Japan's Kyocera provides solar LED lighting for Rio de Janeiro

Japanese electronics company Kyocera has partnered with a Brazilian engineering company to provide solar-powered lighting for a 73-kilometer road project in Rio de Janeiro funded by local authorities.

Kyocera has provided more than 4,300 solar street lights for the 3.2MW DC project and is expected to generate approximately 2.8GWh of photovoltaic power per year. Each streetlight kit includes a 150W LED light, three Kyocera KD250 solar modules, a controller, a photocell (photosensor), a bracket structure, and four 240Ah/12Vcc lead-acid batteries.

Local engineering company Soter has installed lighting in Arco Metropolitano do Rio de Janeiro over the past two years, a project linking five of Rio's major roads, starting in 2009. According to Kyocera's statement, one of the main objectives of the infrastructure project is to help stimulate economic development in the region by reducing import and export costs. The Kyocera-Soter project will cover about half of the total distance of the road network of 145 roads.

Sergio Beninca, president of Kyocera Solar do Brasil, said the streetlight project underscores the company's commitment to "a solar solution that is helpful in rural areas." Beninca continues to say that the project is independent of the grid and will help local, low-income households not exceed the burden of their existing power grid. Kyocera established an office in Brazil in the mid-1970s.

A Kyocera spokesperson said in an interview with PV-Tech that the lighting solution uses lead-acid batteries supplied by Johnson and Moura. These batteries are connected directly to the controller and store the generated solar energy during the day. Once the photocell detects a drop in light level, it needs to turn on the LED light.

According to the spokesperson, the system can store power and illuminate for three days without sunlight. In addition, the spokesperson said that unlike more intensive off-grid solar energy storage applications, lighting equipment will not require supplemental power supplies such as diesel, but use "100% solar energy stored in batteries."

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