The business of solar street lighting assembly has progressed enormously since 2008. Numerous solar companies have emerged as solar lighting specialists, yet how might you tell whether a solar street lamp supplier is a company you can actually depend on? Choosing among the many solar street lamp suppliers in the market today is not always easy, especially when every website claims to offer the best product at the best price.
The following 5 facts will help customers ask the right questions when picking the solar street lamp suppliers they can rely on for a long term project.
1. What light fixture is being recommended with the solar assembly?
Many manufacturers build lighting fixtures, but only a chosen few are truly the best in the industry. For instance, Hubbell, a brand that DEL, one of the trusted solar street lamp suppliers, pairs with its own solar assembly, is amongst the greatest names in this business. This is a light fixture you can depend on because it comes from a lighting company with real experience. Practically all Hubbell fixtures carry a 100K hour life expectancy, which works out to roughly 22 years of dusk to dawn operation, far longer than many other options on the market. Always do your due diligence on the solar street lamp suppliers before making a purchase, and ask directly which fixture brand they pair with their solar assembly.
2. What lighting distributions do they have available?
Road lights typically use a Type II or Type III distribution, however not every situation is the same. Perhaps you need a Type V rectangular distribution because you are placing a single light in a small courtyard or parking area. Do the other solar road light manufacturers you are comparing offer this kind of distribution option?
Distribution patterns allow for project specific lighting and can vary from project to project. Several distribution categories can even be used within a single project, even along one roadway. Depending on the number of medians, lanes, walkways, and other features along a thoroughfare, the distribution pattern should be set individually for each light rather than oversimplified for the whole project. This ensures the lighting coverage is complete and does not leave drivers or pedestrians in the dark. This is exactly the kind of detail that separates dependable solar street lamp suppliers from the rest.
3. Do they provide a photometric design showing how much lighting will fall below the fixture and how far the light will reach?
This question matters because a fixture can show 5 foot candles directly underneath the light but almost no light at 20 feet away from it. Many companies will boast about their brightness rating, yet instead of even illumination across a wide area, you may only get isolated pools of light. This also increases the number of fixtures required to evenly light a stretch of roadway.
That is where the light distribution comes in handy, since you want a strong distribution across a wide area and not just a single spot. Even brightness also gives better visibility and reduces eye strain for drivers, which is a genuine safety benefit when installing any kind of road lighting. Confirm these photometric details with the solar street lamp suppliers beforehand to make the comparison process much easier.
4. How many nights of battery backup are they proposing?
Several solar street lamp suppliers offer only 2 to 3 nights of battery backup, which is actually a weak solar system design. Nature does not just give you a day or two of bad weather occasionally, it can hand you several cloudy days in a row with very little sun. This shortfall also causes batteries to over discharge, which raises breakdown rates and increases maintenance and replacement costs.
Providing at least 5 nights of storage for most regions, with extra storage for colder climates, will reduce operating and maintenance costs over time. The depth of discharge of a battery greatly affects its lifespan, and keeping the depth of discharge at 20 percent or less can keep the battery cycles at 3000 or more, while simply raising the depth of discharge to 30 percent daily can cut those cycles in half. Having only two to three days of storage generally means you will need to replace the battery every year or two, which is a real cost to factor in when comparing solar street lamp suppliers.
5. What warranty coverage and helpline support do they offer?
The warranty on a solar powered road light system is significant. A one year warranty on the system does not guarantee the system will even make it to a year. The system itself might only cost a few thousand dollars, but if you need to replace it every year or two, it could end up costing you far more over just a few years of operation. Choosing a system built to last around 25 years or more will reduce overall project costs significantly, not just in the first year, but for many years to come.
How does the helpline respond when there is an issue? Do they stand behind their product and answer your questions promptly, or do they go quiet once the purchase is complete? Ask the solar street lamp suppliers you are considering for real customer references before you commit.
How to Compare Solar Street Lamp Suppliers Before You Buy
Beyond the five facts above, it helps to look at a few practical extras when you are shortlisting solar street lamp suppliers for a real project. Ask for a sample photometric report, request the datasheet for the LED chip and driver, and check whether the company offers different fixture options such as the All In One Solar Street Light or the All In Two Solar Street Light, since project requirements can vary a lot from site to site. It is also worth browsing a full solar street light catalogue so you can compare wattage, pole height, and battery options side by side before you contact any solar street lamp suppliers for a quote.
If you already have a project in mind, take a look at past installation projects to see how a supplier’s fixtures perform in the field, and review their service offering to understand what support looks like after installation.
Solar Street Lamp Suppliers: Conclusion
Anyone can offer a service, but there is a real difference between a service that is simply advertised and one that is actually backed by trust in the product. Check the facts consistently, and remember that DEL will support your solar lighting needs from the first quote, through installation, and with service calls for years to come. Among solar street lamp suppliers, DEL consistently aims to exceed customer expectations and provide assistance exactly when you need it most.
Frequently Asked Questions
1. How do I know if solar street lamp suppliers are reliable?
Look at how long the company has been operating, ask which fixture brand they pair with their solar assembly, and request references from past projects. Reliable solar street lamp suppliers are usually happy to share photometric reports, warranty terms, and real customer contacts without hesitation.
2. How many days of battery backup should solar street lamp suppliers offer?
Most reputable solar street lamp suppliers recommend at least 5 nights of battery backup for typical regions, with additional storage for colder or cloudier climates. Anything less than 3 nights usually points to a weak system design that will need frequent battery replacement.
3. What warranty length should I expect from solar street lamp suppliers?
A strong warranty from solar street lamp suppliers typically covers 5 years or more, with a system lifespan closer to 25 years being the real goal. A short one year warranty is often a warning sign that the product may not hold up long term.
4. Why does photometric design matter when comparing solar street lamp suppliers?
A photometric design shows exactly how far and how evenly the light spreads from each fixture. Without it, solar street lamp suppliers can advertise a high brightness rating that only lights a small spot, leaving the rest of the roadway or walkway dim.
5. What is the difference between All In One and All In Two solar street lights from solar street lamp suppliers?
An All In One design integrates the panel, battery, and LED into a single unit, which is simpler to install, while an All In Two design separates the battery from the fixture for easier maintenance. Good solar street lamp suppliers will help you choose based on your site conditions and budget.