We are Europe’s 1st conference dedicated solely to energy storage since 2010. We have a history of 10 successful Forums in Europe, Asia, and Australia. Past speakers include over 240 different Utilities from 54 Countries as well as Government and Regulator keynote speakers such as: Japan’s ex-Prime Minister Yukio Hatoyama, UK Govt. Climate Change Activist, Sir David King, Alternative Nobel Prize Winner, the late Dr. Hermann Scheer (Germany). Check out our photos section.Learn More
Our Forum format includes 3 unique features such as an Action Planning session, a Breakfast with the Utilities and a Breakfast with Investors, all within a 5 star Hotel environment. 90% of our programme content is addressed by speakers representing project developers, buyers and end users of storage technologies. In 2018 in Berlin we feature speakers from more than 30 Utilities, 10 Regulators and 5 EPCs representing over 20 different countries. We are truly a World Forum.Learn More
We specialise on 2 separate Conferences and 3 Training Courses for energy storage professionals. A 2 day Forum focussing on Residential Applications and EoT (14-15 May, 2018). Another separate 3 day Forum instead focusses on Large Scale applications (16-18 May, 2018). The Energy Storage Academy runs a 2 day Training Course in different regions. We are committed to deliver quality driven content through researching and drafting each topic title in our programme before inviting speakers.Learn More
2 Full Conferences – 5th Residential Energy Storage Forum (14+15 May) + 11th Energy Storage World Forum LARGE SCALE FOCUS (16+17+18 May)
11th Energy Storage World Forum – LARGE SCALE APPLICATIONS FOCUS (16+17+18 May)
11th Energy Storage World Forum (16+17 May) – LARGE SCALE APPLICATIONS FOCUS
RESIDENTIAL ENERGY STORAGE FORUM: 2 Days ONLY (14+15 May)
As intermittent renewables like wind and solar make up a larger percentage of power generation, energy supply becomes more variable — more power than the grid requires when the sun is shining, not enough when the sun goes down. To match supply to demand on a second by second basis, energy must be stored to be released at later times.
Coal, oil, gas and nuclear fuel are also forms of stored energy — the fuel is consumed as the energy is released. The main benefit of modern energy storage as that energy can be stored and released many times, hundreds or thousands of times (or more), over the system lifespan.
There are many different technologies being used to store energy, here are the main ones you will encounter along with some of their characteristics, advantages and disadvantages.
Electrochemical almost always means batteries or battery energy storage systems (BESS). In a charged battery, its chemical makeup causes an excess of electrons at the anode. These electrons flow to the cathode through the conductive electrolyte, causing an electrical current. Researchers are constantly trying to come up with new and improved battery chemistries — too many to examine in this introduction. The most commonly encountered electrochemical storage types are:
Solid state batteries
These are the batteries you will be used to seeing — in a laptop, a mobile phone or an electric car. These batteries use a solid electrolyte and have chemistries such as lithium-ion and lead-acid (although there are many more!). The main benefit of this technology (especially lithium-ion) is that it is incredibly energy dense and fast to respond; a lot of energy can be stored in a very small volume and released in a quick burst.
Another class of batteries that are used in grid applications are flow batteries. Liquid electrolytes are used instead of solids. While much larger and less energy dense than solid state batteries, for large stationary applications, flow batteries have other advantages such as their lower cost, non-toxic materials and extremely long lifespans.
When a material is heated up or cooled down, this stored heat (or cold) can be used later. For example, heat from the sun can be used to heat well-insulated water tanks so that it can be used when the sun has gone down. Off-peak power can be used to cheaply heat or cool the storage material so the thermal energy can be used during expensive peak times.
When a storage material changes its phase (e.g. from liquid to gas, or solid to liquid), the material absorbs a lot of heat energy for later use. This is the physics behind molten salt thermal storage — electricity is used to melt the salt, storing the electrical energy as heat. When electricity is needed, the molten salt is used to turn water into superheated steam which can power turbines.
Heat and cold stored in this way can even be used months later, if the storage recipient is well-insulated — the Drake Landing Solar Community in Canada stores excess solar heat in huge underground boreholes so it can be used to heat homes in winter.
These storage technologies work by turning electrical energy into kinetic energy or gravitational potential energy (which will then be turned into kinetic energy).
As recently as 2010, pumped hydroelectricity made up 99% of the world’s energy storage capacity. Water is pumped from lower to higher elevations when electricity demand is low, when it is high, the huge quantities of water rushing downstream are used to power turbines.
Unfortunately, the disadvantages of this method include the need for suitable geography and significant damage to ecosystems and communities caused by the building of large reservoirs.
Different ways of storing energy mechanically involve spinning flywheels, compressing air and lifting huge weights to form “gravity batteries”. The kinetic or potential energy can then be released — letting the air expand or the weights drop — so that the motion can be turned back into electricity.
Advanced Energy Storage
Innovative scientists, researchers and companies have spent years researching new ways to store energy; there are simply too many of them out there to explore them all here in detail.
Some advanced energy storage methods include: supercapacitors and ultracapacitors, power-to-gas (converting electrical power to a gas fuel like hydrogen), liquid air, superconducting magnets… others have combined multiple energy storage technologies into one system to create hybrid solutions.