Tag Archives: Pv Solar Installations

Santa Monica Mandates Rooftop Solar On New Buildings

San Francisco recently made headlines for establishing an ordinance requiring solar installations on new buildings, and now, yet another California city has passed similar legislation.

The Santa Monica City Council has approved an ordinance mandating rooftop solar systems on all new residential and commercial buildings in the city. And although San Francisco’s ordinance goes into effect in 2017, Santa Monica’s kicks off in fewer than 30 days, on May 26. Other cities in the Sunshine State that created such solar mandates include Sebastopol and Lancaster, which passed their ordinances in 2013.

According to the Santa Monica government, the ordinance capitalizes on market trends in the solar industry. With the cost of solar installations continuing to decrease, Santa Monica residents and developers will now generate renewable energy, improve the value of their property, and contribute to the city’s long-range goals for energy and climate mitigation, including reaching carbon neutrality by 2050.

Read full article from Solar Industry

 

Aquion installs storage for microgrid at California winery and farm

By Peter Maloney, Utility Dive

Aquion Energy and Ideal Power have teamed up to provide storage capability to a microgrid that enables a California winery and farm to be energy self-sufficient.

Aquion supplied its aqueous hybrid ion batteries for the project, connecting them with Ideal Power’s grid resilient 30-kW multi-port power conversion system as part of a microgrid at Stone Edge Farm, a 16-acre organic winery and farm in Sonoma County. The energy storage installation provides the farm and winery the capability for solar self-consumption, peak shaving and load shifting services.

The solar + storage installation is designed to provide energy for a number of buildings on the site, including the primary residence, offices and workshops. The grid-tied microgrid, developed by Wooster Engineering Specialties, is capable of islanding and operating autonomously and of generating enough energy that Stone Edge Farm is able to sell some of the energy back to Pacific Gas and Electric.  During daylight hours, solar PV provides energy for the buildings and charges the batteries. During nighttime hours and periods of cloud cover, the batteries provide energy for building loads.

Read full article from Utility Dive

Related: Aquion Energy’s AHI batteries and Ideal Power’s power conversion system bring energy independence and resiliency to Sonoma Winery (Press Release) – April 26, 2016

Too Much Solar in California? Not If You Bottle It

By Lauren Sommer, KQED

The cost of solar power has plummeted in recent years, which has led to a renewable energy boom in California.

But there’s a big hang-up: solar energy doesn’t provide a 24-hour supply. When the sun sets, the power from solar farms drops off, just as California needs it most. That’s sparked new interest in technology that stores electricity. And the energy storage technology race is going far beyond your typical battery.

Solar Peaking

“Pretty much everyday, we hit peak output,” says Michael Wheeler, a vice president at Recurrent Energy in San Francisco, looking at a screen showing the solar farms his company manages. But earlier this spring, something happened that, at first, doesn’t seem to make sense.

It was the middle of the day, when one of the solar farms was cranking out electricity, and his company got a message. There was too much electricity on the grid. The electric grid managers were telling solar farms to shut down. “The project went from almost peak output to zero for about two hours,” he says.

This happens on sunny, spring days when there is plenty of solar power but Californians aren’t using a lot of air conditioning yet, so demand for power is low. The solar and wind power comes in on top of what natural gas power plants are generating. Because renewable energy production goes up and down with passing clouds and wind conditions, grid operators say they need the continuous supply from natural gas to make up for those fluctuations.

Shutting down natural gas would leave the power supply less stable. Many gas plants can take between four and eight hours to restart, once they’re turned off. As more solar farms come online, the pressure to shut them down on mild, sunny days is only expected to become greater. California plans to get 50 percent of its electricity from renewable sources by 2030.

Read full article from KQED

Related article: What will California do with too much solar? (KQED) – April 4, 2016

California’s Distributed Energy Future

GTM Research has established itself as the premier source of information on solar industry trends and developments in the United States. It’s instructive that from that perspective, they chose to organize a conference focusing on a single state, California.

We who participate in the solar industry here have recognized the state as a leader, but the less patronizing among us also recognize that the magnitude of this lead is only temporary. If solar is to realize its potential as one means of reducing environmental damage while reducing future customer utility costs, then other parts of the United States need to catch up (and as GTM’s latest data for 2015 shows, they are).

