Solar Panel Comparison: What to Consider Before Buying
HTML-код
- Опубликовано: 6 авг 2024
- Before buying solar panels for emergency preparedness, there are several different options you should consider. In this video, we'll look at some of the typical categories of solar panels to help you decide what's best for you. Sign up at bit.ly/34futCW to get member-specific content in our weekly newsletter.
Solar generator playlist: bit.ly/35fo2z1
Off-Grid Trek Solar Blanket
* Visit Off Grid trek at bit.ly/3GeQEc4 and use coupon code "cityprepping" for 10% off your order.
** 200W solar blanket: bit.ly/2SC2ucX
** 110W solar blanket: bit.ly/3iQHUkj
** 28W solar blanket: bit.ly/2SogKXa
Powerfilm 110W
* amzn.to/35fokpB
Inergytek solar generator and solar panels
* bit.ly/3dYlvMf
Jackery solar panel
* amzn.to/3vlopTa
Ecoflow solar panel
* amzn.to/2SmC1QZ
Follow me on:
Instagram - / cityprepping
Facebook - / cityprepping
Twitter - / cityprepping
Visit online - www.cityprepping.com
Sign up at bit.ly/34futCW to get member-specific content in our weekly newsletter.
I would like to buy a portable solar generator. Fould you do a video on them. There's so many and I'm not sure which one I should get. I would like to use the portable generator for if my power goes out I don't lose everything in my freezer and refrigerator
Thank you so much.
@@berniesully9173 i've covered a lot of them here: bit.ly/35fo2z1
@@CityPrepping Thank you I'll check them out
I'm getting 3.6kwh of solar installed at my new home with 1 battery. Still grid tie in with option to go off grid. Its 10 panels. We'll have the option to add more batteries and panels in the future.
We got 3.5 acres. Are own well and septic. Getting a 8x20 green house installed. And even thinking about a small barn with 2 goats a donkey and chicken coup all on the same enclosure. The donkey is to protect the other animals from predators. Donkeys are mean and dangerous to foxes, coyotes and lynx. And can warn you of predators. So you can get out there with your rifle to deal with wolves, cougers and bears.
Why don't you buy me some and I'll let you know how well it goes
Just got a jackery, my husband doesnt know 🤫. I'm waiting for when we need it to be like see we should have bought it... then bust it out 🤣 I'm the prepper in the family
Me too! I have preps hidden just for the purpose of dazzling him with my ability to preplan.
@@marge3863 he makes most of the money but it's kinda like my money is my money and his money is our money so sometimes he doesn't know what I have. Hes definitely not a prepper but he just let's me be crazy and puts up with it lol. I keep telling him when shtf you'll be glad you married the crazy prepper lady
If my wife doesn't have this attitude, i don't want it!
@@kristinec212 Brilliant i can relate to that 😂😂😂
Where do we find women like this???
I am a mom of 4 and a newbie at all of this. Perhaps if you could put out a “for beginners with zero knowledge” video to show us how to connect the panels to a source? What wires go where and how to actually plug things in. How to connect to a solar generator and how and where to access the power needed. Sounds trivial I know but I’m sure there are more individuals like myself who could benefit from step by step dumbed down instruction. Appreciate your content!
you should go check out this channel "DIY Solar Power with Will Prowse" put all that in the search bar his channel has tons of how to on solar for newbies
See HOBOTECH RUclips channel too. He has a video about this.
If you want the simplest and easiest way to deal with this I'd go Jackery.
You pay extra but get easy as can be setup and take down. Plus it's rugged.
Other systems can give more bang for the buck but you do give up the ease of use and/or quality.
Size of system can make huge differences in what you can do with it.
I personally like the 1000watt (or more) so you can use a cheap microwave to heat water.
This size also uses more than one panel so if one goes down you still can make some power.
500w will work for medical purposes cpap/nebulizer including a mini fridge to keep meds cold if needed.
It's also good for a small swamp cooler in a window.
Anything less is just to charge electronics for communications, lights or small fans.
Hope this helped.
@@IrelandVonVicious thank you so much for this information!!!
@@sherryakuta No problem. One more thing to consider is Jackery's don't have a lot of charge cycles (500) as they are bit older battery technology. But if you want a year of electricity with setup that is super easy to understand it's worth it.
The 1000watt is hard to find in stock (highest recommend) and the 1500 and up need too many panels. Jackery panels cost a lot compared to many others.
