PALO ALTO (KCBS) – Tesla shares (TSLA) are getting a charge from a Bloomberg report that the company will unveil a home battery and a large-scale utility battery, at an event at its Hawthorne design studio next week.

Bloomberg got a hold of an email from Tesla’s investor-relations chief saying the company will explain the benefits of Tesla’s solutions compared to battery options in the past.

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There has been speculation that Tesla will look to challenge the traditional utility power grid with home and utility batteries, and a research note from Deutsche Bank says Tesla could be at the forefront of an energy storage market that could triple to six billion dollars in sales by 2020.

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There is some speculation that this is the product Musk was hinting at when he Tweeted late last month that the company would be unveiling “not a car” on April 30th.

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TSLA was up more than 5% on the report.