Solar LED Street Lights ROI Analysis
Author: source: Datetime: 2016-05-06 14:40:12
When we talk about the Return On Investment(ROI)Analysis, I think most of us just consider the finance terms, think about how long and how much money we can make from the initial investment. But for solar LED street lights, as green products, not only think about the finance ROI but also environment ROI.
Solar LED street lights system consist of solar panel, solar battery, solar street light controller, led street lamp and pole, while grid-tied street lights just be led lamps and poles, the higher upfront capacity costs of solar street lights make some customers hesitate to choose, while they may offset by the obviously lower costs of installation compared to grid-tied street lights considering the trenching costs, cables costs and junction boxes, ect.
When we prepare the 10-years operating cost analysis of solar led street lights with gird-tied street lights, we are so excited to find out we also save much costs in 10-year operating of solar street lights compared to grid-tied street lights. Read the following 10-year operating cost form:
Take 60W solar LED street lights for example
|Component||Lifespan||Units||Replacement Cost||Maintenance||Labor Cost||10-year operating Cost Estimate|
|120Ah battery||5-7 years||2||$300/unit||replace 5-7 years||$100||$700|
|150W panel||20+ years||2||N/A||N/A||N/A||N/A|
|Solar Controller||5-7 years||1||$60/unit||replace 5-7 years||together with battery||$60|
10-year operating cost estimate
Current grid-tied street light electric cost
|10-year operating cost savings||$2840|
This is standard example for comparison, while every user, every district may be vary.
According to the statistics, One solar led street lights saves about 1 ton of CO2 per year compared to traditional street light, and the average CO2 emission from a vehicle is about 4.8 ton one year, Meaning that the savings in CO2 emissions from 5 solar street lights is equivalent to taking 1 vehicle off the road. Imagine that one country, like USA, about 34 million street lights, how can impact the national level.
As now, higher solar panel efficiency, higher capacity and longer cycle li-ion battery, higher charging solar street light controller, brightness and energy consumption LED lamps, make the solar led street lights save much more overall costs and realize the real green products.