A photovoltaic panel with an efficiency of 19% receives an average insolation equal to the average worldwide average insolation on a horizontal surface. This panel is used with an appropriate storage system ( $100 \%$ efficient) to meet the average household electricity requirements (no electric heat) presented in Chapter 2 .
(a) What is the required area of the panel?
(b) What is the annual savings in $\mathrm { CO } _ { 2 }$ emissions compared to the same amount of electricity supplied by $40 \%$ efficient coal fired generating stations?

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The Answer of A photovoltaic panel with an efficiency of 19% receives an average insolation equal to the average worldwide average insolation on a horizontal surface. This panel is used with an appropriate storage system ( $100 \%$ efficient) to meet the average household electricity requirements (no electric heat) presented in Chapter 2 .
(a) What is the required area of the panel?
(b) What is the annual savings in $\mathrm { CO } _ { 2 }$ emissions compared to the same amount of electricity supplied by $40 \%$ efficient coal fired generating stations?

A Photovoltaic Panel with an Efficiency of 19% Receives an Average