First, there’s the reduced energy use. The LED method of producing light loses far less energy to heat than do other lighting technologies. It’s dramatically more efficient than the vacuum/filament method used in incandescent bulbs — sometimes around 85 percent more efficient; and it’s even about 5 percent more efficient than the CFL’s plasma-tube approach [source: Taub].
In designing a new or existing built environment, lighting is an essential component that enables increased workplace productivity, safer working conditions and best practice.
Lighting is a key component of a building’s energy consumption and operating costs. Energy consumption is a driving factor when assessing the buildings Carbon foot print and therefore lighting design is a critical component in delivering a more sustainable and productive environment.
How do LEDs work?
LED technology has been around since the 1960s and has long been used in the displays of digital clocks and watches, in remote controls to generate infrared (IR) signals and as the green/red indicator light on appliances. Scientific advances since the early 2000s have allowed for use in an increasing number of devices and settings; for example public signage and traffic lights, display backlighting in mobile phones and high-definition televisions and to replace traditional forms of lighting.
LEDs or ‘Light Emitting Diodes’ are lighting devices that are solid-state, meaning that electricity flows through a solid material. The diode in an LED is what radiates light and is a simple semiconductor; materials with different abilities for electrical conductivity are known as semiconductors. Semiconductors only partially conduct electricity and impurities (different materials) are often added to increase conductivity.
The key advantages of LEDs are their efficiency, lifecycle and durability. They emit more light per watt than incandescent, fluorescent (including compact fluorescent), halogen and high-intensity discharge (HID) lights. LED lights have a useful lifetime that exceeds existing forms of lighting. LEDs also resist damage from turning on/off and physical shock because they are solid-state components.
Energy management aims to reduce the amount of energy a building or environment consumes.
Good energy management starts with assessing how a building uses energy. This covers all the energy requirements of which lighting is just one contributor. The total value of kWh can be calculated from existing usage along with product knowledge of all the individual components that require energy.
The next stage is to identify high energy consumption areas and assess available options to reducing the inefficiencies identified. Lighting technology has advanced significantly since the 1970’s and up to 80% of lighting energy requirements can be reduced by switching to LED.
Effective energy management will result in long term cost savings, however it’s true intention is to reduce carbon output globally.
The overall benefits of switching to LED are many:
- LED technology has long lamp life in excess of 50,000/hrs
- Reduced AC loading – because our lights emit minimum heat dramatically
- Lower energy consumption –compared to other halogen, incandescent and fluorescent tubes fittings
- Peak demand reduction
- Dali PSU protocol for interfacing with electronic systems for lighting control and energy management.
- Lower glare and evenly distributed light emissions
- Lower maintenance costs
- Lower energy costs
- Demonstrates and supports corporate and social responsibility
Book a site assessment for a complete evaluation of your energy costs and savings.
Reducing greenhouse gas emissions is a global problem with global consequences. While climate changes can occur naturally, there is now general agreement that global warming over the last 50 years is very likely the result of human activities, specifically the emission of greenhouse gases into the atmosphere.
Since 1950, Australia’s average annual temperature has increased by 0.9°C. If global emissions remain high, by 2070 the average annual temperature is projected to increase by a further 2.2 to 5.0°C Australia has about 0.3% of the world’s population, but contributes about 1.5% of total greenhouse gas emissions. Australians among the highest per capita emitters.
There are many opportunities for businesses in Australia to reduce their carbon emissions. One way is by improving energy efficiency and greater use of renewable energy sources to reduce their electricity costs. LED lighting is a quick, effective solution where businesses can start to make an immediate impact on their contribution to emissions.
LED Lighting Distributors are committed to helping reduce greenhouse gas emissions.
ROI Calculations for LED
Calculating your energy and cost savings is a precise formula that will give you a true representation of the real value of switching to LED lighting. These are the calculations we complete to provide information for the return on investment (ROI)
STEP 1. DETERMINE OPERATING COSTS
Annual power consumption (start with fitting A):
• Power consumption A (kWh) = Rated power of A (kW) x quantity of A
Repeat for other lights B, C, etc.
• Total power consumption (kWh) = Power consumption A (kWh) + power consumption B (kWh) + power consumption C (kWh) etc.
This is the total power consumption per hour. The annual power consumption can then be estimated.
• Annual power consumption (kWh) = Total power consumption (kWh) x operating hours per day x consumption days per year
Annual operating cost:
Having determined the annual power consumption we can calculate the annual operating cost. Electricity is typically billed per kWh ($).
• Annual operating cost ($) = Annual power consumption (kWh) x electricity cost per kWh ($)
STEP 2. DETERMINE MAINTENANCE COSTS
For maintenance costs, we calculate a ‘maintenance factor’ based on the fitting, rated lifetime and annual operating hours. This ‘maintenance factor’ is then used to estimate material and labour expenses.
Annual material & labour costs:
• Material cost ($) = Cost of fitting ($) x quantity of fittings x maintenance factor
• Labour cost ($) = Labour cost per fitting ($) x quantity of fittings x maintenance factor
Savings on air conditioning costs due to low heat generation can also be added into this section of the calculation.
STEP 3. DETERMINE CAPITAL COSTS
The capital cost is the initial cost of the upgrade. This is factored into our ROI equations in full so our clients know how long it will take for an installation to pay for itself.
• Capital cost ($) = Cost of fitting ($) x quantity of fittings
STEP 4. RETURN ON INVESTMENT (ROI)
The ROI document we provide takes all of these costs into account. The return is separated into yearly amounts and the performance of our installation is shown over a 10 year period. The information on the ROI clearly states how long it will take to provide a return based on energy savings.
N.B. The term ‘fitting’ in these calculations can refer to traditional and LED lights, ballasts or power supply units (PSU). Also note that existing installations will not have capital costs for our calculations as they have already been paid for.
LED Lighting Distributors can provide a solution using our energy savings calculator to generate a valid business case to support making a change today.
The LED Lighting Distributors difference
We have been affiliated with the property industry for over 30 years
Full LED product range
Our products have high energy efficiency which means there is a reduction in both energy consumption and electricity cost.
Fully tested and certified for use in Australia and New Zealand.
Dimming and networking options, lighting system compatible with DALI PSU, motion-sensor compatible.
No UV light, no hazardous materials in construction, low level EMI, and low heat generation.
High quality light
White and warm colours, high lumen output, high colour rendering index (CRI) and superior light distribution.
Ability to design and manufacture LED lighting products specific to client needs.