Constraints and Criteria

Constraints

• Panels cannot significantly impact crop productivity
• Produce enough energy to justify cost of system
• Able to be replicated (implementable in other areas)
• Materials must be accessible in Guatemala

Criteria

• 10 feet (about 3 m) of clearance underneath the structure
• System needs to fit within proposed site of 0.75 acres
• Connect system to grid and install battery storage

Standards

• IEEE 1562:2007 Solar Sizing - This standard outlines how to size a PV system and batteries where the solar array is the only charging source, and is not connected to the electric grid. It outlines that the minimum battery autonomy for areas with high insolation should be 5-7 days.
• IEC 62548:2016 PV Arrays - This standard outlines design safety requirements for installing PV arrays. It includes requirements for array wiring and electrical protection devices.
• IEC 62257 Recommendations for small renewable energy and hybrid systems for rural electrification - This standard helps determine the correct renewable energy system for a rural location, helps design and implement the system, and explains how to operate and maintain the system.
• NEC 70 Article 690 Solar photovoltaic systems - This standard outlines different PV system requirements regarding system components, circuits, and wiring
• NEC 70 Article 706 Energy storage systems - This standard discusses requirements for energy storage systems (ESS) for PV systems

References

IEC. (n.d.-b). IEC 62548:2016 | IEC Webstore | solar panel, photovoltaic, PV, solar power, rural electrification, LVDC. Retrieved November 17, 2019, from https://webstore.iec.ch/publication/25949

IEC. (2002). IEC TS 62257 Series RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION. Retrieved from https://www.iec.ch/affiliates/pdf/forum/2012_tc82_jwg1.pdf

SunWize. (n.d.). Solar Sizing - IEEE 1562:2007. Retrieved November 17, 2019, from https://www.sunwize.com/wp-content/uploads/2017/08/SunWize-Tech-Notes-IEEE-1562-2007.pdf

U.S. National Electrical Code. (2014). Article 690—Solar Photovoltaic Systems, 623–638. Retrieved from http://ieeexplore.ieee.org/document/6221990/

Wages, J. (n.d.). Energy storage systems–NEC Article 706 - IAEI Magazine. Retrieved May 7, 2020, from https://iaeimagazine.org/magazine/features/renewables/energy-storage-systems-nec-article-706/