Why the other options are wrong:

• Because they reduce the need for roof repairs.: Roof repairs are not discussed as a reason for choosing microinverters.
• Because they are cheaper than a central inverter.: The installer says microinverters cost a bit more, not less, than a central inverter.
• Because they are required by the City of Red Deer.: The City of Red Deer does not require a specific inverter type in this conversation.

Correct Answer: The amount of household electricity they can cover.

Why this is correct: The installer says a 6 kW system would cover about 70 percent of the homeowner's electricity usage, while an 8 kW system would cover closer to 90 percent. The main difference is how much of the household power bill each system can offset.

Why the other options are wrong:

• The time required for installation.: Installation time is not mentioned as different between the two sizes.
• The length of the panel warranty.: The installer states a general warranty without identifying a different warranty as the reason to choose the 8 kilowatt system.
• The type of inverter that must be used.: Both systems would use microinverters, so the inverter type is the same.

Correct Answer: Installation and city permits.

Why this is correct: The installer says the prices include installation and permits from the City of Red Deer. These two items are part of the quoted cost for both the 6 kW and 8 kW systems. The homeowner does not need to budget separately for them.

Why the other options are wrong:

• Tree removal and roof reinforcement.: The installer lists installation and city permits in the prices, without listing tree removal or roof work.
• Battery storage for winter use.: Battery storage is not mentioned at all in the conversation.
• Long-term maintenance visits.: Maintenance visits are not listed among the quoted price inclusions; the installer describes maintenance as minimal.

Correct Answer: Snow buildup in winter.

Why this is correct: The homeowner says she is concerned about winter because they get a lot of snow in Red Deer. She worries about how snow might affect the solar panels. The installer reassures her that panels are tilted so snow slides off and annual output already accounts for winter losses.

Why the other options are wrong:

• Strong winds damaging panels.: Wind damage is not mentioned as a concern by the homeowner.
• High summer temperatures.: High summer temperatures are not raised as a worry.
• Limited daylight hours.: Limited daylight hours are not specifically discussed as her concern.

Correct Answer: She is likely to choose the smaller system for now.

Why this is correct: The homeowner says she needs to think about her budget but is leaning toward the smaller system. The installer agrees this is a sensible starting point and mentions she can expand later. This strongly suggests she will choose the 6 kW system for now.

Why the other options are wrong:

• She has decided not to install solar at all.: She has not decided against solar; she is leaning toward the smaller option.
• She will wait until new rebates are announced.: She does not say she is waiting for new rebates to be announced.
• She plans to install the largest system possible.: She specifically leans toward the smaller system, not the largest one.

Correct Answer: There will be a waiting period for permits and approvals.

Why this is correct: The installer says the process from signing the contract to turning the system on takes six to eight weeks. This time includes engineering, permits, and utility approval. A waiting period for these steps is a necessary part of the installation process.

Why the other options are wrong:

• She must replace her roof before signing a contract.: Replacing her roof is not mentioned as a requirement before going solar.
• The panels will be installed the same week.: The installer estimates six to eight weeks through engineering, permits and utility approval. A physical installation in the same week is not promised.
• She will need to apply directly to FortisAlberta first.: Applying directly to FortisAlberta is not described as a required first step.