Monday, 7 March 2016

3 Reasons For Increased Efficiency Loss In Rewound Motors

The loss in efficiency of rewound motors Approximately 300,000 motors are rewound in the UK every year, with an average rating of about 12 kW, so the efficiency of rewound motors is extremely important. The loss in efficiency on rewinding depends on the techniques, processes and skill used to perform the rewind, and is usually […]

Led by Building Efficiency, the Advanced Energy Market is Bigger than Beer

building efficiency
building efficiency

Credit: Michael Stern via Wikimedia Commons


Building efficiency led the 8 percent growth in global advanced energy in 2015, according to a new report from the Advanced Energy Economy.


“The U.S. advanced energy market hit $200 billion, nearly double the nation’s beer market, larger than pharmaceutical manufacturing, and closing in on wholesale consumer electronics,” said AEE  in releasing the report last week.


“One of the things we want to tell the world is a lot of these better energy solutions are here today in the marketplace; people and companies and utilities are investing in them now and they are growing,” said Bob Keough, spokesman for AEE. “Increasingly, they are competing on their own in terms of price and value.”


While building efficiency may elicit yawns for some, there’s lot to be excited about in this sector. It was the largest single segment of advanced energy technology in the US by revenue, yielding $63.6 billion, he said.The report, conducted by Navigant Research, defines advanced energy technologies as high efficiency, advanced technologies, Keough noted.


“Building efficiency has been one of the most consistent drivers of revenue over the last five years, up steadily year after year, and up 50 percent overall between 2011 and 2015,” he said.


New technologies and higher investments in them drove the growth. More net zero energy buildings are being constructed, and installation of new lighting systems is growing.


While CFLs have been the lighting systems that yielded the biggest revenues in the past, LEDs and lighting controls are now big income generators, Keough noted.


Meanwhile, energy storage revenues increased more than 1,000 percent in one year — from $58 million in 2014 to $724 million in 2015. “It’s a  market segment that’s really taking off,” said Keough.


While California’s energy storage mandates are driving much of the growth, other parts of the country are also seeing investments in energy storage.


“Some of the utilities in California are buying more energy storage than they’re mandated to because they’re finding it’s so cost effective,” said Keough. “It’s starting to take hold everywhere. PJM in its control center has installed a  battery system from AES  that they claim saves $20 million a year.”


Frequency Reg Market Drives Storage


One of the drivers of the growth in energy storage is utilities’ need for frequency regulation.


“That’s often the area where utility-scale storage is going first because it’s a fast-response technology and very valuable as an ancillary service,” said Keough.  “Some California utilities are seeing energy storage as eventually being a peaking resource, as well as managing the variability of renewable energy.”


One of the AEE companies, Stem, is growing a market in which large energy users with high peak demand charges use battery storage to store energy when it’s inexpensive to use during periods of peak demand, which brings down their demand charges, Keough said.


building efficiency


In terms of job creation, energy efficiency leads the pack, said Keough. And so does California.


“There’s a lot happening in energy efficiency and we’re seeing new jobs created and transformation of existing jobs,” he said.  “The  number of people involved in installing HVAC equipment who are now installing high-efficiency equipment has grown. AEE has only quantified job growth in California to date, and found that there were more than 400,000 advanced energy jobs in the state in 2014. “We expect to verify that the number has grown to over half million jobs in 2015,” he said. “‘The vast majority are energy efficiency jobs. There’s no substitute for people installing equipment and materials.”


The advanced energy industry generated jobs at a 5 percent rate in California from 2013 to 2014, which was more than double the rate of overall state job growth — which was 2.2 percent –and about three times faster than the national job growth rate of 1.6 percent, according to a separate report from AEE, “California Advanced Energy Employment Survey.” Building efficiency and advanced electricity generation represent more than 90 percent of this employment, the report said.


The latest AEE report not only demonstrates that advanced energy technologies — especially building efficiency technologies — are being embraced by utilities, companies and businesses alike. They’re also an important contributor to the economy and environment — and that’s nothing to yawn about.


Read the AEE report here.


Track news about building efficiency and energy storage by subscribing to the Energy Efficiency Markets newsletter. It’s free.

Saturday, 5 March 2016

18 Initial Checks Of Electrical Installations Every Electrician MUST Perform

Testing of electrical installations // Before any testing of low voltage electrical installations (and equipment) is carried out, a detailed physical inspection must be made to ensure that everything is: To a relevant National or Harmonized European Standard Erected/installed in compliance with the IEE Regulations Not damaged in such a way that it could cause […]

Thursday, 3 March 2016

US Energy Storage Market Grew 243% in 2015, Largest Year on Record




The U.S. energy storage market just had both its best quarter and best year of all time. According to the GTM Research/Energy Storage Association’s U.S. Energy Storage Monitor 2015 Year in Review, the U.S. deployed 112 megawatts of energy storage capacity in the fourth quarter of 2015, bringing the annual total to 221 megawatts. This represents 161 megawatt-hours for the year.



Wednesday, 2 March 2016

Things you MUST verify when designing low voltage switchgear

Low voltage switchgear Low voltage switchgear and distribution boards form the link between the equipment for the generation (generators), transmission (cables, overhead lines) and transformation (transformers) of electrical energy on the one hand and the consumers, e.g. motors, solenoid valves, devices for heating, lighting, air conditioning, and the information technology on the other hand. For […]

Northwest Energy Efficiency Alliance Issues RFP for Energy Efficient Refrigeration Program

The Northwest Energy Efficiency Alliance (NEEA) is seeking assistance with its program for energy efficient refrigeration system operations and maintenance practices.


The organization seeks a contractor to collaborate on its  Refrigerating Engineers and Technicians Association Certified Refrigeration Energy Specialist initiative.


The program strives to create a market for industrial refrigeration professionals and generate cost-effective energy savings in the Northwest.  Industrial scale refrigeration and cold storage operations account for almost 10 percent of the electricity used by industrials in the Northwest, according to NEEA.


The winning bidder will help with market channel development, provide technical assistance, coordinate stakeholders, collect and analyze data and assist with administration and support.


The request for proposals (RFP)  encourages companies or teams to respond. They should have experience in industrial energy efficiency, the refrigeration and cold-storage industry, utility incentive programs, and project administration.


NEEA will weigh bids based on:



  • Responsiveness to the RFP and demonstrated understanding of the issues surrounding the project



  • The thoughtfulness and appropriateness of the proposed methodology used to accomplish the desired results of the project.



  • The experience and qualifications of the individuals who will execute and manage the project. (Note: Proposed staffing is a significant factor.)



  • The experience of the firm or team of firms making the proposal



  • The capability to execute the plan, including past experience and aptitude for collaboration



  • The cost of the contract as time & materials on a not-to-exceed basis


An intent to respond is due March 9; proposals are due March 24. NEEA expects to choose finalists March 31 and the winner April 21.  Work is expected to start in June.


The RFP can be found on NEEA’s website. The contact for information is Warren Fish, 503-688-5402, wfish@neea.org.


NEEA includes more than 140 Northwest utilities and energy efficiency organizations, working on behalf of more than 13 million energy consumers.


Track energy efficiency RFPs by subscribing to the Energy Efficiency Markets newsletter. It’s free.

Monday, 22 February 2016

What size of a frequency converter do I need? (4 methods to find out)

Frequency converter (FC) rating When determining the rating of a frequency converter at a given load the first step is to consider the load characteristics. There are four different methods for calculating the required output performance and the choice of method depends on the motor data. However, first lets start with the basics of motor []