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With the LED ROI Calculator web application finally completed, I thought I would explain how one would read the chart, what to expect ... read more
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VIALED ROI Calculator Chart

VIALED ROI Calculator Chart

With the LED ROI Calculator web application finally completed, I thought I would explain how one would read the chart, what to expect and a bit on its requirements.

First off, this chart requires HTML5 to function properly since it uses the “<canvas>” tag which is only available to HTML5.  All current browsers support HTML5 (even on smart phones and tablets), so there shouldn’t be a problem. If so you may need to upgrade your browser.  While this version of the ROI calculator will work properly on a Smart phone when viewing the desktop version it is too big to fit on the mobile layout for proper viewing, hence why it is disabled on the mobile layout.

Second, the chart updates itself in real-time when the information you entered at the top of the graph changes.  This means that depending on the speed of your system, you experience a delay before the chart is drawn.

Third, is the labeling of the chart’s axes. The X-axis is the number of years after the installation of the LED lights. The Y-axis to the left is for the bar graph, which is used to indicate your losses or savings (based on the difference between the operating costs) you would expect after X number of years. The Y-axis to the right is for the two line graphs in the chart.  The purple line indicates your current budget lighting costs while the blue line indicates your LED costs or losses after X number of years.

Forth, is the “Annual Energy Costs and Savings” information.  This information is based on the cost of electricity(cost/kWh)  you entered only. This cost can include delivery and transportation(which is based on kWh used) as well since this will give you a more accurate estimate of savings.

Fifth, is about the default input information on the chart.  It is all just made up to show what the chart can do. So if you’re wondering if they are based on a real world example, it is not.

Just a final note or disclaimer, the results calculated are estimates and may vary from actual results obtained.  This chart is for providing an estimate of when one can expect to receive the payback for implementing LED lights as well as the amount of money saved afterwards. Enjoy!