From ESS News
Backup, backup, backup: that’s the buzzword of residential storage installers but not necessarily of homeowners who want to add a battery. Resilience, rather than cost-savings-per-kilowatt-hour, is increasingly pitched by battery companies as one of the main reasons to install residential storage.
“There’s a need to de-emphasize cost per kilowatt-hour and focus on cost per hour of backup,” explained Rex Liu, the vice president of clean energy product management at Generac.
He told pv magazine USA that instead, they need to understand the value proposition and the outcomes of their system: “Will the system keep the lights on? Will it save money?”
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That really depends on the country, the Uk it is the ability to grid shift i.e. charge the batteries from cheap rate energy, and use that energy when grid costs are higher. Second to that would be off grid suppprt,
We use the batteries to support the house and the Pv to earn from export, when you only pay 8p per kWh and get paid 15p for export its a no brainer
Why is my pv installer balking about adding another battery to my system, in order to protect more of my home, than only half of it?
There are several important features that are not among the circuits that are protected by the one battery we were provided with the system be bought. Systems like the garage door, a sump pump and our whole house security system, have individual back up batteries, but they only last 8 hours at most.
The company tells me it has to do with the new battery not being able to communicate with the existing one. Please. Don’t p__s on my shoes and tell me it’s raining!
Any ideas?