Thứ Sáu, 28 tháng 2, 2020

RPCS strengthens partnership with Today’s Power, Inc. with 2020 pipeline

Todays Power

RP Construction Services, Inc. (RPCS) has strengthened its partnership with electric cooperative subsidiary Today’s Power, Inc. (TPI) by announcing their 2020 pipeline of projects to be built in TPI’s home state of Arkansas.

The projects, totaling more than 5 MW DC, will be supplied and installed in partnership with RPCS. All will feature DuraTrack HZ v3 single-axis solar trackers by Array Technologies. Array’s mounting technology keeps the modules following the sun on its course throughout the day, ensuring up to a 20 to 25% increase in energy production over fixed-tilt systems.

Today’s Power, a wholly owned subsidiary of Little Rock-based utility service cooperative Arkansas Electric Cooperatives, Inc. (AECI), will receive RPCS’s turnkey service and support throughout the design and installation processes.

The newly established 2020 pipeline comes in the wake of recently completed projects built under the RPCS-TPI partnership, including the Fayetteville East and Fayetteville West projects in Fayetteville, Arkansas, totaling over 11MW. These TPI projects include the first solar-coupled battery energy storage systems (BESS) in the Mid-South, and the largest solar array on municipal land in Arkansas.

Other projects, namely those for the City of Paris, Arkansas, and for Southland Gin, a cotton gin, will soon be underway and are expected to be completed in the spring and summer, respectively, of 2020. The 1 MW Southland Gin project, which will be owned and operated by Today’s Power, will consist in part of a DuraTrack HZ v3 single-axis tracking system, and will offset the power costs of the gin and through net metering. The array will also feature on-site battery storage, using battery backups for power savings during peak demand, reducing the load on the overall system.

“It has truly been a great pleasure working with Today’s Power,” says RPCS Sales Director Patty Thornton. “The knowledge they bring to the table coupled with the speed and accuracy that they complete the projects is beyond a five-star rating. RPCS is looking forward to building on the partnership we established in 2019.”

-- Solar Builder magazine


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Panasonic launches new Elite Tier in its Residential Solar Installer Program (with cool perks)

Panasonic solar solutions

Panasonic added an Elite tier to its Residential Solar Installer Program to recognize and reward standout installers with best-in-class benefits. This exclusive tier is only available to the highest-performing Panasonic residential solar installers who have established successful, longstanding partnerships between their businesses and Panasonic.

This new addition introduces the third level of the program, building on existing Authorized and Premium installer categories.

Panasonic Elite Installers will be the first in Panasonic’s network to gain access to new products and rebates, while enjoying preferred access to product availability and the best pricing. These installers will also retain their Premium Installer benefits, including exclusive access to leads generated from Panasonic’s website, cooperative marketing funds and a robust Installer Portal, which is designed to help them grow their business.

“As solar energy gains momentum in the U.S., knowledgeable and skilled installers are more critical for customers and vital to our business than ever. As trusted advisers, they are responsible for providing customers with the best recommendations for effective and reliable solar solutions on the market,” said Mukesh Sethi, group manager, Panasonic Life Solutions Company of America. “The new Elite tier of the Panasonic Solar Residential Solar Installer program is our way of saying Thank You to those installers who consistently exceed Panasonic’s high standard of excellence.”

February is Operations & Maintenance Month here at Solar Builder. Check out all of our O&M news and insights this month right here.

Since its U.S. launch in 2016, the Panasonic Solar Installer Program has grown to include 51 Premium Installers and 176 Authorized Installers.

“We are excited to introduce this new tier to our top-achieving premium installers in the Panasonic Residential Solar Installer program,” said Yessica Castillo, National Marketing Manager, Panasonic Life Solutions Company of America. “These installers have shown they are committed to providing the best solutions to homeowners together with Panasonic, and we want to thank them for their business, loyalty and trust.”

-- Solar Builder magazine


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क्या E-रिक्शा सोलर पैनल से चल सकती है?

