An adult son in the United Kingdom said a trip into his parents' loft to store some boxes revealed a nightmare lurking behind a pricey home energy upgrade.

Instead of a neatly installed solar-and-battery system, he described displaced insulation, unsecured cables, and a 132-pound (60-kilogram) battery perched on rotten chipboard.

Here's what to know

Writing on Reddit, the son said his parents had spent £13,500 (about $18,000) on solar panels paired with a Growatt battery. However, a look inside the loft where the battery had been installed left him convinced the project had gone horribly wrong.

What alarmed him most, he said, was that the battery weighing about 130 pounds was resting on decayed chipboard over rafters that he said were not meant to carry that kind of load. He also said the insulation had been pulled back during the work and left mixed in with cable runs that were not secured.

Additionally, the pulled-back insulation had caused other problems, noting that his parents had been dealing with "condensation on the ceilings at the front of the house."

The shoddy work did not end there. According to the post, debris from the job was never cleared away. The original poster explained that the gutters were left with scrap material inside them, including a 6-foot piece of panel rail that had since collected dirt and plants, preventing the gutters from working properly.

Finally, the OP complained that the installer had not responded to his emails and had not followed through after telling him on the phone that someone would call back.

More background

Adding battery storage is one of the best ways to protect your home during outages. Battery backup can also help households save money on energy and even go off-grid by storing solar power for later use.

If you're considering a setup of your own, it may be worth exploring EnergySage's free tools to get information about home battery storage options, including competitive installation estimates. EnergySage has teamed up with the electrification brand Qmerit to guarantee you get the best price on home battery storage solutions.

For all of the potential benefits of solar and home batteries, the OP's situation shows how irresponsible business decisions in the clean-energy market can undermine technology that should make life easier and cheaper.

A poorly handled install can create structural concerns, fire risks, moisture problems, and cleanup costs that families never expected when they signed a contract.

What can be done?

Homeowners who suspect a bad installation can start by documenting everything with photos and written notes, then requesting an independent inspection from a qualified solar professional or electrician.

If weight-bearing supports, wiring, or fire safety are in question, local building-control offices or consumer-protection channels may also be able to help.

To prevent problems before they happen, homeowners can start by asking detailed questions of their installers. Prior to work being done, customers should have a clear understanding of where batteries will be mounted, whether the surface is rated for the load, how insulation will be restored, and whether post-install cleanup is included in the scope of work.

For shoppers who want backup power but are not ready for a full-home system, Pila offers excellent options. Its plug-and-play batteries are priced at a fraction of what a whole-home backup system would cost.

As for the OP, the risks associated with the shoddy installation at his parents' home were clear: "House fire or worse is just a matter of time at this rate."

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