Yeah I looked it into a bit recently, and found it very interesting mostly on the basis of production per acre. Are you planning on solar for the home’s energy or some other source? Now that I think about it something like biomass would work quite well as a supplemental energy source for the winter when the sun isn’t out much. If you are going for solar will you have a battery system as well for evenings / winter or are you grid-tieing for that?
Processing the biomass could take some planning if you produce it on a large scale. I ran some rough numbers for total energy production per acre per year for giant miscanthus and it is quite shockingly high. It takes 2-3 years to get established but once it does it is a powerhouse. It can produce 15-20 tons (short) of biomass per acre depending on growing climate/conditions once it is fully established. With 20t/acre, it has a 17 MJ/kg LHV(heat from burning) and it would contain about 85,679 kWh of energy; At 40% electrical conversion efficiency, you can expect around 34,271 kWh of usable electrical energy. That’s enough to power and heat 3-4 houses if you burn it in a CHP power plant.
So you could potentially plant 1/3 - 1/4 acre of a home’s yard and have easily have enough biomass to heat and/or power a home. Definitely could be worth looking into giant miscanthus (wiki link) depending on the area and site. Being a plant, it tends to produce more the warmer the weather is in the area as long as it has sufficient water to grow. At that scale all you would probably need is a scythe, a shed, and a fireplace for heat. A small hay-baler might be nice too, even if not strictly necessary. It may not be as efficient per area as solar but I imagine is a whole lot cheaper.
I also read that with torrefaction it could be a drop-in fuel for existing coal plants which would be stellar from an environmental perspective. I think it would compliment solar well particularly in the winter when you burn excess harvested sun for heat so you could have a battery / fuel usage then for when you can’t produce any energy. Anyway I hope you / someone finds it useful. I hope I didn’t overshare, I feel like I wrote a book lol.
Edit: I’d also be interested in hearing about your planned house. I have read about house building some from an energy use / conservation perspective and found it interesting. Have you read / heard about Passive House’s? I suspect they overlap pretty well with carbon negative housing in general.
Found this on a wiki page on Giant miscanthus.
Tldr; Less than 50% of ‘suitable’ land is in use.
I suspect their definition of suitable is also pretty narrow.