An unsolicited comment on your upcoming solar install. Make sure the installer puts in a surge suppressor on the main house panel. Much of VTs power system is rural and power quality can be very poor especially in winter. Old rural power systems, solar farms and grid batteries can make things worse. Inverters are very sensitive to power quality and the guarantees usually exclude damage from surges. I lost an inverter from a strike on a nearby power line before I installed one. I now have a good quality surge suppressor on the main panel and highly recommend doing so. The model that is very popular in the solar field with a good reputation is a Midnight Solar SPD
https://www.midnitesolar.com/productPhoto.php?product_ID=601&productCat_ID=23&sortOrder=1&act=p . It installs on either the main house panel or the line side tap (if they do not tie the inverters to main panel). If its an array remote from the house, I recommend a second DC SPD at the array to protect the house from any induced voltage coming in from the array or nearby strikes. Nothing protects from a direct lightning strike but a SPD may protect from a nearby strike. A good SPD will pay for itself if it avoids one incident and if your power ever blinks that has potential to take out an inverter (and other random electronics in the house)
BTW, back to the wood, in order to dig, the ground has to be thawed unless the contractor has a big rig and wants to make a big mess. Ground freezes from the top down and freezes more in areas that are clear of snow. The difference in frost depth between a yard covered with snow and a nearby driveway can be a couple of feet of frost. Piling wood on the ground acts as an insulator, although snow melting on top of the pile can run down and case the base to freeze. In this case tarp the top of the pile until you process it. The alternative is to get some hay bales and line them up over the area where the trench will go then cover the top of the bales with plastic so the snow doesnt not melt on top and refreeze. Ideally the width of the hay should be at least the depth of the trench and a bit extra will be better. When I had big construction projects that got delayed into winter in nearby northern NH, if at all possible, we would lay out hay and it saved a lot of time and frustration.