{"id":85970,"date":"2024-09-09T13:00:18","date_gmt":"2024-09-09T03:30:18","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=85970"},"modified":"2024-09-09T18:09:52","modified_gmt":"2024-09-09T08:39:52","slug":"why-tilt-fames-2024","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/why-tilt-fames-2024\/","title":{"rendered":"Why Solar Tilt Frames Can Still Make Sense In 2024"},"content":{"rendered":"
\"angled

We’re headed back to the future, despite the stamp, this was a frame for 1kW in December 2007<\/p><\/div>\n

When the Earth was young, feed-in tariffs were 44 cents, and solar panels were $5 per watt, we spent lots of time building angled frames, facing them in exactly the right direction for maximum yield. These days, with bargain panels wholesaling for under $0.25 per watt, you just buy more of them. So, are angled frames dead? I think not, but let’s explore why.<\/p>\n

That Was Then<\/h2>\n

So, for those who’ve done solar design and installation qualifications, one of the fundamental points you learn is that peak solar irradiance is captured somewhere very near the North<\/a> at a pitch related to the latitude of your address.<\/p>\n

For remote area systems, we used seasonally adjustable arrays set up at 45\u00ba or more to try and catch as much precious winter sunshine as possible. We’d show the customers how to lay them back flatter to get more summer yield, but this seldom happened because in summer, you had plenty of sun hours, so there was a surplus of energy in any case.<\/p>\n

For a grid-connected system around Adelaide, at 20 or 30\u00ba pitch, there’s little difference in yearly yield. In fact, for summer solstice, I think 5\u00ba south was the optimum angle at midday. And let’s not forget tracking arrays. Introducing moving parts to make solar panels chase the sun across the sky every day is a great way to capture 30% more yield and make perfectly reliable solar into a pain in the arse.<\/p>\n

\"failed

Install tracking solar they said… it’ll be fun they said<\/p><\/div>\n

This Is Now<\/h2>\n

Now solar panels<\/a> are so cheap, the optimal direction for panels is basically \u2191up\u2191<\/p>\n

So long as they’re not in the shade, you put them up on the roof, and they create energy. It’s actually been difficult to get some old solar designers to put down the protractor and realise pitched angle frames are no longer needed to improve yield per se.<\/p>\n

Framing An Example<\/h2>\n

This petrol station uses vast amounts of electricity. Installing 100kW would be ideal. Though it wouldn’t meet the demand, it certainly helps lower bills. We had three problems with this job.<\/p>\n

\"Solar

No solar on the red canopy over the petrol pumps. The purple roof required 2% more budget and was deemed too expensive.<\/p><\/div>\n

Firstly, the short-sighted bean counters wouldn’t buy a little extra control hardware to use the car wash roof. They had a hard threshold for return on investment.<\/p>\n

Secondly, the roof on the main building was littered with refrigeration and sloped 3 degrees South.<\/p>\n

Thirdly, the salesperson, who shall not be questioned, was absolutely fixed on the idea it had to face north, so she specified angle frames.<\/p>\n

\"Partially

Cardboard cartons provide much-needed shade for electricians. Thank dog, we don’t have to wire up roof-top isolators anymore.<\/p><\/div>\n

The upshot was we only ended up at 231 modules for around 72.7kW. The system was smaller because we had to waste real estate on inter-row spacing.<\/p>\n

\"optimum

For mathematically challenged roofers, the inter-row spacing to avoid rows of panels shading each other (dimension Y) is roughly 1\u00bd or 2 times dimension X.<\/p><\/div>\n

Laid flat on the roof, there would simply have been more panels generating more energy. Plus a faster install using less material may even have paid for the extra hardware needed to put more capacity on the other building.<\/p>\n

With a flat-on-the-roof design, facing 3\u00b0 south, it’s feasible to have 308 modules and 97kW, so that kills the notion of angled frames, right?<\/p>\n

Getting The Angles Right<\/h2>\n

We’ve written before about the benefits of self cleaning solar.<\/a> Having pitched frames means they will stay cleaner and so yield more every single day. In fact the rules for solar installation state that if you have less than 10\u00ba slope on your panels, there must be a written warning in the handover pack to alert owners that they will need more maintenance.<\/p>\n

Angled frames also mean you have no worries <\/a>with warranties. When panels are laid flat, they don’t drain properly, which effectively means the bottom edge spends half it’s life standing in a puddle. The risk is that water has an opportunity to seep into the panel and cause earth leakage faults.<\/p>\n