Nonetheless, as GTM Research Senior Vice President Shayle Kann observed in his opening keynote at GTM’s California Distributed Energy Future conference in San Francisco, California remains the epicenter of next generation distributed energy (DE) regulation and is at the forefront of the shift toward distributed energy in the U.S. And (I would add) what happens in California doesn’t always stay in California. Hence the conference to examine California’s transition to a distributed energy future and consider what’s working and what isn’t.

The discussions at the conference covered a variety of issues confronting the state. Here is an overview of the key themes coming out of the discussions, and the insights shared by the different speakers:

The strongest and most frequently recurring theme was that of the interaction of Distributed Energy Resources (DERs, essentially distributed solar PV) and the electrical grid. This issue has numerous dimensions, and subsequent “fireside chats” helped highlight some of these.

Appropriately the first discussion was with a Senior Vice President from Pacific Gas & Electric (PG&E), California’s largest investor-owned utility (IOU) and the utility with more connected PV capacity than any other in the United States. Issues were fairly raised: e.g., how should rates be structured to fairly compensate the value of Grid access received by the customer, how does PG&E envision an environment of growing Community Choice Aggregation (CCA) systems and how is the Grid managed for reliability. Unfortunately, the moderator for this session let the PG&E representative off with the stock, PR answers: “we have to make changes in our rate structures”, “they can work, note how long Marin (Clean Energy, 2010) and Sonoma (Clean Power, 2014) have been in service”, and “we need to build in robustness.”

Ah well, at least subsequent chats returned to DER issues in more depth. DERs can lower costs for Grid operators / managers; experiments were cited by both Southern California Edison (SCE) and San Diego Gas & Electric (SDG&E) involving combinations of storage and DERs. Time of Use (TOU) pricing is coming, and 150 studies worldwide on this issue indicate that customers like this. But there is just too little experience with California’s residential customers while the customers themselves have too little information on which to make decisions as to costs versus savings.

Questions were also raised about Grid planning, to which respondents appeared to agree that too much is moving to identify a “right” strategy, especially as there isn’t even agreement on how to weigh technical issues such as reliability against other social goals we “should” be pursuing. The underlying complexity raised by these superficially straightforward questions was well-highlighted.

Michael Picker, President of the California Public Utility Commission (CPUC) noted that despite all the issues the CPUC addresses, DE issues are of significant importance. CPUC needs to consider even the framework for its decision making processes going forward. A system designed to regulate railroads in the 1890’s may not provide the responsiveness and flexibility for regulating changes to utilities in a rapidly evolving technological, economic and social environment. The “adversarial” approach used in CPUC proceedings may not be the best approach—why is the current process more dependent on legal skills than on engineering skills? The desire is to move forward not too fast, not too slow in opening the market to competition while allowing utilities to remain viable business entities. These are issues that could keep one up at night.

Michael Picker (CPUC, left) and Shayle Kann (GTM, right) during their “Fireside Chat”

GTM California's Distributed Energy Future Conference

The second, albeit lesser, recurring theme I heard at the conference was that of CCA developments. Until this year, there have been only three of these organized in California: Marin (with subsequent geographic extensions) and Sonoma were cited above, and Lancaster Choice Energy was launched in 2015. San Francisco’s Clean Power SF, Silicon Valley Clean Energy and Peninsula Clean Energy (San Mateo County) are in the process of launching this year.

As Mark Ferron, CAISO Board of Governors, cited, in 5 years 60% of the state’s eligible population could potentially be served by CCA’s if all programs now in discussion came to completion in that time. He provided a link in later discussion which I repeat here for those who want to follow up on the tally he reported: climateprotection.tumblr.com/tagged/Community-Choice

CCA’s make solar available to those in multi-family dwellings or who own a home not situated with a solar-favorable orientation or location. Expansion of solar power to these customers is required if solar-based power is to expand. Yet as Michael Picker observed, CCA “forced collectivization is a coup against the traditional utility model, challenging utilities and eroding the role of the PUC.” We don’t know yet where this takes existing suppliers and industry participants.

The challenges of the new, evolving energy infrastructure are actively being addressed by the states of California and New York. Conferences such as this provide an excellent opportunity to reflect on the issues and the difficulty this transition poses for firms competing in the market, regulators and the state legislatures who will eventually need to rewrite the rules for structuring state energy markets.

Yikes! Is California’s interest in Solar Energy Collapsing?

GTM Research and the Solar Energy Industries Association (SEIA) released their US Solar Market Insight 2015 Year in Review on Wednesday, March 9. We’ve been tracking their PV capacity reports for the past several years, and in the figure below we plot the 2015 capacity increases reported in their Executive Summary.

