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                        "text": "Time-of-use tariffs already exist in Britain, so the commercial idea is real. The saving is the price gap on kilowatt-hours actually delivered to household loads, after charging and discharging losses, not the cheap rate times nameplate capacity. Revolta has not published round-trip efficiency, so no annual saving can be calculated from the announcement. If the dearer rate is only a little higher than the cheap rate, conversion losses can wipe out the margin. Standing charges do not fall because a battery cycles."
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                        "text": "Do not assume so. A supplier’s export tariff is generally built around renewable generation, not around reselling electricity that was imported from the grid. Some tariffs restrict battery export or will not pay a premium for units bought earlier. Until a specific tariff’s terms say otherwise, the realistic case is using the stored electricity in your own home."
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                        "text": "Sodium-ion uses sodium rather than lithium as the main working ion, and this class of cell is often discussed as avoiding nickel and cobalt. That is a materials difference, not a certificate. Revolta has described the cells as non-flammable, but that is a company statement, not published independent test evidence on the whole unit. Cycle life, recycling routes and inverter life have not been published for this project. Lithium iron phosphate remains the chemistry most British home-storage jobs use today."
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                        "text": "A 13 amp socket is not a lawful or sensible connection for sustained operation in parallel with the mains, and this announcement does not create an exception. Grid-tied batteries fitted in Britain are normally hard-wired to a dedicated way in the consumer unit, with a lockable isolator. Which of ENA Engineering Recommendations G98 or G99 would apply cannot be known until inverter rating and type-test status are published. G98 is still a formal notification route, and where G99 applies, connecting before approval is not a minor paperwork slip."
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