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Concentration of CO2 in the Atmosphere

Geothermal Heat Pump with a Pond Loop

More Efficient than Air-source Heat Pumps

By George Harvey

There was a time when farms often had fish ponds on them, and many could be used for heat. This is a fish farm in Sainte-Famille, ile d’Orleans, Quebec. Photo Selbymay, Wikimedia Commons.

Regular readers of Green Energy Times probably do not […]

Cold Climate Heat Pump Workshop

Wednesday, May 6 Do Cold Climate Heat Pumps Make Sense for You?

Cold climate heat pumps have rapidly emerged as a promising technology for Vermont. Come to a workshop to learn about heat pump options for both hot water and space heating to see if they make sense for your home. This workshop will cover […]

NESEA Speakers at BuildingEnergy 15: Marc Rosenbaum

Tuesday Workshop – Marc’s Zero Net Energy Deep Energy Retrofit

Tuesday, March 03, 2015 10:00 am to 1:00 pm BuildingEnergy 15 Workshops

A building energy geek gut-renovated a small house. Learn about the decisions made, and consequences thereof; about choices of construction assemblies, materials, windows and doors, and mechanical equipment. Successive blower door test […]

Energy Co-op of Vermont launches an innovative heat pump leasing program

November 12, 2014, Colchester, Vermont The Energy Co-op of Vermont, a northern Vermont heating fuel provider and energy efficiency Co-op, announces the launch of Co-op Heat Pumps, an innovative heat pump leasing program. The Co-op Heat Pump program offers homeowners a super-efficient Fujitsu heat pump for less than $40 a month on a ten-year […]

From Heating to Cooling, Heat Pumps are Win-Win!


By Mike Hamlin

It is no secret that this has been a much colder winter than normal. January, February and March HHD’S (heating degree days) were on average 16% colder than 2012-13 with March topping 24% colder than normal. In spite of […]

What is the Deal with Heat Pumps?

By Richard Faesy, Energy Futures Group, Inc.

Heat pumps seem to be in the news recently. In April, Efficiency Vermont launched a new program promoting them and Green Mountain Power recently launched a heat pump rental program that appears to be wildly successful. They expected to hear from about 200 customers but instead received inquiries […]

Geothermal + Solar = Efficiency

By George Harvey

When Don and Judy Jordan decided put build a house, they wanted to share it with Judy’s parents, who are in their mid-80s. This meant addressing some unusual needs for warmth, as they had spent twenty years in Florida, and special consideration for potential special needs. Given four adults and a potential […]

Solar Power and Heat Pumps

New Inverter Heat Pumps Worth Their “Salt”… Can Triple Solar PV R.O.I.

By Mike Hamlin

New inverter heat pumps are very different from their early predecessors. The new inverter-driven technology enables the heat pump to transfer heat from the outdoors to the indoors extremely efficiently and reliably at temperatures well below 0º. The use of […]

How Heat Pumps Work

Mini split heat pumps are electric heaters that uses refrigerant to extract heat from the outside air, even during cold temperatures. Heat pumps rely on the refrigeration cycle in the same way as your refrigerator or freezer does, extracting heat from the air even at very cold ambient temperatures. ReVision Energy utilizes an […]

Solar Powered Heat Pumps = Peace of Mind

By Frederick Greenhalgh

As they approached retirement, mechanical and electrical engineer Mike Tabone and his wife Louise spent some time thinking about what they wanted their life to look like. With tumult in the financial markets, investments in more traditional avenues seemed a risky proposition, while the reality of rising energy costs seemed certain.