This calculator allows you to enter the cost of your upgraded equipment or building and the annual savings that result to calculate the Internal Rate of Return (IRR), Return on Investment (ROI) and Simple Payback. We have inserted example figures, but you will need to change these to reflect your own situation. Results are calculated for five, seven, 10 and 15 year periods.Steps:

1. Enter the cost of upgrading your current equipment (or building as a whole) in the first yellow highlighted box. Important: This figure must be negative.

2. Enter the expected fuel cost savings from the new equipment (or for building as whole after upgrades) in the second yellow highlighted box.

5. Click "Update".