आज-कल हम हर शहर की सड़कों पर बढ़ती संख्या में E-रिक्शाएं देख रहे हैं। इन रिक्शाओं को चलाने का काम बिजली की मोटर करती है। मोटर को बिजली मिलती है रिक्शा के साथ लगी हुई बैटरीओं से। इन बैटरीओं को पावर सप्लाय के २३० वॉल्ट वाले सामान्य सॉकेट से चार्ज किया जाता है। पूरे चार्ज पर रिक्शा कुछ ६० कि॰मी॰ जितना चलती है।

 

आज हम सोलर पैनल्स की मदद से अपनी बिजली भी पैदा कर सकते हैं। सौर्य बिजली हमें कुछ हद तक पावर सप्लाय की बिजली से स्वतंत्र कर देती है। तो सवाल यह होता है कि क्यों ना रिक्शा के ऊपर ही सोलर पैनल लगा कर रिक्शा को चलाया जाय? क्या यह संभव है कि ऐसी सोलर रिक्शा के चलते-चलते उसकी बैटरी चार्ज भी होती जाय? और बार-बार उसे २३० वॉल्ट के सॉकेट तक चार्जिंग के लिए ले जाना ना रहे?

 

E Rickshaw Battery

 

यह सचमुच में एक अच्छा सवाल है। जवाब में हम देखेंगे कि ऐसा क्यों पूरी तरह से संभव नहीं है।

 

वीडियो जरूर देखें

 

 

मान लीजिए कि रिक्शा की मोटर १००० वॉट की है। और मान लीजिए कि पूरे चार्ज पर रिक्शा ६० कि॰मी॰ चलती है। यह आंकडे थोड़े कम-ज़्यादा हो सकते हैं, पर फिर भी इन्हींसे हम एक सादा सा हिसाब लगाएंगे।

 

रिक्शा की रफ्तार तो शहर में कम-ज़्यादा होती रहती है, पर मान लीजिए कि वह औसतन २० कि॰मी॰ प्रति घंटे की रफ्तार से चलती है। इसका मतलब हुआ कि पूरे चार्ज पर रिक्शा ६०/२० = ३ घंटे चलती है।

 

e rickshaw

 

अब क्योंकि रिक्शा की मोटर १००० वॉट की है, रिक्शा एक दिन में १००० वॉट x ३ घंटे = ३ किलोवॉट-अवर (kWh) = 3 युनिट जितनी बिजली ऊर्जा का उपयोग करेगी।

 

मान लीजिए इस रिक्शा की बैटरी को रात में पावर सप्लाय से पूरा चार्ज किया गया था। तो इसका मतलब हुआ कि बैटरी की क्षमता है ३ युनिट, या उससे ज़्यादा। रिक्शा में अगर १२ वॉल्ट की ४ बैटरीयाँ लगी हैं, तो हर बैटरी की रेटिंग हुई ३०००/४८ = लगभग ६० Ah, या उससे ज़्यादा।

 

वैसे तो बहुत बड़ी बैटरी लगाने से रिक्शा ज़्यादा चलेगी। मगर यह सुझाव पूरी तरह से व्यवहारू नहीं है। क्योंकि बहुत बड़ी बैटरी का वजन भी बहुत बड़ा होगा, जिसके कारण रिक्शा की औसतन रफ्तार कम हो जाएगी।        

 

ऊपर किया हुआ सारा हिसाब उस रिक्शा को लागू होता है जिसमें सोलर पैनल नहीं लगी है। अब हम देखेंगे कि सोलर पैनल लगाने से कितना फ़ायदा हो सकता है।

 

सोलर पैनल लगभग १० वर्ग मीटर में १००० वॉट = १ किलोवॉट सौर्य बिजली पैदा करती है। E-रिक्शा की जो साइज़ होती है, उसके ऊपर ज़्यादा-से-ज़्यादा कुछ ४ वर्ग मीटर की पैनल लग सकती है। उससे भी बड़ी पैनल लगाने से रिक्शा को चलाने और पार्क करने में दिक्कत आएगी, और पैनल को नुकसान भी हो सकता है।

