Residential solar power systems

China’s PV Industry Is Facing Downward Pricing Pressure As of the end of February 2018, China was home to 24 polysilicon makers — including those that had shut down production lines in order to undertake regular maintenance — with an effective production capacity totaling 293,000 metric tons a year. https://ift.tt/2JnAROJ

Dealing with quality control issues during hydropower asset replacements There is concern in the hydroelectric industry about quality control issues when it comes to hydropower asset replacements and repairs.  https://ift.tt/2xrXTiE

Understanding Disruptions and the Unintended Consequences of Solar, Wind and Energy Storage Distributed Energy Resources in Microgrids Distribution grid operators are concerned that high penetration of connected distributed energy resources (DERs) could lead to grid instability and create outages at end-user sites, such as commercial buildings or industrial plants. “Today, we don’t fully understand grid behavior under varying DER conditions." https://ift.tt/2xqRq7l

Feedback wanted: how can I improve the weatherUnderground filter I made to predict solar production from the 10 day forecast? submitted by /u/montypython85 [visit reddit] [comments] https://ift.tt/2L6R47Z

Petrol price cut by 7 paise, diesel by 5 paise per litre In Delhi, petrol will now cost Rs 78.35 a litre, down from Rs 78.42, and diesel will cost Rs 69.25 per litre than previous price of Rs 69.30. https://ift.tt/2J5h3vQ

How would box material and window material for a solar oven effect on the oven's maximum temperature? submitted by /u/supahaesthetic [visit reddit] [comments] https://ift.tt/2JeUIiX

Tesla’s solar rooftop installations continue two-year decline submitted by /u/000111011 [visit reddit] [comments] https://ift.tt/2jpDrEU

Hanwha Q Cells opening 1.6 GW+ solar module assembly facility in Georgia submitted by /u/infocsg [visit reddit] [comments] https://ift.tt/2srnceG

Clean Energy Groups Appeal Approval of DTE Energy’s Proposed $1 Billion Gas Plant A coalition of clean energy organizations have asked the Michigan Court of Appeals to reverse the decision of the Michigan Public Service Commission to approve a massive new natural gas power plant to be built by DTE Energy. https://ift.tt/2H0TW3H

UK Energy Industry Launches Coalition on Gender Diversity A new initiative has been launched to boost the number of women at senior levels and middle management in the UK energy industry. The Energy Leaders’ Coalition comprises eight of the leading chief executives from the UK’s energy sector – of which only two are women – who are making a public declaration to improve gender diversity in their companies and in the sector as a whole. https://ift.tt/2IXcJ5Z

As More Solar and Wind Come onto the Grid, Prices Go Down But New Questions Come Up Wind and solar energy are growing rapidly in the U.S. As these energy sources become a bigger part of the electricity mix, their growth raises new questions: How do solar and wind influence energy prices?  https://ift.tt/2LJWAyl

Loans Worth $40 Million Will Spur First Utility-Scale Solar for Indonesia New private financing from the Asian Development Bank will support the development of Indonesia’s first utility-scale solar PV plants. https://ift.tt/2H2gDEU

Kerala to cut taxes on petrol, diesel to reduce retail prices Kerala Finance Minister Thomas Issac said his government will calibrate tax rates in such a manner that retail fuel prices will be reduced by 1 rupee/litre from June 1. https://ift.tt/2LIjc2y

Hanwha Q CELLS to Build Solar PV Manufacturing Facility in US South Korea-based Hanwha Q CELLS Korea Corp. today said it will begin building a solar module manufacturing facility in the U.S. this year. https://ift.tt/2sk1BFK

Short-lived relief! IOC cites clerical error, says fuel prices cut by 1 paise, not 59 Indian Oil Corp, the country's top refiner and fuel retailer, this morning announced reduction in petrol price by 60 paise but later revised it to just 1 paise. https://ift.tt/2IXiUD2

Don't vent your anger on Modi for fuel, your CM is responsible too States can cut petrol price by Rs 2.65 per litre and diesel by Rs 2 a litre if they decide to forgo potential additional gains out of high crude oil rates. https://ift.tt/2LIdWM1

