Hybrid Power Skid
The Hybrid Power Skid concept was developed during a Phase II SBIR to Quantalux. The design incorporates a micro grid & biogas generator to reduce energy costs at municipal wastewater treatement plants. The innovative behind-the-meter approach can produce power during peak periods, maximizing the value of biogas.
This Phase I SBIR sought to find the best use for biogas produced at wastewater treatment plants (WWTPs). The overall goal was to quantify financial benefits based on current cost of energy and potential environmental credits. Our team used standard financial measurements such as Return on Investment (ROI) and Internal Rate of Return (IRR) to quantify the viability of biogas- based on energy production.
The project also evaluated using biogas as a feedstock for Renewable Natural Gas (RNG). This approach was much more promising since both federal and state programs will pay a premium for RNG. RNG can be produced at WWTPs, dairies, and landfills, and as a result the potential market is much larger than just wastewater treatment plants.
Variable Power Sources
The generator of the Hybrid Power Skid uses several different kinds of power to ensure peak performance
Bio-Gas generated by the plant can be stored and used to create power burning off…
Batteries can be used to supplement the generator when gas and…
In warmer climates solar panels can be used to charge the batteries and provide additional power to the generator
As a final measure, natural gas can be used to power the generator if other sources are unavailable
Peak Shaving
The Hybrid Power Skid uses onsite power during the day when energy from the power grid is the most expensive. By alternating the sources of electricity, energy costs for the plant are significantly lower.
Utilizing Greenhouse Gasses
Biogas is a natural byproduct of the wastewater treatment process. Plants typically burn this gas off releasing great amounts of methane into the atmosphere. The Hybrid Power Skid will use this gas to help power the plant.