Monthly Archives: December 2012

Pecan Street Inc. Researchers’ Report Receives Outstanding Paper Award

By / Published: December 11, 2012

Source: Pecan Street Inc.

With 1.8 gigawatts (GW) of solar power installed in 2011 and an expected 2.8 GW in 2012, it is safe to say that solar energy has solidified its role as an important part of our nation’s energy portfolio. Affordability, competitive financing and reduced greenhouse gases are just a few of the reasons why the number of solar installations has skyrocketed in the past several years.

Now, new research from Dr. Alexis Kwasinski, Dr. Fabian Uriarte, and Amir Toliyat, engineers from the University of Texas at Austin, sheds some light on how rapidly growing solar installations can work with the current electric grid. For their groundbreaking findings in “Effects of high penetration levels of residential photovoltaic generation,” they were recently awarded an Outstanding Paper Award at the International Conference on Renewable Energy Research and Applications (ICRERA) in November for their in-depth research and innovative solutions.

Jump started by a $10.4 million grant from the Department of Energy, Pecan Street Inc. is a “community-wide collaboration to fully reinvent the energy delivery system” based in Austin, Texas. This living ‘smart grid laboratory’ provided a perfect data collection site for the researchers. Pecan Street’s leadership focuses on developing new technologies that reinvent the way we create and use energy, so that residents drive electric vehicles, invest in cutting-edge technology and, of course, use solar panels.

The massive amount of data gathered from Pecan Street’s efforts provided researchers the opportunity to analyze solar energy’s effect on the three key characteristics of “power quality” (voltage level, voltage unbalance and power factor). The researchers found that energy inflections (voltage levels and voltage unbalance) did not create any major concerns with the power grid, despite unfounded claims to the contrary by some solar critics.

Digging further into the data, the researchers unexpectedly found that power factor could become a real issue if solar installers don’t use modern equipment that provides for power factor support. While the issue could become very real at higher levels of solar penetration, the solution is simple, cheap and currently available; it simply means installers should begin using newer models of solar panel “inverters,” which convert solar power into electricity that can be fed into your grid and home.

Inverters simply convert raw DC power to AC power (i.e. the type of electricity we need to use everyday household items). Maximizing the amount of electricity that is converted into usable power makes solar energy more competitive, ensuring that it will remain an important and growing part of our nation’s energy mix.

It’s exciting to see that these researchers are receiving accolades for their groundbreaking work, and international acclaim is always an excellent motivator for this kind of work, but it’s nice to be appreciated where you hang your hat too. Fortunately that doesn’t seem to be a problem, since earlier this year Austinites voted in the Best of Austin 2012 award by the Austin Chronicle for Best Way to Turn Some Green Even Greener. Their choice: Pecan Street Inc.

On-Bill Repayment Bill Introduced In California

By Brad Copithorne / Published: December 7, 2012

This commentary was originally posted on the EDF California Dream 2.0 Blog.

Yesterday, California Senator Kevin de León introduced a bill, SB 37, which would create the first On-Bill Repayment (OBR) program entirely financed by private capital. OBR allows property owners to finance energy efficiency and renewable generation upgrades and repay the obligations through their utility bills.

Senator De León said that “every Californian should be able to participate in the clean energy economy, and OBR helps us achieve this goal.” He believes that “OBR will lower utility bills, reduce pollution from dirty energy, and put thousands of Californians back to work. I am proud to be working with a broad coalition dedicated to moving this bill forward.”

This bill will authorize the California Public Utilities Commission (CPUC) to extend their groundbreaking commercial OBR program to residential properties. (The commercial program is expected to be effective by the end of March and was recently profiled in the New York Times.) We expect the residential program to provide retrofit capital to consumers that might not otherwise have access to low-cost funding for retrofits. These retrofits are expected to save money for consumers after financing costs and in many cases allow for more comfortable, healthier homes.

EDF is committed to working with consumer groups to make sure that this bill includes appropriate consumer protections. We will also be working to expand a coalition of supporters from the environmental, labor, business and financial communities.

Posted in California, Energy Efficiency, On-bill repayment / Comments are closed

More To Come On Methane…

By Steven Hamburg / Published: December 6, 2012

Concerns around the impacts of methane emissions have reemerged in headlines, with the release of a methane leakage study about Boston. Published in the journal of Environmental Pollution a couple weeks ago, researchers from Boston University and Duke University measured atmospheric methane concentrations leaking from natural gas pipelines in Boston many of which are over a hundred years old. Another report issued last week by researchers at the Massachusetts Institute of Technology (published in Environmental Research Letters) looked at the impact of shale gas production on greenhouse gas emissions.