While there was strong national growth in installation capacity this past year, California’s capacity additions were less than in 2014. After a couple years of providing over half the annual capacity additions in the country (57% last year), California’s share has fallen to a mere 45%.

 Annual PV Installations: California and U.S. Total (2010-2015)

Annual PV Installations: California & U.S. Total (2010-2015)

We picked ourselves up off the floor and asked “What is happening; is this for real?” So we called GTM Research and checked other sources to find out what in the world was going on. Turns out that despite the disastrous looking change, solar growth in California remains alive and well.
Turns out the primary reason for the downturn is a sharp decline in Utility-scale PV projects. According to GTM, these additions fell to the vicinity of 1800 MW last year. [I wish we could afford the $2000 – $6000 for the full report that our SEIA Membership entitles us to so that we could access all the GTM data. But we live in lean times and use information from diverse public sources such as US Energy Information Agency (EIA) and California Energy Commission (CEC) as well as GTM’s summaries to inform our understanding.]

According to EIA information published in late February, it appears that Utility-scale solar PV expanded by 2000 MW in 2014, but only 1100 MW (preliminary) in 2015. Data from diverse sources rarely match-up year-to-year, but the trends are identical—California’s utility-scale PV installations experienced a sharp reduction in 2015.

After checking the CEC’s most recent Tracking Progress, Renewable Energy-Overview, we can see why—the utility industry is ahead of target for meeting the state’s 2016 Renewable Portfolio Standard (RPS) 25% goal. The industry achieved almost 25% renewables in 2014! The state added approximately 4000 MW of utility scale PV capacity between 2013 and 2015. Utilities are meeting their target early; the apparent slowdown is a temporary pause while utilities work on the installations that will get the state to 33% renewable electricity by 2020.

Distributed generation activity remains strong in California, both in the Residential and Non-Residential segments. The state’s residential customers generated demand for approximately 1000 MW of installations—almost half the national total of 2100 MW. And other distributed generation customers (eg, commercial rooftops) account for about another 300 MW.

So for the first time in years, California’s share of new solar PV installation is now less than half the national total. Good news! The rest of the country is waking up to the benefits of solar energy with capacity increasing in numerous states. The Utility sector is leading this expansion, while the residential sector growth is accelerating. We’re pleased to see this expansion.

Whole Foods teaming with NRG and Solar City to install rooftop solar at 100 stores

By Samantha Masunaga, The Los Angeles Times

Whole Foods Market Inc. is embracing solar power. The Austin, Texas-based grocery chain has signed agreements with SolarCity and NRG Energy Inc. to install rooftop solar units at up to 100 stores and distribution centers.

NRG, based in Princeton, N.J., will install the units at up to 84 locations in nine states, according to a joint statement from the two companies. San Mateo, Calif.-based SolarCity will install the rest, Whole Foods spokeswoman Blaire Kniffin said.

The companies did not disclose the locations of the stores that will receive the rooftop solar units, but Kathy Loftus, Whole Foods’ global leader for sustainability, said the company’s goal was to have rooftop solar units in every region. A store’s rooftop solar unit can generate about 5% to 20% of the yearly electricity that store needs, Loftus said. In a statement, Whole Foods said it would buy discounted power from SolarCity.

Whole Foods says it currently has rooftop solar installed at 20 stores. Tuesday’s announcement comes 14 years after the chain installed solar-powered lighting for the first time, at a store in Berkeley. Installation of the newly announced solar units will begin in the spring, Loftus said.

Read full article in the Los Angeles Times

SunPower Solar Power Systems Planned for Four Escondido Union High School District Schools

Escondido Union High School District (EUHSD) and SunPower Corp. today announced a power purchase agreement (PPA) under which SunPower will build two megawatts of solar power systems at four district schools. The district estimates that the agreement will offset approximately 75 percent of its annual electricity demand, and save $13.4 million in electricity costs over the next 20 years.

Requiring no upfront capital investment on behalf of the district, the PPA provides EUHSD with competitive electricity rates and a hedge against potential utility rate increases.

“As a result of this agreement with SunPower, Escondido Union High School District will significantly reduce our energy costs, enabling us to apply the savings where they are needed, such as for enhanced academic programs or facility upgrades,” said EUHSD Assistant Superintendent of Business Services. “SunPower’s deep experience working with school districts is as important as the long-term performance of its technology. We are proud to support the development of additional solar power resources in our community.”

