Energy Efficiency

Energy-Efficient Winner

Meet the house plan that won the energy-efficient category in the 2015 HOWIEs.

Kit Homes

Options for energy-efficient, panelized, kit-built houses.

New Year's Green

The top five ways to go green from a Sustainability expert.

Energy Efficient Hot Water

The 5 types of resource-efficient water heaters now available and how they can save you energy, water, and money.

Green Houses in New Orleans

Thanks to a successful public-private partnership to rebuild New Orelans after Hurricane Katrina, the city offers lessons in energy efficient home building.

Net-Zero Homes

What you need to know about getting rid of your house's carbon footprint.

Passive Design Principles

What you can learn from so-called Passive House Design -- i.e. houses with very low energy use -- and apply to the building of any home.

All About Solar

How to make going solar a smooth process.

Freegreen Plans

FreeGreen's entire library of energy-efficient plans is now part of the inventory.

12 Green Build Essentials

Green design and development experts share what you need to know before breaking ground.

The Passive House

A new house built to the Passive House Institute US standard.

Shipping Container Homes

Interest in adapting the shipping container esthetic for home design is a growing trend.

Architect Visit

Architect/Sculptor/Furniture Designer Olle Lundberg's cabin in the Northern California woods.

Best Energy-Smart Home

A Maine architect designs Michigan's first certified Passive House to be rooted in tradition.

Energy Saving Tips

How to save energy in your home without a major retrofit.

Adult Crib Cabin

A getaway cabin prototype inspired by farm structures and built at the Strathmore Mansion in North Bethesda, Maryland.

Energy Mistakes

5 mistakes to avoid when building your energy-efficient home.

Energy Efficieny Tips

Energy efficient design through common sense approaches to seals, HVAC, water use, and the selection of appliances and fixtures.

Eco-lighting & Windows

Selecting the right windows and lighting is essential for an energy-efficient home.

Straw Bale Construction

Straw bale building now part of national building code -- basic information about this construction method.

Performance Windows

High performance windows and doors are key elements in the passive design of the Karuna House.

Efficient Home

Building an energy efficient house begins with orientation to the sun and taking advantage of thermal mass.

Straw Bale Cabin

A new house in a rugged and isolated location is designed for energy independence.

Passive Soar Strategies

Cost-effective ways to use passive solar heating to warm your new home.

Radiant Heat Options

Explaining how electric and hydronic radiant heat in floors works, and the basic ways to use it.

LED Bulb News

Newsflash: 40- and 60-watt incandescent bulbs are no more.The new LED replacements last much much longer.

Bungalow by Susanka

Announcing Sarah Susanka's innovative new 2 bedroom 2 bath Not So Big Bungalow plan.

Contemporary Cottage

An innovative cottage plan by architect Nir Pearlson.

Net Zero Energy House

Touring the energy-efficient, light-filled house of husband-and-wife architectural team Buzz Yudell and Tina Beebe.

Water Conservation

New technologies and products for conserving water at home.

Super Efficient House

Six key elements work together to make this house appealing: insulation for an R-50 SIP wall assembly and an R-60 foundation; triple-glazed windows; diligent air-sealing; minimized risk of thermal bridging; attention to indoor-air quality; and a super-insulated slab foundation that picks up heat during the day and releases it slowly at night.

Roof Vents

Differing opinions about the need for a ridge vent from several builders.

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