When talking about harmful greenhouse gases, carbon dioxide (CO2) usually gets most of the attention. Yet methane, the main ingredient in natural gas, is a short-lived greenhouse gas many times more potent than CO2 – or around 72 times more potent over a 20-year time frame. Stakes are high for the scientific community to fully understand the implications of methane leakage rates. These reports help elevate the issue that methane leakage matters to the climate and air quality, but this is only part of the story.

Methane is potentially leaking from the entire natural gas supply chain — from wells, pipelines and storage facilities — and no one knows precisely how much is leaking and where the leaks are stemming from. Some reports estimate the total methane leakage rate occurring during natural gas production, transmission and distribution to range anywhere from 1 to 7.9 percent. At the same time, the data that the Environmental Protection Agency (EPA) and everyone else rely on were collected 20 or more years ago.

A challenge for understanding the distribution of methane concentration data in Boston is that no one knows how to interpret the data yet. Maps of methane concentrations in the urban environment can be spurious. They may look scary, but are they? This and many other tough scientific questions still need to be answered, we are very early in the process of understanding how much methane is leaking and from where. The scientific community at large, including EDF and the authors of the Boston study, are committed to collecting the data necessary to addressing these concerns and to understanding the true climate impact of methane emissions.

EDF is working with leading academic researchers and industry leaders to conduct scientifically rigorous measurements of quantitative emissions across the natural gas supply chain from well to the end user. We are developing the methodologies where necessary to move past a ‘he said, she said’ conversation to one focused on data characterizing leak rates. The critical next step for us in using the increasingly robust data gathered from new innovative technologies is to precipitate a clear enough understanding of where the leaks are in the supply chain to catalyze a constructive conversation about what new policies and industry practices will be required to minimize methane leakage.

The first EDF fugitive methane report, focused on field measurements made at natural gas production sites, will be completed early next year under the leadership of the University of Texas Austin. EDF and our partners are using a diverse array of measurement techniques to characterize leak rates. We are also working to make basin-wide measurements within areas of natural gas production. Over the course of 2013 and early 2014, studies of emissions at other key components in the supply chain, including the local distribution system, will be completed and the data and conclusions released to the public.

EDF is actively campaigning to ensure that fugitive methane emissions from the natural gas industry are less than 1 percent of production in order to ensure that the climate benefits of natural gas are maximized. We see development of innovative, cost effective and accurate methane detection technologies and procedures as a necessary part of minimizing leak rates. Our view is that minimizing methane leakage is an important enough issue that we need to take the time to establish a scientific understanding of the underlying issues and by doing so defining effective well-targeted actions.

Posted in Climate, Methane, Natural Gas / Read 1 Response

EDF Energy Innovation Series Feature #16: Demand Management From REGEN Energy

By Jim Marston / Published: December 5, 2012

Throughout 2012, EDF’s Energy Innovation Series will highlight around 20 innovations across a broad range of energy categories, including smart grid and renewable energy technologies, energy efficiency financing, and progressive utilities, to name a few. This series will demonstrate that cost-effective, clean energy solutions are available now and imperative to lowering our dependence on fossil fuels.

For more information on this featured innovation, please view this video on REGEN Energy’s innovation here.

Mark Kerbel would like the world to think of every building as a giant beehive. In these bustling hubs of activity, each electrical device not only takes care of its individual tasks, but it is also aware of what the other devices are doing. They are part of a team and work together to minimize work and strengthen the “hive.”

Kerbel is co-founder of Toronto-based company REGEN Energy (REGEN). For REGEN, which makes wireless controllers that monitor and manage equipment with high power needs like heating and cooling, or “HVAC” systems, the beehive isn’t simply a sales pitch metaphor. Swarm theory is the company’s foundation.

For the last century, our outdated electric grid has generally worked the same way: energy is generated in a remote location and pushed to homes and businesses, where humans make most of the decisions about what switches are turned on and off. Demand management – like REGEN’s energy load management methodology – brings intelligent decision making into the process, which allows for more efficient use of energy, and helps reduce stress to the electric grid during peak times of energy demand by lessening consumer energy consumption.

Credit: REGEN Energy

“We think the natural world has a lot to teach us about efficiency,” said Kerbel. “And bees and other swarming animals are among nature’s best examples of teamwork and efficiency. Our technology injects swarm theory into a grid that has historically been simple and manual, and makes it intelligent and automatic.”

And much, much more efficient.

