🎙️EP10 – How Big Should Your Solar System Be? With Oli from Zinc Electrical
Only Panels - Solar Installer ChatsShow Notes
In this episode of Only Panels, Michael and Dan are joined by Oli from Zinc Electrical to unpack one of the biggest questions in solar: how do you size a solar PV system properly? We kick things off with highlights from Elex Coventry — including the Safe Isolate stand and plenty of installer chatter — before diving into real-world solar design. Topics we cover: Should you design a solar system based on household consumption, maximise roof space, or stick to a set budget?
The “120% rule” explained – why oversizing panels or inverters can actually improve performance.
Inverter sizing myths: why a smaller inverter can sometimes generate more power over the year.
Battery storage challenges – charge/discharge rates, hybrid inverters, and when to add batteries later.
Real-life analogies to make sense of kWp, kWh, and inverter ratings (think: car top speed vs speed limit 🚗⚡).
How to future-proof PV systems for EV charging, heat pumps, and growing family usage.
Oli also shares his personal journey: leaving corporate IT sales, training with Oval Renewables, and eventually launching Zinc Electrical. We talk about the realities of being a one-man-band installer, the importance of community in the UK renewables sector, and balancing business with family life. Whether you’re a solar installer, an electrician moving into PV, or a homeowner thinking about solar panels and battery storage, this episode gives you practical insights into how systems are really designed — and why no two installs are ever the same. 📺 Watch on YouTube🎧 Listen on Spotify, Apple & Google Podcasts #Solar #SolarPanels #Inverters #BatteryStorage #Renewables #OnlyPanels #Podcast #InstallerLife #SolarDesign #SolarPV #HeatPumps #EVCharging
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Cory Mac from Oy Electrical called the plug-in solar brands "sellouts" and planned a video on why he wouldn't touch it. Then installers across Europe got in touch, and he went to Germany to see real systems for himself.
Is plug-in solar a sellout or the entry point to renewables for millions of UK homes? Live from the LONGi stand at Solar & Storage Live 2026, Dan Holliday and Michael Stott sit down with Aaron from Anker SOLIX. YouTuber Cory Mac from Oy Electrical explains why he called the plug-in brands "sellouts", then went to Germany to see it for himself.
🎙️ Welcome to Only Panels – Solar Installer Chats, the podcast for solar PV professionals and enthusiasts.In this episode:🔹 Season 3 starts here! Back in the DMH office, Michael and Dan decompress after hosting the Only Panels podcast on the LONGi stand for all three days of Solar & Storage Live 2026 at the NEC, with 60+ guests across installers, manufacturers and industry bodies.🔹 Is plug-in solar really the story of the year? Michael and Dan's take, and why they're calling it "entry-level solar".🔹 Solar Skirt Eco and the new mechanical fixings: what's new, who it's for and where to get it.🔹 Anti-glare panels: Michael's call for the product of 2027, plus LONGi's Hi-MO X10 and X12, and self-extinguishing, non-combustible panels.🔹 Favourite guests, A121 Training's roof training, and what's next at Elex in Coventry.Shout out to LONGi for hosting us on their stand at Solar & Storage Live.Hosts: Michael Stott (East Renewables) & Dan Holliday (DMH Electrical and Renewables)👍 Like, subscribe & drop a comment: what's your product of 2027?📍 New episodes every week – subscribe so you don't miss out.🎧 Also available on Spotify, Apple Podcasts & all major platforms.👉 Join the conversation:YouTube: https://youtube.com/@OnlyPanelsPodcastSpotify: https://open.spotify.com/show/6hK6YjzSti3iQrKDOuDXeaLinkedIn: https://linkedin.com/company/onlypanelsTikTok & Instagram: @onlypanels00:00 Is this the product of 2027?00:17 Hosting from the LONGi stand03:02 Plug-in solar and "entry-level solar"06:30 Solar Skirt clips and the new Solar Skirt Eco11:01 Anti-glare panels: Michael's product of 202714:18 Self-extinguishing, non-combustible panels15:46 Favourite guests and A121 Training roof training19:44 Elex Coventry and the pub quiz21:07 Welcome to season three#OnlyPanels #SolarAndStorageLive #LONGi #PlugInSolar #AntiGlarePanels #SolarSkirt #SolarInstallers #UKSolar