The monthly cost of a street light is mainly the electricity it uses, plus any added costs such as maintenance contracts, control system fees, or utility “street lighting tariffs” that bundle energy and service. There is no single universal number because the cost changes with fixture wattage, operating hours, and your local electricity rate. The good news is that you can estimate it quickly with a simple formula, then refine it with your project’s real rate and dimming schedule.

If you are planning a roadway upgrade or new installation, you can review FEIDONG’s LED street light options to match wattage, optics, and control requirements.

The Simple Formula To Estimate Monthly Street Light Cost

Use this basic calculation:

• Monthly kWh = Power in kW × Operating hours per month

• Monthly energy cost = Monthly kWh × Electricity rate per kWh

For dusk-to-dawn street lighting, a commonly used planning assumption is about 4,303 operating hours per year, which equals roughly 359 hours per month on average. :contentReference[oaicite:0]{index=0}

That means you can estimate monthly energy consumption like this:

• Monthly kWh ≈ (Watts ÷ 1000) × 359

Examples of monthly kWh using 359 hours:

• 60W fixture: 0.06 × 359 ≈ 21.5 kWh per month

• 100W fixture: 0.10 × 359 ≈ 35.9 kWh per month

• 150W fixture: 0.15 × 359 ≈ 53.9 kWh per month

• 200W fixture: 0.20 × 359 ≈ 71.8 kWh per month

This approach is accurate enough for early budgeting and comparison between LED wattages, especially when the project uses consistent dusk-to-dawn control.

Typical Monthly Energy Cost Examples For Common LED Wattages

Electricity price is the second big variable. To show how the numbers move, the table below uses:

• US commercial average around 13.46¢ per kWh (recent national-average reference point) :contentReference[oaicite:1]{index=1}

• EU non-household average about €0.1902 per kWh (recent reference point) :contentReference[oaicite:2]{index=2}

• Operating hours ≈ 359 per month :contentReference[oaicite:3]{index=3}

What this means in practice:

• A typical led street light often costs a few dollars to the low teens per month in energy, depending on wattage and rate.

• Projects that replace older technologies usually reduce monthly cost because LEDs can deliver required road lighting levels with lower wattage and better optics.

Costs Beyond Electricity That Can Change The Monthly Total

Energy is not always the full monthly cost. Depending on how street lighting is billed and managed, you may see additional items.

Common non-energy cost components:

• Maintenance and service
  Lamp replacement, driver replacement, cleaning schedules, and troubleshooting can be paid as a separate contract or included in a utility tariff.

• Utility street lighting tariffs
  In some regions, utilities charge a fixed monthly fee per luminaire that may include energy, maintenance, and administration. This can make the bill look higher than a pure kWh calculation.

• Controls and monitoring
  Photocells are simple and low cost, while networked control systems may add fees for nodes, software, or data services.

• Pole and infrastructure costs
  If poles, arms, wiring, or trenching are financed or leased, you may allocate these as a monthly cost in project accounting.

For budgeting, it helps to split monthly cost into:

• Energy cost that scales with kWh

• Fixed cost per light that scales with the number of fixtures

This makes it easier to compare options, especially when you are planning an upgrade across many streets.

What Drives Street Light Energy Cost Up Or Down

If you want to lower monthly cost without losing road safety performance, focus on the factors that reduce required wattage and improve useful light delivery.

Key levers:

• Optical distribution matched to the road
  Correct optics place more light on the driving surface and less off-road, reducing the need to oversize wattage.

• Pole height and spacing
  Wider spacing can increase required output, but a good optic choice can improve uniformity without simply increasing power.

• Dimming schedules
  Many municipalities reduce output during low-traffic hours. Even modest dimming can cut energy use meaningfully across a full year.

• Driver and thermal design
  Stable drivers and good thermal management help maintain performance, so you do not need to over-spec power to compensate for heat and aging.

• Target lighting criteria
  Projects should be designed to meet the required roadway targets with controlled glare and uniformity, rather than selecting wattage from a generic rule-of-thumb.

If you are comparing two fixtures with the same wattage, the one with better optics and real photometric support often achieves the target with fewer fixtures or lower power levels in the final design.

How FEIDONG Helps You Estimate And Optimize Monthly Cost

FEIDONG supports LED street lighting projects where the goal is not only illumination, but predictable operating cost. By matching wattage, optics, and control strategies to your roadway layout, you can reduce wasted light and avoid oversizing. For large deployments, we can help you build a consistent configuration plan so monthly cost and performance remain stable across districts and road types.

You can explore our solutions here: LED street light.

Conclusion

A street light’s monthly cost is mainly its energy use, calculated from wattage, dusk-to-dawn operating hours, and your local electricity rate. Using a common dusk-to-dawn assumption of about 359 hours per month, many LED street lights typically land in the range of a few dollars to the low teens per month for energy, with the final total depending on fixed fees, maintenance, and control system choices. The most reliable way to reduce monthly cost is to choose the right optics and wattage for the road layout, then confirm performance with a photometric plan and an appropriate dimming schedule.

If you want a fast monthly cost estimate for your specific roads, send FEIDONG your target wattage range, pole height, spacing, and local electricity rate. We can recommend a suitable configuration and provide practical guidance and customization support based on our LED street light lineup.