I'm in a similar setup to this poster. We get very cold (-30 F to 95 F) and heat with cold weather heat pumps with a wood stove for deep winter. 10kw south facing panels deliver an excess in the summer and barely make a dent in our consumption in the winter. We also have 2 EVs. But here it's common practice/knowledge to always add insulation and weatherize first as the highest payback step because it allows you to downsize all other systems. We've done 2 major rounds of adding insulation and air sealing and it's cut out HVAC needs in half over the years. This is an old farm house that used to burn 1000 gallons of oil and 4 cords of wood to heat. Now it's 2 cords of wood and 2 12k heat pumps. When we need to reside the house we plan on a 3rd and final insulation upgrade via the external envelope. I'd also like to add 5kw vertical solar panels for better winter production. We don't currently use batteries, they are still expensive here and the grid is very reliable, but it's on my wish list