Which of the following would indicate that a home is using solar power to generate electricity and is NOT using batteries?

A. There are solar panels on the roof and no power lines going to the home.
B. There are solar panels on the roof and power lines going to the home.
C. There are water pipes running to and from the solar panels on the home.
D. There are small plumes of smoke drifting away from the solar panels on the home.

A home using solar power and not relying on batteries would have solar panels on the roof and be connected to power lines. This indicates it's likely part of the grid and capable of selling back electricity. Other scenarios either suggest off-grid operation or the use of solar thermal systems, which are for heating.

Explanation:

Identifying Solar Power Sources

To determine whether a home is generating electricity using solar power and is not utilizing batteries, we need to examine the clues presented by the different scenarios:

There are solar panels on the roof and no power lines going to the home. This suggests that the home is completely off-grid.
There are solar panels on the roof and power lines going to the home. This indicates that the home may be connected to the grid and could be selling back electricity.
There are water pipes running to and from the solar panels on the home. This implies the use of solar thermal systems, which are for heating rather than electricity generation.
There are small plumes of smoke drifting away from the solar panels on the home. This would not be consistent with solar power generation, as it would indicate fossil fuel combustion rather than solar energy.

Therefore, the option that indicates a home is using solar power to generate electricity and is NOT using batteries is: There are solar panels on the roof and power lines going to the home.

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