Inverters and microinverters convert the direct current (DC) power produced by solar panels into alternating current (AC) used in homes and businesses.
Yet it's scarcely visible in the market for solar panel inverters, devices that turn the direct current power generated by solar panels into alternating current for the grid.
High-voltage DC can carry power over long distances at lower cost than alternating current, but the transformers still cost too much to make the idea widespread.