A savvy homeowner's solar investment is turning heads online — not just for how much power they're generating but for the surprising financial math behind it.
In a detailed post shared to the r/Portland subreddit, one Redditor broke down the installation of their 12.42-kilowatt rooftop solar system, explaining why they chose panels over the stock market for a major chunk of change.


"Solar can be very lucrative financially," they wrote, comparing the long-term returns of going solar to investing the same $20,000 into the market. "If you put $20K into a solar system … you now have what would've been your electric bill to put in the market."
Beyond the impressive power production, what's getting people talking is the financial math. After factoring in the 30% federal tax credit and a utility rebate from Portland General Electric, the system cost came to around $20,000, with a projected payback period of just 10 years.
Going solar is one of the best ways to shrink home energy bills while also cutting down on the heat-trapping pollution that's warming our planet. And with free tools from EnergySage, it's easier than ever to see how much you could save. EnergySage lets you compare solar quotes in your area and get instant estimates, so you can make an informed decision before ever signing a contract.
The Redditor also pointed out that if you compare the savings from avoiding a rising electric bill with what you'd gain from a traditional investment account, solar comes out ahead — especially if you reinvest your energy bill savings each month.
What makes now such a smart time to act? The current 30% federal tax credit — also known as the Investment Tax Credit — is going away at the end of the year. To claim the full benefit, homeowners must complete installation before Dec. 31. With EnergySage's help, the average customer can unlock nearly $10,000 in incentives, making solar significantly more affordable.
To sweeten the deal, EnergySage also offers a free solar mapping tool showing what panels cost in your state, plus the rebates and perks you could be eligible for — all in one place. Together, these tools can help you score the best possible price and avoid missing out on valuable incentives.
Redditors were quick to jump in with their plans of going solar.
"I have been considering solar for a while," a commenter said.
"Congrats on going solar!" another said in celebration of the win for the planet and the OP's pocket.
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