Environmental Performance Data
- Environmental Policy
- Environmental Activities Policy
- Environmental Action Targets
- Response to Climate Change (Climate change response policy / Energy consumption / Atmospheric emissions / Water management policy / Water withdrawal and discharge)
- Resources and Waste (Policy on relevant issues / Chemical substances / Waste)
No. of Affiliated Companies* of which data compiled
- * Affiliated Companies (58 companies)
- Of Osaka Gas's 138 consolidated subsidiaries, 58 companies are subject to the calculation of GHG emissions. Those housed in office buildings as tenants and whose environmental data are difficult to grasp and whose environmental effects are minimal are not subject to such calculation. Also excluded from the calculation are overseas companies whose environmental impacts are minimal. However, the aggregate number of companies may differ by fiscal year and by item due to company mergers and others.
Affiliates subject to compilation of environmental performance data (FY2018)
(As of March 31, 2018)
Group companies No. of companies Company names Energy Resources & International Business Unit 1 Marianas Energy Company LLC LNG Terminal & Power Generation, Engineering Business Unit 14 Gas and Power Co., Ltd., Nakayama Joint Power Generation Co., Ltd., Nakayama Nagoya Joint Power Generation Co., Ltd., Hirogawa Myojinyama Wind Farm Co., Hayama Wind Farm, Yura Wind Farm Development, Hizen Wind Farm, Hirao Wind Farm, Senboku Natural Gas Power Generation, Osaka Gas Liquid Co., Ltd., Cold Air Products Co. Ltd., Cryo-Air Co. Ltd., Kinki Carbonic Co., Ltd., Gasnet Co. Ltd. Pipeline Business Unit 2 Kinpai Co., Ltd., Osaka Gas Renotech Co., Ltd. Residential Energy Business Unit 12 Living Maintenance Service Hokuto Co., Ltd., Living Maintenance Service Osaka Co., Ltd., Osaka Gas Cooking School Co., Ltd., Create Kansai Co., Ltd., Osaka Gas Customer Relations Co., Ltd., Aqua Brain Co., Ltd., Kansai Business Information Inc., Osaka Gas Housing & Equipment Co., Ltd., Osaka Gas Security Service Co., Ltd., Osaka Gas LPG Co., Ltd., Nissho Gas Supply Co., Ltd., Daiya Nensho Co., Ltd. Commercial & Industrial Energy Business Unit 9 OGCTS Co., Ltd., G & M Energy Service Co., Ltd., Ashiyahama Energy Service Co., Ltd., Rokko Island Energy Service Co., Ltd., Enetec Kyoto Co., Ltd., Enetec Osaka Co., Ltd., Nabari Kintetsu Gas Co., Ltd., Toyooka Energy Co., Ltd., Shingu Gas Ltd. Group Headquarters 8 OG Sports Co., Ltd., Osaka Gas Autoservice Co., Ltd., Osaka Gas Finance Co., Ltd., Osaka Gas Business Create Co., Ltd., Active Life Inc., KRI Inc., Osaka Gas Engineering Co., Ltd., i-support Co., Ltd. Osaka Gas Urban Development Group 3 Osaka Gas Urban Development Co., Ltd., Osaka Gas Facilities Corp., Kyoto Research Park Co., Ltd., OGIS Research Institute Group 6 OGIS-RI Co., Ltd., Sakura Information Systems Co., Ltd., SIS Techno-Service Co., Ltd., JOE Corp., Ltd., Ube Information Systems Inc., System Answer Inc. Osaka Gas Chemicals Group 3 Osaka Gas Chemicals Co., Ltd., Minabe Chemical Industries Ltd., Mizusawa Industrial Chemicals, Ltd. Total 58
Environmental Activities Policy
|Environmental Activities Policy|
Environmental Action Targets
|FY2015 Results||FY2016 Results||FY2017 Results||FY2018 Results||Targets for FY2021|
|Gas business||Environmental Management Efficiency (yen / 1,000 m³)*1||60||59||52.5||11.6 (46.6)*2||14.2|
|CO2 emissions per 1 million m³ of gas produced (t-CO2 / 1 million m³)*3||10.9||11.7||10.5||9.6||11.7|
