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††††

 

†††† Greenhouse Gas

Emissions Report

2014 -15

 

 

 

 

 

1.0       Summary

This report has been compiled in response to the request of the Department of Energy and Climate Change (DECC) to publish information about the Greenhouse Gas (GHG) emissions for Maidstone Borough Councilís estate and operations.

The report uses data collated by MBC as part of its Carbon Management Programme, and covers the period of 1st April 2014 to 31st March 2015.

The report includes direct emissions† from gas and fuel consumption in MBC owned and operated buildings and vehicles (classified as Scope 1) indirect emissions from the consumption of purchased electricity (classified as Scope 2) and indirect emissions related to business travel, which are classified as scope 3.

The Council has set itself a target to reduce emissions of CO2 by 20% by 2014/15 from a level of 5840 tonnes CO2 in the baseline year of 2008/09. The data presented in this report show that the level of CO2 emissions in 2014/15 was 4998 tonnes, which is an increase of 207 tonnes on the 2013/14 year. This represents a reduction of 14.9% from the baseline year, with the largest reduction achieved in Scope 1. The reduction in 2013/14 was 18.4%, and therefore, it seemed likely that the overall target of a 20% reduction in CO2 emissions would be met. However, 2014/15 included some anomalous results, particularly, a large increase in electricity consumption at Mote Park Leisure Centre, which meant that the reduction of 18.4% achieved in 2013/14 has been reduced.

The cumulative total amount of CO2 emissions saved since the baseline year is now 4081 tonnes.

The Carbon Management Plan sets a target for the cumulative total saving of 5295 tonnes, however this figure assumes that emissions would increase if nothing were done, based on an assumed 0.7% annual increase in demand. If this assumption is factored into the actual savings, the cumulative reduction in CO2 since 2008/09 would be 5056 tonnes, compared to the target of 5295 tonnes.

 

 

 

 

 

 

 

 

 

2.0       †Greenhouse Gas Emissions from our Estate and Operations

 

 

Scope1, Scope 2 and significant Scope 3 emissions have been measured.

Scope 1 includes all natural gas use by Council owned buildings and those operated by the Council. It also includes all emissions from owned or controlled vehicles including the Waste Collection Service and Park and Ride Service.

 

Scope 2 includes the consumption of all purchased electricity associated with Council operations.

 

Scope 3 includes all emissions associated with water supply, the transportation of purchased fuels (the Scope 3 emissions associated with Scope 1 emissions), employee business travel by non-owned means, electricity related activities (the Scope 3 emissions associated with the Scope 2 emissions) and the Scope 3 emissions associated with the Biomass Boiler.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.1       GHG Emissions Summary

 

Table 1 shows a summary of the Greenhouse Gas emissions for the estate and operations of Maidstone Borough Council for the reporting period 1st April 2014 to 31st March 2015.

 

 

Table 1: Greenhouse Gas Emissions Data for the period 1st April 2014 to 31st March 2015

Maidstone Borough Council Ė Carbon Emissions

GHG Emissions for 1st April 2014 to 31st March 2015

 

Tonnes CO2e

 

2014/15

 

% Change from Baseline

2013/14

 

2012/13

2011/12

2010/11

2009/10

2008/09

Baseline Year

Scope 1

2611

24.6

2776

2923

2747

3290

2867

3463

Scope 2

1738

+3.2

1372

1556

1694

1690

1703

1682

Scope 3

649

10.9

643

657

653

715

675

728

 

Outside of Scope (not included in gross emissions)

107

 

107

314

99

34

9

7

 

Total Gross Emissions

4998

14.9

4791

5136

5094

5695

5245

5872

 

Carbon Offset /Green Tariff

0

 

 

0

0

0

0

0

 

Total Net Emissions

4998

14.9

4791

5136

5094

5695

5245

5872

 

Intensity Measure (Tonnes of CO2e per employee)

10.3

 

9.6

10.4

10.1

10.5

9.1

10.1

 

 

 

 

 

 

 

2.2       ††Changes in Emissions

 

MBCís net Total GHG emissions in 2014/15 were 4998 tonnes CO2e which represents an increase of 4.3% on 2013/14 and a 14.9% reduction on the 2008/09 baseline year. This is an increase on the 18.4% reduction achieved in 2013/14, which was mainly caused by a large increase in electricity consumption at Mote Park Leisure Centre, which was due to the CHP plant being out of action for several months.

