Buying Home Electricity Storage For Your Home: 2021 Guide

Views: 32     Author: Site Editor     Publish Time: 2021-08-05      Origin: Site


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If you only want to use solar panels as your power source, it may be difficult to help you achieve self-sufficiency in power sources, so you need to buy electricity storage to improve your solar system, which can help you achieve 100% clean energy use!

electricity storage batteries

Who Is The Power Storage System Suitable For?

The residential power storage system is only suitable for owners who mainly intend to achieve a high degree of self-sufficiency through clean electricity. At the same time, this means maximum independence from energy suppliers.

Battery storage is not suitable for homeowners who are mainly concerned with profitability and profitability.

Be careful: Many solar storage suppliers calculate photovoltaic storage systems well. Based on unrealistic assumptions, such as a sharp increase in electricity prices.

Honest conclusion: If you are mainly concerned about self-sufficiency and independence, then the power storage system is the right decision

Lifepo4 Powerwall & Energy

The battery storage system is always used with generators.

LifePo4 Powerwall + Photovoltaic

In the beginning, it was recommended to combine energy storage with photovoltaics (solar power generation systems). Photovoltaic systems are cheap and easy to install. Home power storage systems are mainly designed for photovoltaic systems. This is why the term "solar battery" is often used.

With photovoltaic systems and LifePo4 Powerwall, a self-sufficiency rate of 50% to 70% can be achieved. The degree of self-sufficiency indicates how much of the building’s annual electricity needs are met by itself. Without batteries, solar power generation systems can only achieve about 30% self-sufficiency, so 70% of the annual electricity demand must still be obtained from the public grid.

LifePo4 Powerwall + Photovoltaic + Small Wind Power

Small wind turbines can also be connected to a system composed of home storage systems and solar power generation systems. Micro wind turbines perform an important function: it can make up for the supply gap in winter when the sun is not good. Combined with battery energy storage, photovoltaic and small wind power, a self-sufficiency rate of 80% to 100% can be achieved.

The solar storage system is then also used as a wind energy storage system. However, for this, lithium battery storage must have technical requirements. AC-coupled power storage systems are suitable for this, and they are integrated into the home power supply through the AC side. The electricity from the small wind turbine is converted to alternating current through its own inverter, fed into the home network, and supplied to the battery through this route.

electricity storage for home

The smaller BSLBATT lithium battery is usually used in photovoltaic small wind battery systems. Because solar energy and wind energy complement each other in the course of a day and a year. Intermissions bridged by batteries in the absence of wind and sunlight are less common.

Important Facts About Battery Storage

Anyone considering buying an electricity storage storage system should know these facts...

Energy Management Center

The function of a whole home battery backup goes far beyond storing electricity. The power storage system becomes the center of building energy management. The operating time is about 15 years, and the choice of equipment must be carefully considered. This also applies to future expansions, such as connecting charging stations for electric vehicles.

As a home energy storage system, lithium batteries can be charged more frequently and have a longer life and higher efficiency. It is a user-friendly technology in terms of location and operating behavior. The Federal Environment Agency has confirmed the safety of lithium batteries.

The Most Advanced Lithium Battery

In terms of the fixed use of buildings, lithium batteries have had the upper hand in the competition with lead batteries for many years. The 48v lifepo4 battery home storage system now dominates the market.

Germany is The Largest Home Battery System Market in The World

Germany is the world's largest market for building fixed battery storage sales. For 2020, EUPD Research's market analysts assume that the market growth rate is approximately 35% compared to the previous year. Most photovoltaic systems are installed with home storage systems (approximately 87%).

With a strong domestic market, German battery energy storage manufacturers are developing well. More than 50% of the power storage systems sold in Germany come from German manufacturers. German home storage providers are also in a good position in many foreign markets.

Self-sufficiency and Profitability

When choosing a power storage system for a house, people face a conflict of goals: the higher the storage capacity, the higher the self-sufficiency of the building, and the lower the profitability of battery power.

If you want a battery energy storage system that is as economical as possible, you should choose a small energy storage system for your photovoltaic system. Those striving for the highest level of self-sufficiency in the house will choose a large water storage tank combined with a solar power system. Related to the higher cost of stored electricity.

The following will discuss the design in more detail, namely the determination of the size of the solar storage system (purchasing skills).

Electricity Storage Cost

Importantly, especially for private homeowners, electricity storage systems are not primarily a profitable asset. With carefully selected equipment, you will not have any economic disadvantage compared to extracting equipment from the public grid. But the motivation for buying a battery storage system should be mainly self-sufficiency in electricity. A power storage system makes you independent, not wealthy.

If you are just looking for returns or minimizing electricity costs, you should initially install only photovoltaic systems without battery storage. Because solar energy is very cheap. However, self-sufficiency (self-sufficiency) will be restricted.

In recent years, the price of electricity storage has fallen sharply. This has increased by 50% since 2013. This means that the home storage system has reached the threshold of economic efficiency. Anyone who makes the right choice when buying a home storage system will not be in a worse economic situation than the full supply of the public grid.

electricity storage batteries cost

Electricity Storage Prices in 2021

What is the cost of the home battery storage system in 2021? The cost of a family’s battery storage device is between 5,000 and 12,000 Euros. The purchase price depends on factors such as memory size (net capacity) and equipment.

The decline in home storage prices can best be reflected in the cost per kilowatt-hour of storage capacity. In market analysis, researchers from RWTH Aachen University and Forschungszentrum Jülich determined that the price will drop to around 1,100 euros per kilowatt-hour in 2019. This price range is also realistic in 2021.

For a single-family residence, the annual electricity consumption is 5,000 kWh, and an available storage capacity of approximately 5 to 8 kWh will be selected. Assuming an average value of 1,100 Euros per kWh, the cost of a power storage system is between 5,500 and 9,000 Euros.

Buying Electricity Storage: Follow These Tips

Purchase new battery storage and photovoltaics

Homeowners who want to invest in a solar power system with storage capabilities can choose between different suppliers:

First of all, choose a good photovoltaic system manufacturer and choose a suitable energy storage system on this basis.

First, choose a home energy storage system and a suitable solar power system.

Let the professional company on-site provide a quotation for the complete package.

It is advantageous to choose a good and suitable power storage system first. On this basis, a photovoltaic system compatible with batteries was adopted. Why? When choosing a photovoltaic system, you may make fewer mistakes than when choosing a battery storage system. For the following reasons...

Battery storage systems are in the early market stage, and there are major differences in product quality. The photovoltaic industry is a mature industry with the following characteristics: mass production, fewer manufacturers aftermarket adjustment, and high product quality (in some cases, the performance guarantee is up to 25 years, etc.).

If you want to learn more about electricity storage, please subscribe to our news now, or contact us to get your power storage system. We have professional engineers who can help you calculate the capacity of a household battery suitable for your family!