Solar Panel Hourly Output and Home Usage for 31 May

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Student’s Name
School
Course Code
Course Title
Instructor’s Name
Due Date

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a) Weather data, solar panel hourly output and other data are provided for 31 May.
You should graphically present, analyze, evaluate the collected data, and provide
recommendations regarding battery management approach.
Table containing data for Powerwall output and home usage for 31 May
Table 1
Powerwall output home usage
4.7 8.2
Hourly graph of the data in the table 1 above.
Graph 1
4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
HOURLY USAGE
HOURLY USAGE
Linear (HOURLY
USAGE)
powerwall output(kwh)
Home usage(kwh)
Graph 1 above shows the Powerwall output and the hourly usage of the house.
My recommendation is that the solar panels power is matched with the power output of the
battery for compatibility during installation (Boxwell, 2010). The watts of the solar panels
should be almost the same with the battery output.
b) Based on average monthly irradiation data, estimate annual solar panel electricity
production.

3
The formula used to estimate the annual solar panel electric production is E = A x r x H x
PR; where A is the area, E is the energy, H is annual average solar radiation on tilted panels, PR
is performance ratio (default value is 0.75), and r is the yield
E =1.68 x 0.199 x 1000 x 0.75 =250.74 kwh
c) Based on the nominal panel efficiency and other details given in the datasheet,
calculate annual output over the useful life of the panel, as well as the cumulative
output.
The annual output of the panels is found by multiplying Average hours of sunlight by solar
panel watts and by 75%, which is the performance ratio.
5 x 335 x 0.75 = 1.256 kwh
d) Analyze the return on investment and wider financial implications of living lab
based on the total cost of components and installation of £17602.12.
The return of investment will be determined by the final value of this investment. For the
investment to show promise in the open market, the final value must be higher than the initial
amount of investment. The wider financial implication of the return on investments is that it will
determine the profitability of the stock investment and evaluate the results of the transactions.
e) Based on the characteristic’s curves in the data sheet, analyze MPP across the year
using average monthly irradiation data. Consider given temperature coefficients
and discuss how high cell temperatures affect the output