METI / ECCJ / ACE Training Program MTPEC04 (2006.02)

II-2(2). Energy Conservation Measures for the Commercial/Residential Sector

Reduction in Standby Power Consumption

Standby power consumption in the household sector accounts for about 10% of its total power consumption.
The home appliance industry has introduced a voluntary program for reducing standby power consumption.

Outline of Voluntary Efforts by Relevant Industries

In regards to products that essentially require standby power, the relevant industries shall work toward the goal up to 1W standby power by the end of FY2003 (by the end of freezing year 2004 for an air-conditioner).
In regards to major home electrical appliances except for the above-mentioned products, the relevant industries shall also work toward the goal as close to zero watt as possible in standby power of the productsf bodies by the end of FY2003.

Industries concerned: Japan Electronics and Information Technology Industries Association (JEITA), Japan electrical manufacture's Association (JEMA), and Japan Refrigeration and Air-conditioning Industry Association (JRAIA)

Achieved by around 75% models by May 2003

II-2(2). Energy Conservation Measures for the Commercial/Residential Sector

Promotion of Residence & Building with Superior Energy Conservation

By the revision of the Energy Conservation Law in 2002, the owner of the specified buildings (designated for the non-residential-purposed with the area over 2000m²) is required to notify its energy-conservation measures.
Promotion of labeling on energy performance.
Implementation of support measures for compliant houses and buildings

II-2(2). Energy Conservation Measures for the Commercial/Residential Sector

Promotion of High-Efficiency Boilers

Energy demand for hot-water supply dominates about 30% of the total energy consumption in a household.
A rebate system has been introduced to promote the proliferation of energy efficient hot-water systems.

CO² Refrigerant Heat-pump Boiler	Latent-heat Recovery Boiler	Gas Engine Boiler
Utilizing the principle of a heat pump used in an air-conditioner, it can be heated with energy of about 3 times more than input energy. This realized energy saving of about 30% compared to traditional combustion-type boiler.	It recovers latent heat of exhausted gas, which was usually wasted. This realized energy saving of about 15% compared to a conventional combustion-type boiler.	Use the gas-powered engine's exhaust heat and power to provide heat (main) and electricity (sub) for approx. 10% overall energy saving for a building.

II-2(2). Energy Conservation Measures for the Commercial/Residential Sector

Thorough Energy Management Utilizing IT

Utilization and Facilitation of HEMS (Home Energy Management System)

Use IT technology to promote and facilitate a system that supports the energy demand management at home (energy conservation behavior), e.g. a system that ensures the optimum operation of home appliances (air conditioners, refrigerators, etc.)or a real-time display of utility charges on energy use.

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