How difficult is it to install a new roof under a solar array? I always hear that you don’t want to install solar on an old roof because the panels will outlive the roof. Is it super expensive to remove panels, install a roof, and re-install the panels? How much of a difference will it make to the new roof price? submitted by /u/ch00f [visit reddit] [comments] https://ift.tt/2spZkYT

States owe generation companies Rs 32,024 crore till Feb 2018: Govt portal According to Praapti and mobile application launched by Power Minister R K Singh today, total cumulative outstanding of power generation companies from all states was Rs 32,024 crore in February 2018. https://ift.tt/2xrysxC

Power minister launches app for transparency in due to gencos from discoms "This app will go a long way in addressing it. Prompt payments will make generators healthier," the minister said, adding this will also enable the banks to recover dues in time. https://ift.tt/2LF1qNv

Mahanadi Coalfields eyes NTPC’s Odisha plant The plant is scheduled to come up at Sundergarh in Odisha where Indian railways have laid a 53 km track to transport coal. https://ift.tt/2GYpo2P

Fluence Collaborates on Utility-Scale Energy Storage Roll Out in Asia Fluence — the energy storage joint venture of Siemens and AES — has agreed to collaborate on new utility-scale energy storage development and investment opportunities in Asia Pacific markets. https://ift.tt/2xnI3p9

Asia Offshore Wind Boom Lures Japanese Trading Houses Untapped offshore wind is luring Japan’s biggest commodity houses to invest in projects in Taiwan and at home, buoyed by favorable government policies that support development of the clean power. https://ift.tt/2sgexN8

Gas Trading Hub to be functional before December: PNGRB The Hub will work in the lines of Power Exchange which determines the price based on supply and demand and market forces. https://ift.tt/2L3Xl4l

Fuel prices up for 16th straight day; petrol costs Rs 78.43/litre in Delhi The cost of diesel per litre has also been increased to Rs 69.31 per litre in Delhi and Rs 73.79 a litre in Mumbai. https://ift.tt/2kwffkR

Building your own utility-style horizontal axis tracker: Has anyone done this? Or who can I buy one from? As I'm working on home solar plans for next year, I'm recognizing that I'm going to need a ground mount system, because for a combination of reasons (setbacks, shading, load ratings, angle, and smallish roof to start with), mounting on my roof isn't likely to work. If I do mount stuff up there, I'll still need to supplement with ground mount, and, well, the effort difference between "doing some ground mount" and "doing all ground mount" isn't that high. I live on a nice south facing hill, and an area to install the panels on isn't a big deal. But, since I'd like my power production to match use somewhat better (in expectation of changes to the net metering agreement my utility company is working on), which implies morning and evening production instead of middle-of-day production. And that, by my thinking, is best served by putt

Solar in NV with upcoming Question 3? I'm going to get bids on solar systems this week. However NV is going to do its 2nd vote to amend the state constitution to deregulated it's power market. Is going solar a bad or good idea if this passes or not? If it passes, what might that mean? submitted by /u/torpid_tapir [visit reddit] [comments] https://ift.tt/2LF3Uvp

New Next-Gen Manufacturing Report Shows How Solar Jobs Can Grow, Even Without The Sun submitted by /u/1000_Louisiana_77002 [visit reddit] [comments] https://ift.tt/2sfAJH8

Implications of California Mandating Solar on New Homes by 2020 submitted by /u/AlohaWitches [visit reddit] [comments] https://ift.tt/2xpkxrG

State oil companies' capex jumps 22 per cent in FY18 India’s oil demand expanded 5.3% in 2017-18, after rising 5.4% in 2016-17 and 11.6% in 2015-16. Growth in production of refined products lagged demand expansion in all three years. https://ift.tt/2LCbQNW

States can cut petrol price by Rs 2.65/litre by giving up additional gains: Report It further said that states earn an additional revenue of Rs 2,675 crore over and above the budget estimates for every USD 1/barrel increase in oil prices. https://ift.tt/2xkQDoD

Grid connected clean energy capacity reaches 70 GW in April The nation also witnessed 674.81 MW of Biomass (non-bagasse) Cogeneration)/Captive Power and 138.30 Waste to Power till April 30. https://ift.tt/2Jdnd0h

