Yes, you can charge a laptop with a solar panel. In fact, laptops are one of the easiest devices to power with solar because they have lower power consumption needs. How much energy consumption your laptop needs will depend on the size and type of your laptop. You can use an online solar calculator to determine how much power your laptop needs and then compare that to the different types and sizes of solar panels that are available. A single solar panel can typically generate around 100 watts of power. This is enough to charge a laptop, but it will take longer than if you were plugged into the wall.