Tokyogasgroup csr report

CSR Data

Environmental Data

Tokyo Gas Group Business Activities and Material Balance

We monitor and manage impacts on the environment at every stage of our LNG value chain in order to reduce the impact on the environment.

Tokyo Gas Group Business Activities and Material Balance (FY2016)
Tokyo Gas Group Business Activities and Material Balance (FY2016)
Companies included in the data:   Tokyo Gas and its 46 consolidated subsidiaries in Japan.(PDF : 59KBpdf
*1 For city gas production by the Tokyo Gas Group.
*2 Energy usage by the Tokyo Gas Group excluding double-counting due to intra-group supply of heat and electricity.
*3 City gas : Volume of gas sales by the Tokyo Gas Group excluding supply to other gas utilities.
Wholesale supply : Volume of gas supplied to other gas utilities. 
Heat: Includes sales from LNG terminals as well as district heating and cooling center and spot heat supply. Includes intra-group supply. 
Electric power: Volume of sales of all electric power, including power purchased for business use from other companies and the market as well as Group power stations.
*4 CO
2, CH4, NOx: Excludes double-counting due to intra-group supply. 
Volume of wastewater: Specified wastewater and domestic sewage.
*5, 6 PE pipes, Steel and cast-iron pipes: Tokyo Gas on a non-consolidated basis.
*7 Gas sales volume according to consolidated financial statements multiplied by emission intensity.

 
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Environmental Performance Data (1) Usage of Energy & Water / Emissions into the Atmosphere & Water System

Usage of Energy & Water / Emissions into the Atmosphere & Water Systems
Feedstock and Production
Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
City gas feedstock (Note 1) Feedstock LNG thousand tons 10,760 11,057 11,513 11,411 11,583
Feedstock LPG thousand tons 368 418 441 438 434
Production City gas sales
(Note 2)
million m3 14,211 14,527 15,358 15,263 15,571
Heat sales 
(Note 3)
TJ 3,282 3,353 3,287 3,251 3,451
Power sales 
(Note 4)
billion kWh 9.98 9.71 10.61 10.96 12.65
 
City Gas Feedstock(LNG/LPG)
City Gas Feedstock(LNG/LPG)
City Gas Sales
City Gas Sales
 
Heat Sales
Heat Sales
Power Sales
Power Sales

Note 1:For city gas production by Tokyo Gas Group.
Note 2:Volume of gas sales by Tokyo Gas Group including supply to other gas utilities.
Note 3:Includes sales volume from LNG terminals, in addition to district heating and cooling center and spot heat supply. Also includes intra-group supply.
Note 4:Volume of sales of all electric power, including power purchased for business use from other companies and the market as well as Group power stations.


Energy Usage*1,2

Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
Energy usage(Note 1) TJ 62,565 60,457 66,399 68,561 79,230
  LNG terminals TJ 3,818 3,894 4,069 3,998 4,169
District heating and cooling centers TJ 4,513 4,361 4,167 4,167 4,316
Power plants TJ 51,745 49,733 55,639 57,871 68,250
Tokyo Gas business offices, etc. TJ 1,469 1,453 1,417 1,387 1,483
Other group companies TJ 1,536 1,541 1,490 1,460 1,362
(Tokyo Gas non-consolidated) TJ 5,586 5,638 5,785 5,678 5,954
Electric power (Note 2) MWh 542,724 545,218 593,097 615,419 626,729
  LNG terminals MWh 298,742 304,788 334,229 345,227 363,053
District heating and cooling centers MWh 76,975 76,446 90,973 94,640 98,529
Power plants MWh 13,263 10,732 8,774 11,407 9,775
Tokyo Gas business offices, etc. MWh 55,022 54,499 52,350 52,372 51,526
Other group companies MWh 118,785 118,673 115,677 112,890 103,847
(Tokyo Gas non-consolidated) MWh 359,707 364,971 391,536 402,357 419,502
City gas thousand m3 1,324,428 1,275,444 1,402,022 1,447,012 1,691,380
  LNG terminals thousand m3 20,978 21,378 18,769 14,600 14,544
District heating and cooling centers thousand m3 85,647 82,570 74,482 73,328 75,133
Power plants thousand m3 1,198,427 1,152,267 1,289,852 1,341,099 1,582,434
Tokyo Gas business offices, etc. thousand m3 17,149 16,900 16,726 15,969 18,209
Other group companies thousand m3 2,228 2,328 2,192 2,015 1,066
(Tokyo Gas non-consolidated) thousand m3 43,542 43,837 40,994 35,990 38,347
Heat (Note 2) TJ 24 31 38 48 71
  District heating and cooling centers TJ 104 176 203 198 232
Tokyo Gas business offices, etc. TJ 88 89 85 88 93
Other group companies TJ 165 167 158 166 195
(Tokyo Gas non-consolidated) TJ 102 99 94 96 102
Other fuels TJ 4.62 5.40 5.23 5.80 4.89
  LNG terminals TJ 0.18 0.18 0.22 0.68 0.50
Tokyo Gas business offices, etc. TJ 0.29 0.64 0.64 0.60 1.34
Other group companies TJ 4.15 4.59 4.37 4.52 3.04
(Tokyo Gas non-consolidated) TJ 0.81 0.85 0.86 1.28 1.84
Fuel for vehicles Gasoline kL 3,634 3,571 3,282 3,219 3,342
(Tokyo Gas non-consolidated) kL 1,494 1,461 1,425 1,444 1,420
Diesel oil kL 243 228 219 208 198
(Tokyo Gas non-consolidated) kL 36 37 35 41 47
City gas thousand m3 237 218 203 175 135
(Tokyo Gas non-consolidated) thousand m3 201 185 172 142 124
LPG kL 274 295 280 220 142
(Tokyo Gas non-consolidated) kL
LNG cryogenic energy thousand tons 2,487 2,659 2,289 2,364 2,678
  Cryogenic power generation thousand tons 696 796 460 724 785
Portion sent to subsidiaries and affiliates thousand tons 818 821 853 852 820
BOG treatment, etc. thousand tons 973 1,042 976 788 1,073
 
