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Solar owners compare the mistakes they'd avoid, from undersized systems to skipped batteries

Some choices are much more difficult — and more expensive — to undo later.

Two people discussing solar panel options.

Photo Credit: iStock

Buying solar can feel like a one-shot decision: Pick the wrong equipment or system size, and the regret can linger for decades. That is why one Reddit thread drew so much attention — it asked current solar owners to explain, in hindsight, what they would change.

What happened?

A popular Reddit discussion centered on the original poster's question: "If you were installing a solar system today, what would you do differently?" The answers became a crowdsourced list of mistakes people wish they had avoided.

Commenters compared lessons about panel selection, inverter configurations, battery choices, and whether they should have installed a larger system from the beginning. A recurring takeaway was that the best setup has less to do with brand loyalty and more to do with how a particular household actually uses electricity.

Going solar is one of the best ways to save money on home energy over time. For shoppers still comparing options, EnergySage offers free tools to get quick solar installation estimates and compare quotes.


Want to go solar but not sure who to trust? EnergySage has your back with free and transparent quotes from fully vetted providers in your area.

To get started, just answer a few questions about your home — no phone number required. Within a day or two, EnergySage will email you the best options for your needs, and their expert advisers can help you compare quotes and pick a winner.

The Cool Down may receive a commission on signups made through links on this page, but we only promote partners we vet and believe in. For more cool tips like this one, check out our solutions marketplace here.

Why does it matter?

A solar installation is a major home upgrade, and some choices are much more difficult — and more expensive — to undo later.

Changing an inverter, expanding a system, or adding battery storage after the fact can entail extra labor, permitting, and equipment costs that stronger upfront planning might have prevented.

Solar savings are real, but a system still needs to match a home's specific needs. 

What can I do?

If you're still sorting through installer pitches, EnergySage can help you go solar with free tools that let you curate competitive bids from local installers without them obtaining any of your contact information unless you choose to work with one further. 

FROM OUR PARTNER

Save $10,000 on solar panels without even sharing your phone number

Want to go solar but not sure who to trust? EnergySage has your back with free and transparent quotes from fully vetted providers that can help you save as much as $10k on installation.

To get started, just answer a few questions about your home — no phone number required. Within a day or two, EnergySage will email you the best local options for your needs, and their expert advisers can help you compare quotes and pick a winner.

EnergySage's free services can also make the shopping process less overwhelming. With EnergySage's help, people can save up to $10,000 on solar purchases and installations. That can be especially helpful for buyers trying to avoid the exact hindsight mistakes described in the thread.

EnergySage's solar map shows the average cost of a home solar panel system on a state-by-state level, as well as details on solar panel incentives for each state. Together, these resources can help readers get the best price for rooftop solar panels and access available incentives.

Adding battery storage to a solar setup is one of the best ways to protect your home during outages, save on energy costs, and go off-grid. Readers interested in that route can explore EnergySage's free tools for information about home battery storage options, including competitive installation estimates.

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