Compare the true 5-year and 10-year cost of solar versus grid-powered LED street lighting, including product, installation, trenching, electricity, and maintenance.
When planning a street lighting project, choosing between solar-powered and grid-connected LED lights is a critical decision that affects both upfront costs and long-term operating expenses. Our TCO calculator helps you compare the total cost of ownership over 5 and 10 year periods, taking into account product cost, installation, electricity, maintenance, and battery replacement.
Grid-connected street lights typically have lower product costs but require expensive trenching and cabling for electrical connections. Solar street lights have higher upfront product costs but eliminate trenching, electrical permits, and grid connection fees. For projects spanning more than 50 units, the installation savings of solar can offset the higher product cost within the first year.
Grid lights incur ongoing electricity costs that increase with energy rates. Solar lights have zero electricity costs but require battery replacement every 5-8 years. LiFePO4 batteries used in modern solar street lights offer 2000+ charge cycles, providing reliable performance for 5-7 years before replacement. The calculator includes battery replacement cycles in the 10-year cost projection.
Solar street lights produce zero direct CO2 emissions during operation. Grid-connected LED lights, while energy-efficient, still draw power from the electrical grid which may include fossil fuel sources. Our calculator shows the CO2 reduction achieved by choosing solar over grid power, helping you quantify the environmental benefit for sustainability reporting.
To find the right solar street light models for your project, use our Solar Street Light Sizing Calculator or browse our Solar Street Light Products Catalog with 26 models across 5 series.
Adjust your project parameters to see a real-time cost comparison between solar and grid-powered LED street lights.
Grid lights require trenching for underground cables. Solar lights need zero trenching.
When solar becomes cheaper than grid (break-even point highlighted)
| Cost Component | Solar Street Light | Grid LED Street Light | Difference |
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Solar and grid lighting each have optimal use cases. Here is how to decide.
Beyond cost savings, solar street lighting eliminates grid electricity emissions
Based on 0.707 kg CO2 per kWh of grid electricity avoided
Total grid power that solar lights replace over the project lifespan
One tree absorbs approximately 21 kg of CO2 per year
Common questions about solar vs grid street lighting costs
Solar street lighting has a higher initial cost but lower total cost of ownership over 5-10 years. Solar lights eliminate electricity bills and trenching costs, which can save 30-50% over a 10-year period. The break-even point is typically 3-5 years depending on local electricity rates and installation costs.
The payback period for solar street lights compared to grid-powered lights is typically 3-5 years. This depends on local electricity rates, trenching costs for grid installation, and the number of units. In areas with high electricity rates or expensive grid connection costs, solar can pay back in as little as 2 years.
Trenching for grid-powered street lights typically costs $15-50 per meter depending on soil conditions, urban vs rural location, and existing infrastructure. For a 30-meter pole spacing, trenching alone can add $450-1,500 per pole. Solar street lights require zero trenching, which is one of the largest cost advantages.
LiFePO4 batteries in solar street lights typically need replacement every 6-8 years, costing approximately 25-30% of the original product price. Over a 10-year period, this means one battery replacement. Grid lights may need LED driver or bulb replacement every 5 years at similar cost.
Yes, modern solar street lights with LiFePO4 batteries and MPPT controllers can run 2-5 days autonomously without sunlight. In areas with frequent cloudy weather, larger battery capacities (like the LFT or LKA series) can provide up to 5 days backup. Solar panels also generate power in diffuse light conditions, though at reduced efficiency.
Browse our 26 solar street light models or get a custom TCO analysis for your project location.
Check our complete installation guide for pole height, foundation depth, panel angle, and wiring specs.
