VIDEO: 52kW Solar Install Time Lapse At YHI Auckland


Time Lapse video of rooftop solar panel installation/retrofit.

Originally posted on YHI Power News:

View the time lapse and drone footage of our recent 52kW Solar Install at YHI Auckland.

System Specs
• 210X Renesola 250W Virtus II modules.
• 1X Delta RPI M30 Inverter
• 2X Delta RPI M15A Inverters
• Mounting Componentry: S-5 Protea clamps with Neuton Power mounting rail & fittings

Installed by What Power Crisis.

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Company Developing Thermo-Electric Materials for Waste-Heat Energy Recovery

NASA’s Jet Propulsion Laboratory, Pasadena, California, has licensed patents on high-temperature thermoelectric materials to Evident Technologies, Troy, New York, which provides these kinds of materials and related power systems.


>” […] Thermoelectric materials convert heat into electricity. For example, by using this technology, waste-heat from a car could potentially be fed back into the vehicle and used to generate electricity. This would increase efficiency and deliver low-cost solutions for harvesting waste heat.

“The licensed technology could be applied to convert heat into electricity in a number of waste heat recovery applications, including automobile exhaust and high-temperature industrial processes such as ceramic and glass processing plants,” said Thierry Caillat, task leader for the thermoelectrics team at JPL.

JPL has a long history of high-temperature thermoelectric development driven by the need for space mission power in the absence of sunlight. Many space probes that leave Earth’s orbit use thermoelectrics as their electrical power source.  […]”<

See on Scoop.itGreen Energy Technologies & Development

The Smart City


“With this unprecedented access to information, Smart Cities will deliver new levels of efficiency, effectiveness, safety, reliability, and higher levels of service. This access enables a city to anticipate and prevent problems in areas like reducing accidents by rerouting traffic, and reducing crime by identifying hot spots. New insight also enables the provision of services like finding a parking spot, monitoring air pollution, intelligent lighting, and others. A sense and respond model (a key future enabler) allows for the delivery of many of these services without human intervention.

A next generation of efficiency is also enabled, as asset tracking will streamline operations and insight will deliver unprecedented levels of efficiency. For example, a recent survey of water utilities found a saving potential between $7.1 and $12.5 billion each year through smart water solutions. The chief globalization officer of Cisco has said that smart cities drive energy consumption savings of 30% and water consumption savings of 50%. These environmental benefits include reducing greenhouse gas emissions and improving waste management. Boston University Installed self-powered trash receptacles which wirelessly alerted collection vehicles when they were full, resulting in on-campus trash collection being reduced from 14 times per week to an average of 1.6 times per week.

The Smart City

The Smart City is Defined as a developed urban area that creates sustainable economic development and a high quality of life by excelling in multiple key areas; economy, mobility, environment, people, living, and government. Excelling in these key areas requires strong human capital, social capital, and information and communications technology. We are in the early days of an evolution towards Smart Cities, and IDC Government Insights finds that most cities are deploying these projects department by department. In a recent IDC White paper, they provide a maturity model to describe this Smart City evolution…”

Originally posted on Frank Diana's Blog:

Next up in this ongoing look at disruptive scenarios is the Smart City. For the first time in history, more than 50% of the world’s population lives in cities, and that percentage moves to 70% by 2050. This visual effectively captures the dramatic move towards urbanization:

Urbanization Statistics

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Bosch Buys Arizona Building Technology Firm


“Climatec is an independent single-source integrator of critical building systems including energy services, building automation and security system integration in the U.S. market. The company provides consulting, planning, implementation and around-the-clock remote management of comprehensive comfort, security, safety and efficiency solutions. Climatec is active in education, healthcare, the public sector, industrial/manufacturing, computing services, office buildings, federal, state and local government, hospitality and energy.”

Originally posted on TECHNOLOGY CENTURY—edited by Matt Roush:

FARMINGTON HILLS — Farmington Hills-based Robert Bosch North America Corp. has acquired Climatec LLC, a Phoenix, Ariz.-based provider of energy efficiency, building automation, security and safety products and services.

Climatec generated sales of $170 million in 2013, and according to preliminary figures hit $190 million in sales in 2014. The company employs 670 people at 12 offices in Arizona, California, Nevada and Texas.

Climatec has been owned by Pegasus Capital Advisors, L.P. since April 2012. Terms of the transaction were not disclosed.