Energy Usage (by Fuel Type)
Energy Usage (by Fuel Type)
Energy Usage (by Business)
Energy Usage (by Business)

Note 1:Excludes double counting by intra-group supply of heat and electricity.
Note 2:Excludes double counting by intra-group supply.

Water Usage
Category Category FY2012 FY2013 FY2014 FY2015 FY2016
Tap water and industrial water thousand m3 5,647 6,023 5,751 5,388 5,017
  LNG terminals thousand m3 1,460 1,542 1,662 1,457 1,138
District heating and cooling centers thousand m3 1,711 1,597 1,439 1,459 1,552
Power plants thousand m3 1,504 1,890 1,703 1,569 1,492
Tokyo Gas business offices, etc. thousand m3 595 607 572 537 544
Other group companies thousand m3 376 387 375 366 290
(Tokyo Gas non-consolidated) thousand m3 2,111 2,192 2,276 2,036 1,726
Seawater LNG terminals thousand m3 791,092 795,227 784,406 773,963 781,879
 
Water Usage (tap Water and Industrial Water)
Water Usage (tap Water and Industrial Water)


Emissions into the Atmosphere
Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
Greenhouse gas CO2 
*1,2 (Note 1)
thousand tons of CO2 3,154 3,074 3,376 3,479 4,014
  LNG terminals 
(Note 2)
thousand tons of CO2 180 200 210 202 206
District heating and cooling centers 
(Note 3)
thousand tons of CO2 225 223 213 211 217
Power plants
(Note 4)
thousand tons of CO2 2,627 2,522 2,823 2,938 3,466
Tokyo Gas business offices, etc.  (Note 5) thousand tons of CO2 72 75 73 71 74
Other group companies (Note 6) thousand tons of CO2 76 81 77 75 69
(Tokyo Gas non-consolidated)
(Note 7)
thousand tons of CO2 268 290 298 288 296
CH4 
*3 (Note 8)
thousand tons of CO2equivalent 3 4 6 14 5
NOx tons 264 272 272 302 367
  LNG terminals
(Note 9)
tons 12 14 14 11 13
District heating and cooling centers tons 62 59 53 52 51
Power plants tons 175 182 187 223 282
Tokyo Gas business offices, etc. (Note 9) tons 16 17 18 15 21
(Tokyo Gas non-consolidated) tons 29 32 32 28 35
 
Greenhouse Gas Emissions (CO2 equivalent)(SCOPE1 + SCOPE2)
Greenhouse Gas Emissions (CO2 equivalent)(SCOPE1 + SCOPE2)

Note 1:Excludes double counting by intra-group supply. Totaling 4,014 thousand tons (based on adjusted emission factors) for the Tokyo Gas Group overall.
Note 2:206 (based on adjusted emission factors)
Note 3:217 (based on adjusted emission factors)
Note 4:3,466 (based on adjusted emission factors)
Note 5:75 (based on adjusted emission factors)
Note 6:69 (based on adjusted emission factors)
Note 7:296 (based on adjusted emission factors)
Note 8:About 215 tons of CH
4 emissions
Note 9:Emissions from facilities that generate soot and smoke specified in the Air Pollution Control Act.

