## 1 Introduction
The installation site is illustrated in Figure 1.  
The solar window design type was derived from the previous transparent solar window designs, multiple prototype models of which have been developed by Edith Cowan University (ECU) and Clearvue Technologies over several recent years and were trialed in 2017 at a grid-independent bus stop in Melbourne [22]. Several engineering features related to the glazing system structure, window size, system packaging-related details, and solar modules circuitry implementation have changed since these were reported originally [22], improving the peak-rated electric power output of transparent solar windows towards 30 W\({}_{\text{p}}\)/m\({}^{2}\), measured at standard test conditions (STC) using the manufacturer-sourced large-scale flash-lamp PV testing equipment. The core design and assembly-related features of solar windows remained almost the same, and included the triple-glazed structure, low-iron glass plates, low-emissivity heat-mirror coating, and particles of high Stokes-shift inorganic luminescent materials embedded into a lamination interlayer. More technical details are available from [23; 24; 25; 26], whist the general system design philosophy has been derived from the approaches reported throughout the last several decades in [27; 28; 29; 30], and in references therein. This present study represents, to the best of our knowledge, a world-first report on the field performance characteristics and practical application potential of high-transparency, clear glass-based solar windows built using all-inorganic functional materials, in built environments where the windows are mounted in multiple geometric orientations. The following sections of this article provide the installation-specific microgrid configuration details, the results of preliminary microgrid modelling, and the results of a case study of the energy harvesting efficiency conducted over May-June 2019. Additional datasets extending the system monitoring results until early September 2019 are presented within the Supplementary data file (Table S1 and multiple additional Worksheets within the file). We then summarize the data and main results, providing an outlook for the future application potential of transparent solar windows, and propose some new future application areas. System Design Features, Methodologies of Energy Harvesting Performance Assessment, and Principal Results  
Each of the 18 solar windows, factory-assembled at Qingdao Rocky Technical Glass Co., Ltd. (Qingdao, China) have been re-tested following their shipment to Perth, in outdoor morning sunlight conditions, confirming stable operation and the expected power outputs. Approximately (27 \(\pm\) 1) W of electric output has been obtained from each window at close to their optimal geometric orientation and tilt angles towards the incoming natural sunlight, and at solar module surfaces being at > 37 \({}^{\circ}\)C. The weather conditions in mid-April in Perth (at the time of testing) were typical for autumn, and without strong UV irradiation background (likely at UV index near 5, out of the yearly maximum  
Figure 1: Entrance porch (atrium) of Warwick Grove Shopping Centre in Warwick (Perth, WA, Australia) constructed using 18 solar windows supplied by Clearvue Technologies Ltd. (Perth, WA, Australia). (**a**) front view and (**b**) top view, with the inset showing satellite image of the same entrance atrium structure prior to solar windows installation. The site orientation-related data are also shown; the roof sides are tilted at \(\approx\) 37\({}^{\circ}\) from horizontal plane. of 12 [31]). The typical measured output parameters from each window were as follows: Open-circuit voltage V\({}_{\text{oc}}\) = 58.85V, short-circuit current I\({}_{\text{sc}}\) = 0.723 A, and Fill Factor FF = 0.639. The maximum power point (MPP) parameters corresponded to V\({}_{\text{MPP}}\) = 49.5 V and I\({}_{\text{MPP}}\) = 0.55 A.