The comparison would be for locally produced solar. We know that making solar panels on Earth is a net positive energy expenditure, from raw materials to recycl

The comparison would be for locally produced solar. We know that making solar panels on Earth is a net positive energy expenditure, from raw materials to recycle/disposal, and just barely so. But the cost of creation of solar panels on Mars is unknown relative to net energy expenditure. I'm fairly certain that it would be many decades, if not centuries, before it became net positive. Sending solar panels to Mars is obviously not a good use of Watts.