Power over ethernet has historically been used to power VOIP telephony equipment, but recent advances have increased the amount of power that these systems can carry - up to 90 watts per ethernet cable - and added the option of bidirectional power. This allows for lighting, computers, chargers, building automation, climate control and other devices to be powered via safe, efficient power over ethernet systems. This takes building automation, monitoring controls and efficiency improvements to the next level, as every power draw in an office is also a high throughput data port. But the real building efficiency advancement is unlocked when these systems are paired with batteries and solar - in the form of solar window products, PV blinds, or even direct integration of rooftop systems. Injecting DC solar power directly into efficient DC microgrids, without inverter or power adapter losses can result in up to 30% reduction in lost power, resulting in the next generation of efficient buildings.