India says no plans for oil trade with Venezuela using 'petro' cryptocurrency Foreign Minister Sushma Swaraj cited an order by the country's central bank saying it did not allow trade using cryptocurrency. https://ift.tt/2IU0YJz

Government looks to stick it out as global crude oil prices lose steam Faced with a tough political call over high fuel prices, the Modi government is looking to stick it out, calculating the global rally in crude is likely to lose steam and this will ease the squeeze consumers are currently experiencing. https://ift.tt/2sjmJLI

Fuel prices surges for 15th day, touches Rs 78. 27 in Delhi The revised petrol prices in metropolitan cities are- Delhi: Rs 78.27 per litre; Mumbai: 86.08; Kolkata: 80.76 and Chennai: 81.11. https://ift.tt/2sepyhG

Petrol prices rise for 14th straight day; cross Rs 78 mark in Delhi According to the data from oil marketing major IndianOil, petrol price rose to Rs 78.12 in Delhi from Rs 77.97 a litre on Saturday. https://ift.tt/2KYacVx

Hydel power likely to get regulatory boost Hydel projects get project loan for 10-15 years, which is a major cause for high tariff in hydel power, resulting discoms reluctant to buy hydel power, power department officials had said earlier. https://ift.tt/2xieRj9

Tax department to sell Cairn Energy's attached shares at 'appropriate time' Cairn India was subsequently merged with its new parent Vedanta Ltd, in which Cairn Energy now holds about 4.95 per cent stake. https://ift.tt/2xfV4ky

Petronet to partner OVL for stake in Qatar Petroleum LNG project The stake would help Petronet, which is India's biggest LNG importer, better understand the business of converting natural gas extracted from under-sea fields are converted into a liquid at sub-zero temperature. https://ift.tt/2sgzLJL

Railways draws action plan to increase coal supply to power plants Delhi Power Minister Satyendar Jain had yesterday said that the coal stock at some power stations in the national capital region has dipped to an "alarming" level. https://ift.tt/2xfGvgL

When we get solar panels from utility company-connected service provider, do we ever use our own generated power? ConEdison (our local energy provider in USA) contacted me about solar energy options and connected me to a company that brokers deals and installation "Pick My Solar". From initial conversation I had a feeling that we never actually use the solar power we generate from the panels they install on our roofs (roughly $15k) instead, the power generated by the solars continuously feed the grid, and in the meantime we use the power from the grid, and if there is a balance (depending on which way) either we pay the add'l usage at per kWh or they credit us per kWh. Is this correct understanding of the system? I always thought we'd get some batteries so we can reserve our own power, and anything not used, or above the batteries, we can sell back to ConEdison. Could someone help me understand how the system works with panels? Thank you in advance. submitted b

What's the current state of bifacial modules? I'm looking into some ground mount designs for home solar, and one thing that's come up recently that I don't know that much about are bifacial modules. They seem to now be a thing that's in limited general availability, though solar installers talk them up a bit in my experience. A few specific questions: Will they produce identical power from the opposite sides, given identical illumination, or is there a very definite "front side" and "back side"? Has anyone experimented with a north-south facing "fin" of panels? It seems this would optimize power production far closer to actual use patterns, if one didn't have shading issues (which I wouldn't). Who actually sells them? I can find only a few vendors online. How are they rated? Are they rated under STC test conditions of illumination from a single side, such that they would often be producing far more than rated power? Th

PowerGrid to restore damaged transmission line by early next month PowerGrid has restored 54 transmission lines within 24 to 30 hours that had been damaged in the severe windstorms that hit several parts of India this month. https://ift.tt/2s64ryc

Government orders prioritised coal supply to PSU power plants; private companies may be hit Discrimination based on ownership of assets put into question the sanctity of commercial contracts signed by Coal India Ltd, said Association of Power Producers DG Ashok Khurana. https://ift.tt/2GOm9Lj

Trump Administration advances 500 MW solar project submitted by /u/Solar_Dork [visit reddit] [comments] https://ift.tt/2IH04nC

BP Invests in Tech to Charge Cars as Quickly as Filling Gas Tank BP Plc agreed to invest $20 million in a developer of ultra-fast charging for batteries, a technology the oil major believes is key for accelerating the adoption of electric vehicles. https://ift.tt/2J5C8K4

