A quantum leap forward in air conditioning technology

A quantum leap forward in air conditioning technology.  “Refrigerators and air conditioners based on HFCs and HCs are also relatively inefficient,” said Dr. Xavier Moya of the University of Cambridge. “That’s important because refrigeration and air conditioning currently devour a fifth of the energy produced worldwide, and demand for cooling is only going up.” Eco-Friendly Solid Could Replace Conventional Refrigerants …

New York City Seeks To Reduce Carbon Emissions From Buildings By 40%

April 19th, 2019 by Steve Hanley on Clean Technica Climate advocates know that meeting the goals of the Paris climate accords means more than generating more renewable energy. It also requires reducing emissions from existing sources. At present, 67% of all greenhouse gas emissions  in New York City come from buildings, not from transportation as you might expect. On April 18, the city …

The next frontier in fighting climate change – your cooktop/kitchen stove: California is looking for ways to phase out fossil gas, not just from power plants but also from stoves, water heaters and furnaces

A recent report, the California Energy Commission described a “growing consensus that building electrification is the most viable and predictable path to zero-emission buildings.” Renewable gas, the report said, “can be a part of the solution to reducing [greenhouse gas] emissions from buildings, but the role is likely to be constrained by limitations on renewable gas availability, cost, and ongoing methane …

The Green New Deal aims to get buildings off fossil fuels. These 6 places have already started: The work of reducing carbon emissions from buildings has begun

Buildings are responsible for about 40 percent of the GHGs in the US, primarily natural gas these days but also heating oil burned to heat (and cool) the water and space inside buildings. CA: Last year, then-Gov. Jerry Brown signed an executive order that targeted statewide net-zero carbon emissions by 2045. Buildings are about 25 percent of state emissions, so that necessarily …

Building-Integrated Photovoltaics Emerging, Thanks To NZEB Goals

Clean Technica, Building-Integrated Photovoltaics Emerging, Thanks To NZEB Goals, March 2019 Incorporating solar generation in commercial building materials may finally become a mainstream practice, with both solar windows and solar panels used to create net-zero buildings. Evolving regulations in leading jurisdictions like California and Germany are driving the building integrated photovoltaics (BIPV) with adoption deadlines as early as next year. The …

The mere act of electrification has a powerful effect on efficiency: electrifying the US economy from carbon free sources will reduce the amount of energy needed by more than half

The Green New Deal: The enormous opportunity in shooting for the moon.  Decarbonizing with massive electrification will bring about a new American abundance. Saul Griffith, Feb 20, 2019 The conversation about a Green New Deal is bold, timely, and necessary. The most important component of the Green New Deal as currently drafted is its commitment to complete decarbonization. That is the destination, the …

With $15-20K installation, homeowners on fuel oil and propane are saving 50% on heating with Dandelion’s geothermal ground source heat pump system

By Steve Hanley, Clean Technica, March 2019 Have you heard of home geothermal heating and cooling? It’s an energy system that can save homeowners serious money on utility bills. Unfortunately, many people have never heard of home geothermal, or they don’t understand it. A lot of people think it has something to do with capturing heat from volcanoes or geysers.  That …

Zero-Energy Homes: Tunneling Through the (Electrification) Cost Barrier in Cold Climates

RMI found that, in every instance, pursuing ZER homes was more economical than just electrifying space-heating equipment with code-compliant equipment, and in colder climates it actually changed the economics of electrification from being painful to homeowners to being beneficial.   ZE homes told a more interesting economic story. Over the resale timeframe, they performed economically in a fairly similar way to …

Prolonged presence of green space is important: children who grew up with the lowest levels of green space had up to 55% higher risk of developing a psychiatric disorder independent from effects of other known risk factors

Growing up in urban environments is associated with risk of developing psychiatric disorders, but the underlying mechanisms are unknown. Green space can provide mental health benefits and possibly lower risk of psychiatric disorders. This nation-wide study covering >900,000 people shows that children who grew up with the lowest levels of green space had up to 55% higher risk of developing …

Net-zero energy homes have arrived — and are shaking up the US housing market

The Massachusetts Department of Public Utilities just unveiled a new package of incentives for homeowners to give up their oil and gas furnaces in favor of electric heat pumps.  The incentives come under the state’s Mass Save program as part of the its new Three‑Year Energy Efficiency Plan for electric and gas distribution companies. Overall, the plan is expected to save customers …