HOYA Strategy for CO₂ Reduction

The HOYA Group is globally conducting its environmental protection activities, in which attempts are being made to reduce CO₂ emissions by paying special attention to its "energy consumption."

CO₂ Reduction Targets

In order to accelerate initiatives to reduce greenhouse gas (CO₂) emissions, we have started conducting studies and holding discussions internally on the medium- and long-term targets and roadmaps for the HOYA Group. For fiscal 2022, we are implementing measures tentatively targeted at reducing annual emissions by 1% (compared to fiscal 2019 level) until our medium- and long-term targets are set.

CO₂ Emissions

In fiscal 2021, HOYA’s CO₂ emissions (Scope 1 and 2 emissions) amounted to 425,902 tons, up 4.9% year on year and up 1.8% compared to its fiscal 2019 level. On the other hand, CO₂ emissions per unit of net sales are on a downtrend. We will continue to accelerate our initiatives so that we can successfully reduce not only CO₂ emissions per unit of net sales but also total CO₂ emissions.

Note that the CO₂ emissions are calculated, for each of the production bases^*1, from the electric power and fuel consumptions as determined by the summation formulas standardized for the whole HOYA Group.
*1 Some of non-production bases are included

Response to the TCFD

In November 2021, HOYA declared its support for the recommendations by the Task Force on Climate-related Financial Disclosures (TCFD) and joined the TCFD Consortium. Currently, we are working on the task of disclosing information related to climate change in accordance with the TCFD recommendations.

Energy saving and power saving activities

At production bases, we are replacing facilities with energy-saving types (such as adopting ice thermal storage systems and high-efficiency transformers), conducting energy-saving activities (such as optimizing the operating hours of boilers and air-conditioning equipment) and promoting roof-greening, etc. We are also endeavoring to suppress CO₂ emissions from non-production bases by such means as introducing casual wear, adjusting the indoor temperature appropriately and implementing efficient lighting in offices.

Examples of energy and power saving initiatives

• Use of the Joint Crediting Mechanism (JCM)
• In 2016, we introduced a heat recovery heat pump at the eyeglass lens plant in Vietnam. It is used to save energy and reduce CO₂ emissions by using the heat that used to be expelled to the outside air when cold heat was supplied as a source of cold heat for the production process and as an auxiliary heat source for heating the water used in the manufacturing process. Before introducing the heat recovery heat pump, we used only electric heaters to obtain the desired temperature.

• At the eyeglass lens plant in Vietnam, one of the existing centrifugal chillers was replaced with a highly efficient inverter centrifugal chiller. By using the new chiller for regular operation and the old one as backup equipment, we achieved a lower introduction cost, improved energy efficiency, and reduced CO₂ emissions at the same time.

• Introduction of renewable energy
  Some of our business establishments engaged in the eyeglass lens business—namely, HOYA Vision Care ATC Ramsey in the United States and HOYA LENS DEUTSCHLAND GMBH in Europe—are running on 100% renewable energy. We will continue to promote the introduction of renewable energy on a Group-wide scale.