Abstract: A system includes a control unit, a solar unit and a light unit. The control unit includes a main distribution box, a combustion engine electrical generator coupled to the main distribution box, and a first plurality of photovoltaic panels coupled to the main distribution box. The solar unit includes a second plurality of photovoltaic panels coupled to the main distribution box using a cable, and a first rechargeable battery unit coupled to a first battery inverter that is further coupled to the main distribution box. The light unit includes an array of area lights, a third plurality of photovoltaic panels, and a second rechargeable battery unit coupled to a second battery inverter.

Abstract: A system includes a control unit, a solar unit and a light unit. The control unit includes a main distribution box, a combustion engine electrical generator coupled to the main distribution box, and a first plurality of photovoltaic panels coupled to the main distribution box. The solar unit includes a second plurality of photovoltaic panels coupled to the main distribution box using a cable, and a first rechargeable battery unit coupled to a first battery inverter that is further coupled to the main distribution box. The light unit includes an array of area lights, a third plurality of photovoltaic panels, and a second rechargeable battery unit coupled to a second battery inverter.

Abstract: A fill level sensor and method are disclosed. The fill level sensor can take a pressure reading beneath a fluid level inside a closed tank. The sensor can also take a pressure reading above the field level or otherwise take the vapor pressure above the fluid info account. The measurements can be used to calculate the fluid level inside the tank. Also disclosed is a system for users to track a plurality of tanks and maintain records of fluid level or pressure within the tanks.