If you want something that is more for years of camping go with something that has more charge cycles. The same watts mentioned for your needs still apply.
I think the main thing that preppers need to understand is the difference between small systems that are good for camping, powering your phone and a few light bulbs VS. large systems that will actually power your house. I see a lot of videos (not this one) that mislead folks into believing that small systems are going to hold them up when SHTF. For reference, you need to look at about 10,000-20,000 Watts of solar panels, 20-40kWhrs of battery backup and 8,000-10,000 Watts of inverter to run 80% of a typical house.
excellent point! I'm going to do a video shortly about the new setup I'm currently building for my house: 8kW of solar panels with a 12kWh battery backup system. definitely, a HUGE difference between a small solar generator and a whole-home battery backup system.
Agreed, but running the whole house is way beyond most people's ability and finance. I believe that a compromise between a 'basic' system like the ones featured here and a more robust one that will actually power critical things (frig, fan, lights, quick coffee) for an extended outage is more useful for the typical prepper. The usual falsehood is that the battery system can be recharged quickly on just a few hundred watts of solar with limited solar hours. Some of these will crank out enough energy to run a host of things for an hour or two then you have to recharge for maybe 2 sunny days to get back to where you started. Not a practical multi-day event solution in my opinion.
My man David Armstrong knows what he's talking about, Most likely the most experienced person here when it comes to this topic
@@CityPrepping Please include the concept of a "low power mode" for homes, like the option you have when your phone battery is nearly depleted. In a disaster with unknown duration, you should already have a plan to only power necessary items, when necessary, to maximize your run-time and minimize recharging needs.
@@MattPritchardOfficial in most parts of the US solar panels are unreliable - your best. Bet is a hand crank generator for charging a phone or a pedal power genarator - but I warn u they have to be cranked continues for long periods to charge a phone - if u do have good Sun as in the South west a 20 watt folding solar panel set up for charging phones and other devices will work - look up John Casey & Dark Winter on you tube - as we have more volcanos during the next 30 yrs there will be a significant drop in UV light from the Sun - solar panels in the south west might only put out 10 % of there out put - in the deep south Central US on an average day solar panels only generate 15 % of there out put on a clear sun day the humidity defuses the Sun's UV light that panels need - only Thin Film solar panels work ok in this area - they generate some powered on overcast & cloudy days but not much & 12 % full out put at noon day for 2 hrs or so - but generate some power the intire day
One of the most important pieces of advice for people new to solar panes is, don't freak out when your amp output suddenly drops to .5 even in full direct sunlight. It just means your battery is charged. Took me two frustrating days to figure that one out.
Perfect timing. In the process of purchasing. Thank you!
You are so welcome! hope it serves as a primer when shopping them.
Watch Will Prowse before buying
Considering the current state of world affairs, we should all have at least a solar generator for our refrigerator, and maybe a small solar generator for charging the phone, a lamp or a small fan.
I did.
I bought a Bluetti EB70 and a 5 cubic ft manual defrost Hanai chest freezer. It powers it easily. I bought two 100 watt solar panels that I can connect in parallel to charge it. I also have a Rockpals and Golabs that are both 300 watts but they won`t power a small AC fridge or the freezer because the surge from the compressor overloads them. But I can charge them while the Bluetti powers my freezer and dump their energy into it in the evening using its 200 watt AC charger to keep it going. I`m told that using a timer that only runs the freezer for 30 minutes every four hours will extend the battery of a power station but still keep food frozen.
@@baneverything5580 I just got my bluetti 70 and ordered a dc powered portable fridge myself. Now my food will stay fresh
I have been a subscriber for several years, but only recently started viewing more of your videos. I must say that your video's the last few months have been high quality productions with lots of information. Thank you for your work in producing these video's.
I couldn't have asked for any better timing on this video, Thank you. I've been looking at solar panels for the past 2 days trying to figure out what is the best for me, my needs and my budget. So much to consider. You have saved me many hours of sorting out options.
Yes my husband and I are looking into this for our apartment freezer 7.0.
Very helpful information. I also consider location of panels, cleaning, and upkeep of panels, when selecting panels. I created a few custom DYI 100W in the past.
I'm just coming out of a 24 hour power outage and have been using my Goal Zero Yeti 1250 for many years. But because of the increased frequency of outages, I'm looking to add or upgrade to my current system, so I appreciate this timely video!
