Posted by:


Very energy efficient and comfortable home with 24 inch thick rammed earth walls. Photovoltaic panels and solar hot water save on energy costs.

What You Need to Know


5.3 kW grid-tied photovoltaic array with SMA 5000US grid-tied inverter. Electric radiant heat in basement and first floor, radiators on second floor. With seasonal use of the house, electric bills are down to a few dollars per year.

Maintenance Requirements:

None since 2010.

Efficiency or Sustainability Improvements:

Rammed earth walls composed of soil mixture excavated from basement area, mixed with crushed stone, sand, and 7% Portland cement, rammed with backfill tampers. Walls contain 4 in polyurethane foam insulation. Windows are triple glazed. House also has 60 tube Apricus solar hot water collector array and Phoenix composting toilets.

My Motivation:

Control energy use to benefit the environment. We have come very close to achieving a zero net energy home.

Experience with Installer:

We had an excellent experience with the installers and builders. We wanted an energy efficient home with lasting natural beauty. The building technique was used for about one-third of the Great Wall of China, and is long lasting.

Additional Notes:

At the current time we know of no other rammed earth structure in New England, so this project was a learning experience for all concerned.

Open House Info:

This is our fourth Green Building Open House tour. Welcome! Photos of the house at:

View Other Case Studies
Solar Rammed Earth House
Solar Rammed Earth House

Residential|Solar PV

Cronk Earthship (tire house), rammed earth, passive solar
Cronk Earthship (tire house), rammed earth, passive solar

Single-Family Residence|Energy Efficiency

Search for Other Case Studies
EnergySage Marketplace
Get the best deal on solar.
Get Started