On a plain 4,700 metres above sea level in Tibet, a solar farm harvests the sun’s rays. It is absorbing this abundant source of power to help generate the clean energy required to satisfy China’s burgeoning demand for electricity. This sun-drenched farm is part of a growing phenomenon where a 150-year-old technology, the lead battery, is becoming one of the most reliable solutions to the problem of storing and supplying the energy of the future.
While lead batteries are more commonly associated with the technology under the bonnet of your car, starting the engine, powering the safety features and electronics, it is also one of the cleanest and most reliable options available in the green energy revolution.
In Tibet, with up to 14 hours of sunlight a day in the peak months between April and July, the plant run by China Shoto, part of the Shuandeng Group, uses lead batteries housed in containers on site producing 30MW of solar power supported by 20MWh of energy storage.
By choosing advanced lead battery technology, the company argues it is able to offer reliable, safe and long-lasting storage for up to 10 years, switching supply on or off according to the requirements of the grid.
The system is being replicated globally with projects in the United States, Africa, the Middle East, Europe and across southeast Asia, which are quietly changing the face of energy storage.
Lithium and lead – two leaders in rechargeable battery storage
Analysts predict the world-wide scale of the market in renewable energy storage will vastly outweigh the supply of current technologies, be it lithium or advanced lead battery technology.It is likely that the majority of future rechargeable battery energy storage needs will probably be met by these two leading technologies.
In reality our own analysis of the market anticipates both technologies will be required to grow together to meet the level of demand. While there are other potentially promising technologies, they are unlikely to achieve the market scale necessary to make substantial inroads. And it is the race to provide the latest technical solutions where the real competition around battery technology will take place as innovation, reliability, safety and hard economic facts are all assessed.
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