Thank you.
Yes huge learning curve with panels.
Their is a big difference difference between rated wattage and reality and then mix in actual use.
Great Video! I have the inergy Apex with 4 flex panels and 1 hard panel on my shed roof. Works really well when the power goes out it can keep my fridge powered up, so I am happy.
I went with a major name brand solar panel Kyocera solar.
I have a small off grid cabin, so 12 volts is good enuf, instead of 24 volt.
600 watts is more than enuf for my cabin. 6000ft elevation, so no AC needed in summer time. Runs my TEN TEC ARGOSY 525 and thats all I need for hf communications. Using a Morningstar 30 amp charger. 6 volt batteries that are now 9 years old. The trick is never take them down below 50%. Otherwise, you take life away out of them.
I bought used panels off Craigslist. 120watt Kyocera solar panels. Good deal!
thank you. this video helps a lot, i have been testing different brands to find what would be best on roof tops.
We were JUST discussing this! Thank you!!! PERFECT timing!!
Regarding the Inergy Solar Panels, they are configured in a proprietary fashion with EC8 connectors that really only makes them usable with Inergy products. They are wired to daisy chain together to an Inergy Kodiak, Apex, or Flex unit. There is no positive or negative wire like you find on solar panels traditionally.
Thank you CP. excellent timing g as I just purchased the Intergy generator.
Excellent video. The efficiency of info being condensed in this one is incredible. You should review more items and make a review channel. Your really really good.
I'm glad to have solar for a hobby, starting about 6 years ago. I personally found flexible sun power panels to be most efficient and lightweight while giving good value for the $. The down side is they aren't as tough an option, so you have to be careful with them.
A few tips for those learning. Buy the silver bubble wrap style insulation, and use it to refract more light into panels you already have for super cheap. Save weight, increase power output, and make use of what you already have to the fullest extent. In the years I've tested and played with this "cheat" I've had zero I'll effects with many type panels. I've proved some serious gain in output using this simple method. As in 50+% output, consistent. Maybe reduce panel life over extensive time, but worth the mention. Mppt solar controller is a MUST. Worth the $ for making full use of the panels you intend to use.
Also, check out diy solar projects with Will Prouse. Excellent channel for in-depth reviews on storage and solar, giving you the best value for the $ possible. Highly recommend, just as this channel.
Seriously looking at fixed panels. Thanks for sharing these options. I haven’t landed on a power bank yet... so, the search continues.
Great info and timely as I'm picking up a couple panels next weekend. This explains a lot without making me feel stupid. Thanks!
knowing is half the battle :) glad i could provide you with some hopefully useful information when deciding which option you want to pursue.
I think you meant "parallel" (vs series) earlier in the video around 1:30. In parallel, when one panel is shaded, the system still works. In series, when one panel is shaded, it drops the whole system.
Great video I'm looking into getting a solar generator it was really helpful. Thank you for the great information!
I've been experimenting with a variety of these devices. When you decide to go solar, define your needs first. Optimize those needs to reduce power requirements, then find the products that will meet them. If you take heating (from a pot of coffee to a living area) off the table, it's amazing what you can run with just a few solar panels, from a 20W-30W folder for device and battery charging, to a couple of fixed 100W panels to run a refrigerator, laptop, and charge tool batteries.
@@robertpace901 I'm interested in long-term outages myself.
Based on its EnergyStar label, the freezer needs ~22W. Let's say 30W to account for non-lab conditions. Allowing for conversion losses, a single 100W panel should have no trouble powering it under "good" conditions, meaning mostly clear skies. Conditions are of course not going to be good all the time, and they will be worse much more often than they will be better; I'd probably use a minimum of 200W of panels charging a power box that would run the freezer. Additional panels would charge another box being used for tool and general battery charging.
The freezer would have alternating 2-gallon jugs of water placed in it, which would go into the regular fridge (turning it into an "icebox") on alternate days.
Some of my estimates come from a test I did a while back, where a single 100W panel was not quite able to keep up with the demands of a 45W compressor cooler; the day was mostly cloudy with rain sprinkles, quite far from "good" conditions.
@@robertpace901 They're pretty much universal, with one of a few types of standard connectors (MC4, Anderson Powerpole, or SAE) used. Adapters to a barrel connector are typically provided, if needed, and adapters for the other types are readily available.
