LED retrofit power savings

LED Retrofit Power Savings

→ The power savings achieved by retrofitting industrial lighting with LED fixtures can vary widely depending on several factors, including the existing lighting technology, the new LED fixtures' efficiency, and the number of hours the lights are in use.

→ To calculate power savings, you'll need to consider these variables and use the following formula:

→ Power Savings (in watts) = (Existing Power Consumption - LED Power Consumption) x Number of Hours in Use x Number of Fixtures

→ Here's a step-by-step example of how to calculate power savings:

Determine the Existing Power Consumption
Determine the LED Power Consumption
Calculate the Number of Hours in Use
Calculate Power Savings

(1). Determine the Existing Power Consumption

→ First, you need to find out how much power the existing lighting fixtures consume.

→ This information can typically be found on the fixtures or in the documentation that came with them. It's usually measured in watts (W).

→ Example: Let's say you have 100 metal halide fixtures, each consuming 400 watts.

→ Existing Power Consumption = 100 fixtures × 400 watts/fixture = 40,000 watts (or 40 kW)

(2). Determine the LED Power Consumption

→ Next, you need to find out the power consumption of the LED fixtures you plan to retrofit with.

→ LED fixtures are known for their energy efficiency, so this value will likely be lower than the existing fixtures.

→ Example: Your chosen LED fixtures consume 150 watts each.

→ LED Power Consumption = 100 fixtures × 150 watts/fixture = 15,000 watts (or 15 kW).

(3). Calculate the Number of Hours in Use

→ Determine how many hours per day the lights are in use.

→ For industrial settings, this can vary, but it's often around 10-12 hours per day.

→ Example: Assume the lights are used for 12 hours per day.

→ Number of Hours in Use = 12 hours/day.

(4). Calculate Power Savings

→ Use the formula mentioned earlier to calculate the power savings.

→ Power Savings = (Existing Power Consumption - LED Power Consumption) × Number of Hours in Use × Number of Fixtures

→ Power Savings = (40 kW - 15 kW) × 12 hours/day × 100 fixtures = 25 kW × 12 hours/day × 100 fixtures = 300 kWh/day

→ So, in this example, retrofitting 100 metal halide fixtures with LED fixtures would result in a daily power savings of 300 kilowatt-hours (kWh).

→ To determine the annual savings, you would multiply this by the number of days the lights are used in a year.

→ Keep in mind that this is a simplified example, and actual savings can vary based on factors such as fixture efficiency, usage patterns, electricity rates, and maintenance costs.

→ Additionally, you may want to consider the environmental benefits of reduced energy consumption when evaluating the overall impact of an LED lighting retrofit in an industrial setting.

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