Now May Be the Best Time to Give Your Wind Turbine a Makeover Wind farm operators can earn an 11 percent rate of return for replacing turbine nacelles, hubs or rotors this year, and that’s even after a key federal tax break was reduced from last year, according to a report Wednesday from the consulting company ICF Inc. https://ift.tt/2JbQYhU

As Apple, Google and Others Promote Renewables, What Is the Best Way to Evaluate Corporate Energy Leadership? At 62 percent of U.S. retail electric sales, commercial and industrial electricity consumers can substantially influence the demand for renewable energy and accelerate the pace of electric sector decarbonization. https://ift.tt/2koZkEY

Siemens Gamesa Installs Pioneering Energy Storage System in Spain Wind turbine maker Siemens Gamesa has installed a redox flow energy storage system for testing at its La Plana research and development (R&D) site near Zaragoza in Spain.  https://ift.tt/2LsqiI8

List of Energy Efficiency Stocks Energy efficiency stocks are publicly traded companies using a wide range of technologies to deliver the same energy services using less energy in the built environment. This includes efficient lighting such as LED lighting stocks , insulation, efficient motors, efficient appliances and appliance replacement services, sensor and control technologies, the internet of things, efficient power conversion and generation, and energy efficient design, construction, and retrofits. See the list of efficient vehicle stocks and alternative transportation stocks for companies reducing energy used in transportation. Energy efficient fan from Big Ass Fans and a light shelf innovative strategies energy efficient design and construction firms use to lower energy use in commercial spaces. Acorn Energy Inc. (ACFN) Acuity Brands(NYSE:AYI) AIXTRON SE (AIXA.DE) Ameresco, Inc. (AMRC) Appliance Recycling Centers of American (ARCI) Aspen Aerogels, Inc. (ASPN) Carmana

Petrol prices rise over Rs 3 per litre in 12 days In the national capital, petrol prices rose Rs 3.20 per litre during the period and was sold at Rs 77.83 per litre on Friday. https://ift.tt/2IKc2wF

Government orders prioritised coal SS to PSU power plants; private companies may be hit Discrimination based on ownership of assets put into question the sanctity of commercial contracts signed by Coal India Ltd, said Association of Power Producers DG Ashok Khurana. https://ift.tt/2kssbbA

Solar tree Hi, I'm a highschool student Canada and I'm trying to make a solar tree. Seems hard to do, so I thought you could help. I want it to be kind of like an art installation and be around the height of three cars (weird unit of measurement I know). Do you have any ideas or concerns about the tree before I start to plan? Things like where the power goes, cool things to add, and how to make it cheaper as in selling power. Thanks! submitted by /u/Mr_Hi_ [visit reddit] [comments] https://ift.tt/2s7o7Sr

Heavy capex plans leave ONGC with little heft to absorb oil price surge With heavy capex plans as well as a challenging gas field of GSPC, the company faces risk of a rating downgrade if it's forced to borrow more to subsidise motorists. https://ift.tt/2II94sK

Home Finance Options are Adapting to Meet California’s Solar Landscape As California continues to push aggressive policies for the advancement of solar deployment in the state, options for homebuyers to finance solar also are growing to meet their needs. https://ift.tt/2x9vhdG

States have capacity and must cut duty on petrol: NITI Aayog The rising crude prices in the international market prompted state-owned oil companies to raise domestic prices for 11th day in a row. Petrol costs Rs 77.47 a litre in Delhi and diesel Rs 68.53 a litre. https://ift.tt/2KQCT6K

Bringing petrol, diesel under GST will lower prices: Devendra Fadnavis Talks are going on with finance ministers of all states, Fadnavis said, adding that "other states have not given their consent yet." https://ift.tt/2s0rlHh

Petrol price over Rs 85 in Mumbai, crosses Rs 80 in Kolkata The price of the fuel is already at an all-time high in Mumbai along with Delhi and Chennai and is now creating new benchmarks daily. https://ift.tt/2kmxsBk

Windfall oil tax on ONGC in offing to soften fuel prices The tax, which may come in form of a cess, will kick in the moment oil prices cross USD 70 per barrel, sources privy to the development said. https://ift.tt/2GKVS0k