|CO2 emissions per 1,000 m² of floor space of office buildings (t-CO2 / 1,000m²)||65.6||61.8||61.0||54.7||56.5|
|Industrial waste from LNG terminals (final disposal rate) (%)||0.2||0.3||0.1||0.1||1% or less|
|Industrial waste from facilities other than LNG terminals (final disposal rate) (%)||1.3||0.9||0.7||0.8||1% or less|
|General waste (final disposal rate) (%)||2.3||2.4||2.6||2.3||3% or less|
|Excavated soil (final disposal rate) (%)||1.2||1.3||1.4||0.4||1% or less|
|Polyethylene (PE) pipes (recycling rate) (%)||100||100||100||100||100%|
|Gas meters (reuse rate) (%)||99.4||99.3||99.6||99.5||98% or more|
|Group companies||Group companies' businesses CO2 emissions per electricity generated||▲32%||▲34%||▲33%||▲32%||15% decrease compared to FY2009|
|Other businesses (CO2 emissions per sales) (t-CO2 / 10 million yen)||7.7||8.7||8.9||9.2||8.2|
|Industrial waste / general waste (final disposal rate)*4||6.7||8.4||9.5||3.3||4% or less|
|Amount of CO2 emissions reduced by the entire Group (t-CO2)||-||-||-||0.61 million tons||7 million tons|
The CO2 emission coefficient for the purchased electricity used to calculate the environmental management efficiency rate was 0.69 kg-CO2/kWh until FY2017 and 0.65 kg-CO2/kWh for FY2018.
- *1 Environmental Management Efficiency
- The rate until FY2017 was calculated using the LIME2 coefficient in terms of a certain volume of gas sold. The rate for FY2018 was calculated using the latest LIME figure in terms of a certain volume of gas produced.
- The FY2018 figure shown in the parentheses is a calculation based on the calculation formula used until FY2017.
- Figures until FY2017 represent CO2 emissions per gas sales volume.
- Until FY2017, core companies were subject to calculation of final disposal rates. In FY2018, 57 companies among the 138 consolidated subsidiaries were subject to calculation of final disposal rates. Those housed in office buildings as tenants and whose environmental data are difficult to grasp and whose environmental effects are minimal were not subject to such calculation. Also excluded from the calculation were overseas companies. The number of companies subject to calculation may vary depending on year due to corporate merger and the like.
Response to Climate Change (management of resources and emissions)
Climate change response policy
|Consumption of non-renewable energy*1||73,014,982||72,907,137||76,985,661||89,404,762|
|Electricity and fuel consumption||Electricity consumption (1,000 kWh)||412,186||443,634||419,049||414,691|
|Natural gas consumption (1,000 m³)||1,303,807||1,314,685||1,408,603||1,599,016|
|Other fuel consumption (coal, heavy oil, etc.) (GJ)||10,305,594||9,323,499||9,554,074||13,493,898|
|Vehicle fuel consumption||Gasoline (kl)||2,767||2,633||2,509||2,523|
|City gas consumption (1,000 m³)||304||256||181||141|
|Diesel oil (kl)||575||748||738||332|
|LPG (1,000 m³)||71||270||232||20|
|Heavy oil, etc. (GJ)||0||0||0||0|
- *1 Calculation of energy consumption
- Per-unit calorific values listed below are used in calculating the energy being used.
Gas Gas before
Gasoline Diesel oil LPG LNG Heavy fuel
Kerosene Coal Per unit calorific value 9.97
GJ / 1,000 kWh
GJ / 1,000 Nm³
GJ / 1,000 Nm³
GJ / kl
GJ / kl
GJ / 1,000 m³
GJ / t
GJ / kl
GJ / kl
GJ / t
City gas: based on data released by Osaka Gas
Other fuels: based on laws and ordinances instituted to promote measures to combat global warming
- Includes city gas which adjusted heat quantity.
