CIS Thin-Film Module
The Siemens ST5 solar (photovoltaic) module uses Siemens Solar´s industry-leading Copper Indium Diselenide (CIS) thin-film technology to efficiently create electricity from sunlight.
The ST5 performs efficiently in all operational conditions. Its distinctive ability to deliver battery-charge power levels in low-light situations makes it particularly effective for specialized applications and in adverse or changeable environments.
| Electrical Parameters (1) | Units of measure | Model: ST5 (12V) |
|---|---|---|
| Maximum power rating | Pmax [Watts] | 5 |
| Minimum power rating | Pmin [Watts] | 4.5 |
| Rated current | Imp [Amps] | 0.32 |
| Rated voltage | Vmp [Volts] | 15.6 |
| Short circuit current | Isc [Amps] | 0.37 |
| Open circuit voltage | Voc [Volts] | 21.0 |
| Thermal Parameters | ||
| Nominal operating cell temperature | [°C] | 47±2 |
| Temp. coefficient:short-circuit current | [°C] | .26mA/°C |
| Temp. coefficient:short-circuit voltage | [°C] | -0.1V/°C |
| Qualification Test Parameters | ||
| Temperature cycling range | [°C] | -40 to +85 |
| Humidity, freeze, damp heat condition | [Volts] | 25.0 |
| Wind loading or surface pressure | [N/m²] (PSF) | 2400 (50) |
| Maximum distortion | [degrees] | 1.2 |
| Hailstone impact withstand (diameter @ velocity) | [in @ mm] (MPH @ m/s) | 1.0 [25] 52 [v=23] |
| Weight | [kg] (lbs) | 3.0 [1.4] |
| Warranty (5) | ||
| Power >= 90% of minimum power | [Years] | 5 |
Siemens Solar ST5: Ultra-Compact CIS Module for Micro Off-Grid Applications
Siemens Solar’s ST5 module is an ultra-compact photovoltaic (PV) solution delivering a 5-watt power output, designed for micro off-grid applications such as trickle-charging small batteries, powering remote sensors, and supporting compact systems in specialized settings. As part of Siemens Solar’s ST-series, the ST5 leverages Copper Indium Diselenide (CIS) thin-film technology, offering efficiency in low-light conditions and a lightweight design ideal for portability. This article expands on the original ST5 page from our website, providing an in-depth guide to its technology, specifications, installation options, benefits, and real-world applications, showcasing Siemens Solar’s innovation in delivering sustainable power for the smallest energy needs.
The Emergence of Micro Off-Grid Solar
Micro off-grid solar modules, typically under 10 watts, have become essential for niche applications like environmental monitoring, telecom relays, and portable power, supporting the expansion of renewable energy into remote areas. The ST5, introduced as an early member of Siemens Solar’s ST-series, exemplifies this trend with its CIS technology, providing a reliable alternative to fuel-based power costing $20-$50 yearly for small setups.
Why the ST5?
- Micro Power: 5 watts for minimal energy requirements.
- Cost Savings: Saves $15-$40 yearly on fuel or battery costs.
- Sustainability: Reduces emissions by 0.05-0.1 tons per unit annually.
- Portability: Ultra-light for easy deployment.
Technology Overview
The ST5 features Siemens Solar’s CIS thin-film cells, a rugged laminate design with EVA encapsulation, and a compact form factor optimized for micro off-grid power generation.
Module Specifications
| Specification | Detail | Benefit |
|---|---|---|
| Power Output | 5 watts | Ideal for trickle-charging |
| Efficiency | 10-12% | Effective in low light |
| Size | 10” x 12” | Highly portable |
A single ST5 generates 8-12 kWh annually, powering small sensors, lights, or devices for 4-6 hours daily with a 0.5 kWh battery.
Installation Options
- Fixed Mount: On posts or small structures.
- Portable Setup: For RV or camping use.
- Vehicle Mount: On boats or mobile units.
Real-World Applications
Wilderness Monitoring
An ST5 powers a remote wildlife camera, saving $25 yearly on batteries.
Marine Signal
An ST5 supports a navigation buoy, cutting emissions by 0.07 tons annually.
Benefits
Saves $15-$40 yearly per unit, provides portable micro-power, and reduces environmental impact.
Future Vision
Siemens Solar plans to evolve CIS micro-modules like the ST5 with enhanced efficiency by 2030.
