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Hello Bonus is in and it gives me just enough to install some solar on the roof. Based on my usage needs I can do with pretty much all I can get . Although I'm all low power & LED I do have a few luxuries that it would be good to power with solar when/where possible and off grid (Currently on hook up but don't see that as necessarily lasting forever) I've started coming up with a plan to help me identify what I don't know. My first pass is below and I have already identified a few questions that I need to answer. I've spent a little time reading up on the forums and have experience of building a small set up a long time ago (To power a caravan) but definitely need to get myself educated on the subject. What are your thoughts on game plan below? Are you able to point me in the right direction with any of the questions I have identified thus far? 1. Design top boxes - Come up with a design for ‘sloped’ wooden top boxes with solar panels embedded in the top (to match lines of existing DB style dog box) 2. Map out roof and all fixed location extrusions - Including ‘to be’ pump out location (Another DIY task) 3. Identify optimum solar panels and box design that matches both electrical and aesthetic requirements (See a bit of back and forth comparing panel characteristics/sizes and lumps on the roof before settling on something) - Q: Any ideas on how to mount centre lines to roof with sufficient strength on port and starboard side? I have spray foam insulation and design that makes removal of internal roofing a PITA so anything that gets around both would be great! - Q: Does anybody have a top box with solar panels that also had a mushroom vent underneath? Does the temperature under the panels cause any issues with circulation? (Assuming not?) - Q: Any recommendations on good places to read up on different panel types and how to select right ones for needs and how to match to MPPT controller and installation design (Thinking max voltage considerations vs temperature etc.) 4. Identify optimum wiring of the panels to MPPT - I’m going to be using MPPT. Don’t yet know whether I will be wiring panels in series/parallel etc. or single vs multiple controller - TBD Q: Does having panels pointing in different directions (Like the doors on a dog box) create additional wiring considerations? 5. Identify optimum wiring of the MPPT to batteries - I’ve got a Victron Multiplus 12/3000/120. - In scenario where plugged in to mains I’d like solar to take priority and charger only to kick in if batteries discharging because solar not providing sufficient charge. - Q: Is that possible? - Q: If not, what’s the forums view on second best option (Looking for automatic rather than relying on me to check voltage, switch on/off chargers etc 6. Buy the stuff and build Apologies, looking back that is a lot of questions. Hopefully others have got or will have similar questions so this isn't all about me!