Our Carbon Calculations
|
Desc.
(Units)
|
Quantity
|
Conver-
sion
Factor
KgCO2 /
Unit
|
CO2e (Tonnes)
|
Source
|
Respon-sible
Person
|
|
2008
|
2009
|
2010
|
2011
|
2008
|
2009
|
2010
|
2011
|
| Scope 1 - Direct Emissions |
|
Gas Oil
(Litres)
|
3,254, 268
|
2,535, 083
|
1,374, 923
|
1,632, 811
|
2.762
|
8,988
|
7,002
|
3,798
|
4,510
|
Goods Received
Notes
|
Buying
Dept.
|
|
Natural Gas
(m3)
|
20,256
|
26,994
|
6,163
|
4,667
|
2.009
|
41
|
54
|
12
|
10
|
Meter Readings
Utility Bills (Check)
|
Office Manager
Accounts Dept.
|
|
Diesel - DERV
(Litres)
|
804,944
|
783,876
|
786,730
|
757,006
|
2.639
|
2,124
|
2,069
|
2,076
|
1,998
|
Fuel Cards
Account Data
|
Plant Dept.
Accounts
Dept.
|
|
Petrol
(Litres)
|
47,260
|
82,900
|
96,652
|
92,988
|
2.304
|
109
|
191
|
223
|
214
|
Fuel Cards
Account Data
|
Plant Dept.
Accounts
Dept.
|
| Scope 2 - Indirect Emissions (Electricity & Import) |
|
Electri-city
(kWh)
|
322,859
|
302,232
|
588,488
|
593,095
|
0.541
|
175
|
164
|
318
|
321
|
Meter Readings
Utility Bills (Check)
|
Office Manager
Accounts Dept.
|
| Scope 3 - Other Indirect Emissions |
| Not included at present |
| Total |
11,437
|
9,480
|
6,427
|
7,053
|
|
| Tonnes CO2e per £100,000 turnover |
12.03
|
11.02
|
7.82
|
6.72
|
|
|
Note - 2011 data based on £105m turnover figure
|
|
Findings
-
Gas oil use has increased slightly since 2011 due to increased ground work schemes (This is also reflected in the waste data), although remains much lower than in previous years when we were more active in the landfill sectors.
-
Some fuel data had to be estimated due to problems accessing vehicle fuel card data via Arval. However this data is still accurate, based on financial accounts.
-
Electric consumption at Durham office increased significantly due partly to a 30% increase in personnel and largely due to the use of electric heaters during early 2011 when the gas heating system was awaiting repair (this also showed a significant reduction in gas use at the office).
-
Changes to fleet vehicle choice have resulted in a more petrol engine vehicles, however this has been offset by greater efficiencies brought about by the more stringent emission and efficiency criteria for vehicle selection.
-
Turnover has increased by circa £20m, more than offsetting additional the significant additional gasoil and small increase in electricity use.
|
|
Our full Carbon Emission Data Verification Statement is available here.
|
Our carbon calculation uses the methodology and conversion factors set out by the Carbon Trust.
As well as consumption of gas oil on our construction sites and natural gas to heat our main offices, Scope 1 also measures emissions associated with the petrol and diesel used in our fleet vehicles (cars and vans) as well as any private vehicles used for business.
All employees with a car (or car allowance) have a fuel card for business and private mileage. Strictly, emissions from private mileage should be excluded from our calculation and those from commuting should be included in Scope 3, however we do not have a process in place to separate business, commuting and private miles. We have therefore chosen to include all fuel in Scope 1 of our carbon footprint calculation.
Indirect emissions included in Scope 2 of the carbon calculation represent our electricity consumption. This year we have made significant progress in measuring the waste generated across the Company and therefore hope to be in a position to report on waste related emissions in Scope 3 from next year.
