When we conducted our first carbon footprint analysis in FY07, we began our process to define, measure, and manage our carbon footprint. We did this by applying the WRI/WBCSD Greenhouse Gas (GHG) Protocol and estimating our emissions comprehensively across a range of activities, including our office operations, and employee travel and commuting, which collectively constituted 83% of our footprint in FY13. Based on this work, we set a carbon reduction goal and developed programs to cut our GHG emissions 20% by FY12, compared to an FY07 baseline. In FY11 we reached our reduction goal ahead of schedule, and committed to reducing our carbon footprint an additional 10% by FY16, for a total of a 30% reduction in absolute terms.
Total GHG emissions and GHG emissions per full-time employee
|Progress to goal bar graph|
|Total CO2e (gross of RECs)||293,558||273,507||231,417||227,198||243,316||283,491||243,074|
|Total CO2e (net of RECs)||293,558||273,507||231,417||227,198||243,316||257,167||190,311|
|CO2e per FTE||9.5||8.9||7.4||7.2||7.3||7.0||4.9|
All of the energy we used in our offices in FY13 came from renewable sources. We purchased renewable energy certificates, which mitigated our workspace energy use. This and other efforts have helped us to exceed our FY16 goal. But merely reaching our goal is not enough. We know it is important to demonstrate our ability to sustain this level of reduction for the long term. The challenge ahead is to manage our carbon emissions as the firm increases the overall numbers of partners and staff to meet the needs of our clients. In addition to our focus on absolute carbon reduction, we also continue to monitor our emissions by full-time employee. Since our initial measurement in FY07, we have reduced our emissions per employee by 49%.
To stay on track in terms of our 30% reduction goal, we are continuing to build on our environmental strategy with a variety of approaches, including exploring ways to manage our air travel, being flexible in where we work, improving the efficiency of our offices, and leveraging the enthusiasm of our Green Teams.
Breakdown by major emission category
Scope 1, 2, and 3 emissions
|PwC U.S. carbon footprint composition – Breakdown by major emission category||%|
|PwC U.S. carbon footprint by scope||Metric tons of CO2e|
|Scope 1 – Diesel||97|
|Scope 2 – Electricity||52,763|
|Scope 3 – Air, commute, reimbursed miles, other||190,214|
Our GHG footprint is calculated using a detailed and documented methodology. We use the following standards in calculating emissions, as relevant:
These standards include assumptions about the composition of GHGs in various kinds of emissions. While the vast majority of our GHG emissions are CO2, our calculation also includes other GHGs, for example, from car and bus exhaust. We report in CO2e, which accounts for these other GHGs. We do not have any biogenic emissions.
The baseline year for our GHG footprint is FY2007, which corresponds to the expansion of our corporate responsibility efforts and focus on reducing our environmental footprint.
We consolidate our emissions calculation based on operational control within the United States.
Our GHG footprint calculation includes the WRI/WBCSD Scopes 1, 2, and 3 as described below. Our GHG intensity ratio calculation includes Scopes 1, 2, and 3. The denominator is full-time equivalent employees (FTE), a measure of the number of people we employ. As a professional services firm, our emissions are driven by the activities of our employees in the delivery of their professional duties, so this is the most relevant factor by which to normalize our emissions.
Scope 1: We have very limited direct (Scope 1) emissions, which are related to the use of diesel fuel for backup generators.
Scope 2: Our Scope 2 emissions are those related to energy consumption in our workspaces. We currently include all U.S.-based operations. We lease nearly all of our workspaces and our energy use is most often embedded into the overall operating expenses of our leases. In cases where we have energy meters in our leased spaces, they typically measure energy used for lighting, plug loads and computer room heating, ventilation and air conditioning (HVAC), but miss the significant energy used to heat and cool our spaces. We are working to determine the best mix of submetering solutions and lease provisions we can employ to generate data more useful to our efficiency efforts, but in the interim we use Energy Information Administration's (EIA) 2003 Commercial Buildings Energy Consumption Survey (CBECS) and Egrid to determine our indirect energy use.
As part of an integrated strategy to reduce our GHG emissions, 100% of the energy we used in our offices in FY13 came from renewable sources. We purchased renewable energy certificates (RECs) for 110,643 MWh, which lowered our overall CO2 emissions from 243,074 to 190,311. The RECs, from wind energy projects across the country, are certified by Green-e Energy and verified by an independent third party.
Scope 3: Our estimate encompasses the following: