Methods for mapping power generation installations

A method comprising:

• estimating a pairwise distance or a range of possible distances between a plurality of components of a photovoltaic (PV) installation,
• receiving a first map indicating locations of the plurality of components of the PV installation,
• matching, based on the estimating a pairwise distance or a range of possible distances between a plurality of components, the plurality of components to locations on the first map;
• and
• generating, based on the matching, a second map of the PV installation indicating identifying information and locations of the plurality of components.

A method comprising:

• commanding a power first device having output terminals to change an output electrical parameter,
• receiving output parameters reported by a plurality of power devices;
• and
• determining, by analyzing the output parameters, which power devices of the plurality of power devices are serially coupled to the first power device.