345 Hudson’s Pathway to a Low-Carbon Energy Future

Reimagining heat, a new direction for office buildings

345 Hudson, New York: The low carbon retrofit model
Caption 345 Hudson, New York: The low carbon retrofit model
The path to decarbonization is steep—but a clear path forward is beginning to reveal itself.

Learn more about our bold plan that imports expertise from a highly efficient Nordic model.

View our partner profile for 345 Hudson

The 345 Hudson retrofit project is a carefully phased building retrofit that deploys thermal networking—novel to the U.S. market but vetted across decades in other regions—to drastically reduce energy demand and eliminate carbon emissions.

The 1931 masonry office building occupies the entire block between King and Charlton Streets in New York’s former Printing District. It is owned and operated by Hudson Square Properties (HSP) — a joint venture of Hines, Trinity Church Wall Street, and Norges Bank and is one example of a case study for low-carbon retrofits in the New York market.

The project was among the first of the Empire Building Challenge. NYSERDA and the Building Energy Exchange (BE-Ex) have launched the educational series High Rise/Low Carbon, promoting the market for low carbon retrofits of tall buildings across New York State.

What can investors learn from this new direction for office buildings?

This approach:

  1. Imports expertise from a highly efficient Nordic model and utilizes systems and technologies vetted across decades in other regions
  2. Is science-based instead of regulatory
  3. Innovates through design rather than relying on the innovation of new technologies
  4. Uses familiar parts to create an inexpensive and efficient system to deliver the high-quality office environments that today’s tenants demand
  5. Sees heat not as something to be ejected in summer and supplied in winter, but as a resource to be shared among different spaces year-round
  6. Can be applied in phases on a floor-by-floor or tenant-by-tenant basis, working with rather than against the natural lease turnover cycle

Result: As the first set of floors are retrofitted to this new model, the industry will be provided a clear showcase for how brown assets—buildings that are at risk of future carbon costs—can be converted into green assets that are fully prepared for an all-electric, low-carbon energy future.


Building Energy Exchange (BE-Ex)

The Building Energy Exchange (BE-Ex) connects New York City’s real estate and design communities to energy and lighting efficiency solutions through education, exhibitions, technology demonstrations, and research.


The New York State Energy Research and Development Authority, known as NYSERDA, promotes energy efficiency and the use of renewable energy sources. NYSERDA's mission is to advance clean energy innovation and investments to combat climate change, improving the health, resiliency, and prosperity of New Yorkers and delivering benefits equitably to all.