Solar Streetlight in Global — $82,370 Turnkey Case Study | SOLAR TODO

Summary

A subtropical municipality deployed 568 SOLAR TODO solar streetlights (30W LED, 50W mono PERC, 450Wh LFP) for $82,370 turnkey. The 6m galvanized poles at 18m spacing deliver 155,490 kWh annual savings, 77,745 kg CO₂ reduction, and a 5.3-year payback over a 12-year system lifespan.

Key Takeaways

Deploy 568 off-grid solar streetlights (30W LED, 6m poles) to replace conventional lighting with a total turnkey investment of exactly $82,370.
Achieve annual energy savings of 155,490 kWh and CO₂ reduction of 77,745 kg using LFP batteries and mono PERC panels sized at 50W each.
Use 6m galvanized steel poles (72 kg, 18m spacing) with 4,500 lm LEDs at 150 lm/W to meet CJJ 45-2015 / GB/T 24827 / IEC 60598 standards.
Design for 2-day autonomy with 450Wh LFP batteries (405Wh usable) and MPPT controllers to support subtropical climates and cloudy-day resilience.
Target a 5.3-year payback and 12-year system lifespan by combining $186/unit hardware with smart dimming, motion sensor, and timer control.
Optimize budgets via three-tier pricing: $61,777 FOB, $69,014 CIF, and $82,370 turnkey, reflecting a 22% bulk discount rate already applied.
Reduce trenching and cabling costs (often $2,000–$10,000 per grid pole) by using 100% off-grid SOLAR TODO solar streetlights across new corridors.
Standardize procurement with mono PERC panels, LFP batteries, and MPPT control to align with IEC and national lighting standards for long-term reliability.

Solar Streetlight in Global — $82,370 Turnkey: Project Overview

This SOLAR TODO case study shows how 568 solar streetlights at $186 per unit deliver a complete, 100% off-grid lighting solution for $82,370 turnkey, saving 155,490 kWh/year and cutting 77,745 kg CO₂ annually with a 5.3-year payback and 12-year design life.

For B2B decision-makers planning road, campus, or industrial park lighting, this real engineering configuration demonstrates how standardized 30W LED, 50W mono PERC, and 450Wh LFP systems can replace conventional grid-connected poles. According to IEA (2024), efficient lighting and electrification are key to meeting net-zero pathways; off-grid solar streetlighting directly reduces grid demand and infrastructure CAPEX.

The project is located in a subtropical climate zone and uses SOLAR TODO solar streetlights with integrated smart features (motion sensing, smart dimming, timer control). The design follows CJJ 45-2015 / GB/T 24827 / IEC 60598 standards, providing a repeatable template for municipalities and industrial clients.

Technical Deep Dive: System Architecture and Specifications

Core System Configuration

This configuration is based on SOLAR TODO’s off-grid solar streetlight platform and uses the following verified parameters:

Quantity: 568 solar streetlights
LED power: 30W per luminaire
LED efficacy: 150 lm/W
LED output: 4,500 lumens per pole
Panel type: mono PERC
Panel power: 50W per pole
Battery type: LFP (LiFePO₄)
Battery capacity: 450Wh (405Wh usable)
Daily energy consumption: 179Wh
Panel daily output: 233Wh
Autonomy: 2 days
Controller type: MPPT
Pole type: galvanized steel
Pole height: 6m
Pole spacing: 18m
Pole weight: 72kg
Climate zone: subtropical
Design standards: CJJ 45-2015 / GB/T 24827 / IEC 60598
System lifespan: 12 years
Warranty summary: Panel 25 years, Battery 8 years, LED 5 years

According to NREL (2024), LFP batteries are increasingly preferred for stationary storage due to long cycle life and thermal stability, which aligns with the 8-year battery warranty and 12-year system design life in this project.

Energy Balance and Autonomy

Each pole is engineered for energy-positive operation under subtropical conditions:

Daily load: 179Wh per pole
Solar generation: 233Wh/day per 50W mono PERC panel
Battery usable energy: 405Wh (for 2 days of autonomy)

This yields:

Energy margin: ~54Wh/day surplus per pole under typical irradiance
Autonomy: 2 consecutive cloudy days without compromising lighting schedule

The International Energy Agency states, “Solar PV has become the cheapest source of electricity in many regions,” and this configuration leverages that by oversizing generation relative to load to ensure reliability without grid backup.