- Representing gap from previous year
Greenhouse gas emissions (Scope 1 and 2)
Greenhouse gases subject to calculation are CO2, methane (CH4), N2O and chlorofluorocarbons (HFC).
|GHG emissions*1 (t-CO2e)||4,202,876||4,164,377||4,362,821||5,158,539|
|District heating and cooling||11,968||10,751||10,736||9,580|
|District heating and cooling||111,850||106,720||107,817||103,723|
|GHG emission for comparison*2 (t-CO2e)
Reference: grasping of the situation (t-CO2e)
|District heating and cooling||11,450||10,390||10,477||9,132|
|District heating and cooling||102,688||97,322||97,732||93,616|
Greenhouse gas emissions (Scope 3)
Calculation of Scope 3 greenhouse gas emissions started in FY2016, covering the Osaka Gas Group's entire value chain. The data since FY2017 have received third party verification.
|Greenhouse gas emissions (Scope 3) (t-CO2e)||-||27,926,333||31,763,841||31,471,045|
|Category 1||Purchased goods and services||-||555,513||535,317||552,547|
|Category 2||Capital goods||-||350,002||268,186||250,204|
|Category 3||Fuel procurement||-||4,475,334||5,090,592||5,370,828|
|Category 4||Transportation (upstream)||-||3,761||4,357||17,187|
|Category 5||Waste generated||-||55,382||55,414||57,798|
|Category 6||Business travel||-||2,710||2,476||2,364|
|Category 8||Leased assets (upstream)||-||-||-||-|
|Category 9||Transportation (downstream))||-||22,235||21,950||101|
|Category 10||Processing of products||-||-||-||-|
|Category 11||Use of products||-||22,017,035||25,296,910||24,725,918|
|Category 12||Product disposal||-||17||74||76|
|Category 13||Leased assets (downstream)||-||372,768||383,343||387,830|
|Non-energy CO2 (t-CO2)||-||-||-||3,645|
|Methane emission (t-CO2e)||2,341||2,299||1,883||2,016|
|Methane emission*3 (t-CH4)||94||92||75||81|
|Nitrogen oxide emission (t-NOx)||711||747||585||852|
|Sulfur oxide emission (t-SOx)||120||104||102||184|
Figures in the table do not appear to add up to the totals due to rounding.
- *1 Calculation of CO2 emissions
- The following emission coefficients are used to calculate CO2 emissions.
City gas Gas before
LPG LNG Heavy
Kerosene Coal Emission factor * 0.65 or 0.69 t-CO2 / 1,000 kWh 2.29
t-CO2 / 1000 Nm³
t-CO2 / 1000 Nm³
t-CO2 / 1000 m³
Emission factor used for calculation of emission before FY2017: 0.69 t-CO2 / 1,000 kWh stipulated in the Interim Summary by Target Achievement Scenario Subcommittee of the Global Environment Committee, Central Environment Council (July 2001)
Emission factor used for calculation of emission in FY2017: 0.65 t-CO2 / 1,000 kWh stipulated in the Plan for Global Warming Countermeasures adopted at the Cabinet meeting in May 2016.
Emission factor for gas is the value published by Osaka Gas.
Emission factor for other fuels: Ministerial Order for Promotion of Measures to Cope with Global Warming
- CO2 emissions are calculated using the actual value of the emission factor of the electric power company in the previous fiscal year. Until FY2015, CO2 emissions associated with purchased electricity consumption are calculated by the following formula using the data of the most recent (previous year) published by Kansai Electric Power Co., Ltd.
Calculation formula: (Electricity consumption amount in each fiscal year) X (Emission factor for each fiscal year: For example, the emission factor for FY2015 is the actual value in FY2014). The emissions since FY2016 are calculated by multiplying the usage volume for each electric power company by the emission coefficient for that company, in accordance with the agreements signed with multiple electric power companies.
Therefore, the year-to-year difference in CO2 emissions does not necessarily reflect the effect of emission control measures.
The effective emission factor is used as the emission factor to ascertain actual emissions due to electricity use. (reference: The adjusted emission factor, which reflects the Kyoto Protocol's credit scheme, is used in the Greenhouse Gas Emissions Calculation and Reporting System.)
