Global trends in home energy storage


Global trends in home energy storage
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1. Europe: Home energy storage is growing rapidly, with Germany leading Europe

The installed scale of household energy storage in Europe is in a constantly increasing trend. In 2021, the European household storage reached 2045MWh, with a year-on-year growth of 73%, and the 15-21 years’ compound annual growth rate reached 63%, with a very fast growth. Germany is the biggest driving force for the growth of household energy storage in Europe, and the installed scale of household energy storage in Germany reached 1479MWh in 2021. The share of European households is 72 percent, followed by Italy (191MWh), the United Kingdom (81MWh), Spain (48MWh) and France (35MWh), with CR5 accounting for 90 percent.

2. Germany: the world’s largest household energy storage market, with a continuous increase in installed household storage capacity

Germany is the world’s largest market for household energy storage, with the world’s largest penetration rate of installed optical storage. In 2021, new household energy storage in Germany will increase by 45% to 1.48GWh, accounting for 34% of the world’s total. The cumulative installed capacity was 3.92GWh, an increase of 60.6%, accounting for 32% of the global total. In 2021, Germany’s light storage penetration rate was 3.6%, ranking first in the world. Under the energy crisis, the price of electricity rises, stimulating the high demand for household storage. The average wholesale electricity price in Germany increased from €52.8 /MWh in January 2021 to a maximum of €206 /MWh in June 2022, an increase of 313%.

3. Italy, Britain and Austria: steady growth of household savings

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High electricity prices and policy subsidies drive the development of household reserves. In addition to Germany, Italy, the United Kingdom and Austria, which are among the leading countries in terms of installed household storage capacity, see a steady increase in the annual installed household storage capacity driven by electricity price and policies. By the end of 2021, the installed capacity of household storage in the UK is 81MWh, with a year-on-year growth of 113%. Italy ranks second only to Germany in terms of the installed capacity of household storage in Europe. In 2021, the installed capacity of household storage in Italy is 191MWh, with an increase of 122%.

4. United States: Energy storage market space is huge, and the development of household energy storage is accelerating

Energy storage in the United States is on a fast track. The cost of energy storage systems in the United States continues to fall, policy support continues to increase, and regulatory reforms by federal and state governments have led to rapid development of energy storage in the United States. In 2021, the newly installed energy storage capacity in the US was 3971MW/10880MWh, with a year-on-year growth rate of 341%. Among them, household energy storage increased by 343MW/960MWh, accounting for 8.8% of the total newly installed energy storage capacity. According to the American Energy Storage Association, the U.S. energy storage market will see a five-fold increase in installed energy storage system capacity by 2025. User-side energy storage systems continue to be a major part of this growth.

5. China: Currently, the economy of household storage is not high, and household storage manufacturers mainly target at overseas customers

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Energy storage installations in China are growing rapidly, mainly from centralized installations. China’s installed energy storage capacity has been growing rapidly in the past two years. In 2020, the newly installed energy storage capacity has reached 1.37GW/2.48GWh, with a year-on-year growth of 153%/189%. In 2021, the newly installed energy storage capacity has reached 2.45GW/4.61GWh, with a year-on-year growth of 79%/86%. Distributed energy storage is still in the early stage of development, and economic efficiency is not high. In 2021, the installed installed capacity of distributed energy storage is 188MW/333MWh, with +11%/-30% year-on-year, and centralized energy storage accounts for over 90%.

6. Australia: Policy support, lighting and installation conditions drive the development of household storage

Policy support, better lighting and installation conditions drive the development of household energy storage. In terms of policy support, Australia has introduced small-scale renewable energy programs and FiT subsidy policies to promote the installation of optical storage. In terms of lighting and installation conditions, Australia has sufficient lighting resources, high photovoltaic power generation efficiency, small population, and villas, which are suitable for photovoltaic installation and high economy of home storage system. In 2021, Australia will realize 206MW/494MWh installed capacity in household storage, with a year-on-year growth of 45% in terms of MWh caliber.

7. Japan: subsidy decline, unstable power supply, housing type suitable to drive the development of household storage

Japan has a high household energy storage penetration rate, second only to Germany. In 2021, the installed amount of post-surface energy storage in Japan is 931MWh (+8% year-on-year), and the energy storage for households accounts for 90% of the post-surface energy storage. According to the survey statistics of Infolink, there are more than 25 million houses suitable for PV installation in Japan. By 2020, the proportion of PV and energy storage installed is about 10%/2%. Even in Japan, where the development of photovoltaic for household use is relatively mature, there is still a large space for expansion in the future. We expect the penetration rate to reach 38.5% by 2025.

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Sikander Zaman
writing is my profession, doing this from long time. writing for many online websites one of them is scoopearth