@@robertpace901 I visited their site, and it looks okay, except I really can't tell what cell type they are using. I've pretty much decided that my future purchases will be LiFePO4, and I don't think these are. Ask them about the cells they use.
@@robertpace901 Subtract all those devices that heat; their power requirements are immense. As LF73 had said, use wood or propane; heck I think he suggested burning old shoes before trying to cook with a solar generator. Get a Kill-a-Watt to test your freezer; if it is efficient, it may not use too much power despite its size, but you really need to know that to determine how many panels you will need. For permanent outdoor use, you will want rigid panels like the Renogy.
@@robertpace901 I would hate to advise something that ought to work, because the freezer "should have" low requirements, but doesn't. Until you get that Kill-a-Watt (a useful tool anyway), take what I suggest with a grain of salt.
Portability raises the price a lot on panels. A power box with 1000W surge and 500W running should handle the freezer, actual run time depending on actual use and the size of the power box. Dokio makes a 300W folding panel; I bought one, but have not tested it yet.
THANKS FOR THIS!!! I was going to buy one for my milin 622w
Good info, I've been thinking about solar for a while now.
Thank you perfect timing I have been looking
What an awesome comparison. Actually the best I’ve seen. Unfortunately I need one so bad but I’m on an extremely limited budget and I’ve only been prepping and stocking food for about 7-8 months so I still have a long way to go. I still need water options so I need to figure out how I can get what I need
I have 6 harbor freight 100wat solar kits that goes to two 400 watt harbor freight couplers then runs to 7 ,100 amp hour 12vdc rv battery's inside a pie deck box 5x2 of the 2 charge controllers that came in the kit .the battery run a 1500 watt Jupiter inverter from harbor f.then piped it a box inside the house to a dpdt switch surface mounted boxes, one is a receptacle and one feed from house receptacle. I'd battery charged and full sun will run a apartment size refrigerator 2 days so I split the time 12hrs on solar and 12 on the bloodsuckers
I have found it depends on your location and how reliable your sun light is and your battery bank for storage. I have a gas generator as back up to charge my generator on the stormy days in winter. I strongly recommend a back-up if freezer is on line. I like solar and am looking forward to panel break throughs and Storage improvement.
thank you for the video city prepping!!
Good luck getting your hands on an Inergy flex anytime soon.. Ordered mine 14 months ago and was told they were 2months out to sending my unit due to them only shipping orders that were placed March 2020 at the moment. Had to get a a jackery 1500 to hold me off just in case for this years hurricane season. Hope they have been performing for those whom already received their units.
Thanks for the video. There are so many choices, and so few dollars. Making the best choice possible is more important than ever.
Very true!
Thank you for this concise and short video.
Thanks for all you do, and share information.
Great info for a beginner like me. Thanks!
Great content as always. Very informative. Thank you.
Started looking at solar! Very helpful video!
Good stuff. I really want to buy (2) of the off grid trek solar blankets to charge my inergy kodiak.
I'm also looking at the powerwerx 300 watt panels. Its sold out everywhere!
I got my 215 off grid Trek solar blanket and I use it with my inert apex. I love both products but I order the inergy flex 1500 in may of last year and I am still waiting for my system. I am still waiting patiently for my unit. Keep doing your videos they are very informative.
sorry you're waiting. every company i work with is having the same problem getting their products shipped out due to supply issues.
Excellent information, thank you for your thorough research and time to assist us all. God bless you.
You are very welcome
Thank you for the information.
Where there is will there is a way. And both those things exist under the sun. Great video thanks 👍
Thanks for this well documented video AND for including the great Off Grid TREK solar blankets. Also a bit expensive! but well worth it for the efficiency and features, I have the 220 watt Off Grid TREK solar blanket to charge my BLUETTI AC200 MAX lithium IRON phosphate battery for charging my E-CELLS e-mountain bike (and a cooler in my SUV).
BTW, Off Grid TREK now makes a 300 watt solar blanket. At about $2,000. you are buying the highest efficiency and most durability.
Thanks CP for another great video
Thank you for the links
Thanks CP!💜
I have 3 bluetti SP 120s I hope il get to test them out soon. for more long term mounting I am looking at the bouge rv 180s
Thanks for the info 😉👍 very informative All the Best Smith 🎣🍻
Thanks been in need of this info 👍🏼
Glad to help
Again, love the content and the “Zero” shirt.. SP👍
Still waiting for the Flex I pre-ordered last year; was looking into the powerfilm, however I am now intrigued by the off grid trek blanket. Looking forward to that video before I pull the trigger. Buy once cry once
> Buy once cry once ... exactly! the off grid blanket is definitely worth looking into. it's got a smaller footprint and produces the same amount as the powerfilm and is actually cheaper. it's my new favorite solar panel option.
