2501 – 4500 Sq feet

 Keya Lea

Passive and Active Solar Retrofit on a Traditional Adobe

Passive and Active Solar Retrofit on a Traditional Adobe

An older adobe home was transformed to become an efficient, modern house with a south facing sun room and a south facing two-story Trombe wall.

 Keya Lea

How Passive Solar Keeps You Warm In Snowy Winters

How Passive Solar Keeps You Warm In Snowy Winters

Here’s a beautiful passive solar house that’s toasty warm in the cold, snowy winter. He has a gorgeous tile floor next to large southern facing windows.

 Keya Lea

Passive Solar Living in Washington State

Passive Solar Living in Washington State

This house interacts with nature and the environment, including the sun, rain, earth and wind, in order to provide a truly self-sustaining and independent living environment.

 Keya Lea

An Efficient Off-Grid Solar Electricity System

An Efficient Off-Grid Solar Electricity System

The freedoms of living off-the-grid can be rewarding as well as comfortable. This article focuses on the electrical and active solar systems that augment the efficiency…

 Keya Lea

An Optimally Efficient Off-Grid Passive and Active Solar Home

An Optimally Efficient Off-Grid Passive and Active Solar Home

This off-grid, owner-designed and built house is one of the most impressive passive and active solar combinations I’ve seen. Located at an elevation of 9,000 feet…

 Keya Lea

Active Solar: Thin-Film and Solar Evacuated Tubes In Action!

Active Solar: Thin-Film and Solar Evacuated Tubes In Action!

Located in Colorado, a state with over 300+ sunny days a year, the home owner is taking advantage of the sun as an energy source and using it to provide both electricity and heat. The passive solar house boosts its efficiency with active solar photovoltaics (PV) to create electricity.  While the house creates its own electricity, it [...]

 Keya Lea

Net Zero PV Log Home

Net Zero PV Log Home

Is there anything more luxurious than spending time in a well-built home? Standing proudly on a hill surrounded by gorgeous mountain views, situated in one of the coldest areas of Colorado, the Fraser-Granby mountain valley, is a surprisingly efficient house. The contemporary active-passive solar house is situated and built to be cool in the summer [...]

 Keya Lea

A Passive Solar House with Trombe Walls

A Passive Solar House with Trombe Walls

Tucked away where the canyon country meets the mountains, is a beautiful passive solar home built with two Trombe Walls. People who live in passive solar homes tend to exude a certain passion and excitement about their houses. It’s as if they have a really cool treasure house that is simultaneously philosophically and economically pleasurable [...]

 Keya Lea

Off-Grid Passive Solar Earthship

Off-Grid Passive Solar Earthship

Located close to BLM land with gorgeous views of the San Juan Mountains in southwestern Colorado, this passive solar, modified earthship-style house is off the grid and generates all of its own electricity. Structure The house is a modified two-story earthship that has a berm around on the northern side of the ground floor.  It [...]