A photovoltaic device is provided. The photovoltaic device includes a photovoltaic cell array absorbing solar voltaic energy to convert the solar voltaic energy to electrical energy, and a sensing unit sensing at least any one of power generation information for representing a state of the photovoltaic device and environmental information for representing environmental information around the photovoltaic device, and measuring a time when the at least one of the power generation information and the environmental information is sensed.