Electric Grid

Paul Schwabe Among renewable resources, one of the most valuable attributes of geothermal electricity is the baseload characteristic of the energy resource. That is, geothermal electricity generators are able to deliver a stable level of power production over time. Yet for better or worse, this baseload characteristicalong with other notable factors such as size constraints and varying market segmentsreveals that interconnecting a geothermal plant to a transmission or distribution system poses unique challenges compared to other renewable energy technologies . A recent report by NREL, "Geothermal Power and Interconnection: The Economics of Getting to the Market," delves...

by Debra Fiakas CFA Solar power producers have many challenges.  One is the direct current to alternating current dilemma.  Solar panels create power that flows one way in a direct current (DC).  We use electricity in our homes and businesses in alternating current (AC) that flows both directions, forward and backward.  So solar cell producers must use solar inverters that convert the electricity from the direct current in the solar panel into alternating current. This is where Advanced Energy Industries, Inc. (AEIS:  Nasdaq) comes in. AEIS makes power inverters for the solar power industry.  The...

Ed Gunther From Solar Light Flashes: SPI12 Edition Sunny Boy TL-US Inverter SMA Solar Technology AG (ETR:S92) will begin limited shipments of the transformerless Sunny Boy 3000/4000/5000TL-US-22 inverter series for 3 to 5 kiloWatt rated AC power PV systems in 4Q12. The TL-US series has added a unique Emergency Power Supply feature providing daytime power to a dedicated power socket in the event of a grid power outage. The power socket is isolated from the grid during the outage and supplies up to 12 Amps so long as...

Tom Konrad CFA Inverter for a solar array. (Photo credit: Wikipedia) Solar inverter stocks are looking cheap, but until the weaker players are forced out, they are likely to get cheaper. The major publicly traded solar inverter companies are Power-One (NASD:PWER), Satcon (NASD:SATC), SMA Solar (OTC:SMTGF), Siemens (NYSE:SI), Advanced Energy Industries (NASD:AEIS), Schneider Electric (OTC:SBGSF) and upstart Enphase Energy (NASD:ENPH).  Over the  last year the industry has faced eroding margins and an increasingly competitive environment.  This parallels the problems of solar manufacturers: the industry has too much...

Will 2012 Finally be the Year of the Strong Grid? Tom Konrad CFA Utility infrastructure companies are seeing the beginnings of the long-anticipated infrastructure boom, and have the rising revenues and backlog to prove it. Investing in electric utility infrastructure has long been one of my favored ways to invest in the growing renewable energy sector without having to take a bet on unproven technology.  The North American grid is in badly in need of an upgrade, and increasing penetration of variable and distributed resources such as solar and wind will require further upgrades in order to...

John Petersen Last month Lux Research released a bottom-up evaluation of the cost effectiveness of eight energy storage technologies in six grid-scale applications throughout 44 countries, including all 50 U.S. states. Their report titled "Grid Storage under the Microscope: Using Local Knowledge to Forecast Global Demand" predicts that annual global demand for grid-scale energy storage will reach an astounding 185.4 gigawatt-hours (GWh) by 2017 and represent a $113.5 billion incremental revenue opportunity for an industry that currently generates sales of $50 to $60 billion a year. In the grid-scale sector alone, Lux predicts an average...

John Petersen I have a new favorite word AGGREGATION! At the risk of sounding like a reporter, I’m going to summarize a pre-holiday news story you might have missed but need to know about. In late November the PJM Interconnect, the largest of nine regional grid system operators in the US, announced that it had begun buying frequency regulation services from small-scale, behind the meter, demand response assets in Pennsylvania. The first resources brought on-line by PJM were variable speed pumps at a water treatment plant and a 500 kW industrial battery array...

John Petersen In 1883 Thomas Edison said, "The storage battery is one of those peculiar things which appeals to the imagination, and no more perfect thing could be desired by stock swindlers than that very selfsame thing. ... Just as soon as a man gets working on the secondary battery it brings out his latent capacity for lying." The problem isn't so much the batteries, which haven't improved all that much over the last century. Instead, the problem lies in the fertile imaginations of scientists, engineers, politicians, ideologues, analysts and investors who focus on new energy...

