May 17, 2020

Energy Usage Measured on the Circuit Level

Admin
3 min
Energy usage down to the circuit level
Ever wonder exactly how much energy a microwave oven or big screen TV uses, whether you left your refrigerator door open, or how much money can be save...

Ever wonder exactly how much energy a microwave oven or big screen TV uses, whether you left your refrigerator door open, or how much money can be saved by turning off a home computer while at work? The answer to those questions may not be that far off.

A new San Diego Gas & Electric (SDG&E) research study plans to test technology that can measure in-home electricity consumption down to the individual circuit and appliance level. The research will be supported by the Pecan Street Research Institute, a consumer energy research organization headquartered at the University of Texas at Austin. 

Approximately 30-50 SDG&E customers living in the Civita master-planned development in Mission Valley will be selected to participate in the study.  Civita, a Sudberry Properties development, is an SDG&E "Smart Community" project where smart grid technology is being integrated including solar panels, electric vehicle charging stations, fuel cell generation, battery storage and enhanced energy management tools for residents.

The research, which launched in August, will last for several months, and potentially longer.

"This research will take smart grid technology to a new level by providing among the most detailed energy usage data to customers through technology that is not even on the market yet," said John Sowers, SDG&E vice president for generation and resource planning. "Through the research study, SDG&E will learn how this in depth data can help customers to make smarter energy decisions and save money."

By understanding how customers use electricity at the circuit level, SDG&E hopes to identify ways to help tailor future utility programs related to home area networks, energy efficiency and demand response. Demand response programs signal customers when to reduce usage in order to meet resource demand when the grid is reaching capacity. This new knowledge could also allow SDG&E to recommend specific measures customers can take to both reduce usage and cost.

Pecan Street will provide volunteer participants with a free website and mobile application that provides real-time information on the customer's electricity use down to the appliance and circuit level as well as information on appliance, rooftop solar panel and home energy performance.  The service is powered by an "energy data router" installed at the customer's circuit panel. The router is manufactured in California.

Pecan Street already operates this technology in nearly a thousand homes, apartments, businesses and public schools throughout Texas and, starting later this summer, in Colorado. Its work began in the Mueller neighborhood in Austin, built on the land of a former airport and redeveloped into a ground-breaking mix-used, sustainable urban neighborhood. A decade later, the 711-acre Mueller community is a bustling mini-city and among the world's largest LEED-ND certified communities.

Pecan Street researchers are particularly excited about the unique advanced energy technologies that SDG&E and Sudberry have built into the Civita community.

"If there is any place in the United States poised to define the energy system of the future, it's Civita," said Pecan Street president and CEO Brewster McCracken. "By participating in testing this new consumer energy service, San Diegans who live in Civita will have unprecedented real-time access to information on their home and appliance electricity use.

“They will also be playing a personal role in advancing public interest research on how to integrate cutting edge consumer energy services into a technologically advanced, highly efficient, low carbon energy system."

"This project is part of Sudberry's commitment to make Civita a regional example of a sustainable community," said Colton Sudberry of Sudberry Properties.

The Pecan Street Research Institute is a non-profit university-based scientific research organization. The Institute's public interest research focuses on advancing understanding and solutions addressing utility system reliability, climate change, renewable energy integration and customer needs and preferences. 

Photo by Mark, Vicki, Ellaura, Mason

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Jul 30, 2021

Major move forward for UK’s nascent marine energy sector

marineenergy
renewableenergy
tidalturbine
Sustainability
3 min
The UK’s nascent marine energy sector starts exporting electricity to the grid as the most powerful tidal turbine in the world begins to generate power

Although the industry is small and the technologies are limited, marine-based energy systems look to be taking off as “the world’s most powerful tidal turbine” begins grid-connected power generation at the European Marine Energy Centre

At around 74 metres long, the turbine single-handedly holds the potential to supply the annual electricity demand to approximately 2,000 homes within the UK and offset 2,200 tonnes of CO2 per year.

Orbital Marine Power, a privately held Scottish-based company, announced the turbine is set to operate for around 15 years in the waters surrounding Orkney, Scotland, where the 2-megawatt O2 turbine weighing around 680 metric tons will be linked to a local on-land electricity network via a subsea cable. 

How optimistic is the outlook for the UK’s turbine bid?

Described as a “major milestone for O2” by CEO of Orbital Marine Power Andrew Scott, the turbine will also supply additional power to generate ‘green hydrogen’ through the use of a land-based electrolyser in the hopes it will demonstrate the “decarbonisation of wider energy requirements.” 

“Our vision is that this project is the trigger to the harnessing of tidal stream resources around the world to play a role in tackling climate change whilst creating a new, low-carbon industrial sector,” says Scott in a statement. 

The Scottish Government has awarded £3.4 million through the Saltire Tidal Energy Challenge Fund to support the project’s construction, while public lenders also contributed to the financial requirements of the tidal turbine through the ethical investment platform Abundance Investment.

“The deployment of Orbital Marine Power’s O2, the world’s most powerful tidal turbine, is a proud moment for Scotland and a significant milestone in our journey to net zero,” says Michael Matheson, the Cabinet Secretary for Net-Zero, Energy and Transport for the Scottish Government. 

“With our abundant natural resources, expertise and ambition, Scotland is ideally placed to harness the enormous global market for marine energy whilst helping deliver a net-zero economy.

“That’s why the Scottish Government has consistently supported the marine energy sector for over 10 years.”

However, Orbital Marine CEO Scott believes there’s potential to commercialise the technology being used in the project with the prospect of working towards more efficient and advanced marine energy projects in the future. 

We believe pioneering our vision in the UK can deliver on a broad spectrum of political initiatives across net-zero, levelling up and building back better at the same time as demonstrating global leadership in the area of low carbon innovation that is essential to creating a more sustainable future for the generations to come.” 

The UK’s growing marine energy endeavours

This latest tidal turbine project isn’t a first for marine energy in the UK. The Port of London Authority permitted the River Thames to become a temporary home for trials into tidal energy technology and, more recently, a research project spanning the course of a year is set to focus on the potential tidal, wave, and floating wind technology holds for the future efficiency of renewable energy. The research is due to take place off of the Southwest coast of England on the Isles of Scilly

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