Want to keep learning?

This content is taken from the EIT InnoEnergy's online course, Battery Storage: Understanding the Battery Revolution. Join the course to learn more.

Skip to 0 minutes and 8 seconds Thanks for joining us today If you could introduce yourself and tell us what it is that you do? So my name is Bo Normark I serve as a Thematic leader for Smart grid and storage in InnoEnergy These two fields are very important for transportation and power sectors and I think we need to elaborate more on this And from your experience, how important do you think energy storage is for the present and the future of our planet?

Skip to 0 minutes and 37 seconds We all know the challenge. We have the global challenge to transform our power system and also our transportation system In both these areas, batteries have emerge as the key technology For the power sector, to handle variability and power production but also to handle the variability in the use of electric power and for the transportation sector, electrification is the key technology and then you need batteries and what are the different forms that energy can be currently stored in?

Skip to 1 minute and 10 seconds We have the traditional ones, because if you talk about energy storage in relation to electricity people will think about hydro, because it’s stored in the water and that’s a very good way to store for very long times You can store for days, weeks and even years We also have, compressed air is another form that has been used where you also can store for quite a long time But these two forms always have limitations And particularly, if you want to store for shorter times we can see that the batteries have become very competitive technology With batteries, you can store for hours, days, but maybe not longer But you can also store in very different scales which is not so possible with the bigger ones, like hydro dams and the different scales that you’re talking about What are those scales?

Skip to 2 minutes and 2 seconds Well, we have two scales. One is in power, and the other one is in time and if you look at the hydro dams, then you can store very large amounts of power You can serve the whole country of Sweden You can actually serve for a month with the hydro dams we have in Scandinavia and you can provide the entire power for the country For the compressed air -which is, by the way, not so common up here but I would say worldwide it is used- then you talk about, again, a few days, maybe up to a week For batteries then, then you have a much wider range So you can talk about everything from, I would say, minutes, up to hours and days And in power terms, you usually talk about then powers that is you can power similar to a car You can have hundreds of kilowatts, maybe up to two megawatts And there you see development also, that now you can see, battery stores up to hundreds of megawatts But that’s very recent development And a lot of the benefits seem quite obvious by using this type of energy storage But what do you think are the benefits that people might not necessarily realise?

Skip to 3 minutes and 21 seconds Or can you let us know what they are, just to differentiate from ordinary energy storage which isn’t battery related? Well, if I take one example from the power sector, it’s quite interesting because of course people realise that you can store energy People realise if you have PV panels, you can store it during the day and use it in the night But what people maybe don’t realise, you can also use the battery to reduce the power consumption because how much power you use can be quite important It’s not the energy only, but the power And you can drastically reduce the power need.

Skip to 3 minutes and 51 seconds And this is not so well-known Can you explain what the different types of storage are based on time, duration, and delivery of power? We mentioned some of them already, and then I covered the batteries If you want to store energy for very short times - and now we’re talking about seconds, minutes, and maybe 1/10 of minutes we have a technology called supercapacitor, which is very good because these capacitors have, I would say, almost unlimited lifetime and you can charge in this kiosk as many times as you like And you can also release very high amounts of power For longer storage, if you don’t have the hydro storage or compressed air of course hydrogen storage has emerged as one very interesting technology because then you transform the electricity to gas and the gas you can then store basically as long as you like So that’s why we believe in hydrogen storage, because that you have no limitation in how much you can actually use And you can also locate it wherever you like Tell us a bit about how lithium batteries are representing electrochemical storage How are they also being used?

Skip to 5 minutes and 12 seconds Well, as you mentioned, it is chemistry So that means that you store the electricity in a chemical process And you can release it in a chemical process The advantage with lithium batteries is that they can store, compared to other battery technologies, very, very high amount of energy That’s in a given space and for a given weight That’s why today, if you want to have in electric cars, lithium battery is the only choice For stationary storage, as we say, where space is not so important then you can have other forms of batteries But everything that is moving, then you have lithium batteries That’s why you have lithium batteries in the smartphones also You don’t want to carry batteries as big as the phone And where do you see the lithium battery going to?

Skip to 6 minutes and 8 seconds So what is the future of the lithium battery? It’s currently used in a lot of technology these days But what is the future of the lithium battery? And is it going to change, or is it going to stay the same? Well, first of all, let us take us back a little in time I don’t think people are aware of how many lithium batteries you have in your home I made a little quick count and said, 10 years ago I had one lithium battery in my home Today, I have 20. You have lithium batteries in your shaver, in your toothbrush. you have it in the speakers.

Skip to 6 minutes and 42 seconds you have it in electric toys and you have electric bikes And you can go on and on. And so over the last 10 years we have started using the home quite extensively And the new thing now is that we are starting to use batteries also for other applications.

Skip to 7 minutes and 0 seconds where we use bigger batteries and more batteries And the typical example, of course, is the electric car, but also in the power sector Again, people see that we start use batteries together with solar panels, I mentioned that already But we also can see that you will have the batteries to make energy use more efficient in a home So you can decouple, so to say, the use from the energy you draw from the grid And I personally believe that is an application that will grow very, very fast once people see the value you can bring with the batteries.

Needs for energy storage and storage alternatives

Why is energy storage important for the present and future of our planet? Which different types of energy storage are available? The focus will be on the currently most promising energy storage technologies. Listen to Bo Normark, Thematic Leader for Smart Grids and Energy Storage at InnoEnergy, as these crucial questions are submitted to him in a series of short interviews.

Share this video:

This video is from the free online course:

Understanding Energy Storage: The Battery Revolution

EIT InnoEnergy