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How a “freak out” over Local Law 97 turned into a green overhaul

The Lathrop co-op made a solar instal­la­tion work for its budget, and its historic land­mark status. Now, it’s keen to choose more projects from a ​“menu” of energy effi­ciency upgrades.

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

How a hole in the Guggenheim revealed a hole in the insulation market

A Massachusetts startup offers a novel building insu­la­tion method with promise for aging New York City buildings.

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

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

“We have to walk and chew gum at the same time”:

Affordable housing expert Sadie McKeown says for multi­family build­ings in New York, afford­ability and energy effi­ciency go hand-in-hand

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

A revamped NYC Accelerator bets on its “Momentum” platform to push building projects forward

A new online tool brings together swaths of data to help build­ings scope and plan LL97 energy effi­ciency projects

Can New York’s biggest electrical utility handle the heat?

Con Edison has made big invest­ments to boost cleaner energy supply, but summer heat­wave outages, plus added demand from elec­tri­fying build­ings, still raise ques­tions about climate readiness.

Capital Planning: The misunderstood but mighty tool for co-op and condo retrofits

Skylight’s guide to the work that can help boards manage regu­la­tory compli­ance, energy tran­si­tion, and main­taining aging building systems.

State climate law has changed. How will that affect New York City buildings?

New York State has one of the most ambi­tious climate laws in the country — but will recent changes at the state level move New York City away from its goals?