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Depending on the geographic latitude of where they are being used, vertical solar panels can potentially capture a wider range of angles throughout the day, which can increase energy production as opposed to fixed horizontal panels. Vertically mounted solar panels can provide identical to slightly improved solar conversion efficiency in winter months when compared to horizontal solar panels that are conventionally mounted with a tilt angle ranging from latitude to latitude + 15 degrees.

Vertical flexible solar panels can be shaped and arranged in segmented columns to maximize solar energy capture as the sun follows its daily and seasonal arc-like path. Higher solar energy capture can be achieved at lower solar elevations during morning and late afternoon-evening illumination when compared to conventional solar panels. Vertical flexible solar panels can also be curved and mounted on the full length of the pole to provide a lower wind profile compared to large, flat, pole-top-mounted horizontal panels. Such vertical mounting can be highly advantageous in areas prone to strong winds.

Solar panels produce maximum energy when operating under direct sunlight. Shading on solar panels will reduce energy production, however, a 10% shading of vertical flexible solar panels using CIGS (Copper Indium Gallium deSelenide) thin-film technology will reduce energy production by 10 to 20%, while conventional silicone-based crystalline solar panels will see a 60-80% reduction.

Flexible solar panels using CIGS (Copper Indium Gallium deSelenide) thin film technology are highly durable and offer a 5-year workmanship and 25-year power loss warranty.

Cold temperatures can slow down the charging process and reduce how efficiently the batteries recharge and deliver power. A heated lithium iron phosphate battery can use energy from both the battery and the solar panels to maintain a temperature suitable for optimal battery performance. Heating the battery allows it to recharge on sunny days when the outdoor temperature is below freezing, which is typically prohibited to avoid damage in non-heated lithium iron phosphate batteries.

Lithium iron phosphate batteries can provide over 5000 charge-discharge cycles at 80% DOD (Depth of Discharge) while AGM/GEL batteries typically provide only 800 cycles at 50% DOD. When used in solar lighting applications, lithium iron phosphate batteries can provide up to a theoretical 30-year service life while AGM/GEL batteries usually need to be replaced every 4.5 years.

For the same voltage and operating capacity, heated lithium iron phosphate batteries occupy 66% of the volume and are only 37% of the weight of AGM/GEL type batteries, making them easier to work with, especially in remote or challenging locations.

There is no adjustment of the tilt angle of the flexible vertical solar panels, however, they are radially segmented in columns so that the solar energy capture from each column is optimized as the sun follows its daily and seasonal arc-like path.

Yes, the heating process does take away from the captured solar and stored energy, but the batteries perform much better than if they were operating in the cold. For a nominal 25.6V, 100AH lithium iron phosphate battery with a 25mm thermal jacket, the heating process requires approximately 0.7W for each degree C below 0, which translates into a 24-hour capacity de-rating of 12% at -12 °C and 29% at -32 °C. Conventional AGM/GEL type lead-acid based batteries have a capacity derating of approximately 20% at 0 °C and 50% at -30 °C.

No. The lamps mount on any standard concrete base anchor bolt pattern. The installation requires no trenching, no wiring, and in most cases no permitting.

The flexible vertical solar panels are radially segmented into columns, with each column-arc independently controlled using a maximum power point tracking algorithm. The energy production from each column is optimized as the sun follows its daily and seasonal arc-like path, thereby creating angular solar tracking using stationary panels.

The energy storage capacity of both lithium iron phosphate and AGM/GEL batteries falls significantly when the temperature drops below freezing. Lithium iron phosphate batteries cannot be charged below freezing without incurring damage. Heated lithium iron phosphate batteries can use energy from both the battery and the solar panels to maintain the battery temperature above freezing and fully utilize their energy storage capacity. This can increase the lamp’s overall energy efficiency by allowing more solar energy to be captured and utilized for longer lamp illumination at night.

The lamps are equipped with a controller that utilizes an integrated LED driver to provide a constant current to the LED lamp. The lamp brightness is varied by adjusting the amount of current to the lamp which is set according to a pre-programmed schedule that can include dusk to dawn, 5 interval night mode, timed delay after sunset, and timed ON before dawn modes of operation. A motion detection option is also available that can trigger the lamp to change brightness levels for a defined period on detection of motion. A cellular-based IoT control option is also available to allow for the remote control, schedule adjustment, and monitoring of the lamp.

The total cost of ownership of off-grid solar-powered lamps with heated lithium iron phosphate batteries can be on par with, if not lower than, that of traditional outdoor lighting solutions. The initial purchase cost of components for off-grid solar lighting lamps will be higher than traditional outdoor lighting solutions, however, the full cost of ownership needs to be considered. Factors such as permitting costs, trenching requirements, cabling, utility hookup fees, and electricity charges over the life of the lamp can make the real cost of traditional outdoor lighting solutions more expensive than off-grid solar lighting lamps. ESG credits and government rebates through green energy initiatives may also provide significant cost savings when comparing off-grid solar lighting lamps to traditional outdoor lighting solutions.

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