Sony products consume electrical power while used in the hands of their owners, resulting in indirect emissions of CO2. Having set a target for reducing annual greenhouse gas emissions from product use of 30% from the fiscal year 2008 level by fiscal year 2015, Sony is promoting the incorporation of energy-saving features in all product categories. In fiscal year 2011, average greenhouse gas emissions per product were 32% lower than in fiscal year 2008. Sony's total CO2 emissions over the entire life cycle of all products sold in fiscal year 2011 were approximately 22.97 million tons, 19% lower than for products sold in fiscal year 2010, thanks to the incorporation of energy-saving features into products and to a decline in sales volume.

Note: In theory, emissions during product use in the current fiscal year should be calculated from the total quantity of electrical power consumed by previously sold Sony products that are still in use by consumers in the current fiscal year. However, given the difficulty of determining how many previously sold Sony products are still in use by consumers of the total number of Sony products sold to date, Sony uses the total quantity of electrical power consumed while in use over the lifetime of Sony products sold in the current fiscal year as an indicator for CO2 emissions during use.