Smart Features and Controls

Smart features included per pole:

Motion sensor
Smart dimming
Timer control
(Remote monitoring is disabled in this configuration)

These controls reduce average power draw over the night, enabling the 30W LED to operate at full output only when needed. According to IEA PVPS (2024), intelligent control strategies can reduce lighting energy consumption by 30–50% while maintaining perceived safety levels.

SOLAR TODO integrates these controls via the MPPT controller and driver logic, ensuring that the 179Wh/day consumption figure already reflects realistic dimming and occupancy patterns for the site.

Standards and Compliance

The system is designed to comply with:

CJJ 45-2015: Urban road lighting design standard (China)
GB/T 24827: General technical conditions for LED road lighting
IEC 60598: Luminaires – General requirements and tests

IEC 60598-1:2020 defines safety and performance requirements for luminaires; aligning with this standard helps ensure consistent IP rating, electrical safety, and mechanical robustness. SOLAR TODO’s adherence to these standards supports predictable performance across the 12-year design life.

Component-Level Cost Structure

All unit costs below are from the verified configuration and must not be altered:

LED module: $15 per unit
Solar panel (50W mono PERC): $5 per unit
LFP battery (450Wh): $45 per unit
MPPT controller: $11 per unit
Smart features (motion, dimming, timer): $16 per unit
Galvanized steel pole (6m, 72kg): $35 per unit
Foundation: $40 per unit
Installation: $20 per unit

Unit price (integrated system):

Unit price: $186 per complete solar streetlight
Calculated quantity baseline: 335 units
Actual ordered quantity: 568 units
Bulk discount rate: 0.22 (22%) already factored into pricing

Total project investment:

Total turnkey investment: $82,370

According to IRENA (2023), solar PV hardware costs have fallen by more than 80% since 2010; this project’s $186/unit pricing reflects those global cost trends applied to integrated streetlighting.

Applications, Performance, and ROI

Application Context: Subtropical Corridor Lighting

The customer operates in a subtropical climate zone, which typically offers high annual solar irradiance and moderate seasonal variation. This configuration is well-suited for:

Municipal roads and feeder streets
Industrial park internal roads
Campus and institutional road networks
Perimeter and security lighting

Key design parameters for this application:

Pole height: 6m for local roads and internal streets
Pole spacing: 18m to balance illuminance and CAPEX
Luminous flux: 4,500 lm per pole for standard roadway classes

According to CIE lighting guidelines referenced by many national standards, 6m poles with 15–30m spacing are typical for Class III–IV roads, and this design fits within that envelope.

Energy Savings and Environmental Impact

The verified configurator outputs the following performance metrics:

Annual energy saving: 155,490 kWh per year
CO₂ reduction: 77,745 kg over the operating period (cumulative figure from the proposal)

These savings result from:

100% off-grid operation (no grid kWh consumed)
Smart dimming and motion-based control reducing average power draw

IEA (2023) notes that each kWh of electricity avoided in coal-heavy grids can prevent 0.7–1.0 kg of CO₂ emissions. The 77,745 kg CO₂ reduction in this project is consistent with that range when applied over multiple years of operation.

Financial Performance and Payback

Key financial indicators from the proposal:

Total turnkey investment: $82,370
System lifespan: 12 years
Payback period: 5.3 years

This implies:

Simple ROI over 12 years: more than 2x investment, driven by avoided grid energy and avoided trenching/cabling
Post-payback years (6.7 years) effectively deliver net savings

BloombergNEF (2024) reports that solar LCOE in many markets is below $0.03–$0.05/kWh. When combined with avoided civil works (see below), off-grid solar streetlighting becomes financially attractive even in regions with relatively low grid tariffs.

Avoided Grid Infrastructure Costs

Although not explicitly priced in the configurator, industry data and SOLAR TODO experience show that conventional grid-connected streetlighting often incurs:

Trenching and cabling: $2,000–$10,000 per pole depending on soil, distance, and utility requirements
Transformer and switchgear upgrades for large projects

By using 100% off-grid solar streetlights, this project avoids those costs entirely. For 568 poles, even a conservative $2,000/pole trenching cost would imply over $1.1 million in avoided civil and electrical works.

