Final answer:
The customer generated 164 kilowatt hours of electricity that they didn't use themselves, calculated by dividing the credit of -$4.10 by the credit rate of $0.025 per kilowatt hour.
Step-by-step explanation:
To calculate the number of kilowatt hours generated that they didn't use themselves, we can use the credit information provided by the electricity company. Since the electricity company credits $0.025 for every kilowatt hour of electricity a customer with a solar panel generates and doesn't use, and the customer has a credit of -$4.10, we can divide the credit amount by the credit rate per kilowatt hour to find the number of kilowatt hours generated:
Number of kilowatt hours = Credit amount / Credit rate per kilowatt hour.
Inserting the values we have:
Number of kilowatt hours = (-$4.10) / $0.025 per kWh
Number of kilowatt hours = 164 kWh.
Therefore, the customer generated 164 kilowatt hours that they didn't use themselves.