Power to Produce - TEG Hybrid

Power generation for off-grid sites can be challenging for companies requiring reliable power for critical applications.

Off-grid solar/photovoltaic (PV) systems are often deployed in remote locations when tying into the grid is not practical. Providing a clean source of energy, off-grid solar systems are relatively simple to design and implement. Furthermore, decreasing costs for this technology has made PV systems more and more economical for remote applications. However, these systems face several challenges.

Once installed, off-grid PV systems can face challenges in extreme weather conditions. Due to the weather-dependent nature of power generation for an off-grid PV system, unfavorable weather can cause system downtime. In northern climates, snow accumulation on PV panels can lead to low or zero energy production. Shading by neighboring objects, such as trees, can limit power production, particularly in northern latitudes where the sun tends to be lower in the sky during winter months. Higher operational costs can result for snow removal or cleaning of dust and debris from solar panels.

Battery life is also a challenge in cold environments. Consistent deep-cycle charging damages the batteries and decreases their life. This increases the frequency for replacement and can be as often as once or twice per year.

Thermoelectric Generators (TEG) are an ideal companion to off-grid PV systems for remote applications. A TEG connected directly to the existing PV/battery system can float-charge the batteries while maintaining the electrical load, when solar energy is insufficient, such as short winter days or when cloud cover or inclement weather affects solar power generation. TEGs run efficiently in any environment and don’t rely on available daily sunlight or batteries for power generation.

The ideal fuel source used to run the TEG is Natural Gas sourced from local utilities (e.g., pipeline or gas wellhead). Alternatively, if natural gas is unavailable, tanked propane can be used. To conserve fuel, the TEG can start and run automatically only when battery charge levels become low, providing reliable remote power delivery while recharging the battery simultaneously. TEGs can also be remotely started and stopped, if required.

A TEG, PV array, battery, and controller can be sized to optimize fuel consumption, costs and environmental footprint. An optimized TEG-PV Hybrid system provides a smaller footprint compared to a pure PV system, due to smaller battery bank requirements and less solar redundancy.

TEG-PV hybrid systems decrease downtime, reduce operational costs, extend battery life and eliminate the need for frequent site visits. To learn more about TEG Hybrid systems, and how they can benefit your business, contact Gentherm Global Power Technologies today at (403) 236-5556 or via email at gptsales@gentherm.com.

Gentherm Global Power Technologies*(GPT)  Remote power products are designed for a minimum 20-year service life.

  • check marks GPT solutions are known for their ability to operate reliably in any environment.
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    Power where you need it.®

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