Actions on Materiality
Energy / Emissions (FY2017 Report)
Reasons why materiality is important for our business
The Daigas Group, as an energy business operator, sees it as important to promote more efficient use of energy resources and curtail greenhouse gas emissions over the entire business process, from drilling of natural gas to supply.
Inside of the Group
Management systems and its performance
Amount of CO2 emissions at LNG terminals per unit gas sales (G4-EN18),
Amount of CO2 emissions at office buildings per unit floor space (G4-EN18)
Daigas Group is committed to promoting environmental activities on a group-wide basis by formulating "Daigas Group Environmental Activities Policy" and "Rules for Environment Management Systems" in line with related environmental laws.
(International and domestic standards)
- Act on the Rational Use of Energy
- Act on Promotion of Global Warming Countermeasures
- Waste Management and Public Cleansing Law
(In-house policy and standards)
- Daigas Group Environmental Activities Policy
- Osaka Gas Environmental Policy
- CSR Purchasing Guidelines
- Rules for Environment Management Systems
- Rules for Customer Service
At Osaka Gas, a unified environmental management system (EMS) based on ISO 14001 is deployed across the company under the supervision of the "CSR Executive" (Vice President), and all employees work to reduce the environmental impact of business activities and ensure that environment-related laws and regulations are complied with.
In addition, the Daigas Group's 69 domestic affiliates operate their own EMSs, such as ISO 14001, Eco Action 21, and the “ Osaka Gas Environmental Management System (OGEMS). ”
Environmental Management Promotion Organization
Environmental Management System (EMS)
EMS is a mechanism for achieving continual improvement by following the PDCA cycle of Plan, Do, Check, and Act.
In fiscal 2017, CO2 emissions at LNG terminals was 10.5 t-CO2 per 1 million m³ of gas sold and CO2 emissions at office buildings was 61.0 t-CO2 per 1,000 m² floor space, meaning that we were able to achieve our target for fiscal 2017 of 12.3 tons or less and 74.4 tons or less, respectively.
Specific actions taken regarding materiality
Efforts to curb CO2 emissions at LNG terminals
The Daigas Group has been striving to reduce CO2 emissions at LNG processing terminals by undertaking various energy-saving activities. By recovering cryogenic energy generated at LNG gasification facilities, the Group is reducing the amount of electricity it purchases, for example. Electricity generation using this cryogenic energy is called LNG cryogenic power generation, which is a power generation system that does not emit CO2 at all, because no fuel is required in the process of power production.
To promote the efficient operation of our LNG cryogenic power generation facilities, we are implementing a variety of measures. We have begun to supply LNG cryogenic energy for the cooling process of a plant of a petrochemical company adjacent to an LNG terminal, thus contributing to energy saving and the reduction of CO2 emissions at nearby plants as well as at our own.
Furthermore, at Senboku LNG Terminal, we have installed inverters at three out of eight seawater-transport pumps being used for LNG gasification. Following the modification of the pumps, their variable-speed operation became possible in 2012, leading to the reduction of power consumption, along with reduction of 25% energy unit for those seawater-transport pumps at the Terminal. In addition, replacement of illumination devices degraded with age reduced electricity consumption at the Terminal. In fiscal 2014, about 300 of the 800 outdoor illumination devices were replaced with explosion-proof LED lighting devices, resulting in a cut of 410,000 kWh in annual power consumption. At Himeji LNG Terminal, outdoor LED lighting devices began to be installed in fiscal 2016. In fiscal 2017, 117 such devices were installed there. Other energy-saving measures in place at Himeji LNG Terminal include the introduction of 73 power-saving computers during system renewal.
Efforts in office buildings
Osaka Gas is promoting energy conservation and reducing CO2 emissions by employing advanced high-efficiency equipment and control systems when renovating or repairing buildings, and by undertaking "Green Gas Building Activities" aimed at revamping energy management for the facility as a whole.