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By reducing the amount of greenhouse gases emitted as a result of Sharp’s worldwide business activities to the greatest extent possible, while at the same time significantly increasing the magnitude of reductions in greenhouse gas emissions through customer use of Sharp energy-creating solar cells and energy-saving products, the net reduction in greenhouse gases will more than balance out the level of emissions by fiscal 2010.

For fiscal 2007, Sharp’s greenhouse gas emissions were approximately 1.76 million t-CO2. (Click here for more details.) In contrast, the estimated amount of electrical power generated in fiscal 2007 by solar cells manufactured by Sharp during the 20-year period from fiscal 1987 to 2006 was approximately 1,870 GWh. This is equivalent to a reduction in greenhouse gas emissions of approximately 0.77 million t-CO2. In addition, the amount of reductions in greenhouse gas emissions from the effect of customer use of energy-saving products was 0.60 million t-CO2. For details on how these figures were calculated, see below.

Calculation Method
Reduction in greenhouse gas emissions resulting from customer use of energy-creating solar cells
The reduction in the amount of greenhouse gas emissions for the fiscal year in question is calculated by multiplying the CO2 emissions intensity (emissions per kWh of electricity consumed)^*1 by the estimated amount of power generated by solar power generation systems. The estimated amount of power is the amount of electricity generated in the fiscal year in question, assuming that all the solar power generation systems produced by Sharp over the 20-year period prior to the year in question are in operation by customers. The estimated amount of power generated in fiscal 2007 was 1,870 GWh, and this figure was calculated based on the formula below.

Estimated power = [1] power generated by solar power generation systems (manufactured over the past 20 years) X [2] annual insolation X (1 - [3] power conditioner losses) X (1 - [4] other losses)

Assumptions on Which Calculations Are Based
[1] Power generated by solar power generation systems: 1,780 MW
• Total amount of solar cells produced by Sharp from fiscal 1987 through 2006 (20 years)
[2] Annual insolation: 1,430.8 kWh/m²/year
• The amount of solar radiation measured when installed solar cells are tilted at an angle of 30° facing due south in Osaka (Japan), the location of Sharp's Head Office, as published in the National Mean Solar Radiation Data Map (NEDO).
[3] Power conditioner losses^*2:
• Assumed to be 10%.
[4] Other losses (losses due to temperature rise in solar cell elements, losses from wiring resistance and contamination on solar cell surfaces blocking light, etc.):
• Assumed to be approximately 19%.

*1 Calculated using the figure of 0.410 kg/kWh (for fiscal 2006) for CO2 emissions intensity (emissions per kWh of electricity consumed) announced by the Federation of Electric Power Companies of Japan.

*2 Power conditioners are devices to convert the DC power generated by solar cells to AC power.

Reduction in greenhouse gas emissions resulting from customer use of energy-saving products,

The reduction in greenhouse gas emissions was calculated based on reductions in power consumption in air conditioners, LCD TVs, and refrigerators shipped in Japan derived from the following formula and then using the conversion factor given in note 1 above (CO2 emissions intensity for fiscal 2006):
[Amount of reductions in power consumption] = ([average power consumption for representative models for fiscal 1997 (kWh)] - [power consumption for each model for fiscal 2007 (kWh)] X number of units sold for replacement purchase purposes for each model (units)