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Nonpetroleum share of transportation fuel energy at highest level since 1954

“In the United States, petroleum is by far the most-consumed transportation fuel. But recently the share of fuels other than petroleum for U.S. transportation has increased to its highest level since 1954, a time when the use of coal-fired steam locomotives was declining and automobile use was growing rapidly.”


>” […] After nearly 50 years of relative stability at about 4%, the nonpetroleum share started increasing steadily in the mid-2000s, reaching 8.5% in 2014. Of the nonpetroleum fuels used for transportation, fuel ethanol has grown most rapidly in recent years, increasing by nearly one quadrillion British thermal units (Btu) between 2000 and 2014. Nearly all of the ethanol consumed was blended into gasoline in blends of 10% or less, but a small amount was used in vehicles capable of running on higher blends as the availability of those flexible-fuel vehicles grew. Consumption of biodiesel, most of it blended into diesel fuel for use in trucks and buses, grew to more than 180 trillion Btu by 2014.

In 2014, transportation use of natural gas reached a historic high of 946 trillion Btu, 3.5% of all natural gas used in the United States. Transportation natural gas is mostly used in the operation of pipelines, primarily to run compressor stations and to deliver natural gas to consumers. Natural gas used to fuel vehicles, although a much smaller amount, has more than doubled since 2000.

Electricity retail sales to the transportation sector grew more than 40% from 2000 through 2014, although sales have declined slightly since 2007. Electricity for transportation is mostly sold to railroads and railways. However, this increase does not include the consumption of electricity in electric vehicles that are not used in mass transit, because charging stations for these types of vehicles are likely associated with meters on residential, commercial, or industrial customer sites where this specific use may not be differentiated from other uses. […]”<

See on Scoop.itGreen Energy Technologies & Development

Water Waste, Leaking Pipes and Infrastructure Maintenance

Imagine Manhattan under 300 feet of water, not from a flood or rising sea level, but from the 2.1 trillion gallons of water lost from leaky pipes every year. That is nearly 6 billion gallons a day! The majority of leaks are a result of old infrastructure, pressure changes in the water mains, and small household leaks.


>”[…] Infrastructure leaks

About 14-18% of water treated in the United States is wasted through aging and damaged infrastructure, as well as faulty meters. The American Society of Civil Engineers recently gave the US a “D” grade for water infrastructure. Let’s take a look at a few cities around the US.

Chicago wastes about 22 billion gallons of treated water a year, enough to serve 700,000 individual needs for a whole year.The state of California loses about 228 billion gallons a year, which is more than the city of LA uses in a year. On average the state loses 49 gallons a day for every service connection, and Sacramento loses a whopping 135 gallons per connection.In 2013 San Francisco experienced over 100 water main breaks and New York averages over 400 a year.Houston lost 22 billion gallons of water in 2013, 15% of its total water supplyAccording to the EPA we lose about 34 billion gallons of drinking water a day in the United States, about 1/6 of public water systems supply.

Household water waste

Average household leaks can add up to over 10,000 gallons of water a year, enough water to wash 270 loads of laundry. Nationally, household water waste totals over a trillion gallons – or the equivalent of 11 million households’ yearly usage. The most common types of leaks at the household level are worn toilet flappers, dripping faucets, and leaky showerheads. 10% of US homes waste over 90 gallons a day just from these small fixtures. Here are some quick facts:

  • Faucets: 1 drip/second adds up to over 3,000 gallons a year (you can take 180 showers with that water!)
  • a showerhead leaking at 10 drips/minute wastes over 500 gallons a year (that’s 60 loads of dishes)
  • Old inefficient toilets can water up to 13,000 gallons a year
  • Irrigation leaks just the size of a dime will waste nearly 6,300 gallons a month

[…] Fixing easy leaks can save about 10% on your monthly water bill. Replacing that old toilet with a new efficient toilet could save you upwards of $2,400 over the toilet’s lifetime. […]”<

See on Scoop.itGreen & Sustainable News

Water Prices in 2015 Up 6 Percent in 30 Major U.S. Cities

Continuing a trend that reflects the disrepair and shows no sign of slowing, the price of residential water service in 30 major U.S. cities rose faster than the cost of nearly every other household staple last year …


>” […] The economics of water — particularly the cost of treatment, pumping, and new infrastructure, as well as the retail price for consumers — gained renewed prominence as California and Texas, America’s two most populous states, face historic droughts and water managers seek to rein in water consumption, with price increases as one tool in their arsenal.