 


Greenhouse Gas Emissions from Feedstock Procurement (SCOPE3)
Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
LNG procured million tons 12.71 12.80 13.97 13.87 14.25
Greenhouse gas (CO2equivalent)
(Note)
Extraction million tons of CO2 0.56 0.57 0.62 0.58 0.60
Liquefaction million tons of CO2 5.80 5.84 6.38 5.08 5.22
Marine transport million tons of CO2 1.37 1.38 1.50 1.12 1.15
Note:Calculated based on greenhouse gas emission intensity throughout the lifecycle, from extraction of natural gas to processing and transportation, as analyzed by the LCA approach.
 
  • FY2012-14 emission intensity
    Extraction: 0.81 / Liquefaction: 8.36 / Transportation by sea: 1.97 g-CO
    2/MJ, based on gross heating value 
    Source: "Future Forecast for Life Cycle Greenhouse Gas Emissions of LNG and City Gas Type 13A" 
    (Energy and Resources, Volume 28, No. 2, March 2007).
  • Emission intensity from FY2015
    Extraction: 0.77 / Liquefaction: 6.71 / Transportation by sea: 1.48 g-CO
    2/MJ, based on gross heating value 
    Source: "Study of Life Cycle Greenhouse Gas Emissions of LNG and City Gas 13A" (35th Annual Meeting of the Japan Society of Energy and Resources, June 2016).

CO2 Emissions and Emissions Reduction at Customers'Sites(SCOPE3)
Category Unit FY2011 FY2012 FY2013 FY2014 FY2015 FY2016
CO2 Total amount million tons of CO2 26.94 27.09 27.67 29.36 28.96 29.43
Amount of reduction 
relative to FY2011
million tons of CO2 Base 0.87 1.52 3.29 3.43 3.94

Energy Usage and CO2 Emissions Associated with Cargo Transportation (for Tokyo Gas on a Non-Consolidated Basis) (SCOPE3)
Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
Transportation amount million tons-km 81.32 93.12 94.59 98.42 85.70
Energy usage (crude oil equivalent) kL 3,109 3,258 3,275 3,354 3,165
Energy usage intensity kL/million tons-km 38.2 35.0 34.6 34.1 36.9
CO2 emissions tons-CO2 8,181 8,576 8,615 8,810 8,267

Emissions into Water Systems
Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
Wastewater thousand m3 1,154 1,106 1,116 1,091 1,090
  LNG terminals 
(Note)
thousand m3 274 242 265 287 291
District heating and cooling centers thousand m3 398 321 325 330 354
Power plants thousand m3 483 544 525 474 445
(Tokyo Gas non-consolidated) thousand m3 284 249 273 296 300
COD tons 1.7 1.9 1.9 1.6 1.4
  LNG terminals tons 1.4 1.2 1.2 1.2 1.0
Power plants tons 0.3 0.6 0.6 0.5 0.4
(Tokyo Gas non-consolidated) tons 1.4 1.2 1.2 1.2 1.0
 
Wastewater
Wastewater
COD (Chemical Oxygen Demand)
COD (Chemical Oxygen Demand)
Note:Data is for wastewater discharges from wastewater treatment facilities and sewage discharges.



Conversion Factor, etc.

CO2 Emission Factor
Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
City gas (Tokyo Gas 13A) 
(Note 1)
kg-CO2/m3 2.21
Purchased electricity (average of all power sources)
(Note 2)
kg-CO2/kWh 0.464 
etc.
0.525 
etc.
0.530
etc.
0.505 
etc.
0.500
etc.
Heat 
(Note 3)
Steam (excluding industrial use), hot water, cold water kg-CO2/MJ 0.057
Industrial steam kg-CO2/MJ 0.060
Other fuels
(Note 3)
Heavy oil A kg-CO2/L 2.71
Diesel kg-CO2/L 2.58
Kerosene kg-CO2/L 2.49
Gasoline kg-CO2/L 2.32
LPG kg-CO2/kg 3.00
Note 1:Calculated based on the typical composition of city gas (type 13A) supplied by Tokyo Gas (15°C, gauge pressure of 2 kPa).
Note 2:Emission factors from electric power companies, released in accordance with the ministerial ordinance stipulated by the Act on Promotion of Global Warming Countermeasures.
Note 3:Calculated using the unit calorific value released in accordance with the ministerial ordinance stipulated by the Act on Promotion of Global Warming Countermeasures, and multiplying this amount by the emission factor per unit calorific value and by 44/12.



