Zero Energy Ready Home Certification

The Legacy House got its U.S. Department of Energy Zero Energy Ready Home (1) certification (dated August 1, 2019). That’s a recognition of the quality of the work done to build an efficient home. A standard new home has an HERS Index (2) rating of 100 or thereabouts. The Legacy House came in at 17. Lower is better, of course.

The certificate projects an annual energy cost of $950 and annual electricity savings of 27,934 kWh. Estimated CO2 reduction is 24.9 tons. We will watch it and see how accurate this information is.

  1. https://www.energy.gov/eere/buildings/zero-energy-ready-homes
  2. https://www.hersindex.com/

Electricity Use

We have four months’ data to give us some idea how the Legacy House solar plant, seen above just after installation, is working.

May 2019 — $46.48, 731 kWh delivered, 416 kWh to grid, 315 kWh net.
June 2019 — $20.40, 617 kWh delivered, 544 kWh to grid, 73 kWh net.
July 2019 — $9.50, 488 kWh delivered, 536 kWh to grid, -48 kWh net.
August 2019 — $16.48, 619 kWh delivered, 577 kWh to grid, 41 kWh net. 

It appears that we are getting a bit less than 85% of our power from the garage roof panels. That’s great, but a bit more than we really want. Unless one builds off-grid, AEP Ohio expects net-metering users like us to buy some power to pay for grid maintenance. That’s fine.

Keep in mind that the numbers above relate to the house and the electric car in the garage.

Drip Irrigation

At the Legacy House we are trying to be responsible about the use of energy and water. We have started installation of a drip irrigation system (1) for the lawn-free landscaping.

The drip lines in the image above will be covered by two to three inches of mulch. They are uncovered now until we are sure everything is working properly, as it seems to be.

There are long lists of advantages and disadvantages to drip irrigation. For us low water usage, low initial cost, and better weed control were the principle considerations.

  1. https://en.wikipedia.org/wiki/Drip_irrigation

The Legacy House

It has been over a year since I last posted on this blog. There are two reasons for that.

First, I was really getting down over the stuff I was constantly writing about Donald Trump and his henchmen and henchwomen. See what I mean? Just thinking about those folks drives me right into an intellectual quagmire that sucks the hip-boots of reason clean off my body.

Second, this blog is supposed to be about doing stuff that’s good for something, not fuming and writing about stuff that’s good for nothing (which isn’t actually doing anything, is it now?). Well, we have just finished a busy year of doing good stuff, and it’s time to clear out the bad vibes. Start over.

A bit over a year ago, June 20, 2018, we had finished digging a hole in the ground at Evans Farm (1) in central Ohio.

IMG_0620

We would plant a house there. They take about a year to grow, it seems, and we are now at harvest time.

Evans Farm is a New Urbanism (2) community, or will be when it fills in around us. It was the best place we could find to put our Legacy House. We wanted a site that would permit us to walk to shops, recreational facilities, the post office, schools, and the like. We wanted something closer to our neighbors. In the long-run, a community is not sustainable if it’s made up of nothing but quarter acre patches of grass upon which are planted  ticky-tacky houses serving as a motels for the folks inside. It’s not a community if you have to jump in the car to access all your services, if you never see the folks next door. It’s not emotionally healthy nor environmentally nor economically sound. We did not want to leave a quarter acre legacy to our family when times are-a-changing. So, we did something about that, and here is what grew in the hole we dug:

IMG_1934

There is still a bit of work to do, but we are happily ensconced here and all systems are go. The Legacy House is a 2500 square foot modern farmhouse. It’s big enough to live in, functional, practical, and pleasant. Just what it needs to be, and not more. It is not a wasteful nor pretentious home, and it is ready for the 21st century.

The all-electric house stands over a ten foot Superior Walls (3) precast wall basement. The envelope is a SIPs (4) system. The walls are made of eight and six inch panels, and the roof is made of ten inch panels. The triple pane windows are by Marvin. Primary HVAC is a Mitsubishi two zone air-sourced heat pump. (6) The garage roof supports 20 LG360Q1C-A5 solar panels with Enphase IQ7+ inverters (7200 Watts). (7) Electricity costs for the last quarter came to $76.38 (including the Tesla Model 3 in the garage).

The Legacy House builder was Dan Troth of Greentech Construction. (8) He is presently rebuilding his web site, so be patient.

There will be many more posts about this building in the future. It’s great to be writing about doing things.

  1. https://www.evansfarmoh.com/
  2. https://en.wikipedia.org/wiki/New_Urbanism
  3. https://www.superiorwalls.com/
  4. https://www.sips.org/about/what-are-sips
  5. https://www.marvin.com/
  6. https://www.mitsubishicomfort.com/products/outdoor-units/multi-zone-cooling-and-heating/compare
  7. https://www.lg.com/us/business/solar-panels/lg-LG360Q1C-A5
  8. https://greentechconstruction.com/