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Environment

Product Initiatives (Expand businesses that contribute to the environment)

Product Initiatives (Expand businesses that contribute to the environment)

EnvironmentProduct Initiatives (Expand businesses that contribute to the environment)

Policy

We are actively promoting initiatives that contribute to the environment in order to “realize a more affluent future” by leveraging our technology and experience honed over many years.

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Contributions to the Mitigation of Climate Change by Reducing Product CO2 Emissions

Performance Data
Contributions to the Mitigation of Climate Change by Reducing Product CO2 Emissions

The Meiden Group aims to benefit the environment by using renewable energy like solar, wind and hydroelectric power and by supplying products and services that are more efficient and thus energy saving.
In fiscal 2019, we set environmental contribution (projected reduction in CO2 emissions from product sold) targets of 800,000 t/year. We increased shipment of electric vehicles, high-voltage inverters, hydroelectric generators, and hydraulic turbines, enabling us to achieve our target for the fiscal year, totaling emissions reductions of 848,000 t/year.

Performance Data

The reasoning behind calculation of environmental contributions of products and services is as follows.

Applicable products/businesses CO2reduction volume
Power conditioners for solar power generation Emissions reduction if grid power is substituted with renewable energy
Wind power sales business
Hydroelectric generators*
Electrical equipment for electric vehicles Emissions reduction if substituted for gasoline vehicles of the same grade
Power conditioners for storage batteries Emissions reduction from substitution of pumped hydroelectric generation (high efficiency)
Electrical equipment for electric forklifts Emissions reduction from the Company’s existing products (reduction in lost energy)
Engines and turbine generators
Transformers
Inverters
Uninterruptible power supplies

*Calculated by multiplying the difference in volume of CO2 emissions at the point of use, by the expected life and annual sales volume. However, wind power generation is calculated based on annual power generation performance.

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Wind Power Generation Business

Initiatives
Wind Power Generation Business

M WINDS Co., Ltd. and its affiliates operate a wind power generation business and supply renewable energy.
M WINDS conducts electricity sales from wind power generators at three locations* in Japan (30 wind turbines with a generating capacity of 51,000 kW). They conduct environmental assessments when constructing and installing wind power generators, investigating, predicting, and evaluating impacts from various perspectives, such as that on ecosystems, and implement environmental protection measures as appropriate while considering the opinions of local governments and residents.

*Hachiryu Wind Farm (Akita Prefecture): 18 wind turbines with a generating capacity of 31,367 kW
Wajima Community Wind Farm (Ishikawa Prefecture): 10 wind turbines with a generating capacity of 18,067 kW
Choshi Shiosai Wind Farm (Chiba Prefecture): 2 wind turbines with a generating capacity of 2,355 kW

Aiming for increased utilization of wind power

We generated 105,049 MWh of electricity in fiscal 2019, following on from fiscal 2018 when we also generated more than 100,000 MWh of power. Going forward, we aim to further improve the utilization rate in order to increase our environmental contributions.

Total Power Generation Performance of the Meiden Group

Total Power Generation Performance of the Meiden Group
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Motors and Inverters for Electric Vehicles

Motors and Inverters for Electric Vehicles

Meidensha supplies motors and inverters installed in electric vehicles, which are becoming more common throughout the world. We promote the development of technology and products for EV and HEV drive systems. One of our new initiatives was to prototype and develop integrated drive units combining motors and gearboxes.
By combining a 100-kW motor with a gearbox, we utilized gear lubricant oil to cool the motor and downsized the unit. In addition, by reducing the number of parts and making it smaller and lighter, it is also easier to mount on vehicles.
We are working to develop and introduce new technologies to cater to the diverse needs of customers.

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Inverter Equipment

Inverter Equipment

Since the 1980s, Meidensha has been developing a wide range of inverters. By controlling the rotation of various drive machines with inverters, a large energy saving effect is achieved.
A large energy saving effect can be obtained by replacing existing system of damper controlling dust collection blower, exhaust fan, boiler push-in fan, etc. with controlling the number of rotations with an inverter.
In addition, energy saving can be achieved by controlling the air volume of the air conditioning system and gas pressure feeding system in a plant according to the season or business on-peak/off-peak operations.

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Power Conditioner System for Photovoltaic Generation

Power Conditioner System for Photovoltaic Generation

Power conditioners system (PCS) is the most essential part of photovoltaic generation systems. We have consistently supplied transformer-in PCS with a built-in commercial frequency isolation transformer that emphasizes safety and security so far. PCS with 500kW output has the highest conversion efficiency of 98.7% in the world. Container type and outdoor storage cubicle type packaged with a set of equipment are also knapped.

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Hydroelectric Power Generation Business

Hydroelectric Power Generation Business

Hydroelectric power is a form of renewable energy that enables steady generation of electricity throughout the year. Meidensha has delivered many small, medium, and large generators to customers in Japan and overseas.
Many hydroelectric power generation facilities have deteriorated due to many years of operation. It is effective to renovate in the most suitable way for each power facilities. Renovation can be expected to improve efficiency/save energy, improve reliability/maintainability, and be environmentally friendly. We investigate the current status of each power plant and propose optimal renovations using the latest technology.

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