 

loom solar panel size

 

अपनी ४ वर्ग मीटर की पैनल से रिक्शा को दोपहर में ४०० वॉट बिजली मिलेगी। अगर रिक्शा दोपहर के पूरे ५-६ घंटे धूप में रहे या धूप में चले, तो ४०० वॉट की सोलर पैनल लगभग २ युनिट सौर्य ऊर्जा पैदा करेगी।

 

ऊपर हमने देखा कि बैटरी की क्षमता है ३ युनिट या ज़्यादा। रिक्शा अगर दोपहर के ५-६ घंटे धूप में रहे या चले, तो उसे अतिरिक्त २ युनिट ऊर्जा मिलेगी। तो रिक्शा की रेंज, याने दूरी काटने की क्षमता, ठीक उसी प्रमाण में बढ़ जाएगी। याने उसकी रेंज हो जाएगी ६० x ५/३ = १०० कि॰मी॰, बशर्ते यह कि दोपहर के पहले बैटरी को पूरा चार्ज कर दिया गया था।

 

 

पर हकीकत यह है कि शहर में E-रिक्शा को दोपहर के पूरे 5-6 घंटे धूप में रखना या चलाना संभव ही नहीं है। पतली सड़कें होती हैं, और उनके दोनों बाजू बड़ी-बड़ी बिल्डिंग्स। मान लीजिए कि रिक्शा को ५० प्रतिशत ही धूप मिली। तो उसकी रेंज हो जाएगी ६० x ४/३ = ८० कि॰मी॰। याने की सोलर पैनल से रिक्शा को मिले अतिरिक्त सिर्फ २० कि॰मी॰

 

इस गणित से यह संकेत मिलता है, कि सोलर पैनल लगाने से रिक्शा के व्यापार में जो फ़ायदा होता है, वह पैनल की लागत के प्रमाण में काफ़ी मर्यादित है और वह भी इस पर निर्भर करता है कि दोपहर में रिक्शा कितनी धूप खा सकती है।

 

भविष्य में सोलर पैनल्स की सौर्य ऊर्जा ग्रहण करने की कार्यदक्षता (efficiency) शायद बढ़े। तब हो सकता है कि ऊपर दिये हुए गणित में काफ़ी सुधार आए। पर तब तक तो हमें इसी गणित के आधार पर चलना होगा!  


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Tunisia introduces new rules for self-consumption, net metering

The new regulatory framework includes the option to sell electricity to large energy consumers through bilateral PPAs.

The Tunisian government has issued a decree that will allow private companies to produce renewable energy for self-consumption purposes, with excess power to be sold to utility STEG under net metering rules, in addition to the right to sell electricity to large energy consumers.

The authorities did not specify the maximum limit for the sale of surplus power. The new rules set out  the conditions under which national grid infrastructure can be used by projects to sell electricity to third-party customers through bilateral PPAs.

The measures are also aimed at increasing the competitiveness of energy-intensive businesses in Tunisia, the government said. “They may now secure an important part of their electricity at a low and stable cost,” it explained, without providing additional details about the new scheme.

So far, the government has mainly supported large-scale solar projects through a series of tenders, including auctions for projects up to 10 MW and tenders for larger projects.

Tunisia had installed around 47 MW of solar by the end of 2018. Under its renewable energy strategy, the North African country aims to reach 4.7 GW of renewable energy capacity by 2030.


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Solar energy growing faster than all renewables in latest U.S. Energy Information Administration report

solar energy growth

What he said.

Renewable energy sources (i.e., biomass, geothermal, hydropower, solar, wind) accounted for 18.2% of net domestic electrical generation during 2019, according to a SUN DAY Campaign analysis of just-released data from the U.S. Energy Information Administration (EIA). A year earlier, renewables’ share was 17.5%, and if present trends continue, electrical generation by the mix of renewable energy sources could overtake nuclear power in 2020 and coal in 2021.

