In general, in one aspect, the disclosure describes an apparatus to enable direct injection of DC power from a renewable power source (e.g., solar) into an electronic device (e.g., computer). The DC power from the renewable source is injected into the electronic device on the DC side of a power supply used to provide power thereto. The DC power is injected into a tap that is installed between the power supply and a system board using the DC power. The apparatus may include a voltage regulator that converts the DC power to a DC voltage associated with the electronic device. The set point of the voltage regulator may be on the high side of the voltage range of the electronic device so that power is preferentially provided by the renewable source with additional power being provided by the power supply. Other embodiments are described and claimed.