Electrical: technical, bright, calculators instead of walls of text
This draft works with a bright, cool-grey grid, a copper accent and a plain typeface without ornament. Rather than long descriptions, eight fields of work lead into sections of their own, with a filter sorting them by occasion. Two calculators take over the explaining: one estimates system size from consumption, the other shows which charging power fits the time available. The fault section deliberately sits apart so it can be reached in two steps, even from a cellar.