Abstract: A utility-scale photovoltaic array composed of ground modules that have a contact region resting on the ground or a structure, with a three-dimensional region between the contact surface and the ground. The array includes connector systems between some modules that limit module movement, and the ground supports greater than 800 adjacent or conterminous modules that are flexibly joined in two dimensions. The array is capable of withstanding winds with speeds of greater than 150 mph (240 kph) and does not contain wind abatement stowing functionality or wind abatement extreme dampening functionality. The maximum height difference between adjacent modules is less than 4 inches, and the array comprises more than 10 rows and more than 10 columns of modules.

Abstract: Autonomous cleaning robot comprises rear cover and front cover 120. Robot 100 comprises Beale 130. Robot 100 uses two or more, three or more, for more, six or more, or eight or more wheels 130. The exemplar depicted in FIG. 1-a shows the robot with two brush assemblies 140, but the cleaning nature of robot 100 only requires a single brush assembly 140. Assembly 140 comprises brush 150 brush motor 160, and various other components that connect brush assembly 142 chassis of robot 100. Brush assembly 140 connects to the chassis of robot 100 and in some exemplars has two pieces a front chassis 230 and rear chassis 220. Brush motor 160 drives the rotation of brush 150 through a transmission 161.

Abstract: Utility-scale photovoltaic panels or modules for flat-on-ground mounting or mounting without a support structure between the module and the ground that have been adapted by including air vents or weep hole in a portion of the module frame. In operation, the vent holes allow air under the modules to escape if the module array is exposed to flooding. Letting under-module air to move through the weep holes lowers the buoyancy of the modules to prevent flood exposure from floating the modules. Also, weep holes or air vents allow air pressure equalization between the top surface of the module and the region under the PV module such as low pressures generated by heavy wind passing across the face of the array.