(a)
Interpretation:
The area of solar panel needed to meet the average critical needs of a residence in each city should be calculated.
Concept Introduction:
The area of panel can be calculated using the following formula:
Here, A is area of panel, E is energy used and IE is incident energy.
(b)
Interpretation:
In each city, the current average annual cost of electricity should be calculated.
Concept Introduction:
The average annual cost can be calculated from average cost of electricity and annual electricity used as follows:
(c)
Interpretation:
The future increases in electricity prices offset the cost of borrowing funds for the initial purchase should be determined.
Concept Introduction:
The cost per square meter can be calculated from average cost for 20 years and incident energy as follows:
Here, C is cost per square meter,
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