Solar receiver having back positioned header

A solar power installation comprising:

• a tower;
• a field of mirrors;
• and
• a solar receiver comprising:
• at least two receiver panels having a common outer front surface for receiving incident solar radiation from the field of mirrors;
• wherein at least one of the receiver panels comprises an array of side by side arranged heat exchange tubes;
• wherein said heat exchange tubes have a substantially straight main portion which extend in an upwards longitudinal direction and an inwards extending portion for a connection to an input or output header for respectively distributing or collecting fluid to or from the heat exchange tubes;
• wherein the tower supports the solar receiver at a height above the field of mirrors such that the header is at a vertical height V from the field of mirrors;
• wherein the header is at a horizontal distance H with respect to a most far positioned mirror of said field of mirrors;
• wherein said receiver panels are spaced apart in the upwards direction at a distance of Z cm;
• wherein the header is spaced behind the front surface at a distance of A cm;
• and
• wherein the quotient of Z and A, Z/A, at the most equals the quotient of a vertical V and a horizontal H distance, V/H.