The latest issue of EIA’s “Electric Power Monthly” (with data through December 31, 2019) reveals that solar and wind both showed continued, strong growth, expanding faster than all other energy sources.

Solar, including small-scale solar photovoltaic (PV) systems, grew 14.9% compared to 2018 and accounted for almost 2.6% of total electrical output.

Small-scale solar (e.g., distributed rooftop systems) – which increased by 18.6% – provided nearly a third (32.7%) of total solar electrical generation. The growth rate of distributed solar was greater than that of any other energy source.

In addition, U.S. wind-generated electricity increased by 10.1%, accounting for 7.2% of all electricity produced.

Combined, wind and solar accounted for almost a tenth (9.8%) of U.S. electrical generation through the end of December. In addition, biomass provided a bit more than 1.4% and geothermal contributed almost 0.4% (with the latter reflecting 0.3% growth).

In total, non-hydro renewable sources (i.e., biomass, geothermal, solar, wind) accounted for 11.6% of total U.S. electrical production during 2019 and grew by 8.5% compared to 2018.

Notwithstanding a 6.4% decrease in hydropower’s output and a 5.6% drop in that of biomass, electrical generation by the mix of all renewables, including hydropower, was 2.6% higher than a year earlier.

By comparison, nuclear-generated electricity increased by just 0.3% while that from coal plummeted by 15.7%. However, much of the latter was replaced by natural gas which grew by 7.7%.

NOTE: The figures cited above include EIA’s “estimated small-scale solar photovoltaic” which totaled 35,041 thousand megawatt-hours for 2019. The latest issue of EIA’s “Electric Power Monthly” was officially released late on February 26, 2020. For the data cited in this news update, check here and here.

-- Solar Builder magazine


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Portuguese fossil fuel giant creates renewables unit

Galp Energia aims to develop a sustainable power project portfolio based on solar and wind. It will devote up to 15% of its total investments to its renewable energy plans.

From pv magazine Spain

Last week, Portuguese gas and oil producer Galp Energía held a meeting to present its new strategy and its 2019 financial results.

The company’s net profit fell 21% in 2019, which prompted it to launch an internal reorganization effort, with a new customer-centered approach and a new division dedicated to renewable energy.

“Galp is committed to developing a sustainable portfolio based on the generation of electricity from renewable sources, with an investment of between 10% and 15% of the group destined to this energy source and with the objective of capturing new business opportunities,” the company said. “These investments represent a natural coverage for the Iberian activities, in line with the trend of global electrification.”

Galp recently acquired a 2.9 GW portfolio of solar energy projects in Spain from Spanish construction group ACS, with a secured network connection and 914 MW already in operation. These projects, together with others that are under development on the Iberian Peninsula, will provide 3.3 GW of capacity by 2023. The company claims that the capital returns of the portfolio will be greater than 10%.

Although its installed capacity in the coming years will be based on its existing portfolio, Galp’s ambition is to expand its renewable footprint to 10 GW by 2030, with a particular focus on the Iberian Peninsula.


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Connecticut solar installers are in legal fight over property tax exemption language

Connecticut Superior Court

Connecticut Superior Court

This article was originally published on Energy News Network.

Court cases dispute the definition of “private residential use” for exempting solar installations from property taxes.

At least 15 municipalities in Connecticut are locked in court battles with solar companies who say they are wrongfully taxing residential solar installations. Since 2017, nearly 200 lawsuits involving hundreds of properties around the state have been filed in the state Superior Court. At the root of the challenges is a state statute granting a property tax exemption to renewable energy sources that generate electricity for “private residential use.”

A few years ago, some municipal tax assessors began interpreting that wording to mean that solar panels that are owned outright by the homeowner and/or produce power solely for the property are exempt, while those that feed power onto the grid or are owned by a third party are not. So they began assessing property taxes on systems in which the homeowner relied on leases or power purchase agreements. In some cases, installations were assessed after having previously been exempted.