- Methane emission is calculated using GHG coefficient 25. (Reference: IPCC Guidelines for National Greenhouse Gas Inventories 2012)
- Emissions of gases subject to the Act on Rational Use and Proper Management of Fluorocarbons are calculated.
Power plant capacity of renewable energy sources
|Power plant capacity (10,000 kW)*||Domestic||11.7||11.7||16.1||19.6|
- * Power plant capacity
- The power generation at the facilities owned by the Daigas Group is included but that at facilities under plan and under construction is not included.
Water management policy
Water withdrawal and discharge
|Total water withdrawal (1,000 m³)||607,553||536,395||601,066||633,336|
|Tap water, industrial water withdrawal (1,000 m³)||10,839||10,549||11,127||12,122|
|Groundwater withdrawal (1,000 m³)||1,985||3,553||3,475||3,572|
|Sea water withdrawal (1,000 m³)||594,729||522,294||586,464||617,642|
|Total water discharge (1,000 m³)||601,096||529,540||591,403||630,922|
|Discharged to municipal sewage system (1,000 m³)||1,639||1,775||1,788||1,685|
|Discharged to rivers (1,000 m³)||1,781||3,029||1,257||2,978|
|Discharged to sea (1,000 m³)||597,676||524,736||588,358||626,258|
COD (LNG terminal)
Resources and Waste
Policy on relevant issues
|Policy on raw materials / Policy on waste disposal / Policy on chemical substances|
Chemical substances that are subject to reporting under the PRTR law (Osaka Gas's LNG terminals)
Chemical substances produced by Osaka Gas affiliates that are subject to reporting under the PRTR Law
|Zinc compounds (water-soluble) (t/year)||Handled||623||439||413||368|
|General waste (tons)||Generated||1,292||1,217||1,200||1,085|
|Recycling rate (%)||9%||9%||9%||4%|
|Industrial waste (tons)||Generated||82,578||81,097||92,711||104,345|
|Recycling rate (%)||5%||4%||5%||3%|
|Used gas appliances, etc. (Osaka Gas)|
|(1) Collected (tons)||2,330||2,232||1,719||1,665|
|(2) Recycled (tons)||1,970||1,927||1,501||1,448|
|(3) Final disposal ((1)-(2))||359||305||219||217|
|(4) Recycling rate ((2)/(1))||85%||86%||87%||87%|
|Polyethylene pipes (Osaka Gas)|
|Excavated soil (Osaka Gas)|
|(1) Distance of installation works (km)||553||549||517||500|
|(2) Estimated amount of soil generated using conventional method*1 (10,000 tons)||131||130||120||118.3|
|(3) Reduced (10,000 tons)||51||51||49||47.7|
|(4) Generated ((2)-(3)) (10,000 tons)||80||80||71||70.5|
|(5) Recycled (10,000 tons)||70||71||63||64.9|
|(6) Recycling rate ((5)/(4))||90%||89%||89%||92%|
|(7) Utilized*2 (10,000 tons)||9||8||7||5.3|
|(8) Final disposal ((4)-(5)-(7)) (10,000 tons)||1.2||1.0||1.0||0.3|
|(9) Final disposal rate ((8)/(4))||1.5%||1.3%||1.4%||0.4%|
|Copy paper (1,000 sheets)|
|Compliance with the Home Appliance Recycling Law||Air Conditioners|
|Number of units recycled (units)||4,624||4,093||3,870||4,205|
|Gross weight recovered (t)||193||170||159||173|
|Weight recycled (t)||173||154||144||156|
|Number of units recycled (units)||373||345||321||347|
|Gross weight recovered (t)||14||13||13||14|
|Weight recycled (t)||12||12||11||12|
Figures in the table do not appear to add up to the totals due to rounding.
- *1 Estimated amount of soil generated
- The amount that is believed to be generated when doing pipe installation without using current methods for reducing the amount of excavated soil. The difference between this figure and the actual amount generated is the reduced amount.
- The amount used outside of Daigas Group, such as for improving farmland soil. Final disposal is the amount generated minus the amount recycled and the amount utilized.