Kind of. Free satellite data starts at 10m resolution per pixel. You will not get a clear signal on small rooftop solar. Same for balcony solar or other near perpendicular installations.
At 10m the only thing you can reliably detect is large scale deployments. If you want to do better than that you need paid data which is prohibitively expensive at large scales.
At 10m the only thing you can reliably detect is large scale deployments. If you want to do better than that you need paid data which is prohibitively expensive at large scales.