When others have done these videos as you have, it's interesting to note that there is no mention of anything related to Goal Zero. They were the original introduction to this kind of tech. I jumped on the early bandwagon and bought one of their hernia Yeti's with an agm battery in them. Goal Zero had a great initial idea but with so many other decent players on the market with much more competitive pricing, Goal Zero seems to have fallen by the wayside.
For the majority of their products, their overall cost per watt is extremely high!
I'm a jackary fan and have a couple of the lithium 500 units but I'm now starting to lean toward ecoflow.
Perfect timing man!
Solar power is on our wish-list and not just for emergency preparedness. We're hoping that at some point we'll just be doing our thing and if there's a shtf situation, we'll barely notice. That's the goal anyway
I just got a folding 40wat. I was looking for something easy to pack but good enough to charge my baofeng radio and flashlights. Hope it works, if not I'll send it back and get a better one.
I started buying panels a few years ago. The latest buy was by far the best, on used one's on ebay by a company in AZ does specializes in such. Many solar panels farms get completely warranted and some are just fine to use for years and years, Take advantage of the cooperate write off and warranty stuff is my advice.
Excellent information, thank you
Glad it was helpful!
Great video, once again.
Thank You again!
Good info..
Last spring I purchased a 3500 watt system with 400 watt foldable solar (very happy). I waited as I thought a generator was the way to go. I now know that you need a combined system, both gas generator & solar.
Look into a small wind generator for nighttime production. Lots of maintenance though.
One good option is to look for not only solar but also wind to charge the system.. The one I'm looking at is natures generator... Lead acid batteries (the one downside) but it does offer an input for a small wind turbine to also charge the system....
Just bought 1
Youuuu should definitely offer me some feedback on performance when you have the opportunity to utilize it and test it out... Congratulations though, that's awesome... I'm definitely looking more heavily at getting that one, just practicing due diligence and researching other options to make sure I'm getting the best for my monies....
THKS
Great Video
The ecoflow looks like the best price on this list while still being pretty portable. I think you could still dip further into the affordability market with Harbor Freight’s options, but this still gives a good overview of what to expect.
Harbor Freight? Why would he tell someone to flush their money by buying their panel?
I am not sure if the EcoFlow on this video is 110W. I have one and it is four sections, not two as shown in the video. The EcoFlow is quite heavy at 13 pounds. If I had a Jackery I would much rather have one of those just for the weight and ease of use alone.
Hello I really appreciate all your helpful videos. I am new to prepping. We live in Arizona so it’s sunny all the time however we are very close to our neighbors so when TSHTF I want to be prepared and under the radar so it appears the solar way is the way to go. My concerns is powering a refrigerator and probably some kind electric cook-top. We have spent a lot of money on meat And I think cooking outside even with a propane camp stove would draw a lot of attention. Can you tell me what type of solar panels/generators would be good for this? Thank you
Thank you so much for trying to help but I have no idea what I should get. If I am just wanting to run three refrigerator freezers some fans and some lights what would I need?
More power Mr. Kris!
If you live in a low Sun area as in the deep south central inexspencive solar panel kits as Harbor Freight sells can work - the active material on those panels is very thin - an inexpencive solar panel might only handle a yr of sun in the south west and the material will brake down and the out put will sharply decrease - were the better panels can last for decades in full sun day in and day out - I know of panels that were installed on micro wave repeters 30 yrs ago that still generate full power in the south west
Excellent content!
Glad you enjoyed it
We've got the foldables! Would love to be considered for a feature some time :D
Great video
Excellent
this is perfect timing. i am looking for a panel to help charge a jackery that is power a fridge in the back of my jeep. does anyone have a suggestion for me to look at. jackery 500 and an iceco icooler.
If you sold the BugOut bags fully equipped and ready to go they would probably sell well👍
Thanks! Trying to figure out how to power my freezer without a generator in case electricity goes out. Guess I'd need two 200w ones and the battery.
I can power a 5 cubic ft manual defrost Hanai chest freezer with a Bluetti EB70 and two 100 watt panels wired in parallel. There are various problems though like cloudy days.
