EV Charging in 15 Seconds?

EV Charging in 15 Seconds?

An interesting but misleading claim.  Estonia-based Skeleton Technologies has announced with a flourish that it has a graphene-based ultracapacitor for EVs.  Because ultracapacitors accumulate static charges rather than store chemical energy, they do indeed recharge fast.  But they store very little energy.  So what Skeleton is saying is that with their package of graphene ultracaps and regular Lithium-ion batteries, they have a system that can accept enough charge in 5 seconds to allow someone to drive an additional 20 miles or so, rather than waiting for a more extensive charge-up.  This is not a new idea, and is consistent with Tesla having acquired ultracap manufacturer Maxwell, presumably to come up with a similar advance.  What is new is that a graphene ultracap is likely lower cost and higher capacity than the other ultracaps on the market.
Ultracaps, quite apart from making a rapid charge from an external charger possible, also extend EV range in another way.  Regenerative braking flows power back to the battery pack, but only about 20% is useful since a battery string cannot accept all the energy when it is delivered so fast.  Ultracaps would be able to store most of the energy from regen braking, and consequently, add a few miles to the range.  Clever.
You should expect to see more hybrid products like this.  In fact, this is one course that DAE Tech in Davis has taken for its new products.
Thomas Hall

ABOUT THE AUTHOR

Gary Simon is the Chair of CleanStarts Board. A seasoned energy executive and entrepreneur with 45 years of experience in business, government, and non-profits.

CleanStart Sponsors

Weintraub | Tobin, EYBlueTech Valley, Revrnt, Moss Adams, PowerSoft.biz

College of Engineering & Computer Science at Sacramento State

Hot and Overcast: Why We Need Innovation.

Hot and Overcast: Why We Need Innovation.

In the past week, the California Independent System Operator (CAISO) has issued a number of Flex Alerts. Flex Alerts are voluntary calls for consumers to conserve energy. On social media SMUD shared this call. It might seem like renewable energy has made this a new normal, but innovations will lead us out. Sacramento can be part of this innovation.

Why do we have Flex Alerts? The CAISO gives us a clear answer: “A Flex Alert is typically issued in the summer when extremely hot weather pushes up energy demand as it reaches available capacity. This usually happens in the evening hours when solar generation is going offline and consumers are returning home and switching on air conditioners, lights, and appliances.” In short there may not be enough power for the grid. 

This is due to adoption of renewable energy sources which have reduced emissions and improved our quality of life but also don’t produce power 24-7. Utilities and the CAISO model the energy to avoid shortages, you can learn more in CleanStart Associates Smith’s Blog

This should not be the NEW NORMAL. Yes, we will have more flex alerts, especially on hot overcast days BUT continued innovation will overcome this. With new energy storage technology and demand response systems. 

Increased storage will help match energy supply with demand, storing the excess produced by systems like solar and wind to be used later. Demand response is a solution like the Flex Alert. It is changing the energy demanded by a utility consumer behind the meter, to better match the power supply. Future demand response systems hope to do things like temporarily stop Electric Vehicles from charging (even having Electric vehicles discharge as part of storage) or turn off appliances that aren’t needed. Demand Response might only reduce a household’s demand by 100 watts, but over a territory like SMUD’s it adds up. There are over 180,000 households, multiplying 100 watts into 18 Megawatts. (Added Benefit 18 Mwh is ~8,800 lbs of carbon dioxide emissions in California)

New technologies being developed right here in Sacramento can help to overcome this and provide grid resiliency. From Storage like Off The Wall Energy, DAE, Empower Energy, SPIN, and RePurpose to companies working on demand response like Grid Rabbit. CleanStart is committed to building the region into a cleantech hub, help support the innovation that will reduce flex alerts and build the local economy, support CleanStart.

Thomas Hall

ABOUT THE AUTHOR

Thomas is the Executive Director of CleanStart. Thomas has a strong background in supporting small businesses, leadership, financial management and is proficient in working with nonprofits. He has a BS in Finance and a BA in Economics from California State University, Chico. Thomas has a passion for sustainability and a commitment to supporting non-profits in the region.

