Environment – Contribution to Reducing CO2 from Product Usage
As dozens of times more CO2 is emitted during product usage than during production, the Mitsubishi Electric Group has designated Reducing CO2 from Product Usage and Expansion of Contribution to Reducing CO2 from Product Usage as important tasks.
The Mitsubishi Electric Group has approximately 260 products. We pursue technological innovation and improved energy efficiency for products designed and developed in house that we have determined through product environmental analysis to have a major environmental impact due to CO2 generation during use.
Targets of the 8th Environmental Plan (Fiscal 2016 to 2018) for Reducing CO2 from Product Usage and Achievements in Fiscal 2017
Power consumed by the customer during product use is viewed in terms of CO2 emissions from production of the power used. Increasing product energy efficiency can reduce CO2 from product use. Under its 8th Environmental Plan (fiscal 2016 to 2018), the Mitsubishi Electric Group aims to achieve an average reduction rate of 35% compared to fiscal 2001, over 107 product groups.
Fiscal 2017 saw further reductions achieved mainly in the industrial mechatronics area, leading to an average reduction rate of 35%, which brings us a step closer to our goal.
Package Air Conditioner Mr. SLIM: Slim ZR Series Type P280
Equipped with the industry's first full SiC DIPIPM* for year-round improved energy consumption efficiency, this totally energy-efficient product reduces electricity consumption.
Low-loss circuits and high-efficiency converters also reduce peak power, delivering peak energy efficiency that decreases contract demand.
- SiC: Silicon carbide, DIPIPM: Dual Inline Package Intelligent Power Module
Station Energy Saving Inverter (S-EIV)
Supplies surplus power left over from regenerated electric power produced if rolling stock brakes where power cannot be completely consumed by other rolling stock running nearby, powering station lighting, air conditioning, escalators and more, and contributing to overall conservation of energy in the rail system.
Example of Efforts toward Expansion of Contribution to CO2 Reduction
Heating, Cooling, and Air Conditioning
We maximize the potential of high-efficiency devices such as inverter compressors and power semiconductors, offering heating, cooling and air conditioning with industry-leading energy saving functionality.
Our global development efforts focus on exploiting high-level energy-saving technology in air conditioners, but as we expand geographically we have started to encounter differences such as climate and customer requirements, as well as in the range of environmental regulations. We are globalizing our development and production systems in order to adapt to local requirements in a speedy and timely manner. For example, outside Japan we acquired an Italian air conditioning company (MEHITS, previously DeLclima) in 2015, and set up a new company in Turkey in 2016 for the development and production of room air conditioners. In Japan, we completed work on a heating and cooling air conditioner demonstration facility in our Air-Conditioning & Refrigeration Systems Works in Wakayama Prefecture in 2016. An air conditioning design/development and evaluation building is under construction at our Shizuoka Works, and is scheduled to be operational in 2019. These initiatives contribute to a reduction in CO2 emissions.
Global Development Systems to Offer Products for Local Markets
We are the only manufacturer that offers a one-stop service to rail transport systems for running, stopping, and management, offering a range of electrical equipment such as propulsion systems, main motors, and Station Energy Saving Inverter (S-EIV). Our ability to manufacture railcar air-conditioner units also contributes to energy savings throughout the rail system.
Railways have increased in importance globally in recent years in line with the move toward mass transit systems with lower environmental impact, and we are building up business structures for rolling stock electrical equipment in all territories to respond to that demand. For example, we acquired the Italian rolling stock air conditioner manufacturer KLIMAT-FER in 2013. We also started collaboration with the Polish rolling stock air conditioner manufacturer MEDCOM in 2016 in the European market. We strengthened our ability to respond to local manufacturing requirements in the USA in 2014. In Asia and specifically in India, which is forging ahead with plans to introduce rail transport in many cities, we have a rolling stock electrical equipment plant which became operational in 2015 and have now established a manufacturing, sales, and maintenance capability.
Providing Electrical Equipment for Regions with Growing Attention in Rail Transportation
From vertical transport devices such as elevators and escalators through to lighting and air conditioning, we offer a wide range of products for use inside buildings. Improving the energy efficiency of these products allows energy to be saved throughout the building. We also offer building management systems that incorporate energy-efficiency enhancing devices and a range of sensors to provide system control, enabling building-wide energy savings and lower operating costs.