In this video, you stated panels will degrade in performance every degree above 77ºF. What's the best way to combat this in a sun-rich, hot environment like Phoenix, AZ?
Apparently theres a used market where you can get a 250w for only $50 a piece. Will prowse did a video a while back. Seems like a great cheap option for home based.
yeh, that's definitely worth looking into.
“Boots on the ground” (southern prepper 1) has much to learn from you. I like you both… But a collaboration is in order.
I just ordered a Bluetti eb70. I'm looking forward to receiving it. I need more solar panels though. Is there a way to daisy chain generators together?
I've checked my bank balance and my option is non of the above ...
I'd like to know which are the most affordable portable solar panels for when you need to leave the house asap with a backpack? Off grid one looks decent though but what other options are there.
May I ask which solar generator kit (including panels) that would be easy for me to operate. I am seventy and live in tornado alley where we have a lot of power outages. I am needing something to run a freezer and or refrigerator. Thank you for your help.
Really useful. Thank you. I was wondering the other day other than a small solar charger for the phone was there an option that was more portable, practical for camping or caravans. Don't get to hear a lot in the UK about the other options, as solar panels are only becoming more common in last 5 years. Other than solar lights, I only knew from American hiking channels about solar channels. Cheers.
Chargers for phones even lol!
Check out Renogy on Amazon uk
Ecoflow is giving hints of a 400watt portable panel in the near future. That blanket thing is crazy expensive.
What is the best solar system to buy for my French 3 door refrigerator? I live in a apartment but plan move in a home in the future. I am worried are a power outage. Thanks
What can you tell us about wind power/micro wind turbine
Would you recommend goal zero solar power kits? Thanks!
This might be a dumb question but I’m thinking of getting solar for my home. Are there alternatives? How do solar generators compare? Where I live in California we rarely have power outages but who knows what’s to come. Thanks God bless
What panal and piwer thing would be good to take to the beach at lake Michigan to give power to recharge cell phones and power chromeboojs to hVe a taste of home while waiting for july 4th fire works
Maybe an odd question but I have a small solar kit if I don’t have it plugged in or hooked up it’s just for emergencies would an emp or solar flare still fry the panels or the rest of the system?
Does anyone know what wattage panel I should use with a 80w portable solar generator/ power station? I'm currently looking at a universal 60w foldable
Which is the best solar generator that will power 2 frigerators and 1 freezer ?
I recently purchase a ecoflow delta. It accepts 400w charging . Should I go with ecoflow solar panels or are there better options as far as price and quality? I plan on using it to camp.
The thing about a lot of electrical preps is unless you're using them often, they tend to lose their 'zero point' I think the term is. It's not something you can just throw in the BoB and forget it for a year, or it'll be useless by the time you might need it, you wouldn't know, and you wasted the resources that could have otherwise gone to something you would still be able to use, like mechanical handtools.. Just my experience with buying dynamo hand-crank items, they lose that functionality.
Even a powerbank that I got with a hand crank.. the usb charge still works fine.. But the hand-crank is dead. If I didn't use it regularly to charge an item when the slots on my PC are at a premium, it would also probably be dead at this point.
Guess if you're going for these bigger ticket items try to incorporate them into your life instead of having them sitting there as a 'just-in-case' item.
Any chance you have an extra panel you've reviewed that's 100 watt with a mp4 adapter for the 300 watt Golabs. I'll pay you for it. Was looking for a fold up. Just looking for something to continue my experiments with my grandchildren with solar until I can afford the panel I actually really want. If this is inappropriate, I apologize.
so where to do you suggest I go to learn what these panels will hook up too? I have a Blueitti but I got the 3 120W panels that go with it. In order to charge it via solar I have to use all 3 =360W..I think, I don't think it will charge with only 2. So getting one of these 200W wouldn't be enough to charge my Blueitti? This is what totally confuses me about solar panels.
what solar panels will work with the Anker 767 please?
Whoa up...I have rigid monocrystaline 100 watt panel's and even on heavily clouded day's the produce power...not as much as on a sunny day but produce power! I believe the Charge Controller makes the biggest difference. I use a MPPT now but I started out with a PWM! The difference in the amount of power you get from a MPPT versus a PWM is like night and day!!! But and this is the really expensive part...you must have a battery bank big enough to store the energy you truly need!°°