Environmental Report 2025

Measures to Address Climate Change

Climate change is a critical global issue that requires further strengthened efforts worldwide.
　The JAE Group in Japan is addressing climate change through three pillars: environmental awareness training, production-related measures, and measures at plant facilities.

Greenhouse Gas (GHG) Emissions of the JAE Group

In fiscal 2024, the JAE Group’s GHG emissions were 38,434 t-CO2, representing a 64% reduction compared to fiscal 2017.
　This reduction was achieved through the introduction of renewable electricity at HAE, YAE, SAE, FAE, MGC, and JAE (including NLC), as well as through energy conservation activities across the Group.

Energy intensity (t-CO₂/100 million yen) is calculated based on total GHG emissions in Japan and overseas divided by consolidated net sales.

The conversion factors for CO₂ emissions from domestic electricity use are based on the values published by each power company in the Ministry of the Environment’s list of calculation methods and emission factors.

　In fiscal 2023, we also set new GHG reduction targets (covering Scope 1 and Scope 2 emissions at domestic and overseas production sites). Going forward, we will continue our efforts to achieve carbon neutrality by 2050.

As a Groupwide activity that includes overseas production sites, we will continue to monitor our electricity consumption, greenhouse gas emissions, and emissions per sales unit, while further promoting energy savings in infrastructure and production equipment, efficient production, and the introduction of renewable energy. Starting in fiscal 2022, we have doubled the previous energy-saving targets and implemented energy-saving measures at each production site, as illustrated in the examples below. Last year, we also received an energy-saving diagnosis from external experts, and we will continue promoting energy conservation.
　Regarding the introduction of renewable energy, we switched to 100% renewable energy-derived electricity at four domestic production sites and NLC, and installed the following solar power generation system on the rooftop of the JAE Akishima Plant in 2024. The results of its operation will be used to determine the feasibility of introducing similar systems at other sites.

Status of response to SBT

Status of progress toward uniform goals in the electrical and electronics industries

Status of Response to Tokyo Cap-and-Trade Program

Contribution of the JAE Group Forest

Fiscal 2024 Energy Conservation Case Studies

Plants and related facilities and production system

Implementation Details (2)
Power Reduction in Gold-deposition Stripping Equipment (HAE)	In continuous plating of very small parts, jigs are used to control solution volume. Over prolonged use, a small amount of metal precipitates on the jigs, which can adversely affect the plating film, requiring periodic stripping. Conventionally, the stripping solution was heated and the jigs immersed, with chillers and temperature controllers consuming significant power to raise and maintain the solution temperature. The company internally developed and evaluated a stripping solution that provides the same performance (stripping time) at room temperature as the heated type. This allows operation without a chiller or temperature control.
	Effect	Notes
	Approx. 19,640 kWh/year	―

Implementation Details (3)
Energy Saving through Automatic Control of Compressor Operation （YAE）	The air used in the factory is generated by multiple compressors, stored in a receiver tank, and then supplied throughout the facility. Previously, each compressor had to be manually switched on and off, which sometimes resulted in excessive air generation and wasted energy. By installing a control panel for automatic adjustment of the number of units in operation, the system now operates only the compressors required to meet demand in real time, thereby eliminating excessive air generation and achieving significant power savings.
	Effect	Notes
	1,818,175kWh /year	―

Lighting Improvements

Implementation Details (1)
Switched to LED lighting (JAE)	We replaced the ceiling lights on the second floor of Factory No. 1, achieving a reduction of 44,319 kWh/year. We also replaced the ceiling lights on the floor of Factory No. 2, achieving a reduction of 37,321 kWh/year.
	Effect	Notes
	Total of 81,640 kWh/year	Building lighting has been systematically converted to LED since fiscal 2013. We plan to continue systematically replacing outdated lighting, focusing on the welfare office building and Factory No. 1 floors. As of the end of fiscal 2024, 9,185 out of 11,507 lights had been converted to LED (progress rate: 80%).

Activities at Overseas Production Sites

Implementation Details (1)
Energy-saving Initiatives at JAE-WJ Power supply to the lighting system using solar power on the factory building rooftop Charging electric vehicles (two-wheelers) using solar power.	Introduction of solar power generation Introduction of rooftop solar power generation  Power generated in fiscal 2024: 16,605.2 kWh Introduction of a solar-powered storage system  Power generated in fiscal 2024: 27,517.5 kWh
	Effect	Notes
	Total 44,122.7kWh /year	ー

Logistics related

1) CO₂ reductions from modal shift (railway transport)

Reduced CO₂ emissions by switching from truck transport (crates) to railway transport (containers)
CO₂ reduction in fiscal 2024:
2.337 tons (compared to truck transport)

2) CO₂ emissions reductions by using reusable trays

We reduced CO₂ by reusing connector trays.
The CO₂ reduction in fiscal 2024:
112.263 tons.
*40.675 tons of reusable trays/year x conversion factor of 2.76 t-CO₂ = 112.263 t-CO₂

Activities to Increase Awareness of Measures to Fight Climate Change

Measures to Fight Climate Change through Supply Chain Cooperation