Project Background
The solar farm, located in a sunny region, aims to generate a substantial amount of electricity from solar panels. However, the intermittent nature of solar energy production poses a challenge. To overcome this, an energy storage system is required to store excess energy during peak sunlight hours and supply it during low - generation periods or at night.
Battery Deployment
Multiple ETC 280AH 3.2V batteries were installed in a well - ventilated and temperature - controlled storage facility at the solar farm. The batteries were connected in parallel to increase the overall capacity and in series to achieve the desired voltage for the grid - tie system.
Performance Highlights
Exceptional Cycle Life: With a cycle life of ≥6000 times, the batteries have withstood the frequent charge - discharge cycles over the past few years. This has significantly reduced the need for battery replacements, resulting in lower operational costs. For example, in the first three years of operation, only minimal degradation in capacity was observed, ensuring a stable energy storage solution for the solar farm.
Ultra - Low Internal Resistance: The internal resistance of ≤0.2mΩ has led to high - efficiency energy transfer. During charging, the batteries can quickly absorb electrical energy from the solar panels with minimal power loss. In the discharging phase, they deliver a stable and consistent power output to the grid. This high efficiency has increased the overall energy yield of the solar farm, as more of the generated solar energy is effectively stored and utilized.
High Peak Discharge Capability: The peak discharge rate of 2C has been crucial during sudden grid demand surges. When the local grid experiences a sudden increase in power requirements, the ETC batteries can quickly release a large amount of energy, providing the necessary power boost. This has helped the solar farm to better integrate with the grid and meet the dynamic power demands of the local community.
Cost - Benefit Analysis
The 5 - year warranty provided by ETC has given the solar farm operators peace of mind. In case of any manufacturing defects, the warranty coverage has saved the farm from significant financial losses. Additionally, the long cycle life and high - efficiency performance of the batteries have reduced the overall cost of energy storage over time. The initial investment in the ETC batteries has been offset by the savings in replacement costs and increased energy revenue.
