Hitachi Consulting officially started our sustainability-focused consulting practice a little more than a year ago, but we have been helping customers in this area for a few years. One of the team’s first mandates was start to practice what we preach. We decided to implement an information system internally to track our environmental footprint. As part of this, we gathered up all the data we had that could be used to track our electricity, gas, water and paper usage in our office buildings as well as our employee air and car travel.
Going into this project, we expected that things like electricity use and air travel would be large contributors to our greenhouse gas footprint – and this turned out to be true. But, frankly, we were surprised at the results because the impact of one of these was so disproportionately large. We found that our employee air travel makes up about 80 percent of our greenhouse gas footprint and has consistently done so for the last few years. The other two big components are employee car travel and office electricity use, which each account for about 10 percent of our GHG footprint. We also know that our current method for calculating employee car travel does not reflect all car miles, so we expect that the percentage for this would actually be slightly higher.
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