An array of photovoltaic panels comprising a plurality of primary branches extending radially outwardly from a central trunk, and a plurality of photovoltaic panels joined to the primary branches, wherein the primary branches extend outwardly from the trunk in a spiral arrangement having a ratio of x turns around the trunk for every y primary branches. The ratio of x:y may be derived from a phyllotaxic arrangement of branches and leaves on a plant. X may be a Fibonacci number, with y being its Fibonacci second successor. The ratio of x/y may be selected from certain Fibonacci ratios, including 1/3, 2/5, 3/8, and 5/13. A method of converting electromagnetic radiation to electrical energy, and a method of making a device for converting electromagnetic radiation to electrical energy in accordance with the invention are also disclosed.