Nearly half of residential distributed solar power is owned by private companies

Lucas Mearian for ComputerWorld:  About 44% of all solar power that's installed on residential rooftops, known as distributed solar capacity, is owned by private businesses, such as SolarCity or Vivint Solar, according to new government data.

Distributed solar capacity in the U.S., which includes all solar power capacity other than utility-scale installations 1 megawatts (MW) or larger,  increased to 12.3 gigawatts (GW) as of September, according to new figures from the Energy Information Administration (EIA). In comparison, a cumulative 11.6GW had been installed in the U.S. by the end of 2015.  Cont'd...

Glow-in-the-dark dye could fuel liquid-based batteries

Charlotte Hsu for University of Buffalo:  BUFFALO, N.Y. — Could a glow-in-the-dark dye be the next advancement in energy storage technology?  Scientists at the University at Buffalo think so.

They have identified a fluorescent dye called BODIPY as an ideal material for stockpiling energy in rechargeable, liquid-based batteries that could one day power cars and homes.  BODIPY — short for boron-dipyrromethene — shines brightly in the dark under a black light.

But the traits that facilitate energy storage are less visible. According to new research, the dye has unusual chemical properties that enable it to excel at two key tasks: storing electrons and participating in electron transfer. Batteries must perform these functions to save and deliver energy, and BODIPY is very good at them.  In experiments, a BODIPY-based test battery operated efficiently and with longevity, running well after researchers drained and recharged it 100 times.  Cont'd...

Microgrids and the Future of Decentralized Power

UL works with industry leaders to develop a new standard for microgrids, blending in-lab product testing with on-site field evaluations.

Arcadia's Community Solar Program

A customer can subscribe to as little as single panel or enough to zero-out their utility bill.

Solar and Renewable Energy Trends in 2017

The global transportation fleet is turning electric faster than anyone could have imagined only a year ago.

Using Geographic Information Systems to find Solar Sites

GIS technology allows us to query, analyze and visualize information in an incredible number of ways, and as with all technology these days it is evolving rapidly.

DOE energy innovation hub backs two key future battery technologies

Nick Flaherty for EE Times:  After four years of evaluation, the Joint Center for Energy Storage Research (Chicago, IL) is backing two key technologies for the future of battery systems.

The Center was set up four years ago with a five year remit to explore new battery technology for transportation and the electricity grid that, when scaled to commercial production, are capable of delivering five times the energy density at one-fifth the cost of commercial batteries available in 2011.

The Center has investigated 1,500 compounds for electrodes and 21,000 organic molecules relevant for liquid electrolytes as well as filing 52 invention disclosures and 27 patent applications, says director George Crabtree. Five techno-economic models created by JCESR for designing virtual batteries on the computer are being used to evaluate the best pathways for beyond-lithium-ion systems to reach 400 watt hours per kilogram (400 Wh/kg) and $100 per kilowatt hour ($100/kWh).  Cont'd...

How Flushing your Toilet could help create Biofuel

Laura A. Shepard for Popular Science:  Picture a giant toilet bowl looming larger than life outside the UN headquarters in New York. It sounds like an absurd scene, but the stunt from three years ago was not a childish prank. It was a serious statement to mark the first World Toilet Day and raise awareness of the fact that one third of the world’s population lacks access to toilets.
Addressing the global sanitation crisis is a top priority among the UN’s Sustainable Development Goals, and it now has an exciting solution.
In fact, science may soon make your toilet bowl a viable alternative energy source. Your flushes can produce two or three gallons of biofuel per year when the wastewater is treated using a process, developed scientists and engineers at the Department of Energy’s Pacific Northwest National Laboratory, called hydro-thermal liquefaction (HTL).

HTL emulates the way crude oil forms naturally, when biomass decays under high pressure and heat for millions of years — but it only takes 45 minutes.  Cont'd...

Small Power, Big Grid, Part 4: DERs AND WHOLESALE MARKETS

The Emerging Relationship between Distributed Energy Resources and the Transmission System.

The Importance of Fuel Flexibility

Many companies don't realize that they can generate their own power on-site and in a cleaner and more cost-effective way.

Offshore wind energy system combines sea water and wind to create electricity

Megan Treacy for TreeHugger:  We've seen our share of interesting wind power designs, but often the technology can't come anywhere close to matching what the traditional horizontal axis wind turbines can do. There's a reason that when we think of wind energy, we think of giant masts with rotating blades and it's because that design is incredibly effective -- just look at Scotland and other areas around the world that now get a majority of their electricity needs from wind power.

The design isn't without its flaws; those rotating blades do pose a hazard to birds and bats and the cost of manufacturing and installing all of those giant parts can be expensive. When it comes to offshore wind power in the U.S., that has been a major roadblock. The energy generation potential is huge, but so is the cost.

An energy start-up company called Accio Energy -- yes, a Harry Potter reference -- thinks it has a solution to that problem, one that will generate as much if not more energy from offshore wind than a traditional wind turbine, but at half the cost. There are no moving parts, instead Accio's technology consists of large permeable panels on masts that let the ocean winds blow right through.  Cont'd...

The World's Largest Solar Plant Is Now Online in India

Avery Thompson for Popular Mechanics:  The world's largest solar power plant has just been completed in Kamuthi, in Tamil Nadu, India. The new plant adds 648 MW to the country's generating capacity.

The Kamuthi Solar Power Project takes the title of world's largest solar plant from the Topaz Solar Farm in California, which was completed two years ago and has a capacity of 550 MW.

The Kamuthi Solar Power Project was built in only 8 months, and cost $679 million to complete. It contains 2.5 million individual solar panels, covers an area of almost 4 square miles, and is expected to power 150,000 homes.  Cont'd...

Can Thermonuclear Fusion Be Used for Energy?

Nuclear fusion has several advantages over nuclear fission. There are no carbon emissions. It is a very energy efficient system and provides abundant fuel.

Reducing Wind Energy Costs through Increased Turbine Size: Is the Sky the Limit?

Berkeley Lab study shows significant potential for further turbine scaling.

Could depleted oil wells be the next step in energy storage?

Power-Technology.com - Quidnet Energy is hoping to revolutionise energy storage with its underground pumped hydro concept, which uses abandoned oil and gas wells to store and release pressurised water, driving turbines and feeding electricity back into the grid. How does the concept work and how far could it go? Quidnet co-founder Aaron Mandell explains.

As the cost of renewable energy continues to decline and intermittent clean power sources such as wind and solar gain ever an ever larger foothold in the global energy mix, the ability to store energy that can be quickly dispatched when needed has become as important as the development of renewables themselves.

Robust storage options could allow for greater integration of intermittent renewables, as they facilitate flexible capacity-building that relies far less on coal and gas-fired plants for baseload generation, meaning energy storage is a key step in the journey to wean the world off its fossil fuel addiction.  Full Interview:

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