Modern rovers just use RTGs and avoid the problem all together. Ingenuity couldn't and had to use solar panels but was mostly planned as a test craft so the acc

Modern rovers just use RTGs and avoid the problem all together. Ingenuity couldn't and had to use solar panels but was mostly planned as a test craft so the accumulation problem would happen long after it achieved it's mission goals so it wouldn't cause a mission failure. All of the rovers start with a fairly small mission and it gets extended as it provides good science and congress/NASA finds money to continue to staff the support teams and get time on the Deep Space Network.