Strong growth ahead for battery storage


Strong growth ahead for battery storage

Large-scale battery deployment was subdued in the first quarter of 2020, but this slowdown was only temporary, as more than 1 GWh was deployed globally in each subsequent quarter. IHS Markit’s latest company and project database report highlighted the fourth quarter in 2020 as a record-breaking period, with more than 2.2 GWh of installations (not including residential). This brought the total in 2020 to over 5 GWh, compared to 3.2 GWh in the previous year.


 Strong growth ahead for battery storage 1


Project sizes also increased significantly in 2020. In the United States, the Moss Landing project – built on the site of a former gas power plant – became the largest single-sited battery energy storage project. It even surpassed the 202.8 MWh Qinghai Solar Farm, which was completed earlier that year – although note that IHS Markit is tracking more than 5,200 projects in its project database and invites companies to submit project lists.

The first energy storage project above 100 MW came in 2017. It took another three years for both the 200 MW and 300 MW barriers to be broken. Projects in the order of 400 MW and above have been announced and are likely to be in operation before the end of 2025. Project sizes are increasing because they are inversely proportional to system prices, which have continued to decrease, making larger projects more economically feasible.

In 2021, the United States is forecast to account for 50% of the global market, following a threefold increase from 2020, as energy storage project owners take advantage of the federal solar investment tax credit (ITC). In Europe, a 70% increase in annual installations will be realized in 2021, driven by new frequency response, capacity market, and renewables co-location opportunities.

This year will be a record period for growth, but it also marks the start of a longer period of sustained growth for the industry through to 2030. Much of this growth will come from the front-of-the-meter segment, and we anticipate that larger utility-scale projects will become the real engines of growth for the energy storage industry in the coming years. The United States will continue to extend its dominance of the global market, gaining market share until 2023. However, from 2025, decarbonization plans in mainland China will lead to rapid growth in the region, driving the Asia Pacific to account for 44% of annual installations by 2030.

Residential storage

The IHS Markit residential energy storage index highlights that in the fourth and final quarter of 2020, shipments saw an increase of 19% quarter on quarter, and five countries reported shipments exceeding 100 MWh. Germany saw shipments fall significantly in the final quarter of the year as inventory was cleared and system suppliers waited for the delivery of batteries.

In 2020, both Germany and the United States recorded shipments of over 1 GWh. Tesla ranked first in terms of capacity because of its dominance of the U.S. market, but also geographic coverage. Sonnen was the leading supplier on an MWh basis in Germany (the largest market) in 2020.

In the latter stages of 2020, customers in Germany, Italy, and the United States were experiencing delays of between three and nine months, as demand had begun to exceed supply. Installations in 2021 are expected to rise to 1.6 GW/4.1 GWh, representing a year-on-year increase of 26%, after deployments in 2020 surpassed 1 GW for the first time (1.3 GW/3.2 GWh – annual installations in 2020). Self-consumption of rooftop solar PV generation and backup power continue to be the main drivers for new installations, as markets with support schemes keep growing rapidly.

In the short term, subsidy schemes will drive deployment, encouraging installations as solar and storage are supported. Current leading markets – Australia, Germany, Japan, and the United States – all have the same things in common: They have strong solar markets with schemes in place to encourage new and retrofit storage installations.

California continues to lead in C&I storage deployments, which are bolstered by the state’s strong incentive programs and high-demand charges. IHS Markit forecasts that the state will capture more than 50% of the North American market in 2025. The sector will lag behind the residential sector until 2030 when it is forecast to surpass it with annual installations of 3.5 GW/9.5 GWh.

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