Cold weather means we have to burn wood and propane to keep the shop/batteries warm.
Lots of snow will stick to the solar panels even with them pointed almost straight up and down (sun is low on horizon and standing up the panels I get reflection from the snow) so I have to go out there with a 20’ pole and brush to clear the panels. I actually really enjoy this, but I’m a snow freak big into winter sports like snow machines
Where I am at in the winter sun is short so we burn a lot of diesel to make the power, road tax free diesel. However when the sun is out during the winter I have a large field in front of the solar panels and the snow acts like a large mirror even making some power under a full moon / like a large reflection pond. The lg solar panels we have now are 160w and about 25 years old, I am putting in an order for 24 new 400 watt panels this summer… that will make a huge difference in how much sun we can collect. The existing wiring and charge controllers can still handle the 400 watt panels so I am able to save some $$$ there
During winter we rely heavily on diesel fuel that is for sure, which is fine with me because previously we relied on propane and the kohler propane genset. Every winter we would burn up 800 gallons of propane and the propane genset does not like to run when it is cold… military diesel gen has no issue starting running no matter what.
A commercial generac propane genset lasted 5 years back here the new kohler that replaced it lasted 4…1100 hours is sucked a valve. My diesel genset laughs at 1100 hours with proper maintenance it will last 30+ years (yanmar 3 cyl turbo diesel, brushless Mep-804b). I have a “build thread” for the diesel genset over at steelsoldiers.com, I got is used on Craigslist and I had to learn a lot about it to get it hooked up and dialed in (3 phase, old setup was two phase)
We use far less diesel like 400 gallons vss the 800+ propane. The problem with propane gets worse when you rely on a truck to Re fill the tanks, sometimes like this year we can’t get a truck back here until the end of April…leaving us with an empty tank for two months (I have to haul and re fill 100lb tanks)
Diesel works better for us
Way easier to haul two 5 gallon jerry cans then a 100lb propane bottle. 10
Gallons of diesel will last us 5-7 days in dead of winter, 25 gallons of propane would last 3-5 days!!!!! But the propane is also used for cooking and hot water here.
The winter and cold is hard on the system that is for sure, we just have to burn more wood to keep warm and more diesel to recharge the batteries due to
Lack of sun. If I can keep the water flowing all winter then hydro power is the key to reducing $$$$ fuel costs
There is usually only one or two weeks of really cold temps here that would stop flowing water hydro generator
During summer with sunshine I won’t even start the diesel generator for 2-3 months as the sun easily keeps the batteries charged and that is with the crappy old panels.
Right now we have 16 panels they are mounted on poles and I change the angle 4 times a year to track the sun
So winter we spend some $$$ on diesel and propane, summer we barely use any
Adding a small 12v system to the house was key to taking some things off our main grid, we use a small 12 system with two car batteries and some cheapo panels, i ram USB ports to the kitchen island upstairs and into our cabin downstairs so cell phones and some cordless tools get re charged separately… this is a good way to help save $$$$$ I always have extra car batteries and I can use the old solar panels to keep those suckers charged. 6-10 smart phones and iPads suck ALOT of juice!!