Grasping at straws: Pathetic state of biofuels in India The biofuels story so far in India has been pretty underwhelming, despite commendable efforts initiated by the government over the last decade and a half. https://ift.tt/2kjw16E

Soaring crude may not lead to big investments: L&T Hydrocarbon MD Subramanian Sarma Oil prices have inched up, so that is looking good. But to convert this sentiment into something more definitive in terms of projects will take time, said Sarma. https://ift.tt/2IIzjek

RIL, Shell, ONGC told to pay $3.8 billion as government’s share of PMT The govt said profit should be calculated after adding the marketing margins of the cos and that only the actual taxes paid could be counted as costs. https://ift.tt/2s4BlPM

Planning for post-net-metering: How do you design? For the sake of this post, assume as a given that, at some point, the current net-metering arrangements ("I give you a kWh when I find convenient, you give me a kWh when I find convenient") are likely to change over the next decades. I'm not sure exactly how they are going to change, and it's likely to differ somewhat, but let's assume that they're going to change. How do you design a system for that, if you're aiming for a 30-50 year lifespan (yes, I know by 50 years, production will be down, and I'll probably just add another string to make it up)? My thoughts, currently, are that a moderately batteried DC coupled system (with generator) is probably the ideal. It allows you to ride through outages, it allows you to export to the grid when the battery is full, and if you're subject to altered rules, you can alter the system operation to deal with the new rate schedules. I think we'll likel

micro solar charger for 3.7 phone battery. Can I take a small solar panel that folds out and have it charge a standard 3.7 phone battery? Example: buy the Harbor Freight battery charger (12V DC 1.5 watt) https://www.harborfreight.com/15-watt-solar-battery-charger-68692.html You take it out of the package, cut it into sections so that it folds/unfolds. When your 3.7 battery is dead, you unfold and start charging. For some $13, you have a charger. It's output is 12V DC and your battery is 3.7V DC What if you break the panel in 1/2 or 1/3 so you get 4V DC. Note: I assume you can break these panels, I guess they are a solar film over plastic and connect in sections. So you cut this into 1/3 and for $13 you get 3 charging panels. Q. Will it work? Q. anyone know of a compact, foldable solar charger? submitted by /u/KarlJay001 [visit reddit] [comments] https://ift.tt/2J8Y8U6

Solar-powered hydrogen generator introduced in California submitted by /u/chopchopped [visit reddit] [comments] https://ift.tt/2GKsLdy

CERC norms for RE projects positive, need adequate transmission infra: ICRA The Central Electricity Regulatory Commission, on May 15, notified the procedure for grant of connectivity to RE-based projects proposing to use the inter-state transmission system. https://ift.tt/2LmSMms

India to take a 'long-term" view on fuel pricing: Law Minister Prices of diesel and petrol in India have surged to a record high. A liter of petrol costs 77.17 rupees ($1.13) while diesel is sold at 68.34 rupees/ liter in the national capital. https://ift.tt/2x6h5SH

Petrol almost Rs 85 a litre in Mumbai, crosses Rs 80 in Chennai Petrol prices in Mumbai, Delhi and Chennai have already reached unprecendent levels, and are now setting a new benchmark every other day. https://ift.tt/2xbdKSC

Government should review taxes on petrol, diesel: HPCL chairman One trigger after another has led to the 10th consecutive day of increase in retail selling price of petrol and diesel, but there is no case for going back on benchmarking domestic rates against international prices. https://ift.tt/2LmzrBS

HPCL, Mangalore Refinery merger in FY'19: CMD Mukesh Kumar Surana Oil and Natural Gas Corp (ONGC), India's biggest oil and gas producer, earlier this year completed the acquisition of HPCL for Rs 36,915 crore. https://ift.tt/2KO1jxW

Ease of power cuts clouds business climate in Maharashtra Industries in Pune-Chakan belt have informed the state govt about the problems they face while doing business during an interaction held early this month at Chakan. https://ift.tt/2IHcFqU

Why More Solar and Wind on the Grid Should Be Driving Today’s Investment Decisions A new LBNL report offers concrete suggestions about what investments today will be most beneficial in tomorrow’s renewable energy future. https://ift.tt/2KPCBwT

