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.

FORBES: Magazine Article

Infineon also provides the thyristor chips that allow transformers to handle high-voltage direct-current power lines.

FORBES: Magazine Article

Traditional inverters gather power from all or most of the panels in an installation and use transformers, capacitors and switches to change it from direct current to alternating current.

FORBES: Inverters: Solar's Next Star?