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Cost Comparison Tool

Solar vs Grid Street Light TCO Calculator

Compare estimated 5- and 10-year costs for solar and grid-powered street lights, including equipment, installation, electricity, and maintenance.

Initial Investment Electricity Cost Trenching & Wiring Battery Replacement Break-even Point

Solar vs Grid Street Light Cost Comparison

Enter the local equipment, civil-work, and energy costs for both options. The comparison is most useful when the two layouts provide equivalent lighting.

Initial Investment Comparison

Solar can avoid a new electrical supply and long cable trenches. It still needs foundations and any required permits. Grid lighting may cost less where suitable power infrastructure already exists.

Long-Term Operating Costs

Include battery replacement and access labour in the solar budget. For grid lighting, include electricity and expected driver or lamp maintenance. Use the supplier’s proposed service intervals for both.

Environmental Impact

The emissions comparison covers avoided grid electricity during operation. It does not include manufacture, transport, batteries, or disposal. Use a current local grid factor for 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.

Zero Electricity
Solar saves 100% power cost
3-5 Year Payback
Break-even vs grid lighting
No Trenching
Save $450-1,500 per pole
CO2 Reduction
0.707 kg per kWh saved

Total Cost of Ownership Calculator

Adjust your project parameters to see a real-time cost comparison between solar and grid-powered LED street lights.

Project Parameters

50
60 W
12 h
$0.15
10 years
$25/m

Grid lights require trenching for underground cables. Solar lights need zero trenching.

30 m
Solar Street Light
$0
10-Year Total Cost
Grid LED Street Light
$0
10-Year Total Cost
Solar Saves You
$0
0% less than grid Payback in 0 years

Cost Breakdown Comparison

Solar: Initial Investment $0
Grid: Initial Investment $0
Solar: Operating Cost $0
Grid: Operating Cost $0

Cumulative Cost Over Time

When solar becomes cheaper than grid (break-even point highlighted)

Solar Grid

Detailed Cost Breakdown

Cost Component Solar Street Light Grid LED Street Light Difference

When to Choose Solar vs Grid

Compare these site conditions before choosing a power source.

Choose Solar When

  • No existing grid infrastructure or connection is expensive
  • Project is in a remote, rural, or off-grid location
  • Electricity rates are high (above $0.15/kWh)
  • Roads need trenching through pavement or landscaping
  • A new grid connection or extensive cable trench would delay the project
  • Sustainability and CO2 reduction are project goals

Choose Grid When

  • Existing grid infrastructure is already in place
  • Electricity rates are very low (below $0.08/kWh)
  • Lighting is needed for more than 14 hours per day
  • Very high wattage requirements (above 200W per pole)
  • Location has very limited sunlight (less than 3 peak sun hours)
  • Initial budget is the primary constraint over long-term cost

Environmental Impact Comparison

Estimate operational emissions from the grid electricity avoided.

0 kg
CO2 saved over project life

Illustrative grid factor: 0.707 kg CO2/kWh; replace with a current regional factor for reporting.

0 kWh
Electricity eliminated

Total grid power that solar lights replace over the project lifespan

0
Trees equivalent

One tree absorbs approximately 21 kg of CO2 per year

Frequently Asked Questions

Common questions about solar vs grid street lighting costs

Is solar street lighting cheaper than grid-powered lighting?

Either option can have the lower total cost. Solar may save on grid connection and cable installation; grid lighting may cost less where infrastructure is already in place. Compare local quotes over the same period.

What is the payback period for solar street lights?

The break-even point depends on the difference in installed cost and annual operating expenses. Use site-specific quotes and battery-replacement assumptions rather than a standard payback range.

How much does trenching cost for grid street lights?

Obtain a civil-work quote that covers trench length, reinstatement, permits, and site conditions. Solar can avoid power-cable trenching, but foundations and other civil works remain.

How often do solar street light batteries need replacement?

Use the battery supplier’s expected replacement interval under the proposed temperature and cycling conditions. Include parts, access, labour, and disposal in the cost.

Do solar street lights work in cloudy or rainy weather?

Backup duration depends on usable battery capacity and the nightly load. Ask the supplier to show the energy calculation for the required cloudy-weather period, including seasonal solar conditions.

Planning Your Solar Street Light Installation?

Check our complete installation guide for pole height, foundation depth, panel angle, and wiring specs.

Read Guide
From guidance to action

Put this guidance into a project plan.

Send the models you are considering, quantities, finish, and destination. We can help check the specification and prepare a quote.