Cornell Tech Campus

Cornell NYC Tech Campus on Roosevelt Island

Gateway Elton Street

Gateway Elton Street

Gowanus Green

Gowanus Green

The Knick Condominium

The Knick Condominium

Organic landscaping with native, drought-tolerant plants. Photo by Diana Pau.

Organic landscaping with native, drought-tolerant plants. Photo by Diana Pau.

Green Building

Seeking Energy Efficiency in New Buildings

Hudson is committed to developing high-performance buildings that are energy and water efficient, use more sustainable building materials, have healthy indoor air quality, and minimize negative impacts on the larger community. Hudson has developed projects meeting or exceeding several green building rating paradigms including NYSERDA’s Multifamily Performance Program (Energy Star label), the US Green Building Council’s Leadership in Energy and Environmental Design (LEED) standard, and Green Communities. Hudson has set – and broken – records for the largest solar array on a residential building in the state of New York currently at 314,000 watts. In 2015, Hudson announced that the Cornell Tech NYC dormitory would be the largest high-rise Passive House in the world and the tallest residential building of its kind, setting another record for energy efficiency. Hudson is constantly assessing advances in technology and building practices, to optimize energy use while constructing a building within allowable budgets.

Completed

  • Third + Bond – Market-rate condos; new construction, 44 new condominium apartments in a series of 4½ story townhouses, achieved LEED Platinum and EnergyStar status. It was the first market-rate building in New York City to receive a LEED for Homes Platinum rating. T+B features a highly insulated building envelope with rain screen facade, energy recovery ventilators that recover the heat from the exhausted air to provide tempered fresh air, water conservation measures such as dual flush toilets, sustainable finishes such as FSC certified hardwood flooring, and organic landscaping.
  • Dumont Green – Affordable rental; new construction, 176 units of affordable housing in East New York, Brooklyn, completed Enterprise’s Green Communities program and received the EnergyStar label. This building includes an 80-kilowatt solar photovoltaic system – the largest installation of its type to date on a residential building in NYC – that supplies 80% of the building’s common area electric needs. Dumont Green won the National Grid Energy Efficient Award at the Brooklyn Building Awards in 2011. 1490 Dumont Green also set the record for largest solar array on a residential building in the state of New York at the time of construction. (The record has since been broken by Gateway Elton I and then II, below.) The solar system provides power to cover 50 percent of the laundry facilities and common area usage.
  • At The Knick – Market-rate condo; gut rehab, in Bushwick, Brooklyn, Hudson reused the existing structure and restored the existing façade without making any penetrations for HVAC. Instead of low efficiency PTAC or window air conditioning units, individual high efficiency gas-fired boilers and centralized cooling systems are provided for each unit. The Knick achieved EnergyStar through NYSERDA’s Multifamily Performance Program.
  • The 9-building 100% affordable Gateway Elton Street project is designed to achieve LEED-Gold, Enterprise Green Communities and EnergyStar standards under the most restrictive construction cost constraints. Heating is provided using high efficiency condensing boilers and air conditioning will be accommodated using individual units placed in pre-installed thermally sealed window sleeves. Fresh air is supplied through trickle vents in the windows and kitchen and bath air is exhausted horizontally from each unit directly to the outside. Gateway Elton was awarded the 2014 Renewable Energy Project of the Year from the New York Chapter of the Association of Energy Engineers. The first two phases of Gateway Elton are complete (368 units at 40%, 50% and 60% AMI, LEED Gold, with 528,000 watts of solar photovoltaics); the third is under construction with a CoGeneration plant and a plan to bring all three phases combined to 1,000,000 watts of solar photovoltaics.

Under Construction/Pipeline

  • Cornell Tech NYC. Cornell Tech Residential, located on the new Cornell campus located on Roosevelt Island (opening Fall 2017), is designed to achieve Passive House (PH) certification. When certified, the building will be the largest high-rise Passive House in the world and the tallest residential building of its kind. PH is the most rigorous energy efficiency standard in the world. Started in Germany, the Passive building standards cut energy consumption by 60-80 percent compared to code buildings. Certified PH buildings provide superior comfort, indoor air quality, and resilience. Like LEED, PH is a building certification system; however, unlike LEED there is no points system involved and the process is built upon a maximum primary energy demand, which is the total annual energy to be used for all domestic applications (heating, hot water and domestic electricity) and translates to a maximum energy demand of 38 kBtu per square foot per year. The PH requirement for airtight façade (measured in air changes per hour or ACH) is 0.6 ACH, 10x tighter than typical new construction. Typical new construction ranges from 6-8 ACH, while typical brownstones average 25 ACH. In this building, the energy savings seen from PH technology, translates to a projected saving of 882 tons of CO2 per year, equal to approximately 5,300 new trees being planted, in comparison to a typical similar building built to code. The project is also participating in the LEED program, a requirement of the City’s agreement with Cornell for the site. Because the building is designed to achieve PH, this project is expected to achieve LEED for Homes Platinum.
  • 626 Flatbush – Mixed income rental; new construction. This mixed income project consisting of 254 units of housing with retail and community facility space, is currently under construction and seeking LEED-Gold and EnergyStar status. The property will include a small cogeneration plant which will use gas-powered motors to create electricity, and use the energy by-product to heat domestic hot water. 626 Flatbush will also have roof garden plots for residents to grow vegetables, flowers and herbs – bringing the farm-to-table movement right to their homes. 626 Flatbush is scheduled to open in the Winter of 2015.
  • La Central – Affordable rental; new construction. The five building, 992-unit mixed-income, mixed-use development in the South Bronx will be designed to Enterprise Green Communities standard and include CoGeneration plants, 600,000 watts of solar photovoltaics, rainwater harvesting/recycling and almost 2 acres of open space for the community. La Central is scheduled to break ground in 2016.
  • At the 774-unit, mixed-income development known as Gowanus Green, Hudson is teaming with other developer partners to redevelop a contaminated City-owned site with a sustainable storm-water management system that will reduce impacts on the City’s overburdened combined sewer system while helping to flush out the stagnant waters of the adjacent polluted canal. The development team plans to participate in the LEED for Neighborhood Development program and develop all the buildings to LEED-Gold standards.


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