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101 renewable - grid storage

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Last Updated
1st of October, 2018

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Grid Storage concept:~

Direct grid electric power conservation or grid storage is a hot topic thus it brings a lot of interest from the consumer and utility power company. We can call “stakes are high for grid-level storage". The necessity has been there for a long time, to mitigate the power generated by wind and solar between intervals when resources are abundant and the time when they just are not available at all. The solution until now has been stalled by the economics; we have used deep cycle batteries as flooded or AGM type in a considerable number constructing racks of battery banks. They do require special real estate allocated for such projects, special maintenance, and they do offer a relative modest service lifespan.

With the development of Li-Ion type of batteries and with a very substantial drop in the price, the landscape has changed. Grid-level storage as an element of power backup becomes a real solution and a positive investment coming out of the age of sentimental approach for those at the top of renewable energy technological spear.

Before and After Meter

The same principles are valid in the case of large renewable utility power plants. To smooth the transition we have so-called clean conventional power grid generation based on natural gas and nuclear fusion. They will take the power load at peak hours or during the time renewables are idle. The power generation plants based on clean conventional resources will be partial replaced by large conservation projects based on high capacitive power banks.

We are following two distinct economic developments in electric power conservation: “Front of the meter” and “Behind-the-meter” segments. While large storage projects on the utility's side of the meter currently dominate deployments, smaller batteries in homes and businesses on the customer's side of the meter will become the biggest segment in terms of capacity in the next four years. (GTM - U.S. Annual Energy Storage Deploy).

Grid Storage main features:~

The grid storage systems are bringing considerable advantages:
>_easy to monitor and using big data easy to program for a specific geographical condition;
>_improve the reactive capacity of the grid and in this way the general efficiency of the grid;
>_reduce dependency on more costly conventional sources of power generation: natural gas and nuclear power plants;
>_improves the micro-grids by allowing them to complement each other at power pick;
>_improve grid frequency - DC power is a clean electric power with no harmonics;
>_they do require a lot less real estate compared to conventional clean power sources.

Conservation Global Upswing

Grid Storage feature developments:~

By the end of the decade, however, distributed batteries will edge out centralized systems in front of the meter. Behind-the-meter batteries in homes and commercial sites will amount to 841 megawatts of capacity; front-of-the-meter storage will amount to 821 megawatts of capacity. (In energy terms, utility-scale projects will still represent 54 percent of the market, giving that sector a bit of an edge.) U.S. figures.

For "Behind-the-meter" segment, we have identified some of the aspects customers are still skeptical about relative high prices, relative reduce the number of backup days they offer. Another negative aspect can be considering the system security; those types of high capacitors are prone to become a hazard for some of the brands and just go in flames.

The Joint Center for Energy Storage Research (JCESR), an innovation hub based at Argonne National Laboratory, want to build an organic flow prototype for grid storage. The project's founding goals: five times the energy density of commercial batteries at one-fifth their 2011 cost. New batteries will have to cost less than $100/kWh when scaled for commercialization. And they have to be scalable as volume and storage capacity: 10 times more volume has to be mirrored by 10 times more storage capacity. With these goals in mind, it seems all customers misconceptions from “Behind-the-meter” segment will become part of the past.

The big advantage of a so-called flow battery is that: is scalable, so if you make that tank of active ions 10 times larger you can store 10 times the energy density. That is not the case of Li-Ion batteries. And they are very safe.

The organic molecules will link together to form particles large enough to be blocked by a porous membrane, which will keep the charged particles in the liquid separate from the uncharged.

Redox Flow Batteries

The redox-flow prototype replaces the solids in lithium-ion batteries with liquids infused with organic molecules that carry a charge as they flow through the battery. The organic molecules are inexpensive, recyclable, and harmless to the environment.

Grid Storage components suppliers:~

Li-Ion batteries are - as now - the most used in conservation projects. Here are some of the North American heavy players:

Saft develops advanced technology batteries for the aviation, defense, energy storage and renewables, marine, medical, oil and gas, railways, space, telecommunications and utility metering industries.

Electrovaya Inc. is a developer and manufacturer of portable Lithium-ion battery power solutions for the automotive, power grid, medical and mobile device sectors. The company is based in Mississauga, Ontario, Canada.

LG Chem Ltd., often referred to as LG Chemical, is the largest Korean chemical company[1] and is headquartered in Seoul, South Korea. According to Chemical and Engineering News, it was the 13th largest chemical company in the world by sales in 2014.[2] LG Chem it is present in U.S. with Michigan's Holland plant.

Voltabox deliberately selected Austin, Texas, the “Birthplace of Lithium Phosphate Technology” as its base for developing the North American market. Various groundbreaking discoveries in the field of Li-ion technology originally took place at universities of the region, leading to the growth of firms that have developed and contributed to some outstanding infrastructure in this respect.

Tesla Energy is a technology company part of the Tesla Group (together with Tesla Motors). Tesla Energy it is focused on PV renewable market. They offer batteries integrate with PV solar – Solar Roofs - to harness the abundant power of the sun and reduce reliance on fossil fuels. Tesla renewable line of products:

Tesla Powerwall is Tesla’s home battery with the goal to make the most of your solar power system by storing unused solar energy and providing freedom from the utility grid.

Tesla Powerpack which is the new standard for commercial and utility scale battery solutions. Business consumers and energy providers can gain greater control, efficiency and reliability across the electric grid using the Powerpack.

Tesla Solar Roof it is built based on high-efficiency solar cell, they do produce energy even during high-temperature days. The solar roof is built with solar tiles integrated into the roof. They are extremely durable and high-impact proof.


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