Unit Calorific Value
Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
City gas (Tokyo Gas 13A) 
(Note 1)
MJ/m3N 45.00
Purchased electricity 
(Note 2)
*4
Daytime electricity MJ/kWh 9.97
Daytime electricity MJ/kWh 9.28
Other than general electricity utilities MJ/kWh 9.76
Heat 
(Note 2)
Steam (excluding industrial use), hot water, cold water MJ/MJ 1.36
Industrial steam MJ/MJ 1.02
Other fuels
(Note 2)
Heavy oil A MJ/L 39.1
Diesel MJ/L 37.7
Kerosene MJ/L 36.7
Gasoline MJ/L 34.6
LPG MJ/kg 50.8
Crude oil equivalent coefficient  (Note 2) kL/GJ 0.0258

Note 1:City gas calorific value of Tokyo Gas (0°C, 1 atmospheric pressure)
Note 2:Act Concerning the Rational Use of Energy (the Energy Efficiency Act)

*1 For district heating and cooling centers that sell power using Combined Heat and Power (cogeneration), the amount of energy usage is divided between those for heat production and those for power generation using the allocation factor calculated based on the Act on Promotion of Global Warming Countermeasures. Data for energy used to produce heat is reflected in "District heating and cooling centers," and data for energy used for power generation is reflected in "Power plants." Data for "Tokyo Gas business offices, etc." does not include energy used for LNG terminals and district heating and cooling centers. "Other group companies" refers to data on group companies excluding district heating and cooling centers, and power plants.
*2 Some variance in the data listed under different categories may exist since the data has been processed to properly assess the changes in energy usage intensity for each business activity (such as by reflecting the amounts commissioned by other companies at LNG terminals).
*3 CH
4 (methane) emissions were converted to CO2 emissions by multiplying by the global warming potential of 25, as stipulated in the Act on Promotion of Global Warming Countermeasures.
*4 For the crude oil equivalent of electricity usage under "District heating and cooling centers" and "Tokyo Gas business offices, etc.," the amounts purchased from power utility companies were all calculated using daytime electricity factors.
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Environmental Performance Data (2) Waste

Industrial Waste

Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
Industrial waste
*1,2
Generation tons 117,832 122,705 130,193 149,317 144,230
Amount recycled tons 114,994 119,039 124,975 142,629 140,373
Final disposal tons 1,956 2,450 3,714 2,433 1,312
Recycling rate 98 97 96 96 97
Final disposal rate 2 2 3 2 1
  Production plants 
(group)
*1
Generation tons 1,254 1,476 1,330 1,291 809
Amount recycled tons 1,089 1,062 925 851 476
Final disposal tons 0 2 16 18 2
Recycling rate 87 72 70 66 59
Final disposal rate 0 0 1 1 0
Construction work
*1,2
Generation tons 113,451 118,111 125,816 144,594 139,856
Amount recycled tons 111,160 115,303 121,455 138,851 136,807
Final disposal tons 1,820 2,258 3,472 2,221 1,123
Recycling rate 98 98 97 96 98
Final disposal rate 2 2 3 2 1
Business offices, etc. 
*1
Generation tons 3,128 3,118 3,046 3,431 3,565
Amount recycled tons 2,746 2,674 2,595 2,926 3,090
Final disposal tons 136 190 226 194 187
Recycling rate 88 86 85 85 87
Final disposal rate 4 6 7 6 5
Tokyo Gas non-consolidated Generation tons 3,903 4,137 4,430 4,462 4,449
Amount recycled tons 3,531 3,647 3,719 3,629 3,701
Final disposal tons 117 194 360 431 389
Recycling rate 90 88 84 81 83
Final disposal rate 3 5 8 10 9
 
Industrial waste (ALL)
Industrial waste (ALL)
Industrial waste (Production Plants)
Industrial waste (Production Plants)
Industrial waste (Construction Work)
Industrial waste (Construction Work)
Industrial waste (Business Offices, etc.)
Industrial waste (Business Offices, etc.)

