‘Green homes saving twice as much energy as expected’

Green homes in the US are saving twice as much energy as predicted. That’s according to green building certification programme, Built Green, which says certified homes used up to 40% […]

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By Jonny Bairstow

Green homes in the US are saving twice as much energy as predicted.

That’s according to green building certification programme, Built Green, which says certified homes used up to 40% less electricity than non-certified homes, in many cases doubling estimated improvements.

Researchers analysed data provided by utility Seattle City Light and compared model-based predictions with actual electricity use from a year of occupancy across 746 homes.

The study showed on average, certified homes saved homeowners more than $500 (£380.6) per year in electricity bills and prevented more than half a ton of carbon emissions.

Built Green said many homes saved enough energy to power an electric car for more than a year, supply a 12W LED light bulb continuously for more than 44 years or offset the energy production of more than 13 solar panels.

Leah Missik, Built Green Programme Manager, said: “The savings can translate into greater purchasing power for buyers, allowing them to consider homes with a more expensive up-front cost, knowing they’ll cost less to operate in the long run.”