Energy‎ > ‎

Solar Panels in Different Light

posted Apr 10, 2016, 5:08 PM by Tony Farley   [ updated Apr 14, 2016, 2:05 PM ]

Today we will explore solar panels in different brightnesses of light. 
Find the voltage across all 3 panels in Covered, inside classroom light, outside shade, and direct sun.

Graph your results using Google Sheets. A bar chart is best because you don't have x axis data, just use the words darkness, room lighting, shade, and direct sun along the x-axis.



Put all of your data and graphs on a Google Doc. Don't turn it in, you are going to add to this document tomorrow. You may work in groups of no more than 3.

Next day



1. Find the voltage across 2 small panels connected in series in the sun (or cloudy like it is today) Connect the red wire of one to the black wire of the other like in the picture.

3. Find the voltage across 3 small panels connected in series.

4. How many small panels does it take to match the voltage of a medium panel in the same light?

5. Find the voltage across two medium panels in series.

6. How many medium panels does it take to match the voltage of a large panel?

7. Voltage is only part of the story, each panels is labeled with its voltage, amperage, and power in Watts at maximum output. Find the maximum Watts our school's panels have put out on a sunny day. You need to find Max AC Power Produced. Remember kW means 1000Watts.

Go to https://www.sunpowermonitor.com/partner/partner.aspx#

Login with Username tfarley@slusd.us
and Password:Sunpower123

What is the maximum you found?

8. What's the Wattage rating on the large panel?

9. How many large solar panels does it take to make that much power?

10. The power of a panel is found by multiplying the voltage by the Amperage. P = VxA Find the power of a small panel. Remember that mA is milliamp. 1/1000 Amp.  How many small panels would it take to equal the power of one of the large panels?