Results by Major Sites(FY2016)


LNG terminals (Negishi, Sodegaura, Ohgishima, Hitachi)
Category Generation 
(tons)
Amount recycled 
(tons)
Final disposal 
(tons)
Recycling rate 
(%)
Final disposal rate
(%)
Sludge 66.1 11.7 0.1 17.7 0.1
Scrap metal 14.1 14.1 0.0 100.0 0.0
Waste oil 5.7 5.5 0.0 96.7 0.1
Waste plastics 7.5 6.5 0.0 87.4 0.4
Specially-controlled industrial waste 92.4 37.4 0.4 40.5 0.4
Other 6.7 3.6 0.1 53.8 0.9
Total 192.4 78.9 0.5 41.0 0.3

District Heating and Cooling Centers
Category Generation 
(tons)
Amount recycled 
(tons)
Final disposal 
(tons)
Recycling rate 
(%)
Final disposal rate
(%)
Sludge 16.0 14.0 0.0 87.7 0.0
Scrap metal 74.0 74.0 0.0 99.9 0.0
Waste oil 10.5 9.5 0.0 90.0 0.1
Waste plastics 11.8 11.7 0.0 99.2 0.0
Other 11.8 11.0 0.0 93.3 0.0
Total 124.2 120.2 0.0 96.8 0.0

Waste from Construction Work *2
Category Generation 
(tons)
Amount recycled 
(tons)
Final disposal 
(tons)
Recycling rate 
(%)
Final disposal rate
(%)
Debris 127,730 127,517 212 99.8 0.2
Sludge 3,831 2,152 184 56.2 4.8
Scrap metal 2,281 2,269 3 99.5 0.1
Wood chips 833 811 20 97.3 2.4
Waste plastics 1,248 1,021 194 81.8 15.5
Glass, concrete, ceramic waste 2,138 1,740 391 81.4 18.3
Paper waste 244 230 5 94.2 1.9
Other 1,551 1,069 114 68.9 7.4
Total 139,856 136,807 1,123 97.8 0.8

Business Offices, etc. *1
Category Generation 
(tons)
Amount recycled 
(tons)
Final disposal 
(tons)
Recycling rate 
(%)
Final disposal rate
(%)
Scrap metal 1,104 1,096 7 99.2 0.7
Waste plastics 948 874 69 92.2 7.2
Waste oil 364 361 1 99.0 0.2
Sludge 383 108 46 28.2 12.1
Glass, concrete, ceramic waste 115 98 17 85.3 14.7
Debris 118 110 8 93.3 6.4
Other 533 443 40 83.1 7.4
Total 3,565 3,090 187 86.7 5.2

*1 Data for "Production plants" includes that from business offices that produce city gas and other products, district heating and cooling centers, and power plants. Data for "Construction work" is for construction taken on by group companies as original contractors. Data for "Business offices, etc." includes all data other than that from "Production plants" and "Construction work."
*2 ncluding construction work for customers of our subsidiaries and affiliates.



General Waste

Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
General Waste   Generation tons 3,407 3,645 3,457 3,143 2,931
Amount recycled tons 2,489 2,755 2,725 2,441 2,224
Recycling rate 73 76 79 78 76
Tokyo Gas non-consolidated Generation tons 1,213 1,154 1,132 1,016 1,045
Amount recycled tons 1,020 977 967 870 850
Recycling rate 84 85 85 86 81
  Paper waste   Generation tons 2,199 2,329 2,299 2,056 1,833
Amount recycled tons 2,060 2,220 2,194 1,934 1,720
Recycling rate 94 95 95 94 94
Tokyo Gas non-consolidated Generation tons 920 863 882 783 775
Amount recycled tons 876 821 830 738 721
Recycling rate 95 95 94 94 93
 
General Waste (All)
General Waste (All)
General Waste (Paper)
General Waste (Paper)


 

