Solar panels do cause glare for neighbours, for the short amount of time each day that your array’s angle and their property line up.
However, solar panels are covered in anti-reflective coating that limits glare, so the effect won’t be too extreme.
And since windows reflect light all the time – and no-one would ask a neighbour to get rid of their windows – you usually won’t receive any complaints.
Black solar panels cause the least glare for neighbours, as they reflect the least amount of light of any solar panel.