Report: Renewables, Energy Efficiency in New England Will Replace the Need for Gas Pipelines A report that examines statements about rolling blackouts made by regional grid operator ISO-New England, shows that sustained growth of renewables, and not more gas, will boost reliability of New England’s electric power system. https://ift.tt/2Lk7Tx3

CERC readying paper on tariff norms for 2019-24 A mechanism to address the recovery of additional capital expenditures by power companies on eco-friendly equipment needs to be worked out urgently, Pujari said. https://ift.tt/2GEAGJj

At Rs 6.20, power prices in a spot The extent of the hike in a consumer’s electricity bill will depend on state power regulator who decides on how much of hike in power purchase costs is to be passed on. https://ift.tt/2IDktK9

I need help understanding panel efficiency when not pointed directly as the sun. I recently finished the design of my tiny 12x16 solar home. I am ready to start working on the LiFePO4 battery bank. I will be using 6 (345 watts) [SunPower X-Series Residential Solar Panels]( https://us.sunpower.com/sites/sunpower/files/media-library/data-sheets/ds-x21-series-335-345-residential-solar-panels.pdf ). The roof is oriented (see image) to have an optimal tilt for the middle of each season (where spring and fall share a section). I am trying to figure out how much power the off season solar panels will produce. For example, if I assume that its mid summer, how do I calculate how much power the fall and winter angles produce compared to the solar that has perfect alignment? Is there a general consensus or is it specific to the panel? If it specific to the panel, what is that called in the datasheet, and what would be the algorithm to calculate it? I would really appreciate the help, I can

How do i determine optimal solar orientation for my specific location? Are there any resources available to determine optimal solar orientation for a new home? submitted by /u/Chroniseur [visit reddit] [comments] https://ift.tt/2KNvXr5

Big Battery Boom Hits Another Roadblock: Fire-Fearing Cities The new era of big batteries has already drawn scrutiny after fiery electric-car crashes across America and Europe. Now, U.S. city planners are worried about the same risk of hard-to-control blazes as these power-storage units make their way into basements and onto rooftops. https://ift.tt/2ICJxkH

Steps to deal with rising petrol, diesel prices likely this week The government may not rely only on cutting excise duty, which makes up for a fourth of the retail selling price, the official said but did not elaborate. https://ift.tt/2s36thD

Coal-starved captive producers push spot power price to Rs 11.41/unit Power sector has been witnessing coal shortage since last year, resulting in surge in spot prices to as high as Rs 10.80 per unit in September 2017. https://ift.tt/2IY7fah

Is Modi's bad luck with oil burning a hole in people's pockets? Yes, if you believe his own words Modi enjoyed the positives of low oil prices during the first three years of his tenure. But now he seems to have run into stormy weather. https://ift.tt/2IHUwW1

Petrol price highest ever in Chennai; up 30 paise across metros In Delhi and Mumbai, the fuel was sold at Rs 76.87 and Rs 84.70 per litre repectively, up from Rs Rs 76.57 and Rs 84.40 on Monday. https://ift.tt/2KMxY75

The Hemisphere's Biggest Solar Plant Is in Mexico, Not the U.S. submitted by /u/chopchopped [visit reddit] [comments] https://ift.tt/2HXpZTo

Solar records broken in UK again submitted by /u/2kfromthecity [visit reddit] [comments] https://ift.tt/2khLAMq

India poised to join China as global leaders in renewables: Report The world's largest solar project to-date at 2,225 megawatt (MW) is under construction at the Bhadla Industrial Solar Park in Rajasthan. https://ift.tt/2kdR6zr

ONGC, Oil India face risk of subsidy sharing: Moody's Moody's said the government could intervene to address record high prices of petrol and diesel by reducing the excise duty on these products, especially if oil prices stay high. https://ift.tt/2KJuodG

China, India lead global solar expansion as costs fall China added 53 gigawatts of the 98 gigawatts of new solar capacity built last year, a 31 percent increase from the total 2016, IEEFA said. https://ift.tt/2KJsI3S

Big energy companies keen on India play, seek stable rules: KPMG India has the benefit of being one of the few markets in the world which has rapidly growing demand projection https://ift.tt/2Lll7JR