By-Products from Gas Pipe Construction Work

Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
Gas pipe
(Note1)
PE pipe Amount recovered tons 250 231 228 235 260
Amount recycled tons 250 231 228 235 260
Recycling rate 100 100 100 100 100
Steel and cast-iron pipe Amount recovered and recycled tons 3,711 3,995 4,670 5,003 6,126
Recycling rate 100 100 100 100 100
Excavated soil 
(Note2)
Pipe extension work km 1,183 1,160 1,170 1,121 1,026
Estimated excavated amount million tons 3.59 3.57 3.71 4.49 3.88
Actual reduced amount Reduction (by shallower-laying of pipes in narrow trenches and non-open-cut method) million tons 1.40 1.43 1.42 1.32 1.35
Reuse (generated soil) million tons 0.47 0.49 0.52 0.84 0.62
Recycle (improved soil, regeneration treatment) million tons 1.10 1.10 1.15 1.33 1.27
Total reduction amount million tons 2.98 3.02 3.09 3.49 3.24
Rate of reduction amount (comparison to estimated excavated amount) 83 84 83 78 83
Residual soil (actual amount) million tons 0.61 0.55 0.62 1.00 0.64
Rate of residual soil (comparison to estimated excavated amount) 17 16 17 22 17
Tokyo Gas non-consolidated
(Note2)
Pipe extension work km 1,064 1,064 1,065 1,020 973
Estimated excavated amount million tons 3.32 3.33 3.47 4.25 3.75
Actual reduced amount Reduction (by shallower-laying of pipes in narrow trenches and non-open-cut method) million tons 1.34 1.36 1.35 1.25 1.31
Reuse (generated soil) million tons 0.41 0.45 0.47 0.79 0.61
Recycle (improved soil, regeneration treatment) million tons 1.08 1.07 1.12 1.31 1.26
Total reduction amount million tons 2.83 2.89 2.94 3.35 3.18
Rate of reduction amount (comparison to estimated excavated amount) 85 87 85 79 85
Residual soil (actual amount) million tons 0.49 0.45 0.52 0.90 0.57
Rate of residual soil (comparison to estimated excavated amount) 15 13 15 21 15
 
PE Pipe
PE Pipe
Steel and Cast-Iron Pipe
Steel and Cast-Iron Pipe
Residual Soil and Reduction Amount
Residual Soil and Reduction Amount



Note1: Tokyo Gas non-consolidated
Note2: Data for excavated soil and asphalt concrete. Includes related city gas companies.


Recovery from Our Customers

Category Unit FY2012 FY2013 FY2014 FY2015 FY2016
Waste, etc. Subject to Home Appliance Recycling Law Home air-conditioning units Units recovered units 20,045 22,009 15,901 14,863 13,309
Units sent to processing plants units 20,041 21,892 16,061 14,862 13,338
Units disposed of by remerchandising, etc. units 19,764 19,962 17,882 14,824 12,828
Weight disposed of by remerchandising, etc tons 829 836 748 615 528
Remerchandised weight tons 732 740 670 559 478
Remerchandising rate 88 88 89 90 90
Fluorocarbons Recovered weight kg 12,718 13,036 10,837 9,646 8,523
Clothes dryers Units recovered units 5,604 6,873 6,193 6,710 6,896
Units sent to processing plants units 5,607 6,820 6,259 6,707 6,879
Units disposed of by remerchandising, etc. units 5,390 6,671 6,573 6,649 6,893
Weight disposed of by remerchandising, etc. tons 193 247 249 258 274
Remerchandised weight tons 158 209 211 228 241
Remerchandising rate 81 84 85 88 87
SRIMS recovery amount 
(Note)
Used gas appliances, etc. tons 4,423 4,345 3,933 3,861 3,715
Other tons 3,804 4,343 5,057 5,075 4,581
Total tons 8,227 8,687 8,991 8,936 8,296

Note: Excludes waste from specified kinds of home appliances.


 

SRIMS Recovery Results(FY2016)

Category Recovery 
(tons)
Amount recycled 
(tons)
Final disposal 
(tons)
Recycling rate 
(%)
Final disposal rate
(%)
Used gas appliances and scrap metal 3,714.8 3,714.8 0.0 100.0 0.0
Waste plastics 543.4 528.0 15.4 97.2 2.8
  Polystyrene foam 14.1 14.1 0.0 100.0 0.0
Cardboard boxes 636.2 636.2 0.0 100.0 0.0
Debris 347.9 312.8 35.1 89.9 10.1
Concrete and tile scraps 288.0 189.2 98.8 65.7 34.3
Other 2,765.6 2,501.9 263.7 90.5 9.5
Total 8,295.9 7,882.8 413.0 95.0 5.0
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Environmental Accounting

Our environmental protection costs in fiscal 2016 totaled 7.39 billion yen, an increase of 1.61 billion yen from the previous fiscal year.
Investments totaled 2.75 billion yen, up 1.88 billion yen from the previous year due mainly to investment in plant and machinery at Toyosu Smart Energy Center.
Expenses totaled 4.64 billion yen, a decrease of 0.27 billion yen from the previous fiscal year.
The economic effect totaled 12.48 billion yen, a decrease of 0.64 billion yen from the previous fiscal year attributable mainly to decreased cost savings resulting from a reduction in excavated soil.


