Photograph via snooOG

The Solar Power Reddit

The Solar Power Reddit

Solar Power - the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV), indirectly using concentrated solar power, or a combination. Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaic cells convert light into an electric current using the photovoltaic effect.

Photovoltaics were initially solely used as a source of electricity for small and medium-sized applications, from the calculator powered by a single solar cell to remote homes powered by an off-grid rooftop PV system. Commercial concentrated solar power plants were first developed in the 1980s. The 392 MW Ivanpah installation is the largest concentrating solar power plant in the world, located in the Mojave Desert of California.

As the cost of solar electricity has fallen, the number of grid-connected solar PV systems has grown into the millions and utility-scale solar power stations with hundreds of megawatts are being built. Solar PV is rapidly becoming an inexpensive, low-carbon technology to harness renewable energy from the Sun. The current largest photovoltaic power station in the world is the 850 MW Longyangxia Dam Solar Park, in Qinghai, China.

The International Energy Agency projected in 2014 that under its "high renewables" scenario, by 2050, solar photovoltaics and concentrated solar power would contribute about 16 and 11 percent, respectively, of the worldwide electricity consumption, and solar would be the world's largest source of electricity. Most solar installations would be in China and India. Currently, as of 2016, solar power provides just 1% of total worldwide electricity production but growing 33% per annum.

Wiikipedia: solar power

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Two new 80 MW peak power solar farms nearing completion in northern Utah. Locations proximate to two high power consumers, Nucor (steel) and Northrup Grumman (aerospace)

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solar powered phone charger


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Looking into solar power in Southern MN

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ROI calculator for solar power installation on apartment complex

Solar power installation in apartment complexes - what are the considerations? Does it makes sense to dip in society corpus? How much power can be generated.
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Spruce Power finally resolved an old SPAC lawsuit

As you may remember Spruce Power (XL Fleet back then) went public through a merger with SPAC. On December 21, 2020, the merger was completed.

Shortly after, Muddy Waters Research released a report stating that the information in the Proxy was not accurate. This led to the stock price huge drop and moreover, XL Fleet revealed that it was being investigated by the SEC.

After that, there was a big scandal and investors filed a lawsuit against them. And just recently Spruce Power agreed to pay a $19.5M settlement to the shareholders to end the litigation. So, if you have been trading XL/PIC you can file for the payment here or through the settlement administrator. Hope it'll help!

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Solar Power dataset

Hi everyone,

I am a part of a team that has created a dataset with solar power installations that can be updated quite regularly. It can detect all solar power plants above a certain threshold, and can be ran whenever there are new cloud-free satellite images available.
We have mapped out some use-cases for the dataset, but I would love to hear if you have any other takes, the current use cases we have mapped out are:

  • Short-term solar PV forecasting:  Predicting near-future solar energy output for optimizing grid integration and power dispatch.
  • Policymaking: Informing decision-making processes related to energy policy, renewable energy targets, and the allocation of subsidies and incentives.
  • Land use planning: Identifying suitable areas for solar development, while considering land availability, environmental impact, and proximity to the grid.
  • Market intelligence: Providing market analysis for energy developers, investors, and service providers to gain insights into solar market trends and competition.

What do you think, any other use cases that we could investigate?

I highly appreciate any feedback

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DNI confusion in PVLIB

Hey everyone, I've been working with the PVLIB Python library, and I've run into a bit of a snag regarding the run_model function. It requires irradiance inputs like GHI (Global Horizontal Irradiance), DNI (Direct Normal Irradiance), and DHI (Diffuse Horizontal Irradiance). However, I've noticed that some sources provide DNI values with the cosine of the zenith angle included as part of the DNI, while others don't. This discrepancy is causing quite a difference in the outputs when I use these different variants of DNI as inputs for the run_model function. So, I'm wondering: which input format should I use? Should it be the DNI with the cosine of the zenith angle (DNI * cos(zenith angle)) included, or just the plain DNI value? I want to ensure I'm using the correct input format to get accurate results from the run_model function. Any insights or advice on this would be greatly appreciated! Thanks in advance!

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Having problems with Morningstar solar controller

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Bought 2500 230 watt panels for cheap. What should I do with them?

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Home solar power - how cool can the house stay at night in warm climate?

Our household got a 12.8kWp setup, with batteries, near the end of the year. We're in northeast Texas, so running our HVAC during hot summer days on sun power is something we're very much looking forward to.

We gave the solar installers a full two years of electric bills to calculate from, and the system they put in is supposed to give us 105% of our average power consumption per year. We are also in an unconventional, very well insulated house, a thin shell concrete dome.

Our current plan is that when the summer gets hot, we'll turn off the cooling on the HVAC at dark and just circulate already cooled air with ceiling fans and such until dawn. Has anyone tried this method for maximizing the use of solar energy vs grid energy in a hot climate? How has it worked out? Any other tips we should definitely incorporate into our power use?

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Southern California Help

Hey guys. I'm looking to do a ground install on my property. I was wondering if anyone knew of a electrician or a company that would install panels I buy. I found a site where I can buy California Approved systems. I just need an electrician to connect everything.

Any help would be great! Thanks!!!

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What does this mean? My Dad got solar we have no clue what it does

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Explore a Solar Power Plant in Virtual Reality | VR in Power Industry

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Total beginner Question about 12v lead acid deep cycle batteries.

If max capacity is 12.6v, then how is 80% discharge only 11.5v? Wouldn’t 80% be 10.08? I’m confused as to where the 80% number comes from. 80% of what? Also, if that’s the max recommended discharge then how are you supposed to power anything? I don’t understand how that’s going to give power without immediately needing to recharge. Doesn’t that defeat the purpose of deep cycle?

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solar generator brands?

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Tennessee Valley Authority contracts to buy 600 megawatts of solar power and 20 megawatts of battery storage in early steps toward building or buying 10,000 megawatts solar power by 2035.

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Problem with BMS and LifePo4

Hello everyone! It's a pleasure to meet you all. I'm currently facing a challenge with my campervan's battery system. Originally, I had two batteries, each with a capacity of 225 Ah. However, they've degraded to the point where they now only hold 30 Ah, necessitating a replacement. I'm considering switching to LiFePO4 batteries, as they seem to be the best option for my needs. I require large-capacity batteries because I'm preparing for a trip to Norway, where I plan to work remotely from my campervan, using equipment like Starlink. My daily energy consumption is around 200W/h (230V) for 8 hours. Regarding my current setup, I have four 4SUN MAXX 170W solar panels. I've upgraded my standard regulator to a Victron MPPT 100/50, and I also have a 1000W electric power generator for emergency situations. Here's my primary concern and question:

  • I'm planning to purchase a DIY LiFePO4 battery setup, possibly with 4 or 8 units of the 3.2 V EVE 280AH LiFePO4.

However, I'm unsure about the additional components needed for this setup. From what I've researched, it seems I'll need a BMS and a new charger (possibly a 50A one for fast charging from my generator). I also need to replace my inverter to convert 12V to 230V, as my current "VOLT" inverter isn't compatible with LiFePO4 batteries. A 1000W inverter should suffice for my needs. I'm uncertain about which specific products to purchase and how to determine the appropriate power (and model also..) for the BMS. Do you have any experience with setups like this, or could you recommend any reliable articles or videos on the topic? Thank you in advance for your understanding and any help or additional information you can provide!

Which accessories need to buy to improve power in my motorhome with lifepo4 :D

#camper #rv #diy #campervan #battery

01:33 UTC

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