Read full press release from SunPower

Related Article: Local schools save with solar panels, batteries (San Diego Union-Tribune) − Dec. 16, 2015

Local schools save with solar panels, batteries

By Pat Maio, The San Diego Union-Tribune

With power rates skyrocketing for San Diego County school districts, Escondido’s has become the latest to agree to a power purchase agreement with a Silicon Valley-based solar company. The deal could help bring $9.8 million in savings over the next 20 years, a district official said.

Escondido Union High School District has dodged some of the larger power bills hitting school districts in San Diego County because of past initiatives to replace old heating and air-conditioning units, and replace light fixtures with more-efficient ones, said Michael Simonson, associate superintendent of business services with the Escondido school district. Over the past two school years, for instance, the Escondido school district has cut its demand for power by 958,000 kilowatt hours.

Meanwhile, its power bill from San Diego Gas & Electric Co. has risen by about $195,000, or 13 percent, from $1.43 million in the 2013-14 school year to $1.62 million, this past year. “The increased costs paid to utilities are dollars that we can’t spend on the classroom,” Simonson said. “We are trying to put that destiny in our hands and balance out some of those potential rate increases. When you look at what is in front of us, this is a good start for the next 20 years.”

San Jose-based SunPower Corp. hopes to begin construction of the solar panels by next summer at Del Lago Academy, and Orange Glen, San Pasqual and Escondido high schools. The panels will be situated atop carports planned for the student parking lots, and will provide shade during the day, and protection from rainy weather. The carports will be wide enough to shade two rows of cars.

The solar panels are just one part of the Escondido district’s energy-conservation plans. Tesla Motors Inc. also has a deal in place to build stationary battery storage systems for three of the Escondido school district’s high schools — a project that officials hope could save hundreds of thousands of dollars annually in electricity costs.

Read full article in the San Diego Union-Tribune

Rooftop Solar Brings Higher Home Appraisals

By Katherine Tweed, Greentech Media

Homes with rooftop solar are appraised at a higher value, according to new research from Lawrence Berkeley National Laboratory.

For the past few years, Berkeley Lab has been collecting data on the value of homes with solar photovoltaics compared to those without PV. Early studies relied on modeling and found that buyers were willing to pay an average of $15,000 more for a home with a solar PV array. Another study from January, based on survey data, found that homebuyers were also willing to pay a premium for leased systems.

The latest piece of research furthers those findings by assessing appraisals for PV homes in six markets within Oregon, California, North Carolina, Florida, Pennsylvania and Maryland. The appraisal premium ranged from about 3 percent to 6 percent based on the region, with a price boost of about $10,000 to $22,000. The valuations were based upon PV homes compared against comparable non-PV homes by local appraisers.

Read full article from Greentech Media

NAS Lemoore could sign contract for mega-solar farm next month

By John Lindt, The Fresno Business Journal

The U.S. Navy has a goal to develop 1 gigawatt (1,000 MW) of renewable energy by 2020, enough power to light up 700,000 homes. Now it looks like Naval Air Station Lemoore could generate nearly 40 percent of that figure on its own.

The Kings County base is set to welcome new F-35 strike fighter jets that will be landing in what will be a sea of perhaps 1 million solar panels planted next to the runway—the largest solar plant at an airport in the world. The Navy is looking to lease out 3,000-5,000 acres of land surrounding the NAS Lemoore installation to a solar development company that would build a 390 MW solar farm, according to a solicitation. By contrast, Nellis Air Force base in Nevada is the largest solar military airport now at 15 MW on 140 acres.

The Navy studied the idea at Lemoore a few years back and more formally started the process in January. Officials decided the environmental impact of the proposed project was negligible, so now they can move forward if ongoing negotiations with a private solar firm go well.  The Navy and a private partner would enter into an agreement to allow the private partner to use Navy land to construct, operate and own the proposed solar photovoltaic system. The partner would sell the generated power to regional customers, and would be responsible for the plant’s maintenance, operation, and eventual decommissioning.

Including the infrastructure, the total construction period for the project would be approximately four years, putting it online in 2020. With more large scale solar coming to Kings County, the addition of nearly 400 megawatts of power would mean the county’s total capacity, either built or permitted, would total nearly 900 megawatts.

Read full article in the Fresno Business Journal