The Right Direction Is Up<\/h2>\n

With Time of Use metering, it makes sense when people say East is the new North. The price of electricity at my house triples <\/em>at 3pm, so I’ll argue West is so fashionable, it’s the new black. In fact even panels facing South make more sense in Melbourne than they do London.<\/a><\/p>\n

If you’ve got a flat roof, then the best way to install solar is a “crinkle cut” array.<\/a><\/p>\n

\"east

An East\/West ‘crinkle cut’ array on a flat roof.<\/p><\/div>\n

Panels facing East and West on pitched frames will stay cleaner, run cooler and offer more room for maintenance. Better yet, you’ll get more panels into the same roof space, which means you’ll generate more electricity at more valuable times of every day.<\/p>\n

Flat Solar Is A Mugs Game<\/h2>\n

The only downside to “crinkle cut” solar is a little more upfront cost. Getting local council planning permission might be a pain, but the framing and installation itself should only cost an extra 25% at most\u2014around $250\/kW or $1500 on your 6.6kW system, in my experience.<\/p>\n

It sounds like a lot until you factor in professional cleaning at $200 every six months. Those bills will exceed the cost of angle frames in four years. If the array gets clogged with leaf litter and pigeons,<\/a> removing the solar to clean the roof will easily cost $1500, whereas you can clean under a pitched frame, even if only one panel needs lifting for access.<\/p>\n

Tune in next week, and I’ll run through a detailed comparison of the petrol station mentioned above. There are a few numbers to digest and an explanation of how your solar installer can design it from a desktop and calculate a return with remarkable accuracy.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

When the Earth was young, feed-in tariffs were 44 cents, and solar panels were $5 per watt, we spent lots of time building angled frames, facing them in exactly the right direction for maximum yield. These days, with bargain panels wholesaling for under $0.25 per watt, you just buy more of them. So, are angled […]<\/p>\n","protected":false},"author":28,"featured_media":86483,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[57],"tags":[],"class_list":["post-85970","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-installation","entry"],"acf":[],"yoast_head":"\nWhy Solar Tilt Frames Still Beat Flat Roofs In 2024<\/title>\n<meta name=\"description\" content=\"Solar panels are more affordable than ever, but does that mean pricey solar tilt frames are a thing of the past?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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He\u2019s a licensed electrician, builder, roofer and solar installer who for 14 years did jobs all over SA - residential, commercial, on-grid and off-grid. A true enthusiast with a skillset the typical solar installer might not have, his blogs are typically deep dives that draw on his decades of experience in the industry to educate and entertain. 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Any solar is better than none in Australia, and with the advancements in technology\u2026","rel":"","context":"In "Solar Panels"","block_context":{"text":"Solar Panels","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-panels-2\/"},"img":{"alt_text":"Roof orientation and solar power in Australia","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/08\/south-facing-header.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/08\/south-facing-header.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/08\/south-facing-header.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/08\/south-facing-header.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/08\/south-facing-header.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":81187,"url":"https:\/\/www.solarquotes.com.au\/blog\/self-cleaning-solar-panel-pitch\/","url_meta":{"origin":85970,"position":1},"title":"Self-Cleaning Solar: Why You Should Avoid Flat Solar Panels","author":"Anthony Bennett","date":"February 7, 2024","format":false,"excerpt":"You may have heard that flat solar panels require regular cleaning, but those angled at 10\u00b0 or more don't. 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Flat Solar Panels Get Flat-Out\u2026","rel":"","context":"In "Solar Installation"","block_context":{"text":"Solar Installation","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-installation\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/dirty-panels-header.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/dirty-panels-header.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/dirty-panels-header.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/dirty-panels-header.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/dirty-panels-header.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":1796,"url":"https:\/\/www.solarquotes.com.au\/blog\/solar-panel-tilt-frames-are-they-worth-it\/","url_meta":{"origin":85970,"position":2},"title":"Solar Panel Tilt Frames: Are they worth it?","author":"Finn Peacock","date":"July 15, 2012","format":false,"excerpt":"To tilt or not to tilt your solar panels. That is the question.","rel":"","context":"In "Solar Installation"","block_context":{"text":"Solar Installation","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-installation\/"},"img":{"alt_text":"tilt frames for solar panels","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2012\/07\/tilt-frames1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":70857,"url":"https:\/\/www.solarquotes.com.au\/blog\/best-solar-panels-2023\/","url_meta":{"origin":85970,"position":3},"title":"The Best Solar Panels In 2023: According To Aussie Installers","author":"Finn Peacock","date":"February 13, 2023","format":false,"excerpt":"For three years now, we've asked our network of 500+ solar installers what brands of solar panels they'd choose to install on their own homes. 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