 

Figure 1.† Reduction in Actual CO2e Emissions, Compared to Target

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


2.2.1  Greenhouse Gas Reduction Activities

Maidstone Borough Councilís Greenhouse Gas reduction activities have been undertaken in accordance with MBCís Carbon Management Plan produced in 2009.† The stated aim of the Carbon Management Plan was to reduce MBCís carbon footprint by 3% per year, and to achieve a 20% reduction on the 2008/09 baseline year by 2015.† The plan contained 44 actions or projects aimed at reducing CO2 emissions, most of which were intended to be carried out in the short to medium term, with the remainder being more aspirational or speculative.†

The majority of the actions have been completed, and of those which have not been completed, most have been investigated and found not to be presently cost-effective, or otherwise not viable for some reason.† Some of these may be revisited in the future.

Some of the most significant actions included demolition of the King Street Multi Storey Car Park and renewal of the waste collection contract to a new service using split bodied vehicles. There has also been an ongoing programme of improvements at the Mote Park Leisure Centre, which has included:-

 

           A quarterly review of the strategy programming on all environmental controls of the Building Management System in order to optimise consumption.

 

           Staff training on programming of variable speed drives for Air Handling Units (AHUs) and a review of each unitís programme with a view to reducing electrical consumption without compromising quality of service.

 

           AHU3 (Leisure Pool) upgraded controls from a standalone unit and integrated into the Building Energy Management System giving a more cohesive approach to balancing air movement plant and reducing waste.

 

           Installation of pool covers over main fitness pool and 2x Teaching pools.

 

           Installation of LED lighting through large majority of the centre.

 

2.2.2  Weather corrections

 

One of the major reasons for the change in emission totals year on year is the weather.† If the weather is especially cold, more heating will be required, which can mask the effect of the improvements which would have been achieved.

A correction can be applied which makes possible better comparisons between periods of different temperature. The correction uses the concept of heating degree days.

The concept of degree days is based on the assumption that when the temperature reaches 15.5˚C, a building will not require any supplementary heating.† If the temperature falls to 14.5 ˚C on a given day, there is one degree day for that day.† If the temperature falls to 13.5 ˚C for a day, then there are two degree days for that day.† If the temperature remains at 13.5 ˚C for a week, then there are 14 degree days for that week.† For a given year, the number of degree days can be compared with a reference period, usually a long term average, and a correction factor can be calculated as

Weather correction factor = degree days (reference period)/degree days (reporting period)

Table 2 below shows the number of degree days each year from the baseline year to 2014-15.†

It can be seen that the number of degree days in 2014/15 was 1781, and the twenty year average was 2048.† The number of degree days in 2013/14 was 1873.† Therefore, 2014/15 was milder than average, and slightly milder than the previous year, which was also milder than average.† Using the twenty year average as the reference period, the weather correction factor for 2014/15 would be calculated by

Weather correction factor = 2048/1781† = 1.150

Table 2 shows the weather correction factors for all years from 2008-09 to 2014-15

Table 2 Number of Degree Days and Weather Correction Factors for 2008/09† to 2014/15

Year

Degree Days

Twenty Year Average

Weather Correction Factor

2008/09

2130

2048

0.962

2009/10

2206

2048

0.928

2010/11

2414

2048

0.848

2011/12

1751

2048

1.167

2012/13

2329

2048

0.879

2013/14

1873

2048

1.093

2014/15

1781

2048

1.150

 

 

Figure 2, Reduction in Weather Corrected CO2 Emissions Compared to Target

 

 

 

 

 

 

 

2.3       ††Future Greenhouse Gas Reduction Activities

The majority of actions in the Carbon Management Plan have been completed, and the Plan is due for renewal in 2015.† At present, a The Council is drafting a Low Emission Strategy aimed primarily at tackling air quality issues within the Borough, however, it is proposed that this will also be the vehicle for managing GHG emissions in future. Thus a new Carbon Management Plan will be developed in 2015 as part of the new Low Emission Strategy.

In support of this new Plan the Council will embark on a series of projects to install renewable energy technology on various buildings within its estate.  The Council will also bring forward a policy which enables tenants on its estate, and residents and businesses within the wider borough to take up the environmental and financial benefits of this technology.

The execution of these projects will realise savings for the Council and they will therefore be funded from the allocation for commercial projects within the capital programme.  The projects currently completed or approved within this financial year are predicted to reduce carbon emissions >90 tonnes and generate savings >£28,000.  Future projects on the Councils estate will be assessed on a case-by-case basis and will be subject to approval by the Policy and Resources Committee.

