This story is unavailable.

The maths needs a bit of a seeing too here. Surely if the house uses 340kWh more electricity per year the only way that can equate to 160kgCO2 is if it was being replaced entirely by grid electricity at the top end of the grid’s CO2 intensity as it equates to 470gmCO2/kWh.

The whole point of battery storage is that you charge it when the grid is at it lowest CO2 intensity or off your own renewables, where the CO2 intensity is very low. If being charged sensibly this should mean that the extra energy used is offset and some by the ability to use low CO2 intensity energy — renewable energy — when it is available.

Like what you read? Give Charlie Baker a round of applause.

From a quick cheer to a standing ovation, clap to show how much you enjoyed this story.