Environmental Accounting of Tokyo Gas Co., Ltd. on a Non-Consolidated Basis (FY2016 Results)
Period: April 2016 to March 2017
Boundary: Tokyo Gas Co., Ltd.
Standard of reference: "Environmental Accounting Guidelines 2005" issued by Japan's Ministry of the Environment, and "Manual for the Introduction of Environmental Accounting in City Gas Business" prepared by the Japan Gas Association

 

Environmental Protection Costs

(Unit: million yen)
  Categories of Environmental Protection Costs Investment Expenses Difference
Major items (examples) FY2015  FY2016 FY2015  FY2016 Investment Expenses
Company business Pollution prevention Capital investment, maintenance expenses, depreciation costs, personnel expenses, etc. for prevention of air pollution, water pollution, noise pollution, etc. 166 515 308 380 349 72
Global environmental protection Capital investment, maintenance expenses, depreciation costs, personnel expenses, etc. for energy conservation, effective use of energy, protection of the ozone layer, etc. 197 1,653 515 674 1,456 159
Resource recycling Capital investment, maintenance expenses, depreciation costs, personnel expenses, etc. for reduction/recycling of excavated soil, waste control, etc. 11 8 787 454 -3 -333
Environmental management Costs for green purchasing, environmental education, development and operation of the Environmental Management System, environmental organizations, etc. 6 0 322 313 -6 -9
Other Costs associated with greenification and soil rehabilitation in accordance with the Factory Location Act and ordinances 21 42 511 526 21 15
Customer sites Environmental R&D Costs for research and development of technologies to minimize environmental impact and high-efficiency appliances and systems 422 514 1,158 1,029 92 129
Recycling of 
used gas appliances
Costs of recovery and recycling of sold gas appliances, packaging, etc. 0 0 9 8 0 -1
Social action programs Voluntary greenification, landscape conservation, nature conservation, beautification, 
support of local environmental activities, environmental advertising, disclosure of environmental information
44 17 1,305 1,258 -27 -47
Total 866 2,750 4,916 4,642 1,884 -274

Note:
Since decimal places have been rounded off to the nearest whole number, the calculated total and amount of increase or decrease may not match.
"Expenses" includes depreciation costs of 545 million yen in fiscal 2015 and 721 million yen in fiscal 2016.
Since the costs for environmental R&D are extracted from those for environmental protection, they may differ from the figures stated in the financial report.
Capital investment by Tokyo Gas Co., Ltd. (non-consolidated basis) was 153.2 billion yen, while the sales volume was 1,408,452 million yen.



<Main differences from the previous fiscal year>
  • Pollution prevention 
The decrease in investment was due mainly to decreased investment by the production department.
  • Global environmental protection
The decrease in investment was due mainly to a decrease in capital investment by the production department. 
 

Level of Environmental Burden    

  Level of Environmental Burden
Category FY2015 FY2016
Company business Pollution prevention NOx(plants)mg/m3  0.4 0.5
NOx(district heating and cooling centers)g/GJ 6.6 7.1
COD(plants)mg/m3 0.0 0.0
Global environmental protection Energy usage intensity(plants)GJ/million m3 201 206
Heat sales intensity (district heating and cooling centers)GJ/GJ 2.0 2.0
Energy usage(business offices)TJ 887 938
Resource saving Excavated soil (thousand  tons) 902 573
Industrial waste(tons) 4,462 4,449
General waste(tons) 1,016 1,045
Customer sites Environmental R&D (Reference figures) 
CO2emissions reduction (million  tons-CO2
340 394
Recycling of used gas appliances (Reference figures) 
Recovery of used gas appliances and scrap metal by SRIMS (tons)
3,861 3,715

Notes:Level of environmental burden is based on environmental performance data.Figures are rounded to the nearest whole number.



Economic Effect

(Unit: million yen)
Economic effect FY2015 FY2016 Difference
Cost reduction from the operation of energy-saving equipment 528 482 -46
Cost reduction from a reduction in the amount of excavated soil 12,161 11,664 -497
Sale of valuables 374 277 -97
Other (cost reduction from water conservation) 61 57 -4
合計 13,124 12,480 -644
Notes:The total and difference figures may not be equal to actual calculation results because the numbers are rounded off to the nearest integer.


