Tesla is staring to "think about it" or, I knew this would end up costing over 15 K

Dave Angelini

They key to residential storage appears to be having those batteries participate in more than one market or provide multiple services. But the Tesla 10 kWh Powerwall was designed for home backup power – it was guaranteed for just 500 cycles, as opposed to the 5,000 cycles its smaller counterpart could provide.

"We have seen enormous interest in the Daily Powerwall worldwide," Tesla said in a statement emailed to GTM. "The Daily Powerwall supports daily use applications like solar self-consumption plus backup power applications, and can offer backup simply by modifying the way it is installed in a home. Due to the interest, we have decided to focus entirely on building and deploying the 7-kilowatt-hour Daily Powerwall at this time."

 

But experts at the research outlet affiliated with GTM questioned the economics.

 

“Even some of the deep cycling lead acid batteries offer 1,000 cycles and cost less than half of the $3,500 price tag for Tesla Powerwall,” said Ravi Manghani, senior energy storage analyst at GTM Research. “For pure backup applications only providing 500 cycles, lead acid batteries or gensets are way more economical.”

 

Navigant Research has called home battery storage "one of the fastest-growing markets for energy storage," and predicted the distributed energy storage systems would undergo rapid growth. According to the firm, annual revenues are expected to rise from $450 million last year more than $16.5 billion in 2024.

 

There are several companies offering competing products to Tesla's Powerwall. ElectrIQ is probably the newest on the scene. The company is offering its IQ System home battery and software, which offers customers access to battery data, appliance usage stats and an overview of connected solar resources.​

 

The new company has already nothced a out 4,000 pre-orders for the stsrems, which include integrated software and a DC-to-AC inverter for about a $16,000 retail pricetag.

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