The annual cost of lighting is a significant expense for any business. From large malls to factories, efficient operations require careful planning of these costs. For many commercial buildings, lighting can account for up to 40% of total electricity consumption. This isn't just an expense; it's a major factor in operational strategy.
Accurately calculating your yearly lighting expenses helps you create precise budgets and make smarter purchasing plans. In this blog, we’ll explain how to calculate the annual price for lighting fixtures to assist you make a more budget friendly lighting decision.
Many businesses choose lighting fixtures based solely on their initial cost, but this doesn't paint the full picture. A cheap fixture may seem like a bargain at first, but if it uses more electricity or has a shorter lifespan, it could end up costing you more in the long run. By calculating the annual cost, you can get a clearer picture of the true value of a lighting fixture.
Besides, investing in energy-efficient lighting may require a higher upfront cost, but the ROI becomes distinct over time. For example, an LED fixture may cost more initially, but it can last up to 25,000 hours and use only a fraction of the electricity compared to a traditional bulb. This makes the annual cost calculation a useful method for comparing long-term savings between different fixture options.
The main cost of lighting is the price of the fixtures themselves. Prices vary widely depending on the type, brand, and features. For example, basic fluorescent lamps are inexpensive, while LED spotlights and smart lighting systems are more costly. You also need to factor in the installation, which includes the cost of labor, and any materials needed to set up the lights.
What’s more, you should consider the lifespan of lighting fixtures which greatly affect your lighting system replacement or upgrade. Here are the average usage hours for different light sources.
| Lighting Sources | Average Usage Hours |
|---|---|
| LED | 25,000 - 50,000 hours |
| Fluorescent Lamps | 8,000 - 15,000 hours |
| Halogen Lamps | 2,000 - 4,000 hours |
| Incandescent Lamps | 1,000 - 2,000 hours |
Using this formula to calculate annual lighting fixtures cost.
Annual Lighting Fixtures Cost = (Lighting Fixtures Price + Installation labor fee) / Yearly Lighting Fixtures Lifespan
Example: Annual Lighting Fixtures Cost = ($1000+$300)/11 years = $118
The energy consumption cost of lighting fixtures accounts for a relatively large proportion of the total annual expenses, especially for commercial places with long lighting periods.
Before you calculate the electricity cost, you have to gather the key data as below:
● Lighting fixtures wattage
● Hours of use per day
● Electricity rate
For the first one, you can easily find out on the package of lighting fixtures or ask your lighting provider.
In terms of lighting use hours per day, the most pleasant way is manual tracking. Recording when each light is turned on and off, using either a basic table or a digital file. However, for large buildings or areas, it will be much more complex. The lighting requirements vary greatly among different places. The best approach is to calculate by region.
Here is a reference for usage time in different applications, but the specific lighting usage hours depend on your own situation.
● Office: 12 hours
● Retail store: 12 hours
● Public hallway: 16 hours
● Underground parking lot: 24 hours
The cost of electricity isn't the same everywhere. It differs depending on the state or region. You can consult the U.S. Energy Information Administration (EIA) website or use online comparison tools, like ElectricityRates.com and SaveOnEnergy.com allow you to compare electricity rates by state and provider.
After collecting the above data, you can start the calculation of energy usage. Here is the formula:
Energy Usage (kWh) = (Wattage × Hours of Use per Day × Days of Operation per Year) ÷ 1000
Example: Energy Usage (kWh) = (60W×12 hours × 365 days) ÷ 1000 = 263 kWh
kWh stands for kilowatt-hour, and it's a unit of energy. It's the standard unit that utility companies use to measure and bill your electricity consumption.
After calculating energy usage, using the below formula to count annual energy cost.
Annual Energy Cost = Energy Usage (kWh) × Electricity Rate ($/kWh)
Example: Annual Energy Cost = 263 kWh × 0.26 per kWh = $68.38
In addition, to keep your lighting system working properly, you'll also need to budget for regular inspections and maintenance of the lights. Make sure to include these costs in your annual expenses. Use this formula to add it up.
Total Annual Cost = Annual Energy Cost + Annual Maintenance Cost + Annual Depreciation Cost
Example: Total Annual Cost = $68.38 + $40 + $118 = $226.38
Cutting down on yearly lighting costs is key to boosting profits. High lighting bills can really eat into a business's earnings and hurt its financial well-being. By finding smart ways to lower these costs, companies can ease their operational burden and help the environment too. Here is some useful advice to reduce the annual lighting cost.
● Choose energy-saving LED lights: LED lights use less energy and last a long time. While they cost more to buy upfront, they save you money in the long run on energy bills and maintenance, making them better value overall.
● Bulk order: For commercial enterprises with a large demand for lighting fixtures, adopting a bulk purchasing approach can lead to more favorable prices.
● Leverage natural light: Make use of natural light to reduce the time spent on lights. You can consider using a solar lighting system in outdoor applications.
● Use smart automation: Install motion sensors in low-traffic areas like restrooms, breakrooms, and storage to reduce energy consumption.
● Rationalize lighting times: Turn off the lighting in some areas during non-business hours.
Quickly calculating the annual cost of lighting fixtures doesn’t require an expert in electrical engineering. Just following the steps according to this article, anyone can easily find out the accurate lighting fixtures budget. In actual operation, businesses should flexibly apply these methods in their own need.
If you select cost-saving lighting solutions, LEDVANCE is one of the best lighting providers for commercial areas or buildings. Contact us to make a personalized lighting system and reduce your annual lighting fixtures cost.
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