Renewable Energy Sources (RES) such as Solar
Photovoltaic (PV) became more popular over the last decade due
to increasing environmental awareness and tax exemption
policies on the solar PV systems. Integration of solar PV using
various smart load management techniques will boost the
efficiency of the overall system by reducing the massive cost of
electricity bills. There is a need to find efficient and expert ways to
enjoy these RES exclusively. Besides providing the connection
between different loads, this system has the ability to collect
information and execute control commands for the households by
providing continuous observations and information about both
load and supply profile, convincing the end user to take preventive
measures by switching the auxiliary load to save power. This
paper presents implementation of a low cost Solar based DC grid
using Arduino. In the proposed system, the node which acts as a
microcontroller reads the power consumption by the loads in each
unit through current sensor. When the excess amount of power is
consumed at particular unit, the controller makes the relay cut off
the supply to the loads, which will be continuously displayed
through LCD. This DC based power system helps to eliminate the
requirement of converters systems, reducing converter cost, power
system complexity, improve efficiency and reliability.