Noordeinde Palace will be the first Grade I monument to have solar panels. A special commission of monumental experts has investigated the situation, after remarks by the King he would love to take sustainable steps but regulations were a blockade.
The commisssion found out that Noordeinde Palace has opportunities to have non-visible solar panels, with respect for the monumental status. For Huis ten Bosch, the King's other palace in The Hague, the commission saw no possibilities for solar panels without deforming the monumental character of the 17th C palace.
This aerial shows that the large extension of 1814-1817 (attached to this 17th C inner city palace) indeed has flat rooftops, helping to place solar panels with respect for the monumental view: https://di262mgurvkjm.cloudfront.net...42_xgaplus.jpg
This is the extension of 1814-1817: http://www.paleizen.nl/Paleizenbesta...0met%20hek.jpg