The average monthly cost of water for a family of four using 100 gallons per person per day climbed 6 percent, according to data collected from the utilities. It is the smallest year-to-year change in the six-year history of the Circle of Blue survey but comparable to past years. The median increase this year was 4.5 percent. In comparison, the Consumer Price Index rose just 1.8 percent in the 12 months ending in March, not including the volatile food and energy sectors. Including food and energy, prices fell by 0.1 percent.

For families using 150 gallons and 50 gallons per person per day, average water prices rose 6 percent and 5.2 percent, respectively.

The survey results reflect broad trends in the municipal water industry that nearly every U.S. utility must grapple with, according to Andrew Ward, a director of U.S. public finance for Fitch Ratings, a credit agency.

Distribution pipes, which can branch for thousands of miles beneath a single city, have aged beyond their shelf life and crack open daily. Some assessments peg the national cost of repairing and replacing old pipes at more than $US 1 trillion over the next two decades. In addition, new treatment technologies are needed to meet Safe Drinking Water Act and Clean Water Act requirements, and cities must continue to pay down existing debts. At the same time, conservation measures have proven successful. Utilities are selling less water, but they still need big chunks of revenue to cover the substantial cost of building and maintaining a water system. All together, these and other factors amount to a persistent upward pressure on water rates. […]

See on Scoop.itGreen & Sustainable News

Idle Load Reduction Strategies for Energy Efficiency Gains and Clean Air

NRDC: Always-on but inactive devices may cost Americans $19 billion and 50 power plants’ worth of electricity annually.


>”  […]  Idle load or “baseload” electricity consumption includes appliances and equipment in off or “standby” mode but still drawing power; in “sleep mode” ready to power up quickly; and left fully on but inactive. Much of this always-on energy provides little or no benefit to the consumer because most devices are not performing their primary function and home occupants are not actively using them.

The Natural Resources Defense Council partnered with Home Energy Analytics and the Stanford Sustainable Systems Lab to assess the impact of the growing cohort of always-on devices on consumer utility bills. We used three separate data sets: smart meter data from 70,000 northern California homes; smart meter and additional information for 2,750 San Francisco Bay Area homes; and a detailed in-home audit of 10 Bay area homes.

We found that “always-on” electricity use by inactive devices represents on average nearly 23 percent of northern California household electricity consumption.

But if all homes in the United States reduced their always-on load for inactive devices to the level that a quarter of the homes in our study already achieve, it would:

save consumers $8 billion on their annual utility bills,avoid 64 billion kilowatt-hours of electricity use per year, andprevent 44 million metric tons of carbon dioxide pollution, or 4.6 percent of U.S. residential sector carbon dioxide (CO2) emissions from electricity generation.

[…] Ensuring that electronics, appliances, and miscellaneous electrical devices consume only as much electricity as necessary when unused presents a huge opportunity to save energy and money. Eliminating this energy waste also decreases the number of fossil fuel–burning power plants necessary to generate electricity, thereby reducing harmful air pollutants and carbon emissions that threaten our health and the environment.

Given that these power plants account for nearly 40 percent of U.S. carbon pollution, smarter energy use can have a measurable impact on overall emissions and would help states comply with emissions reduction targets under the government’s Clean Power Plan to set the first-ever limits on this dangerous pollution. In addition, optimizing energy use helps eliminate the need to build new expensive energy infrastructure, saving utilities and their customers money.

In the meantime, consumers can take these steps in their homes and businesses:

Optimize the efficiency of their current devices;Buy more efficient appliances, electronics, and miscellaneous devices, such as those labeled ENERGY STAR™, whether replacing old models or purchasing new ones;Urge lawmakers to enact idle load labeling so shoppers can avoid products with high idle loads; andInsist that all devices be required to meet idle load efficiency standards so there is no need to worry about models needlessly wasting electricity, the same way regulatory mechanisms ensure that our vehicles are safe to drive and foods are safe to eat.  “<

See on Scoop.itGreen Building Operations – Systems & Controls, Maintenance & Commissioning

California Resort Hotel First to Upgrade to Energy Storage + EV Charging

Shore Hotel in Santa Monica, California, is a luxury establishment with an energy storage system and fast DC electric vehicle (EV) charging — reportedly, the first one in the US to have this setup. It is expected that the lithium-ion energy storage system will help it reduce electricity demand charges by 50%. Over time, that savings


>” […]  So what is the connection between energy storage and EV charging? When an EV is plugged into a charger, electricity demand increases, so the hotel could be on the hook for a high rate for the electricity, depending on the time of day. Demand charges are based on the highest rate for 15 minutes in a billing cycle. So, obviously, a business would want to avoid spikes in electricity usage so it would not have to pay that rate.

