Energy Efficiency

Roof on residential building in Washington DC with green grasses growing in middle planter.

DC energy efficiency rule requires buildings to upgrade their infrastructure or face millions in fines

Building owners and condo co-op members say the upgrades are often prohibitively expensive.

August 5, 2026 - Greater Greater Washington

Heat pump installed next to brick wall on  residential building next to brown wood planter boxes.

Oregon Requires Energy-efficient Heat Pumps in New Housing

A new state law is expected to save residents an average of $125 per month on energy costs.

February 22, 2026 - Smart Cities Dive

Protesters holding up anti-Trump climate protest signs in front of Capitol dome in Washington DC.

Dear Trump: the Future Belongs to the Efficient

Trump abandoned climate protection goals claiming that cheap fossil fuel helps consumers and the economy. A mobility-focused analysis shows that he is wrong: resource efficiency is the key to health, economic success and happiness.

February 19, 2026 - Todd Litman

Aerial of manufactured homes being dropped off by red tractor.

Affordable HOMES Act Removes DOE Oversight From Manufactured Housing, Claims it Will Drop Prices by $10K

A bill that passed the U.S. House would put regulations for manufactured housing, including energy standards, solely under the Department of Housing and Urban Development.

January 14, 2026 - RIS Media

Small duplex in Cleveland, Ohio.

Cleveland Deploys Solar to Make Affordable Housing More Affordable

A nonprofit-backed project is bringing efficient duplexes to Cleveland.

December 8, 2025 - Signal Cleveland

Worker painting metal roof white.

New Atlanta Law Requires ‘Cool Roofs’

Painting roofs with reflective coatings can significantly reduce indoor temperatures and improve energy efficiency, sometimes at a lower cost than traditional roof treatments.

July 15, 2025 - Next City

White banner with red "SPACE AVAILABLE" text hanging at top of white office building.

Congress Kills Office Conversion Tax Credit

A federal tax incentive for energy efficiency upgrades is going away next year.

July 14, 2025 - Smart Cities Dive

New five-story apartment building under construction.

Opinion: How Geothermal HVAC Lowers Costs, Improves Grid Resilience

Geothermal heating and cooling systems can reduce energy costs and dramatically improve efficiency.

June 22, 2025 - Greater Greater Washington

Construction workers on a suspended platform are installing thermal insulation on the facade of a modern apartment building, improving energy efficiency and reducing heat loss during cold weather.

Affordable Housing Renovations Halt Mid-Air Amidst DOGE Clawbacks

HUD may rescind over a billion dollars earmarked for green building upgrades.

March 28, 2025 - Bloomberg CityLab

Row of double-headed street lights against orange sunset sky.

How Smart Street Lights Can Help Cities Achieve Sustainability Goals

Switching to energy-efficient LEDs and using tech to program when and how street lighting operates can save cities millions in electricity expenses and bring down carbon emissions.

March 27, 2025 - Cities Today

Aerial view of harbor with modern buildings in Copenhagen, Denmark.

Retrofitting Old Cities for Sustainability

Explore strategies for retrofitting old cities to enhance sustainability while preserving historical integrity and managing logistical challenges.

December 15, 2024 - Devin Partida

Dense informal settlement on steep hillside in Brazil.

Housing as a Climate Resilience Strategy

Ensuring that housing, including in informal settlements, is safe and healthy for its residents is a key tool in the fight to build more sustainable and equitable communities in the face of climate migration.

December 11, 2024 - Time Magazine

Row of homes in Durango, Colorado covered in snow.

Colorado Launches New Efficiency and Weatherization Rebate Program

The state is using federal funds to assist homeowners in replacing inefficient appliances and making their homes more climate-friendly and resilient.

November 4, 2024 - Colorado Public Radio

Two-story home being retrofitted with energy-saving insulation.

Future of Justice40 Initiative Hinges on Election

The program requires that 40 percent of some federal funds be used to benefit historically disadvantaged communities.

October 30, 2024 - Blavity

Close-up angled view of colorful wood clapboard small historic homes with chipping paint in New Orleans, Louisiana.

House Poor: Low-Income Homeowners Struggle in the Shadows

While renters and homebuyers’ challenges dominate the headlines, they aren't the only ones wrestling with maintaining decent housing.

October 16, 2024 - Shelterforce Magazine

HVAC technician on roof installing heat pump with tools in foreground.

Seattle Expands Heat Pump Rebates

Moderate-income households can access up to $8,000 in incentives to switch from oil heating systems to more efficient electric heat pumps.

September 24, 2024 - Smart Cities Dive

Apartment buildings under construction with crane.

Study: Retrofitting Old Buildings Has Lower Total Carbon Footprint Than New Construction

A study of over a million Chicago buildings assessed their ‘embodied carbon’ footprint over their lifetimes, showing that demolishing an old building in favor of a new one almost always produced more emissions.

September 12, 2024 - Smart Cities Dive

View looking up at Zilker Studios apartment building in Austin, Texas.

What Makes Affordable Housing Green?

There's no one way to determine what makes “green” housing. Here's a breakdown of the standards and considerations used by the affordable housing industry.

August 6, 2024 - Shelterforce Magazine

Close-up of power lines with urban night scene blurred in background.

Using Machine Learning to Optimize Utility Management

Discover how machine learning optimizes city utility management for enhanced efficiency and reduced operational costs.

June 18, 2024 - Devin Partida

Data center with Google sign in front of black fence in The Dalles, Oregon.

Michigan Proposal to Attract Data Centers Garners Criticism

The state legislature is poised to pass a law that would bring more data centers to the state, but critics say the move would threaten the state’s climate goals.

June 4, 2024 - The Guardian

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.