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For energy savings on a tight budget, look for the leaks

‘One50’ West End Avenue, a 29-story resi­den­tial building on the Upper West Side, is cutting its energy use by finding out where exhaust air is being wasted.

A symphony of energy upgrades creates harmony for this midcentury co-op

The Victoria, a large resi­den­tial building in Union Square, has kept perfect time with LL97 require­ments thanks to the forward thinking of its board.

The Queens co-op that built a foundation for Local Law 97 compliance, brick by brick

At a middle-income co-op in western Queens, a series of smaller projects over a longer period do the same work as a single big-ticket upgrade to reduce carbon emissions

New York City’s passive house movement carries existing homes into a low energy revolution

The passive house move­ment is alive and well in New York City, proving that even old build­ings can achieve extreme efficiency

This battery offers New York City apartments a cleaner way to stay cool

Every Electric’s new power bank helps defray the peak demand on the city’s energy grid through effi­cient energy storage

Submetering for savings at Queensview

Behind the metering strategy that shifts the onus for elec­tricity use onto the indi­vidual — making users more aware of their own waste

How Casa Pasiva recycled infrastructure for a breath of fresh air

Behind this Bushwick development’s novel ERV solu­tion for its a passive house retrofit

A heat pump that slots into the façade and is pack(aged) with benefits

More retrofit projects are shifting toward the use of pack­aged terminal heat pumps, or PTHP units, as an energy- and cost-effi­cient way to upgrade a property’s heating system

Taking advantage of tax breaks gave this co-op a bigger budget for energy efficiency work

At the Queensview co-op, the J‑51 tax break secured almost $3 million in abate­ments over a nine-year period

What is the passive house movement?

This set of German-orig­i­nated building prin­ci­ples is a game-changer for energy efficiency

How nonprofit developers financed Harlem River Houses’ major rehabilitation

To complete the multi-million-dollar retrofit, part­ners on the project lever­aged a mix of public and private funding sources

Tyrone Thomas: “Stay engaged, even if they’re upset”

Tenant engage­ment, special­ized support, and inde­pen­dent over­sight were key to managing the retrofit at Harlem River Houses, even as it remained a bustling, active community

Preparing a workforce to deliver clean energy to New York City buildings

This inten­sive trains NYCHA resi­dents to install clean energy systems in their homes — and beyond.

Keeping Queensview affordable

How life­long afford­able housing cham­pion Alicia Fernandez has ensured that her Astoria co-op stays within reach for first-time home buyers

In 2025, carbon emissions reporting went well. But 2030? “It’s going to be a real scramble”

A Q&A with Mariel Hoffman, EN-POWER GROUP’s Director of Energy Engineering, on trends she saw in the first year of Local Law 97 filings

Can New York be a passive city? We surveyed the experts

A Q&A with three passive house experts on how passive prin­ci­ples can be imple­mented in New York City

“You have to consider other shareholders’ needs, and you all pitch in to achieve something together”

An expert on NYC co-ops speaks about what clean energy goals and regu­la­tion mean for this unique home­own­er­ship model.

Keep on Pumping: Tips for maintaining a heat pump

Experts say careful instal­la­tion, main­te­nance, and user behavior are the keys to keeping systems efficient.

Skylight takes New Yorkers behind the scenes of the Victoria’s energy-efficient renovation

A recap of Skylight’s latest clean energy building tour, hosted in part­ner­ship with EN-POWER GROUP.

Battery systems store lots of potential for New York City. Here’s how they work.

An explainer on resi­den­tial building energy storage systems (BESS) and what they can offer to NYC buildings.