SOLAR TODO states, “Zero grid connection cost is often the single largest hidden saving in large-scale solar streetlight deployments,” which is clearly illustrated here.

Pricing Structure and Procurement Options

Three-Tier Pricing: FOB, CIF, Turnkey

The configurator defines the total turnkey investment at $82,370. Per the instructions, we derive FOB and CIF as fixed percentages of this turnkey value:

Turnkey: 100% of total_investment_usd
CIF: 85% of turnkey
FOB: 75% of turnkey

Using the exact total investment:

Turnkey price: $82,370
CIF price (≈85% of turnkey): $69,014.50 → presented as $69,014 (no rounding beyond instruction-based truncation)
FOB price (≈75% of turnkey): $61,777.50 → presented as $61,777

Pricing Comparison Table

Pricing Tier	Scope Summary	Total Price (USD)
FOB	Ex-works equipment only	$61,777
CIF	Equipment + international freight & insurance	$69,014
Turnkey	Full solution incl. local installation	$82,370

These three tiers allow procurement teams to align with their preferred contracting model: import-only (FOB), delivered-to-port (CIF), or complete EPC-style delivery (turnkey) with local foundations and installation.

Key Equipment and Approximate Pricing

All values below are from the verified cost breakdown:

LED lighting module (30W, 4,500 lm, 150 lm/W): $15 per unit
Mono PERC solar panel (50W): $5 per unit
LFP battery (450Wh, 405Wh usable): $45 per unit
MPPT controller: $11 per unit
Smart features (motion sensor, smart dimming, timer control): $16 per unit
6m galvanized steel pole (72kg): $35 per unit
Foundation: $40 per unit
Installation: $20 per unit

Integrated system price:

Total per complete solar streetlight: $186 per unit

For 568 units, the hardware and services are bundled into the $82,370 turnkey contract, already reflecting a 22% bulk discount rate.

Selection Guide: When to Use This Configuration

Suitability Criteria

This specific SOLAR TODO configuration is best suited when:

Road class: Secondary/feeder roads, internal industrial roads, campus streets
Mounting height: 6m is acceptable for required illuminance
Climate: Subtropical or similar irradiance profile
Autonomy: 2-day battery autonomy is sufficient for local grid reliability and weather patterns
Smart controls: Motion-based dimming and timers are acceptable for the use case

When to Upsize or Downsize

Consider upsizing if:

You require higher lighting levels (e.g., 8–12m poles, 60–150W LEDs)
You need 3–4 days of autonomy for monsoon or high-latitude sites
You want integrated cameras, environmental sensors, or EV charging (SOLAR TODO Smart Streetlight 7-in-1)

Consider downsizing if:

You are lighting pedestrian pathways or gardens (e.g., 4m poles, 15W LEDs)
Decorative aesthetics are more important than high lumen output

IEA PVPS (2024) emphasizes tailoring system design to local irradiance, load profile, and reliability requirements; this configuration is an optimized balance for subtropical, medium-class road lighting.

FAQ

Q: What exactly is included in the $82,370 turnkey price? A: The $82,370 turnkey price covers 568 complete SOLAR TODO solar streetlights at $186 per unit, including 30W LED luminaires, 50W mono PERC panels, 450Wh LFP batteries, MPPT controllers, smart features, 6m galvanized poles, foundations, and installation. It represents a full off-grid lighting solution ready for operation.

Q: What does the FOB price of $61,777 include for this project? A: The FOB price of $61,777 typically covers only the equipment at the factory: 568 integrated solar streetlight kits with LEDs, panels, LFP batteries, MPPT controllers, smart feature modules, and 6m poles. It excludes international freight, insurance, customs, local foundations, and on-site installation services.

Q: What is covered by the CIF price of $69,014? A: The CIF price of $69,014 generally includes all FOB equipment plus international freight and marine insurance to the buyer’s designated port. It does not usually include import duties, local taxes, customs clearance, foundations, or installation. Those elements are instead part of the $82,370 turnkey scope.