<Main differences from the previous fiscal year>
  • Economic effect 
The economic effect decreased from the previous fiscal year due mainly to lower cost savings resulting from reductions in excavated soil.
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Compliance with Local Government Ordinances on the Environment and Energy

Tokyo Gas prepares and publishes the following plans and reports in accordance with local authority ordinances.
 
Tokyo Global Warming Action Plan (Large Establishments)
  • FY2016 Hamamatsucho (Head Office) Building
  • FY2016 Senju Techno Station
Global Warming Action Report (Small/Medium-Sized Establishments)
Environmental Energy Reporting Program
  • Energy Status Reports
  • Environmental Energy Plans
Saitama Pref. FY2016 Global Warming Action Plan Report
Kanagawa Pref. FY2016 Report on Results of Action against Global Warming in Business
Yokohama City FY2016 Report on State of Action against Global Warming
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

City Gas CO2 Emission Factors

CO2 is emitted when city gas is used. There are two ways of calculating CO2 emissions: calculating them directly from the amount of city gas used (in m3), and calculating them from the calorific value (MJ).

 

Calculation from usage (m3)

CO2 emission factor for city gas in terms of usage of kg-CO2 per m3N of gas

CO2 emission factor
Service area (Pref.) Type of gas CO2 emission factor per 1 m3N (kg-CO2/m3N)
Tokyo, Kanagawa, Chiba, Ibaraki, Tochigi, Saitama 13A
  • Emission factor for residential and other low-pressure gas users
    2.21kg-CO2/m*1
 
  • Emission factor for factory, commercial building, and other medium-pressure gas users
    2.19kg-CO2/m*2
 
  • Emission factor at Standard Temperature and Pressure 
    2.29kg-CO2/m3*3
Gunma 
*4
13A
  • Emission factor for residential and other low-pressure gas users
    2.11kg-CO2/m*1
 
  • Factory, commercial building, and other medium-pressure gas users 
    2.09kg-CO2/m*2
  • Emission factor at Standard Temperature and Pressure 
    2.18kg-CO2/m3*3
limited areas in Yotsukaido city, Chiba 12A
  • Emission factor for residential and other low-pressure gas users 
    1.90kg-CO2/m*1
  • Factory, commercial building, and other medium-pressure gas users 
    1.88kg-CO2/m*2
  • Emission factor at Standard Temperature and Pressure 
    1.96kg-CO2/m3*3
 
*1 At 15°C and gauge pressure of 2 kPa
*2 At 15°C and gauge pressure of 0.981 kPa
*3 0°C and 101.325kPa (1 atm)
*4 Same as the above service areas since October 14, 2016.


 

Calculation from calorific value (MJ)

CO2 emission factor for city gas in terms of kg-CO2 per MJ of gas 
or 
CO2 emission factor for city gas in terms of kg-C per MJ of gas

Unit calorific values and CO2 emission factors
Service area (Pref.) Type of gas Calorific value 
per 1 m3
MJ/m3N (kcal/m3N)
CO2 emission factor 
per 1 MJ of calorific value 
(kg-CO2/MJ)
C emission factor 
per 1 MJ of calorific value 
(kg-C/MJ)
Tokyo, Kanagawa, Chiba, Ibaraki, Tochigi, Saitama 13A 45(10,750) 0.0509 0.0139
Gunma * 13A 43.14(10,306) 0.0506 0.0138
limited areas in Yotsukaido city, Chiba 12A 38.52(9,200) 0.0509 0.0139
Same as the above service areas since October 14, 2016.

▶ Calculation of CO2 emission factors from proportional composition of city gas(PDF:356KB)pdf
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Assessment of CO2 Emission Reduction due to Reduction of Purchased Electricity

The amount of thermal power generation varies according to electricity usage

In Japan, the electricity supplied by electric utilities is generated primarily by thermal power, nuclear power, and hydroelectric power plants. 
Nuclear power plants operate at full capacity except when undergoing routine inspection, while the annual power output of hydroelectric power plants is determined by the amount of rainfall. 
Therefore, in terms of total annual output, it is most likely to be thermal power generation that is cut when electricity use is reduced by energy-saving measures.

Lower electricity usage results in lower thermal power output

For more details▶ GHG Protocol Guidelines pdf
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.