FacebookTwitterLinkedInEmailPrint分享Greentech Media:The U.S. energy storage industry capped off its biggest year of installations with its largest single quarter in Q4.U.S. energy storage installation topped 522.7 megawatts/1,113 megawatt-hours in 2019 as a whole and 186.4 megawatts/364.2 megawatt-hours in the fourth quarter, according to the newly released Energy Storage Monitor, produced by Wood Mackenzie and the Energy Storage Association.For years, those in the industry have argued that the ability to store and release electricity nearly instantaneously offers great operational benefits, not just for the adoption of intermittent renewables but also for more efficient grid operations. The latest numbers suggest that this argument is starting to resonate as utilities across the nation contract for large battery plants and an unprecedented number of homeowners seek solar-battery combinations to keep the lights on in an outage.Indeed, the home battery sector delivered the most striking growth, the Energy Storage Monitor reported. Fourth-quarter residential installations doubled year-over-year to 40.4 megawatts/90.3 megawatt-hours, marking its third consecutive record-setting quarter.Eight states now contain utility-scale storage facilities adding up to more than 50 megawatts. Another 11 states operate more than 10 megawatts each. Only 15 states have yet to adopt any advanced storage in front of the meter, according to WoodMac’s data.Overall, U.S. storage installations are expected to nearly triple in 2020 and more than double in 2021. Residential numbers, in particular, will triple this year compared to last year. This year could also be the first in which the annual storage market surpasses $1 billion. In 2019, storage investments totaled $712 million; this year, they are poised to jump to just shy of $2 billion.[Julian Spector]More: U.S. storage industry achieved biggest-ever quarter and year in 2019 Wood Mackenzie: 2019 was a record year for battery storage across the U.S.