Photovoltiac generation is an intriguing alternative power source for pressurized irrigation system pumps. Two different on-farm power generation applications using photovoltaic panel systems have been identified: (a) grid-tied, where pumping power consumption is offset on annual basis, and (b) off-grid, with a sole-sourced, direct connection to a solar generation facility. The authors recently reviewed multiple proposed system designs for both grid-tied and off-grid photovoltaic generation system applications. The reviews resulted in several key findings: (a) that some vendors marketing on-farm photovoltaic systems for irrigation pumps are unwilling or incapable of producing potential generation performance, (b) several key photovoltaic design considerations can impact subsequent operation of the irrigation system, and (c) preliminary design guidelines have been developed. This paper presents an overview of the available options and the results of the proposed design reviews. A discussion of engineering guidelines and key considerations will also be provided for the design and integration of photovoltaic generation systems with pressurized on-farm irrigation systems.
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