 

Table 3: Proposed Renewable Energy Projects

Site

Array size

Annual CO2 emission reduction

MBC Depot

50kw

21.5 tonnes

Lockmeadow Market

50kw

21.5 tonnes

Vinterís Park Crematorium

14kw

4kw

6 tonnes

1.7 tonnes

Magnolia House

24kw

10.3 tonnes

 

 

 

 

 

 

3.0       Statement of Greenhouse Gas Emissions 2014-15

 

 

Tonnes CO2e

Tonnes CO2e

(weather corrected)

Scope 1

Gas Consumption

1006

1157

 

Transport

1605

1845

Total Scope1

 

2611

3003

 

 

Scope 2

Purchased Electricity

1738

1500

Total Scope 2

 

1738

1500

 

 

 

 

Scope 3

Water

14.5

13

 

Business Mileage

79.3

78.4

 

Transportation of Purchased Fuels

437.8

482.8

 

Extraction, Production and Transportation

117.3

128.2

Total Scope 3

 

649

702.4

Grand Total

 

4998

5236.4

 


 

Appendix 1: Explanatory notes

1: Greenhouse Gases.

Greenhouse gas (GHG) emissions are reported in tonnes of carbon dioxide equivalent (CO2e).† All of the greenhouse gases covered by the Kyoto Protocol are included, namely carbon dioxide (CO2), methane CH4, nitrous oxide (N2O) perfluorocarbons (PFCs) hydrofluorocarbons (HFCs), and sulphur hexafluoride (SF6)

Different gases have different abilities to trap heat in the atmosphere, otherwise known as their global warming potential. In order to present greenhouse gas emissions as a simple single number, the global warming potentials of the other gases are used to calculate the mass of CO2 which would trap the same amount of heat, which is known as its CO2 equivalent (CO2e).

The CO2 equivalents for all the gases are totalled up to give a single CO2 equivalent.† The most significant gases in the Councilís operations are carbon dioxide, methane and nitrous oxides from the burning of fossil fuels.

2: Classifying Greenhouse Gas Emissions

Scope 1 (Direct emissions)

Activities owned or controlled by the council that release emissions straight into the atmosphere (e.g. combustion in owned or controlled boilers and vehicles).

Scope 2 (Energy indirect)

Emissions being released into the atmosphere associated with the consumption of purchased electricity. These are indirect emissions that are a consequence of the councilís activities but which occur at sources we do not own or control.

Scope 3 (Other indirect)

Emissions that are a consequence of the councilís actions, which occur at sources we do not own or control and which are not classed as scope 2 emissions (e.g. business travel in vehicles not owned or controlled by the council). Transmission and distribution losses associated with purchased electricity are also included under this scope.

3: Inclusions

Direct GHG emissions and indirect GHG emissions (from electricity consumption) have been reported from council-owned buildings and vehicles. This includes council-owned buildings that are leased to other organisations or are under the operational control of outsourced services (e.g. leisure centres).

 

Scope 3 emissions currently include business travel by private car and rail travel.

4: Current exclusions

Emissions from the following sources have not been reported:

  • Fugitive emissions (e.g. air conditioning and refrigeration leaks) (Scope 1)
  • Waste disposal (Scope 3)

 

Appropriate data is not currently available for the above emissions sources. Emissions from air conditioning and refrigeration units in office buildings were excluded due to the cost of data collection. These are not considered to be material as they will account for less than 0.5% of total scope 1 and 2 emissions.† Work is ongoing to include business travel by all modes, waste disposal and employee commuting in future reporting, the latter represents a significant source of scope 3 emissions.

5: Conversion Factors

The greenhouse gas emissions associated with stationary and transport sources are then calculated by converting this activity data using documented conversion factors.

Text Box: Activity data (e.g. total kWh) x Emission factor = GHG emissions

 

The conversion factors that relate to ĎTotal kg CO2eí are those used to calculate greenhouse gas emissions for this report.

6: Baseline Year

Greenhouse gases have been reported with reference to a baseline year, which makes it easier to compare emissions over time. The baseline year is 2008/09 which is consistent with the Carbon Management Plan To track performance over time the base year emissions may need to be recalculated to enable a meaningful comparison of current and historic emissions.† The baseline emissions will be recalculated as new (additional) datasets become available for the base year, where there is a discovery of significant or collectively significant errors, or as required by updates to emissions factors.