with the local utility (DEWA, EtihadWE, SEWA, or the relevant authority) rather than assuming a fixed figure, since rates are revised periodically.
A DOOH screen's electricity bill is the product of three numbers, average power draw, operating hours, and tariff rate, and the most common estimating mistake is skipping the "average" adjustment on the first one and using the panel's rated maximum wattage instead. That single substitution can overstate the real running cost by roughly half, which matters directly when running-cost projections feed into a site's revenue-versus-cost case.
Start from average draw, not rated maximum
LED panel datasheets publish a maximum power rating measured under full-white, full-brightness test content, the worst case the panel can produce, not what it typically draws running real advertising or informational content. Actual average power draw running mixed-colour content is commonly only 30-50% of that rated maximum. Using the rated maximum figure in a running-cost calculation systematically overstates the real electricity bill, sometimes by a factor of two, which is the single most common error in DOOH running-cost estimates. Run your specific panel's rated wattage and expected content mix through the LED screen power requirements calculator to get a realistic average draw figure rather than defaulting to the peak spec.
Multiply by actual operating hours, not a blanket 24
A DOOH screen's daily kWh consumption is average power draw (in kW) multiplied by the hours it's actually switched on and displaying content, not a default assumption of continuous 24-hour operation. A screen running 12 hours a day, common for many retail or transit applications with defined operating hours, consumes half the daily kWh of an identical panel running around the clock, all else equal. Confirm the actual planned operating schedule for the specific site before running the cost projection, since this variable changes the final AED figure as much as the power-draw assumption does.
Convert to AED using the correct commercial tariff
UAE electricity is billed on a fils-per-kWh basis, and the applicable commercial rate varies by emirate (DEWA in Dubai, EtihadWE across Abu Dhabi and the Northern Emirates, SEWA in Sharjah) and by consumption tier under each authority's tariff structure. This is the final multiplier in the calculation: daily kWh × the specific commercial fils/kWh rate applicable to the site's location and consumption tier, summed across the billing period. Because tariffs are periodically revised and vary by emirate and tier, confirm the current applicable rate directly with the relevant utility for the specific site rather than relying on a remembered or generic figure, since a stale tariff assumption compounds the same way an overstated power-draw assumption does.
Putting the calculation together correctly
The full chain is: rated maximum wattage → adjusted down to realistic average draw for actual content mix → multiplied by actual daily operating hours, not a default 24 → converted to kWh → multiplied by the current, location-specific commercial tariff → summed to a monthly AED figure. Each step corrects a common shortcut that, on its own, would overstate the final number. Skipping the average-draw adjustment alone can double the estimate; skipping the operating-hours adjustment on top of that compounds the error further. Once the monthly AED figure is realistic, it belongs in the broader site economics worked through with an LED business planning specialist, rather than sitting as an isolated running-cost line disconnected from the rest of the deployment case.
Frequently asked questions
Is it safe to estimate DOOH running cost using the panel's rated maximum wattage?
No, this is the most common source of overstated running-cost estimates. Rated maximum wattage reflects full-white, full-brightness test conditions, not real content, and actual average draw running mixed content is typically only 30-50% of that peak figure.
Does a brighter screen always cost proportionally more to run?
Generally yes, since higher brightness settings require more drive current and therefore more power, but the relationship isn't perfectly linear across all content types and panel technologies. Confirm against the specific panel's published brightness-vs-power data rather than assuming a simple proportional relationship.
Where do I find the current commercial electricity tariff for my site?
Directly from the relevant local utility authority for your emirate (DEWA, EtihadWE, or SEWA), since tariffs are tiered and periodically revised, and using a remembered or generic rate risks a materially wrong running-cost estimate.
The bottom line
A correct DOOH running-cost estimate corrects the panel's rated maximum wattage down to a realistic average draw, applies the actual operating-hours schedule rather than assuming continuous operation, and multiplies by the current, location-specific commercial tariff, not a generic or remembered rate. Skipping any one of those three adjustments produces an estimate that's wrong in a predictable, correctable direction.
Figures were verified on 10 September 2026 against general LED display power-draw methodology. Web search was unavailable for portions of this research, including live confirmation of current DEWA/EtihadWE/SEWA commercial tariff rates; confirm the specific current fils-per-kWh rate applicable to your site directly with the relevant utility authority before finalising a running-cost budget.
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