Update on Energy Storage in the USA

Faster-responding storage allows us to operate the grid more efficiently, instantly balancing fluctuating supply and dynamic demand.

Integrated Energy Systems

Opportunities for solar installers to offer storage as an integral part of their solutions are opening up everywhere, from mitigating the impact of power outages, the increase in distributed renewable generation at times of low use, the rising costs of base and peak power and the trend of some states to reduce or eliminate net metering programs.

Power to the people: Solar panel sales to soon surpass leasing

Lucas Mearian for ComputerWorld:  Direct ownership of solar power panels will overtake third-party ownership next year as more consumers are choosing to buy, rather than lease, their panels. According to GTM Research's latest report, U.S. Residential Solar Financing 2016-2021, 55% of all U.S. residential solar capacity installed in 2017 will be purchased by customers paying either in cash, or through a solar loan financing arrangement; that number is expected to grow to 73% of all solar systems installed in 2021.   Cont'd...

Want to boost wind and solar power? Bring them together

Ben Jervey for GreenBiz:  What’s keeping solar and wind power from fully taking over the electric grid? For starters, the sun only shines during the day. Wind blows intermittently, is seasonally variable, and is not always blowing when the energy is needed. But what if solar and wind work together?  "Wind resource tends to complement solar resource," said Sarah Kurtz of the U.S. Department of Energy’s National Renewable Energy Laboratory. "Here in Colorado, for instance, the windiest time is during the winter and spring months. In winter, we don’t have as much sunshine, but we tend to get more wind and stronger wind." A handful of enterprising renewable energy developers are exploring how solar and wind might better work together, developing hybrid solar-wind projects to take advantage of the power-generating strengths of each — with the two technologies in tandem serving as a better replacement for climate-warming fossil fuels than either could be alone.   Cont'd...

BREAKING: Tesla, SolarCity merger approved with 85% shareholder support

Utility Dive:  More than 85% of Tesla's unaffiliated shareholders voted in favor of the $2.6 billion deal with SolarCity, which will allow the companies to move forward with an integrated solar roof and battery storage offering.   Cont'd...  

Solar Power Meets Electric Vehicle Atop a VW Microbus

Brett Belan, Apparent Energy for MotherEarth News:  The time is here for solar power to make its way to our vehicles. The state-of-the-art panels pose no weight limitation. At 6 pounds per 150 watts, thin flexible solar panels will weigh 600 pounds but give you 15 kilowatts! This is enough to directly drive from the sun. However, the surface area is a limitation, because that much solar would require 10 feet around the vehicle on all sides. The solution, ironically, is a mechanical engineering question of how to accordion-style fold these panels to conveniently open them for charging while the vehicle is at a standstill.  Cont'd...

Self-drive delivery van can be 'built in four hours'

Jane Wakefield for BBC News:  A self-drive electric delivery van, that could be on UK streets next year, has been unveiled at the Wired 2016 conference in London. The vehicle's stripped-back design and lightweight materials mean it can be assembled by one person in four hours, the firm behind it claims. The vehicles will be "autonomous-ready", for when self-drive legislation is in place, the firm said. The government wants to see self-drive cars on the roads by 2020. "We find trucks today totally unacceptable. Loud, polluting and unfriendly," said Denis Sverdlov, chief executive of Charge, the automotive technology firm behind the truck. "We are making trucks the way they should be - affordable, elegant, quiet, clean and safe."   Cont'd...

Small Power, Big Grid: Part 3 - DERs AND TRANSMISSION SYSTEM PLANNING

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

Is The Best Analogy For The Energy Storage Business--Eeek!--Hard Drives?

Michael Kanellos for Forbes:  The optimism in the energy storage industry is based on soaring demand, rapid technological advances, expanding capacity and, for some, what will likely be a scary competitive environment. First, the good news. Lithium ion battery packs over the last ten years have declined faster than the cost of solar, said John Carrington, CEO of Stem, which makes behind-the-meter storage systems for hotels and other commercial customers looking to shave peak power costs, during a hallway meeting at Finance West sponsored by the American Council of Renewable Energy this week. Solar panels have declined by 50% or more in the last five years. Batteries have declined by 80% in three years, he said. Battery packs hit the under $300 per kilowatt hour mark last December, Carrington added. By 2020, battery pack prices could drop to $190 per kilowatt hour. (In 2007, lithium ion battery packs in the wholesale markets sold for around $1,000 per kilowatt hour.)   Cont'd...

Batteries That Make Use of Solar Power, Even in the Dark

Stanley Reed for the NY Times:  A new cash crop has sprung up on Nicholas Beatty’s enchanting farm near here. Rows of gray solar panels range over about 25 acres, turning sunlight into electricity, as dog-size muntjac deer hop by. The panels themselves, trouble-free money earners that feed into the electric grid, are no longer unusual on farms in Britain or other countries. What’s new in Mr. Beatty’s field is a hulking 40-foot-long shipping container. Stacked inside, in what look like drawers, are about 200 lithium-ion cells that make up a battery large enough to store a substantial portion of the electricity the solar farm puts out. The battery and its software give Mr. Beatty an advantage over other solar panel farmers. Power prices in Britain and elsewhere rise and fall, sometimes strikingly, during the day and over the year, depending on the supply and demand.   Cont'd...

Repurposing Electric Vehicle Batteries

EV batteries still have storage capacity, typically at 80 percent, after they're removed from their vehicles and can be reclaimed for a "second life" as stationary power sources.

The Aquion Energy Saltwater Storage Battery

This system is working good in a 4000 sq ft shop & house combo, but could use more storage for peace of mind & will likely upgrade next year.

Flow Batteries in Cars?

Flow battery technology is immature. There is everything to play for and although pumping liquids from reservoirs does not sound compact or reliable in a car but who knows? Watch this space.

Tesla, Apple and Uber Push Lithium Prices Even Higher

The lithium ion battery market is forecast to expand to $46.2 billion through 2023, which represents an 11% average annual growth rate.

Solutions for E-Mobility Demands

There are two standards governing EV charging. In the U.S. there is the SAE J1772 standard, while in Europe and China the IEC61851 standard is used.

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