“The future in peer-to-peer consumer energy exchange is here. The world’s first small-scale power grid, a microgrid, to use consumer blockchain transaction (think Bitcoin) has begun in New York.

The first paid energy transaction between two individuals happened on April 11, on President Street, Brooklyn, where long-term resident and social justice activist Eric Fruman sold excess renewable energy from his solar rooftop installation to ex-Energy Star National Director Bob Sauchelli. This was the beginning of a relationship between five homes on one side of President Street, producing energy and selling their excess, to five homes on the other side.

The Brooklyn microgrid is a small-scale solar venture in the Gowanus and Park Slope neighborhoods. It enables residents to trade and sell solar energy locally, via rooftop solar setups without the involvement of national utility companies. Instead they rely on a New York startup called TransActive grid.

TransActive grid (TAG) is a joint venture between LO3 Energy, founded by Lawrence Orsini, and consensus systems, which allows customers to exchange energy between each other using a combination of smart contracts and a blockchain software called Ethereum.

Blockchains are programs that make it possible to create digital ledgers. They are favored by the financial market due to their security, transparency, and ability to run in real time.

“You know exactly what happened, when it happened, who consumed what, and who produced what,” said Orsini in a telephone interview.

Blockchains are commonly known for their association with Bitcoin. As Orsini puts it, “Bitcoin is to blockchain like Kleenex is to tissue.”

New York Governor Andrew Cuomo started the “Reforming the Energy Vision” strategy after Hurricane Sandy left two million people in New York without power in 2011.  It is a bid to clean up the state and promote better energy efficiency in the form of microgrids, roof-top solar installations, and so on, as well as providing affordability and a wider choice for customers in how they manage and consume their energy.

In Feb. 2015, Cuomo requested adding a $40 million incentive for a number of microgrids to be designed that could run parallel to the national grid. In the event of a storm, like Hurricane Sandy, they could separate and become independent from the main grid so that if the main grid gets knocked out, power remains for selected areas.

According to Orsini, 30 percent of the energy content of the resources that are taken from the ground are lost in the production of energy in power plants. And another 7 percent is lost when the energy is transported from the power plant to a remote building.

“It is a much more sane way to build a utility infrastructure,” says Orsini, who likes to think of microgrids as not being “disruptive to utilities but as evolving utilities.””

Source: Brooklyn Microgrid World’s First Peer-to-Peer, Blockchain Energy Transaction