That’s where the energy storage comes in. When there is a spike, electricity can be used from the energy storage system, instead of from a utility’s electricity. Avoiding demand charges in this way, as noted above, can thus help businesses save money. […]”<

See on Scoop.itGreen Energy Technologies & Development

DOE Energy Review Report Recommends Grid Modernization and Transmission System Upgrades

The Department of Energy (DOE) recently released its first installment of its Quadrennial Energy Review (QER) – a comprehensive report examining how the United States can modernize energy infrastructure to promote economic competitiveness, energy security, and environmental responsibility. This installment…


>” […]  Electric grid reform is timely due to a confluence of factors. First, our grid infrastructure is old and in dire need of upgrade. We could just patch up the existing system by replacing old poles and wires with new ones and call it a day. But given evolving customer preferences for more control over energy usage and newly available efficiency-enabling technologies, doing that would be like replacing an old rotary phone with a newer one instead of upgrading to a smart phone. Grid reform should also consider the changing environment, as grid reliability is increasingly threatened by severe weather. The continuing shift in the energy generation mix to include the benefits of more roof-top solar and remote wind generation will also require changes to our transmission grid.

QER electric grid modernization findings and recommendations

Here are some QER highlights relevant to FERC and what it can do to support a clean electricity grid. (Our Sustainable FERC Project coalition submitted comments to DOE on some of these items before the QER was finalized.)

The necessary transmission build-out for a low-carbon future is likely consistent with historic investment 

To access wind and solar renewable resources far from populated cities, we need long-distance transmission infrastructure. But how much is enough? The QER studied a variety of clean energy future cases, including scenarios with high penetrations of wind and solar power, a cap on climate-warming carbon dioxide emissions to achieve a 40 percent reduction in 2030, and increased natural gas prices. The scenarios produced a range of new transmission requirements, all consistent with our historic investment in transmission infrastructure. In other words, the needed transmission infrastructure build-out to get to a low-carbon future is reasonable. So it boils down to this: the nation will continue to invest billions of dollars in grid infrastructure updates whether we build for a clean energy future or ignore the potential for it – which will it be? We’d argue for the clean pathway to clean our air and stave off the worst effects of climate change

We can more efficiently use existing infrastructure to avoid unnecessary and costly transmission construction 

Just as the highways clog at rush hour, the electric grid gets congested when customer power demand is at its peak. The QER emphasizes that there are a number of ways to alleviate congestion on transmission wires without building costly new infrastructure. These include managing energy use through energy efficiency (smarter use of energy) and demand response (customer reduction in electricity use during high congestion times in exchange for compensation), locally supplying energy through distributed generation (such as rooftop solar), or using stored energy when the transmission lines are constrained. These alternatives not only reduce new transmission construction requirements, but come with the added bonus of improving electric service reliability and reducing pollution from electricity generation. Indeed, three important DOE-funded planning studies show that scenarios combining high levels of these resources can reduce the expected costs of new transmission investment (see a description of the Eastern Interconnection study here).

We can also avoid costly transmission construction by using existing transmission more efficiently through improved operations. Without getting into the wonky details, this means grid operators can adopt smart network technologies and better network management practices to minimize electricity transmission bottlenecks.

We need to appropriately value and compensate energy efficiency, demand response, energy storage, and other resources providing cleaner, cheaper grid services 

Unlike traditional power plants, energy efficiency, demand response, energy storage and other resources can nimbly respond to unanticipated grid events or meet energy demand without requiring extra transmission capacity at peak times. But these resources often offer more to the grid than they receive in compensation. Accurately valuing the services these resources provide would allow regulators and utilities to incent their participation in grid markets. The QER therefore recommends that DOE help develop frameworks to value and compensate grid services that promote a reliable, affordable, and environmentally sustainable grid. […]”<

See on Scoop.itGreen & Sustainable News