Sponsors

SMUD
CMC
RiverCity Bank

Weintraub | Tobin, Revrnt, Moss Adams, PowerSoft.biz, Greenberg Traurig

So Many Battery Breakthroughs

So Many Battery Breakthroughs

Just keeping my eyes peeled for new announcements, I have seen close to a hundred announcements of legitimate breakthroughs in improved battery performance.  And there seem to be an even larger set of dubious announcements where it looks like the science needs years to catch up with the claims.  
Today I saw another good one.  It involves a lithium metal battery with graphene and a silicon coating to extend its life.  Lithium-metal batteries are exciting because they charge fast and have a high energy density.  But lifetime has been the big issue with a few dozen cycles the norm.  The new announcement from researchers at Rice University indicates they can triple this lifetime, but it’s still nothing great–for now.
Nobel laureate Dr. John Goodenough at the University of Texas has also been at the forefront of materials breakthroughs for batteries for years.  You can thank him for the rechargeable lithium-ion battery.  (He also invented the technology behind Random Access Memory.)   He has some new ideas that people call the “quantum glass” battery.  It uses a solid electrolyte instead of a liquid.  Those trying to advance it claim it will lead to long life, quick charging, and take prices to $30 per kWh, making batteries a relatively insignificant cost in EVs. 
What I note in all these articles is the tendency for groups to think they alone will reach some amazing goals in battery performance, but on closer inspection they all note the same impressive goals as being within reach.  We wrote about this in a prior blog.
The lessons are (1) if you think you have an amazing battery technology that will have unequalled performance, you are probably underestimating the size of the crowd that is saying the same thing, and (2) if you think batteries won’t improve by an order of magnitude, you are not watching closely enough.  
So watch this space.  We likely will report on more of these advances.
Thomas Hall

ABOUT THE AUTHOR

Gary Simon is the Chair of CleanStarts Board. A seasoned energy executive and entrepreneur with 45 years of experience in business, government, and non-profits.

CleanStart Sponsors

Weintraub | Tobin, EY, Stoel Rives, Greenberg Traurig LLP

BlueTech Valley, Buchalter, Moss Adams, PowerSoft.biz

College of Engineering & Computer Science at Sacramento State

Thinking Small and Simple = Thinking Smart

Thinking Small and Simple = Thinking Smart

Over the past decade, rooftop solar has made a big impact on energy generation. Now, in California, energy can be “free” during the day when solar is abundant. That is one of the reasons you have seen CleanStart talk about storage so much. To battle, the BIG problem of Climate Change Utilities and new companies have been advancing storage solutions. One of those companies, Simpl Global, led by Farid Dibachi has developed a battery around the needs of rooftop solar consumers. 

Farid Dibachi is a habitual entrepreneur and has been innovating to make storage simple, hence Simpl Global.  Rooftop solar owners are conscious of their energy cost, and Utilities switching to Time of Use becomes a pain point.  Dibachi saw solar customers getting hit twice with the shift to Time of Use. With their solar systems generating power 3 to 5 hours a day when prices are cheap, they get less for the electricity they generate and pay more for electricity when they are not generating.

From Simpl Global Slides

Residential consumers install solar because it made sense as a capital investment providing a return.  Why batteries were not taking off as solar had is because the cost has typically been greater than the savings.  With that in mind, Dibachi formed Simpl Global with engineers and entrepreneurs to tackle these challenges. They created the SimplBox with innovative technology in Impedance matching, IoT networked controls, and plastics engineered for thermally protecting the energy storage, with a simple design for easy install under a solar panel. 

Their goal was to make a battery that was easy to install and use while being affordable.  They have created SimplBox a safer lithium iron phosphate battery with a unique battery management system. Conventional battery storage systems for home PV require a number of individual devices to manage power flows.  Farid and his team decided to make a battery that paired easily with rooftop solar and relied on clever electronics to replace many of the additional devices.  What they have created is a smart battery that efficiently accepts and delivers power simultaneously.  

Dibachi is particularly proud of the ease of installing and how their advancements in impedance matching have led to a battery management system with high efficiency that can just be plugged in.  The system works like a series of valves efficiently accepting and delivering power simultaneously.  Its efficacy and simplicity allow it to be modular, meaning expanding storage capacity is as easy as plugging-in another SimplBox and using off the shelf inverters for the systems connection to the grid.  This is big, because of its versatility, but it also allows it to be small.

SimplBox System by Simpl Global

This versatility allows for the SimplBox to scale up for use in Utility Solar. It isn’t limited by the capacity of the SimplBox, because you can add more without having to change the battery management or specialized hardware. Being able to “just add more” is an advantage for utilities and solar power companies looking to make incremental changes.  

In residential storage, LG and Tesla have developed storage options greater than 10 kwh. They make them large so they can support a larger solar system and capture the max power possible.  In Sacramento, a solar system can easily fill an LG and Tesla Battery in the summer, but the average daily generation is ~6 kwh.  That low generation with install cost batteries that size is cost-prohibitive to many, especially smaller urban systems. The SimplBox is made smaller and modular, with the idea that more solar customers can take advantage of it. 

All of this addresses the pain points of residential consumers by giving them control and reducing the cost. Simpl Global plans on selling through existing solar installers and distributors this August after they complete their UL Certification in July.

Farid Dibachi spoke at our recent CleanTech Meetup on Simpl Energy.  You can watch it here and read about the meetup here.

Thomas Hall

ABOUT THE AUTHOR

Thomas is the Executive Director of CleanStart. Thomas has a strong background in supporting small businesses, leadership, financial management and is proficient in working with nonprofits. He has a BS in Finance and a BA in Economics from California State University, Chico. Thomas has a passion for sustainability and a commitment to supporting non-profits in the region.

Sponsors

SMUD
CMC
RiverCity Bank

Weintraub | Tobin, Revrnt, Moss Adams, PowerSoft.biz, Greenberg Traurig