The Batteries

Electric bus batteries come in a variety of powers and designs. As with cell phones, flat screens and electric cars, electric bus batteries keep getting better, and less expensive while packing more power into a smaller package and delivering more miles per charge.

Here are Proterra’s batteries and charging system:



This photo and description are from bus builder BYD’s web site:

byd-bus-batteryBYD’s Iron-Phosphate bus battery is the world’s only 100% fire safe, completely recyclable Electric Vehicle battery capable of being used for up to 30 years. Developed by BYD’s expansive team of over 15,000 R&D Engineers, the BYD Iron-Phosphate Battery has been used in more than 2,500 transit buses and 35,000 EVs and PHEVs around the world making it the most widely tested and proven EV battery on the planet.





The case for recycling EV batteries:

The Tesla Gigafactory is building batteries for electric cars as well as longer range vehicles like buses and trucks and energy storage.  Tesla broke ground on the Gigafactory in June 2014 outside Sparks, Nevada, and expects to begin battery cell production by the end of 2016. By 2018, the Gigafactory expects to reach full capacity and produce more lithium ion batteries annually than were produced worldwide in 2013.

hero2xTesla Motors is among the world leaders on EV battery development and here are their most recent thoughts on being a “closed loop” factory which will also recycle their EV batteries..

  • The Gigafactory will recycle batteries, using 100% clean, renewable electricity.
  • 100% of the lithium in Tesla’s lithium-ion batteries can be recycled.
  • The majority of the cost of a battery is the materials. Recycling most of those materials will dramatically cut the cost of batteries.

Reusing used EV Batteries to power buildings or store solar power

General Motors is using EV batteries from their Volt to power one of their data centers:



2016-12-05_18-30-56The Potential Economic and Environmental Benefits of Second-Life Batteries
Instead of recycling them immediately, the thousands of batteries that will be coming out of electric vehicles in the coming years could be repurposed, leading to a flood of inexpensive batteries that can provide energy storage services for customers, utilities, and grid operators.

Researchers from the California Center for Sustainable Energy estimate that the potential second-life battery supply already in existence could total 850 megawatt hours of electricity, at 425 megawatts worth of power, assuming 50 percent of the battery packs in use as of 2014 can be repurposed with 75 percent of their nameplate capacity.15 These second-life batteries could provide multiple value streams to customers and grid operators and bene t the environment by integrating variable renewable energy and reducing the upfront cost of electric vehicles.

Because second-life batteries will retain significant capacity, they may be well-suited for various customer and grid applications, particularly if aggregated for bulk energy storage.

2016-12-05_18-32-56Conclusion of the “Reuse and Repower” report produced by a partnership of the UCLA School of Law’s Emmett Institute on Climate Change and the Environment and UC Berkeley School of Law’s Center for Law, Energy & the Environment.

“California is the perfect test bed to launch a second-life battery market. The state is a national leader in both electric vehicle adoption and energy storage procurement. It also leads in renewable energy deployment and greenhouse gas reduction programs, which will necessitate more energy storage to integrate renewables and decarbonize the electricity sector. State leaders can use these policy tools and technologies to harness the signi cant private capital in the state and beyond to launch a new market for second-life electric vehicle batteries that will bolster both electric vehicles and energy storage. The state could ultimately blaze a trail that other states and countries can follow, providing innovative and economically bene cial uses for second-life electric vehicle batteries.