SOLAR STREET Lighting

Solar Street Lighting

Effective outdoor lighting is proven to enhance safety, comfort, education,
commercial prosperity, and socialization. Without access to electricity, nearly 1.6
billion people representing 30% of the world’s population do not have reliable
outdoor lighting. Increasing demand for electricity for other uses and scarcity of
resources for investment in costly power generation has further added barriers to
providing light, especially in Africa. One proven solution to this problem is to provide
reliable bright lighting through solar powered outdoor lights.

 

 

Components Modelling
Panel Efficiencies
Solar panel efficiency (defined as the percentage of power converted from
absorbed light to electrical energy) is one of the most important considerations in
solar LED lighting technology. The performance and capability of the entire system
depends upon the energy collected from the panel.
There are three types of solar panels:
• Mono-crystalline: 14-19% efficient
• Polycrystalline: 10-14 % efficient
• Thin Film: 5-11 % efficien

Batteries

The use of batteries in solar LED systems (including charging, discharging, voltage and
temperature) are all monitored and controlled via the energy management system
(EMS). The depth of discharge a battery experiences is determined by the way the
solar LED lighting system is configured. Factors include the lumen output of the system,
the location of the system, and the operating profile the system is running. It is critical
that system modeling take battery depth of discharge into account to preserve
battery health and lifespan and to ensure system performance over the long term

  • Changing Relationships with Public Utilities
  • Minimal Environmental Impact
  •  Easy to install and use
  • Requires low maintenance cost compared to other sources
  •  Its cost effective in the long run
  • Flexibility allows it to be installed anywhere regardless of the geographical issues

EMS Charger
The EMS charger is designed to transfer as much power as possible from the solar
panel to the batteries. Using Maximum Power Point Tracking (MPPT) and Temperature
Compensated Maximum Power Point Tracking, the charger monitors and optimizes
power transfer to ensure the system is collecting as much available energy as
possible.
The charger also supplies battery power to the rest of the system and provides
protection from accidental reverse polarity connections between the solar panel and
batteries.
Benefits of Streetlight System 

  • Changing Relationships with Public Utilities
  • Minimal Environmental Impact
  •  Easy to install and use
  • Requires low maintenance cost compared to other sources
  •  Its cost effective in the long run
  • Flexibility allows it to be installed anywhere regardless of the geographical issues