The Solar Electric Light Fund (SELF) is announcing that a case study about its successful installation of 29 kilowatts of off-grid photovoltaic (PV) systems to provide electricity to the Thomonde Hospital in Haiti is available online from Trojan Battery Company. The system uses 126 PV modules and 48 Trojan batteries to power the hospital’s lighting, lab equipment, refrigeration, computers, and satellite communications system 24 hours a day, to help improve the quality of medical services provided to the community.
Prior to using solar power, the hospital, operated by the international medical organization Partners In Health, was meeting its energy needs through the use of a diesel generator that had a limited run-time, was expensive to operate, and was often rendered inoperable due to fuel source disruptions. The electricity generated by the solar system can provide nearly all of the energy the hospital needs, but the generator is being retained to provide back-up or emergency power when needed.
Solar power can provide all of the electricity needed by facilities like this, but only if all of the systemâ’s components can effectively perform at very high levels over many years,says Bob Freling, executive director, SELF. We coupled the Trojan batteries with solar modules made by SolarWorld, and a charge controller and inverters from OutBack Power Technologies, all of which were in-kind contributions towards the project. Our goal is to implement the best systems possible to provide the greatest benefits to the communities they operate in.
Trojan Battery’s Premium line of flooded deep-cycle batteries is specifically designed to be cycled regularly and engineered to perform optimally under conditions where the batteries are not fully charged or discharged every day, a common occurrence in renewable energy applications,states Bryan Godber, VP of Renewable Energy, Trojan Battery Company.
To maximize the long-term power and performance of the system, SELF trained hospital staff to meet any immediate onsite servicing needs, and uses an Internet-based software monitoring system to remotely track the PV array’s voltage and output, the inverter output, and the charge levels of the batteries.
Additional details from the full case study can be found at: http://www.trojanbatteryre.com/PDF/RE_CS_Thomonde%20Hospital.pdf.