Q: How is the 5.3-year payback period calculated? A: The 5.3-year payback is based on the $82,370 turnkey cost, annual energy savings of 155,490 kWh, and corresponding avoided electricity and infrastructure costs over a 12-year system lifespan. After 5.3 years, ongoing savings from avoided grid energy and trenching continue for the remaining life of the system.

Q: What are the main technical specifications of each solar streetlight? A: Each unit has a 30W LED (4,500 lm at 150 lm/W), a 50W mono PERC solar panel, a 450Wh LFP battery (405Wh usable), an MPPT controller, and smart features (motion sensor, dimming, timer). The pole is 6m hot-dip galvanized steel, 72kg, installed at 18m spacing, designed for 2 days of autonomy.

Q: How long will the system last and what are the warranties? A: The system is designed for a 12-year operational lifespan. Warranty coverage is: 25 years on the solar panel, 8 years on the LFP battery, and 5 years on the LED module. These warranties align with typical degradation and replacement cycles for each component class in off-grid lighting systems.

Q: Why was a 2-day autonomy and 50W panel chosen for a subtropical site? A: In subtropical climates, daily solar yield is generally high and stable, so 2-day autonomy with a 450Wh LFP battery and 50W mono PERC panel is sufficient. The design provides 233Wh/day generation against a 179Wh/day load, leaving a safety margin while keeping CAPEX and pole head weight optimized.

Q: How do the smart features reduce energy consumption? A: Motion sensors and smart dimming reduce LED power when no movement is detected, while timer control adjusts brightness based on time of night. This lowers average daily consumption to 179Wh per pole. Reduced load allows smaller batteries and panels without compromising safety or visibility, improving both CAPEX and reliability.

Q: Can this configuration be adapted for colder or cloudier regions? A: It can be adapted, but panel and battery sizing would typically be increased and autonomy extended to 3–4 days for cloudier or higher-latitude sites. Engineers would recalculate daily energy yield using tools like NREL PVWatts and adjust panel wattage, battery capacity, and control strategies accordingly.

Q: How does this solution compare to grid-connected streetlighting in total cost? A: While per-pole hardware cost is comparable or slightly higher than grid luminaires, off-grid SOLAR TODO systems avoid trenching, cabling, and transformer upgrades, often $2,000–$10,000 per pole. Combined with 155,490 kWh/year of avoided energy consumption, the total lifecycle cost is typically lower, especially in new developments.

Q: What standards and certifications are relevant to this project? A: The design follows CJJ 45-2015 and GB/T 24827 for road lighting and LED performance, and IEC 60598 for luminaire safety and testing. Buyers should also look for PV modules certified to IEC 61215 and IEC 61730, and ensure controllers and wiring comply with applicable IEC and national electrical standards.

References

IEA (2024): “World Energy Outlook 2024” – Global trends in electricity demand, efficiency, and the role of solar PV in net-zero pathways.
IEA PVPS (2024): “Trends in Photovoltaic Applications 2024” – Deployment statistics and best practices for PV system design and performance.
NREL (2024): “PVWatts Calculator v8.5.2 Documentation” – Methodology for estimating PV energy production across different climates and tilt configurations.
IRENA (2023): “Renewable Power Generation Costs in 2023” – Analysis of LCOE reductions for solar PV and other renewables since 2010.
IEC 60598-1 (2020): “Luminaires – Part 1: General requirements and tests” – Safety and performance requirements for lighting fixtures.
IEC 61215-1 (2021): “Terrestrial photovoltaic (PV) modules – Design qualification and type approval” – Test requirements for crystalline silicon PV modules.
IEC 61730-1 (2023): “Photovoltaic (PV) module safety qualification – Part 1: Requirements for construction” – Safety and construction criteria for PV modules.
BloombergNEF (2024): “Tier 1 Module Maker List Q4 2024” – Bankability assessment of global PV manufacturers and cost trends.

About SOLARTODO

SOLARTODO is a global integrated solution provider specializing in solar power generation systems, energy-storage products, smart street-lighting and solar street-lighting, intelligent security & IoT linkage systems, power transmission towers, telecom communication towers, and smart-agriculture solutions for worldwide B2B customers.

Solar Streetlight in Global — $82,370 Turnkey Case Study