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Tesla CEO Elon Musk is going to shake up the way the company sells its solar panels.

In a tweet late on Wednesday, Musk said from next week, all sales of the company’s solar energy products will come together with its energy storage battery Powerwall.

“Solar power will feed exclusively to Powerwall. Powerwall will interface only between utility meter & house main breaker panel, enabling super simple install & seamless whole house backup during utility dropouts,” he said in a followup tweet.

Bloomberg reported this followed a complaint from Brett Winton, Director of Research at Ark Investment Management that his Tesla solar panels haven’t generated a “single watt-hour” since they were installed in January because he was waiting on his utility to approve the connection.

After Musk asked Winton if he had Powerwall he replied: “Hmm. Yes have powerwall. Everything right now is switched off; just awaiting LADWP [Los Angeles Department of Water and Power].”

Musk’s decision hasn’t come entirely out of the blue. He said during Tesla’s fourth-quarter earnings call in January that the company was focusing on integrating Powerwall with its solar division.

It also comes a week after numerous customers waiting for installations of Tesla’s Solar Roof product reported receiving new contracts increasing the price of installation by as much as 70%. It’s not yet clear whether including Powerwall in all sales of Tesla’s solar products will increase the price. Insider has emailed Tesla for clarification.

Are you a Tesla Solar Panel or Solar Roof customer? Contact this reporter at [email protected] or [email protected]

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