What is khan-skycard?

Khan Skycard is a custom card for Home Assistant, the open-source home automation platform, that displays a live energy flow diagram with a photographic sky background. It shows how power moves between your solar panels, battery storage, the electrical grid, and your home in real time, all overlaid on a background photo that changes automatically based on current weather conditions and the time of day. There are thirteen background images covering combinations like clear daytime, dawn, dusk, night, partly cloudy, overcast, rain, thunderstorm, snow, and fog. The card picks the right image by reading from a Home Assistant weather entity and tracking sun position. This card is a visual redesign of an earlier card called k-flow-card. The two share the same setup schema and configuration editor, but the sky edition replaces the dark SVG canvas of the original with the photographic background system and reworks every visual element. The sun is now a free-floating orb with atmospheric glow and color that shifts from horizon to zenith. The moon shows craters, earthshine, and limb brightening. The battery switched sides and uses an animated fill bar instead of a cylinder from a photo. Energy flow lines were rerouted to match the new layout. The card is delivered as a single JavaScript file with no build step and no external dependencies. Installation can be done through HACS, which is the standard Home Assistant community store for custom cards, or manually by copying the file into your Home Assistant config folder. The sky background images are not bundled and need to be placed in a specific folder separately, with filenames matching a documented naming convention. Configuration is done through a visual editor inside Home Assistant, covering solar panel inputs (up to four PV strings), battery data including temperature and cell voltages, grid import and export, house consumption, an optional secondary battery, an EV charger section, and more. Default sensor names in the configuration match a GoodWe inverter setup, but any sensors can be substituted. The project is in its own repository separate from the original k-flow-card it is based on.