Tesla Powerwall Economics


By Paul Homewood

h/t Joe Public

While Elon Musk has been throwing his toys out of the pram following Trump’s decision to exit Paris, let’s take a look at what his famous batteries have to offer.

This is what their website offers:



If we assume an all-in cost of £8000, and a ten year life (which matches the warranty), we get an annual cost of £800.

Add on interest at 5%, and the cost rises to £1200.

On top of this, of course, is the cost of solar panels etc, to produce the power in the first place.

Even then, it is highly doubtful whether the set up could provide anywhere near the amount of power I would need.

My annual electricity bill comes to to about £700.

Am I missing something?

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