Tag Archives: Smart Grid

Net Metering And Rooftop Solar For The Utility Of The Future

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Net metering makes small-scale renewable energy, such as rooftop solar panels, more affordable by crediting the “distributed generation” owners for the excess energy they produce.

Duane Tilden‘s insight:

>Why the new focus on net metering?  The cost for rooftop solar panels has fallen 80% since 2008, including 20% in 2012 alone.  Installed rooftop solar energy has increased by 900% between 2000 and 2011.  As consumers install more rooftop solar panels and net meter them, utility revenues will decrease.

Net metering policies vary from state-to-state, including the amount of the payback for excess energy.  The most favorable policy for distributed generation owners is an excess energy credit equal to the full retail energy rate consumers pay for energy, i.e. the amount consumers are charged for using energy.  Most states use this measure.  However, utilities claim this prevents them from recovering their full costs and overpays distributed generation owners, unfairly shifting costs to other consumers.  Utilities say the credit should be equal to the utilities’ wholesale energy cost at the time of day when excess energy flows back to the grid.

Despite attempts by utilities to change net metering policies, state regulators are keeping these policies intact.  Earlier this month, the Idaho Public Utilities Commission rejected Idaho Power’s request to pay less than the full retail rate and to impose higher charges on net metering consumers.  Last month, the Louisiana Public Service Commission rejected similar requests by Louisiana utilities.  More recently, Arizona Public Service Company raised the issue in a ne[…]<

See on blogs.edf.org

Community Energy Storage Project Stalls

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Two years ago, AEP Ohio kicked off one of the largest community energy storage projects in the nation, funded in part by the U.S. Department of Energy. The pilot, however, did not go very far.

Duane Tilden‘s insight:

>AEP and S&C, which was the vendor for the pilot, declined to speak specifically about the project and the shortcomings of the batteries, although the two will continue to work together on a much smaller scale.

Small scale is exactly where community energy storage is at. It’s not only the scale of the batteries that are small (compared to megawatt, grid-level storage), but also the scale of utility uptake. “We haven’t seen any mass deployment,” said Mike Edmonds, vice president of strategic solutions for S&C. “It’s a very young market.” Instead, utilities are dipping their toes in the water by testing just a few units.<

See on theenergycollective.com

Sustainable Heating and Cooling of Buildings | Leonardo ENERGY

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In many non-residential buildings across Europe, the energy consumed for heating and cooling is more than half the total energy consumption of the building. This is not inevitable. The introduction of simple design concepts and currently available technologies can lead to significant reductions in the energy consumption, operating costs, and carbon emissions of both new and existing buildings.

See on www.leonardo-energy.org

Standard Solar to pioneer PV micro-grid system in Maryland – PV-Tech

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The number one source for in-depth and up-to-the-minute news, technical articles, blogs and reviews on the international solar PV supply chain.

Duane Tilden‘s insight:

>[…] Standard Solar chief executive Tony Clifford said: “Widespread implementation of grid-connected energy storage systems is key to solar PV becoming a mainstream energy supplier.

“As one of the nation’s first commercial micro-grids, this project can truly be a game changer for PV. Not only does it provide backup power to Konterra, it also supports grid integrity and allows for participation in ancillary markets for electricity.” […]

See on www.pv-tech.org

Research and Energy Efficiency | The Energy Collective

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Every time energy policy is being discussed, you’ll usually find a call for more R&D spending at the top of the list of ways to solve problems. While I agree that research is great, it’s obviously not enough and, if anything, only the first step.

Duane Tilden‘s insight:

>The result of this comparison doesn’t come as a surprise to anyone who is remotely interested in energy issues. There is a massive energy efficiency gap between the US and other world economies. While this is no surprise to many, it should be a lesson for all those who tell the public that meaningful action requires yet more R&D spending. The 200 million citizens of Japan and Germany are proof that even the technology and the concepts of the past can make a huge difference.<

See on theenergycollective.com

Integrating Building into the Smart Grid

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See on Scoop.it – Green Building Design – Architecture & Engineering

It will take time to get from point A, today’s grid and building technologies and power markets to point B, a Smart Grid with intelligent buildings and transactive markets, but it can be done.

Duane Tilden‘s insight:

>Transactive energy will play a critical defining role in grid modernization and shaping the Smart Grid.  Buildings, as noted in last week’s article consume 40% of the nation’s energy.  And while building owners can justify purchase decisions on energy savings as well as sustainability values, there’s another crucial factor for building owners to invest in technologies that reduce energy use and deliver self-generation.  That reason is to address the increasing vulnerability of the electrical grid to momentary and sustained power outages to both natural and human causes.

