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1. Cost Comparison
Solar streetlight projects benefit from long-term investment due to their simple installation, which leads to minimal maintenance costs and expensive utility expenses. The costs can be recovered within 6-7 years, and over one million yuan can be saved in utility and maintenance costs within 3-4 years.
The electricity and water costs of traditional streetlights are high due to complex wiring, which requires long-term and continuous maintenance. In cases of short circuits, sodium lights are prone to damage, and as time progresses, the brittleness of the wiring and maintenance expenses increase annually.
2. Safety Comparison
Solar streetlights are ideal for ecological communities and road units as they operate at a basic voltage of 12-24V, ensuring stable voltage and reliable operation without safety hazards.
The safety risks associated with traditional streetlights are significant. Changes in natural environments, such as food, clothing, housing, and transportation, along with road renovations, landscaping projects, power system anomalies, and the construction of water and fuel pipelines, can lead to numerous safety hazards.
3. Environmental Protection Comparison
Solar streetlights offer a new selling point for the development, design, and marketing of high-end ecological communities. Sustainability reduces the costs of property management services and lowers the shared costs of public resources among community owners. In summary, solar lighting has no safety hazards, is environmentally friendly, energy-saving, non-consumable, low-carbon, and easy to install, with a maintenance-free automatic control system, providing clear and applicable advantages for market sales of new buildings and basic construction of municipal road projects.
The lifespan of solar lights is significantly longer than that of traditional electrical lighting. For example, the key component of solar lights—the solar panel—has a lifespan of 25 years. Low-pressure sodium lights last about 18,000 hours, whereas efficient triphosphor energy-saving bulbs last around 6,000 hours. LEDs have a lifespan of approximately 50,000 hours; dedicated solar power batteries have a lifespan of 38AH for 2-5 years and 38-150 hours for 3-7 years. According to the requirements of the local price bureau regarding the maintenance fees for streetlights in residential areas, which are a one-time deduction of 6 yuan per square meter of total building area, the initial investment for conventional lighting is much higher than that for solar lighting. In other words, the investment savings associated with solar lights are highly evident.
In solar power distribution systems, the performance of batteries directly impacts overall system costs, operational effectiveness, and lifespan. This proposal features the latest advancements developed in collaboration with the Institute of Metal Research, Chinese Academy of Sciences. Compared to conventional lead-acid batteries, the storage technology of gel batteries has the following advantages in design and manufacturing processes:
Long lifespan, typically 5-10 years.
The selection of appropriate aluminum alloy for both the positive and negative terminals and specific chemical formulations makes the batteries more suitable for the charging and discharging characteristics of power battery systems.
The design of the gel electrolyte substantially inhibits rusting of specific chemicals and the sulfonization of the electrode plates, thereby slowing the degradation of outdoor solar streetlight batteries throughout their use. The lifespan of rechargeable batteries in deep charge-discharge cycles is greatly extended.
