Commercial Design
Commercial Grade Solar Lights
Genuine commercial grade solar lights are specifically engineered and fully capable of delivering consistent full illumination from sunset to sunrise every day if required, in the most hostile of environments.
They are built to withstand the severe weather conditions, extreme temperatures, and prolonged exposure to harsh elements, ready for deployment in industrial, mining, military, and remote infrastructure applications where long-term reliability and durability are a definitive non-negotiable which qualifies them as truly Fit-For-Purpose.
Mass-produced one model type solar lights from Asia, make claims to be a commercial grade product. Unfortunately, they are actually made to a “residential grade standard”, and fall short in durability, long term reliability, warranty term, and capability of delivering consistent daily full illumination from sunset to sunrise. Ask them this question:
“Can your solar light run at full power all night consistently?”
Commercial Grade Requirements
Five key manufacturing requirements need to be met to ensure solar lights deliver reliability, long lifespan, and value for money:
Utilise the highest grade of componentry and raw materials.
Manufactured under ISO9001 & ISO14001 guidelines
Product certifications (IP, IK, LM-79, etc) through signatories of ILAC and APAC Mutual Recognition Arrangements certification.
10-year manufacturer warranty including battery, pole/stem.
4 nights of winter solstice battery autonomy “without” solar input.
Commercial Grade Solar Lights
Genuine commercial grade solar lights are specifically engineered and fully capable of delivering consistent full illumination from sunset to sunrise every day if required, in the most hostile of environments.
They are built to withstand the severe weather conditions, extreme temperatures, and prolonged exposure to harsh elements, ready for deployment in industrial, mining, military, and remote infrastructure applications where long-term reliability and durability are a definitive non-negotiable which qualifies them as truly Fit-For-Purpose.
Mass-produced one model type solar lights from Asia, make claims to be a commercial grade product. Unfortunately, they are actually made to a “residential grade standard”, and fall short in durability, long term reliability, warranty term, and capability of delivering consistent daily full illumination from sunset to sunrise. Ask them this question:
“Can your solar light run at full power all night consistently?”
Commercial Grade Requirements
Five key manufacturing requirements need to be met to ensure solar lights deliver reliability, long lifespan, and value for money:
Utilise the highest grade of componentry and raw materials.
Manufactured under ISO9001 & ISO14001 guidelines
Product certifications (IP, IK, LM-79, etc) through signatories of ILAC and APAC Mutual Recognition Arrangements certification.
10-year manufacturer warranty including battery, pole/stem.
4 nights of winter solstice battery autonomy “without” solar input.
Definitions
Fit for Purpose (FFP)
is defined as:
that a product is suitable and functional for the specific use it was intended for.
Real Battery Autonomy
is defined as:
the time during which the load can be met with the battery alone, without any solar inputs, starting from a “fully charged” battery state.
Depth of Discharge (DoD)
is defined as:
the battery depth of discharge never exceeds 80% of its total rated full capacity. Ensures a longer cycle life of the battery can be achieved.
FFP Design Formulas
Battery Autonomy
Minimum Pass (Taut): ≥ 4 nights
Note: Your Winter Solstice Night Hours (WSnh)
1. Battery Capacity (Ah) x Nom Voltage (V) = BWh
2. WSnh x Luminaire W = Etot (Wh)
3. Calculate BWh ÷ Etot = Taut (Nights)
Solar Oversupply Coefficient
Minimum Pass (fo): ≥ 1.3 (130%)
Note: 1kWh/m2 = 1 Peak Sun Hours (PSH)
1. Solar Panel W (Pstc) x Lowest Winter PSH = Epv
2. Calculate Epv ÷ Etot = fo
Definitions
Fit for Purpose (FFP)
is defined as:
that a product is suitable and functional for the specific use it was intended for.
Real Battery Autonomy
is defined as:
the time during which the load can be met with the battery alone, without any solar inputs, starting from a “fully charged” battery state.
Depth of Discharge (DoD)
is defined as:
the battery depth of discharge never exceeds 80% of its total rated full capacity. Ensures a longer cycle life of the battery can be achieved.
FFP Design Formulas
Battery Autonomy
Minimum Pass (Taut): ≥ 4 nights
Note: Your Winter Solstice Night Hours (WSnh)
1. Battery Capacity (Ah) x Nom Voltage (V) = BWh
2. WSnh x Luminaire W = Etot (Wh)
3. Calculate BWh ÷ Etot = Taut (Nights)
Solar Oversupply Coefficient
Minimum Pass (fo): ≥ 1.3 (130%)
Note: 1kWh/m2 = 1 Peak Sun Hours (PSH)
1. Solar Panel W (Pstc) x Lowest Winter PSH = Epv
2. Calculate Epv ÷ Etot = fo
Luminaire Testing
Buyers should be aware some manufacturers will make misleading claims about their luminaire Wattage or Total Lumen output.
To ensure the actual operating wattage or total lumens are correct to design the solar light power system, the seller through an accredited photometric laboratory undertake a LM-79 photometric test.
LM 79 is the Illuminating Engineering Society North America (IESNA) approved testing method to generate electrical and optical measurements of solid state lighting (LED) products. It was first used in the US Energy Star program in 2008 and has since become the international standard method for integrated LED & OLED products.
What is the LM-79 test methodology?
LM-79 prescribes the testing procedures and precautions including lab considerations, ambient conditions, electrical equipment and measurement equipment used for carrying out LED products testing.
Measurements are done using either Integrating Sphere or Goniophotometer systems. Proper orientation / test position & stabilization of the luminaire are key for obtaining accurate results.
Luminaire Testing Procedure
LM-79 testing procedure:
1. Power supply set to the solar system battery chemistry voltage.
2. Power supplied to the LED driver input first to then power the LED modules as when installed in-situ.
POWER INPUT DIAGRAM
NOTE: Power supplied directly to the LED modules will give a false wattage, current draw, and total lumen values.