REGEN’s Swarm Energy Management technology employs a node at each electrical load in a building. For example, a large corporate campus might install a REGEN node on each HVAC unit. Using REGEN’s patented algorithms (which the company calls “swarm logic”), the nodes communicate with each other wirelessly and are able to balance the attached loads to smooth out the overall demand of a building. In a simple scenario, one HVAC unit might detect that another on a different part of a building will turn off in two minutes, and delay just long enough to avoid adding that extra load. But REGEN’s system can also handle more complex scenarios that consider dozens of nodes that control various types of loads.

All of this, REGEN states, can add up to a peak electrical demand reduction of 30 percent for commercial and industrial properties.

In the energy efficiency industry, things that save small amounts of energy are fairly simple and inexpensive. But improvements that reduce energy use as much as REGEN’s system are often cost prohibitive on the front end. REGEN promises quick energy reduction with a small up-front expense. And, because the parts of the system communicate wirelessly, it doesn’t require advanced metering or utility-side grid investments. It can work today, in many markets.

“The beauty of our system is that it is simultaneously elegant and simple,” Kerbel said. “It is very easy to install — one node per device you want to manage, and they communicate with each other. It doesn’t require any intervention from a customer’s IT department. So it’s easy to get online quickly and manage your loads without a massive retrofit or capital expense.”

Credit: REGEN Energy

In two early deployments in the U.S. — a big box retailer and a movie theatre chain — REGEN’s system resulted in enough energy savings to recoup the system’s cost in one to two years.

As the consumer electronic world evolves, we expect electrical devices to have this kind of awareness and intelligence. But heating and cooling represent such a large proportion of peak demand that it’s a logical, helpful and profitable place to start. And, because the payback period is so short, this is a great investment for schools, large corporate campuses and other multi-building sites that have intensive energy needs.

Posted in Energy Efficiency, Energy Innovation / Comments are closed

On-Bill Repayment: A Way To Eliminate The Upfront Costs For Energy Efficiency Projects

By Kate Zerrenner / Published: December 3, 2012

When a state is facing electric resource shortages, like Texas is, it’s just common sense to explore all the ways to make our electric use more efficient. We know efficiency makes sense – in terms of grid reliability, lower emissions, and reduced costs to ratepayers. But there is a barrier to some ratepayers in implementing more energy efficiency: upfront costs. Several options currently exist to finance efficiency, such as home equity loans and incentive programs through utilities. But what about creating a market to allow private investors to invest in the market by offering lower rates for utility customers by ensuring some security through repayment on the utility bill? That’s what on-bill repayment aims to do.

On-bill repayment (OBR) offers an opportunity for home and building owners to finance energy efficiency and renewable electricity generation projects through cost-saving loans from third-party investors. The loans are repaid through customer’s utility bills. The money comes from private sector lenders at no cost to ratepayers or taxpayers. OBR also allows for longer term loans with lower interest rates.

The general concept of OBR is not new. Several utilities around the country have instituted on-bill finance programs. However, there is a key difference. On-bill finance programs use utility money to finance the program, thus creating an additional cost for the ratepayers. On-bill repayment would use new money from third parties, such as banks, to create a new market that is secure, cost effective, and enables more bang for the buck in terms of what the ratepayer receives.

OBR is a flexible program that works for a wide variety of properties and vendor business models. In some programs, contractors are told what solutions can be offered to each customer. OBR, on the other hand, allows each contractor or vendor significant latitude to design solutions that meet the needs for their customers. This could include everything from insulation upgrades for residential customers or lighting upgrades for restaurants all the way to deep retrofits of commercial or industrial properties. All of these would be delivered by the private sector and would be completely voluntary to each property owner.

Benefits of OBR include:

Job growth: We estimate that it could generate 100,000 new jobs to install energy efficiency and renewable electricity.
New market creation: We estimate that OBR could generate $13.5 billion over a decade in private sector investments in energy efficiency, renewable generation, and demand response projects.
Ratepayer and state savings: OBR would promote energy efficiency and distributed energy resources that avoid the cost of expensive new power plants and other high-cost generation—saving ratepayers $4.8 billion in energy bills.
Flexibility for contractors and vendors: Program participants would have considerable discretion to design product offerings and go-to-market strategies to meet their customers’ needs.

In a state like Texas that prides itself on making its economy attractive to investors and creating markets, especially in the energy sector, OBR could be an effective tool to opening up the state to a private sector solution that can ameliorate our Texas energy crunch. Efficiency is an investment that makes sense for Texas. As utilities face increasing demands on their energy resources, and fewer dollars to spend on efficiency for their customers, giving them another tool, energized by funds from the private market, will benefit the entire state.

Posted in Energy Efficiency, On-bill repayment, Texas / Read 1 Response