Buildings and their occupants are impacted by grid-related power outages.  The negative impacts range from reduced work productivity and decreased occupant safety and health to reductions in lifestyle standards.  Just like real estate values are higher for green buildings with LEED recognition, in the future, buildings that are grid-hardened may command premium prices because they preserve delivery of services regardless of grid status.  It is a compelling new variable in value propositions for tenants and occupants.<

See on theenergycollective.com

101-Year-Old Toledo Museum of Art Building Goes Temporarily “Off the Grid” After 20 Years of Implementing Green Initiatives – absolutearts.com

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Museum briefly becomes a provider, rather than user, of electricity

Duane Tilden‘s insight:

>TOLEDO, OHIO–On Tuesday, May 21 the Toledo Museum of Art achieved a milestone in its 20-year effort to reduce energy consumption: its 101-year-old Beaux Arts main building stopped drawing power from the electrical grid and actually started returning power to the system. The ongoing process, which incorporates using sustainable energy practices such as solar power, energy-efficient lighting, micro turbines and chillers, has resulted in hundreds of thousands of dollars in cost savings over the years.

[…]

Bernhard cited lighting as a good example. The first generation of LED lights weren’t suitable for illuminating and protecting art, so they were bypassed at the time. Now that the technology has dramatically improved, LED fixtures are now being introduced into the galleries, where lights frequently burn out from continual usage. The new lights not only save energy but last much longer, decreasing labor costs associated with the constant replacement of bulbs. The lighting in the renovated lot is also provided by new LED fixtures, which provide greater illumination while using less electricity

Bintz and Bernard also added new micro turbines and chillers to the power plant at TMA’s world-famous TMA Glass Pavilion during last year’s energy upgrade. The heat from the building’s working glass hot shop is recycled into the rest of the building during cold months. While generating electricity, the micro turbine waste heat is used to heat the building in the colder months and generate chilled water for air conditioning in the summer.<

See on www.absolutearts.com

US team’s battery ‘breakthrough’

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Researchers believe they have found a way to radically shrink the size of batteries while offering the same amount of power and faster recharges than at present.

Duane Tilden‘s insight:

>The scientists’ “breakthrough” involved finding a new way to integrate the anode and cathode at the microscale.

“The battery electrodes have small intertwined fingers that reach into each other,” project leader Prof William King told the BBC.

“That does a couple of things. It allows us to make the battery have a very high surface area even though the overall battery volume is extremely small.

A cross-section of the battery reveals the 3D-design of the research project’s anodes and cathodes

“And it gets the two halves of the battery very close together so the ions and electrons do not have far to flow.

“Because we’ve reduced the flowing distance of the ions and electrons we can get the energy out much faster.”<

See on www.bbc.co.uk

Transactive, distributed energy markets hold promise | Intelligent Utility

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Transactive energy markets hold the promise to achieve economic efficiency and reliability across the bulk power system and distribution networks.  This research area was identified in the Caltech Resnick Sustainability Institute’s Grid2020 report released last fall, and was the topic of the third discussion of the series in April 2013.

Duane Tilden‘s insight:

>Significant untapped potential exists to leverage a new class of flexible mixed distributed assets (e.g., distributed generation, responsive demand, storage, power electronics and electric vehicles), what has been called DR 2.0, to manage the power system. But, this requires changes in both market designs and grid operations.  […]

Current wholesale market rules are significant barriers to participation as they effectively do not distinguish a 500 MW power plant from a 5kW electric vehicle battery. This is very unfortunate, as the technology to tap these smaller resources and create significant value for customers is available today. Heather Sanders, Director, DER Policy at CAISO shared that, “a challenge is to create market participation rules that meet operators’ needs for reliability, but also facilitate customer value opportunities.” <

See on www.intelligentutility.com

New Wyoming lithium deposit could meet all U.S. demand

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The U.S. currently imports more than 80% of the lithium it uses, with the silvery metal winding up in batteries from cell phones to electric cars.

Duane Tilden‘s insight:

“University of Wyoming researchers found the lithium while studying the idea of storing carbon dioxide under ground in the Rock Springs Uplift, a geologic formation in southwest Wyoming. University of Wyoming Carbon Management Institute director Ron Surdam stated that the lithium was found in underground brine. Surdam estimated the located deposit at roughly 228,000 tons in a 25-square-mile area. Extrapolating the data, Surdam said as the uplift covered roughly 2,000 square miles, there could be up to 18 million tons of lithium there, worth up to roughly $500 billion at current market prices.”

See on www.mining.com