Tom Konrad CFA Comverge (COMV) has a great residential demand response business.  The company lacks focus, but the stock has significant upside as an acquisition target. As part of my ongoing series on energy management companies (see these articles on World Energy Solutions (XWES) and EnerNOC (ENOC)) I spoke with Comverge CEO Blake Young. The Comverge Advantage Comverge is the strong leader in residential demand response (DR,) one of the most cost effective grid stability solutions.  Even within demand response, residential DR is an excellent niche, because working in the market for residential DR...

Tom Konrad CFA Information technology has mostly passed the energy sector by... but for how long? Information Technology revolutionized the way we buy things (Amazon, eBay), how we get information (Google, Wikipedia, the decline of newspapers), and how we interact with out peers (Facebook, Twitter, LinkedIn.)  Yet so far, it has had little, if any transformative impact on energy.  Tim Healy, CEO of EnerNOC (ENOC), the world's largest  third party provider of Demand Response to utilities and grid operators, thinks that's about to change. Demand Response (DR) began decades ago with Interruptible loads and Interruptible rates,...

Tom Konrad, CFA With all the discussion of grid based energy storage for renewable energy integration, the two cheapest and most mature solutions are overlooked.  They are also the solutions most often overlooked by investors captivated by the story of clean technology. A few years ago, I put together some graphs to show this as dramatically as possible.  I surveyed the available data on energy storage and other grid integration technologies for the costs of existing installations, and calculated average cost per installed kW (power), per installed kWh (energy) and round trip efficiency (the percent of energy...

Tom Konrad CFA A NASDAQ listing could bring a quick profit to investors who buy now, but beware the business risk. Ambient Corp. (ABTG.OB) offers an Internet Protocol (IP) smart grid communications platform to electric utilities.  So far, they have exactly one customer: Duke Energy (DUK).  Duke selected Ambient's X-series communication node solution, which flexibly gathers data from multiple smart meters and relays it to the utility.  For instance, in some cases Duke is using Ambient's nodes to gather data from both Echelon Corporation's (ELON) smart meters using data over powerline technology, and Badger Meter's (BMI) smart...

Tom Konrad CFA Power and automation giant ABB, Ltd. (NYSE:ABB) was named Cleantech Corporation of the Year at the Cleantech Forum in San Francisco. The company has been focused on acquiring start ups in the cleantech space for the last couple of years, with two significant ones in 2010: Ventyx, a provider of IT systems to utilities, and Baldor Electric, the premier supplier of high-efficiency motors in the US. I very much like ABB's approach to cleantech. I'd even written about Baldor as a good way to invest in energy efficiency earlier in 2010 just a couple months before...

Tom Konrad, CFA If the Japanese use less nuclear power, what will take its place? I'm astounded by the resilience and discipline of the Japanese people in response to the three-pronged earthquake, tsunami, and nuclear disaster, perhaps in large part by my cultural roots in the egocentric United States, where we seem to have forgotten the virtue of self-sacrifice for the greater good.  Yet while Japanese society has shown itself to be particularly resilient, the Japanese electric grid is much less resilient.  According to International Energy Agency statistics, Japan produced 258 TWh of electricity from...

John Petersen The most widely misunderstood subject in the field of energy storage is the potential for grid-based applications. They fire the imagination because the grid is so pervasive and the need is so great. They also present immense challenges to storage technology developers because the fundamental economic value per unit of grid-based energy storage is very low. While the subject of grid-based storage provides rich fodder for media reports and political posturing, the reality bears little relation to the perception. On March 9th, Lux Research published a sorely needed reality check in a new report titled "Grid...

John Petersen On March 4, 2011 the Pacific Northwest National Laboratory published a comprehensive review of "Electrochemical Energy Storage Technologies for Green Grid" that is a must-read for serious investors who want to understand the technical and economic intricacies of the energy storage sector. It explains why storage is a key enabling technology for wind and solar power, the smart grid, efficient transportation and a legion of high-technology manufacturing and service enterprises that can't survive without reliable power. It also explains why energy storage is an investment mega-trend that will endure for decades. While I normally try to...