Is It Necessary to Remove Solar Panels for a Roof Replacement?

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In summary, this article discusses mistakes and flaws in solar panel project design and installations, including recent news about Tesla having to shut down installations due to fire hazards. The key takeaway is the importance of proper training and attention to small details in this rapidly growing industry. The article also addresses how to handle roof replacements when solar panels are installed.
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anorlunda
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TL;DR Summary
Article reports numerous faults in solar panel installations.
https://pv-magazine-usa.com/2019/09/19/solar-power-installation-techniques-dont-do-this-w-pictures/
I'm sharing this article because it is so rich in details and photos regarding mistakes in solar panel project design and installations. The faults reported sound very mundane, yet important for safety and for money reasons. They discuss both residential projects, and commercial solar farms.

The topic is in the news recently because Tesla had to shut down solar installations on hundreds of Walmart stores because some of them caused fires. The flaw was said to be inadequate wire connectors.

To me the takeaway is that this is a new and very rapidly growing industry. Training designers, project managers, and field installers about the codes is falling short. Building inspectors also need good training to spot such flaws. I suspect a shortage of adequately trained trainers.

The takeaway for PF members is that in addition to big issues like climate change, small details are also vital. Lack of attention to the small details could derail an entire industry.
 
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If a house has a shingled roof, how would the roof be replaced if there is solar array installed on top of it? Must the solar array be removed?
 
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Stephen Tashi said:
If a house has a shingled roof, how would the roof be replaced if there is solar array installed on top of it? Must the solar array be removed?
Good question. Looks like you do indeed need to pull off the panels for the re-roofing job...

https://news.energysage.com/solar-panel-roof-replacement/
1569104620929.png
 

1. What are the common pitfalls in PV installations?

Some common pitfalls in PV installations include improper system design, incorrect placement of panels, inadequate wiring and grounding, and poor maintenance.

2. How can improper system design affect PV installations?

Improper system design can lead to underperformance of the PV system, resulting in lower energy production and reduced cost savings. It can also cause safety hazards and potential damage to the system.

3. What are the consequences of incorrect placement of panels in PV installations?

Incorrect placement of panels can result in reduced energy production due to shading or poor orientation. It can also cause structural issues and potential safety hazards if the panels are not securely mounted.

4. Why is wiring and grounding important in PV installations?

Proper wiring and grounding are crucial for the safe and efficient operation of a PV system. Inadequate wiring can lead to overheating, power loss, and potential fire hazards. Poor grounding can cause electrical shocks and damage to the system.

5. How can regular maintenance prevent pitfalls in PV installations?

Regular maintenance, such as cleaning panels and checking for any damage or malfunctions, can help prevent common pitfalls in PV installations. It can also ensure that the system is operating at its optimal efficiency and identify any potential issues before they become major problems.

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