“The problem is the statute is very gray and people have different interpretations,” said Shawna Baron, assessor for the town of Cromwell and president of the Connecticut Association of Assessing Officers. “It’s our job as assessors to follow the law and implement it the best we can.”

Cromwell is among the towns being challenged in court. Solar companies argue that systems with leasing or power purchase agreements should be exempt under the law.

Municipalities have a lot at stake

The solar companies are seeking a refund of the taxes they’ve paid out in the past few years. In Cromwell, that adds up to more than $200,000 in revenue so far, Baron said.

Attempts to reach a legislative fix have so far failed. Last year, lawyers for the municipalities proposed legislative language to counsel for the solar companies that would have expressly exempted all residential panels moving forward, while at the same time allowing towns to keep the revenues they’d already collected, according to Donna Hamzy, advocacy manager for the Connecticut Conference of Municipalities, an organization representing all 169 communities in the state.

“They discussed it as the most uniform and equitable way of moving forward,” she said. “It would also eliminate the need for litigation.”

But the municipalities were caught off guard, she said, when a bill suddenly “popped up” that clarified the scope of the exemption but omitted any language holding towns harmless for the previous assessments. It passed the House, but stalled in the Senate.

“Now here we are having had a year pass without any effective legislation to negate the need for continued litigation, which would have saved the towns additional legal fees,” Hamzy said.

February is Operations & Maintenance Month here at Solar Builder. Check out all of our O&M news and insights this month right here.

Similar legislation is back this year.

The sponsor, Rep. Joseph P. Gresko, D-Stratford, said he hopes lawmakers are able to put the matter to rest this session. His town is also a party to the lawsuits, with solar companies seeking to recoup hundreds of thousands of dollars.

“Ideally, I would love to stop this from happening in the future,” said Gresko, who works as sustainability coordinator for the city of Bridgeport. “We could say to the solar companies, ‘We closed the door going forward, but you’re not getting your money back from the towns.’ This is where the compromise would have to come in.”

That’s exactly what counsel for several of the towns asked for at a public hearing on the legislation last week. Attorneys Benjamin Proto and Kari Olson submitted testimony seeking an amendment that would validate the collection of taxes on commercially owned residential solar systems through the October 2019 grand list.

“With the difficult fiscal situations that municipalities presently find themselves in, as well as the substantial cost to continue litigating these tax appeals for both the municipalities and the solar companies, this amendment is the most appropriate and cost-effective compromise,” they said.

The lawsuits were consolidated late last year and are scheduled to move forward with discovery this year in Superior Court in Waterbury.

Other towns named in the suits include Fairfield, East Hampton, Wethersfield, Bloomfield, Norwich, Rocky Hill, Killingly, Groton, Ansonia, Somers, Greenwich, Naugatuck and Griswold.

In testimony submitted in support of this year’s bill, the Connecticut Green Bank’s legislative liaison, Matt Macunas, argued that assessors were “improperly” denying exemptions to systems with a lease or power purchase agreement. Such arrangements make up the bulk of the solar market in Connecticut, and have been critical to fueling adoption, he said.

Taxing the systems “at this critical stage will render previously constructed projects to no longer be viable and cause many future projects to become uneconomic in paying back a consumer’s investment,” Macunas said in his testimony.

Stephen Lassiter, manager of public policy for the solar giant Sunrun, which has filed about a dozen lawsuits challenging assessments, submitted a repeat of his testimony from last year, in which he argued that the assessors’ interpretation would have a disparate impact on lower-income households.

Those residents who are leasing systems wind up paying the tax as a pass-through cost from the solar company, while “those with the wherewithal to purchase a system outright will be granted a tax exemption,” he said.

Lisa Prevost is a longtime journalist based in Connecticut. She writes regularly about housing, development and business for the New York Times. Her work has also appeared in the Boston Globe, CNBC.com, Next City and many other publications. She is the author of “Snob Zones: Fear, Prejudice and Real Estate.” A native New Englander, Lisa covers Connecticut and Rhode Island.

-- Solar Builder magazine


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