There has been rapid adoption of vertical transport devices in the cities of emerging nations, with a corresponding increase in demand. We are also seeing an increasing need in mature markets for replacement of existing vertical transport systems that have been in use for many years. We are therefore building up our development capability and improving production capacity in all regions to respond to these demands. New plants became operational in 2016 in India and Thailand, and a new test facility will become operational in Thailand in 2017.
A new research center opened at our original plant in Inazawa (Aichi Prefecture) in 2016. With a view to the greater global development of building systems, we are building up our capacity to train and develop people for sales, manufacturing, construction, and maintenance of vertical transport devices and building management systems.
Wide Range of Products for inside Buildings
Targets of the 8th Environmental Plan (Fiscal 2016 to 2018) for Expansion of Contribution to Reducing CO2 and Achievements in Fiscal 2017
The Mitsubishi Electric Group is working to visualize and expand our Contribution to Reducing CO2 from Product Usage. Contribution to reducing CO2 is represented by the amount of generated CO2 deemed saved by switching from older products to new, energy-efficient ones. The calculation is based on the following formula, which multiplies the effect of reducing CO2 over the life of the product by the number of units sold.
Contribution to reducing CO2 = Effect of reducing CO2 from product usage per unit × Number of units sold during the fiscal year
We use official standards and industry-mandated calculation methods when computing our contribution to reducing CO2. Where no calculation method is specified, we make calculations based on our own product scenarios. Calculations for interim products are based on GHG Protocol Scope 3 Guidance, with proportional division by product weight and percentage of sales.
The target of the 8th Environmental Plan (fiscal 2016 to 2018) is to contribute to a reduction of 92 million tons across 127 or more product groups, and the contribution for fiscal 2017 was a reduction of 69 million tons across 119 product groups.*
- This is more than the CO2 emitted by fuel consumption in the Tokyo Metropolitan region, which is 60.6 million tons (Bureau of the Environment, Tokyo Metropolitan Government, July 2016).
Breakdown of Products with Assessed Contribution to Reducing CO2 from Product Usage
|Examples of Products||Standard/Benchmark
Used for Calculation
|End Products (88)||Plant monitoring control systems, railcar air-conditioning systems, onboard information systems (TIS, ATC, TIMS), monitor/protection control systems for power generation plants, particle therapy systems, circuit breakers, elevators, intelligent transport systems (ITS), satellite communications earth station facilities, optic/wireless access systems, air conditioners, televisions, refrigerators, Lossnay, processing machines, robots, lighting fixtures/lamps, IH cooking heaters, etc.||Contribution from reducing power consumed by the product|
|Energy-saving support equipment, elevator modernization, Lossnay heat exchange amount||Reduced power utilization through introduction of energy efficiency enhancing devices, contribution from upgrading to highly efficient components during refurbishment, previously wasted energy used by heat exchange|
|Circuit breakers, switchgears||Reduction in leaked SF6 gas (CO2 equivalent)|
|Photovoltaic power generators, turbine generators||Power produced by the generator minus energy used to generate the power, increase in power generated by improving generation efficiency|
|Interim Products (31)||Compressors purchased separately from air conditioners||Contribution from incorporation of products with lower power consumption|
|Inverters, motors||Contribution from incorporation of products with lower power loss|
|Electric power steering, alternators, starters||Contribution from incorporation of products with greater fuel efficiency, proportionally divided by weight|
|Combined-cycle thermal power generator||Reduction of fossil fuel use by replacement of old thermal power generators. Contribution calculated as reduction in CO2 emissions proportionally divided by sales|
- Calculations for products using electricity are based on the national or regional CO2 emission factors given in CO2 Emissions From Fuel Combustion Highlights (2013 Edition).
- Calculations for thermal power generation use thermal power generation factors from the calculation methods in the Initiative for Creating a Low-Carbon Society, issued by four electrical and electronics industry associations.
- Calculations for other forms of energy use and greenhouse gases use factors from the Greenhouse Gas (GHG) Emissions Accounting and Reporting Manual issued by the Japanese Department of the Environment and Ministry of Economy, Trade and Industry.