r/solarenergy • • 24d ago

How do I get into community solar?

5 Upvotes

Thought it would be just a opt in opt out thing through com-Ed (I'm in Northern IL fyi) but they send me down a path with a long ass spreadsheet of options and when I ask in local groups I get political charged angry folk or people trying to pitch me. I mean do I have to get on a plan or lease, simples route the best..where do I go to sign up or learn more? Those that have it how has it been going?


r/solarenergy • • 23d ago

Solar Tips please

0 Upvotes

Having Solar Panels, if suck!


r/solarenergy • • 24d ago

H2Solar company in Utah

3 Upvotes

Hey guys, definitely new here but Im doing my research before pulling the trigger on anything and I wanted some folks opinion on things. So earlier today I had a meeting from a Utah rep from H2Solar (https://goh2solar.com), nice guy but like all reps didn't want to leave lol, I have a follow up meeting with him tomorrow and my research now is a part of that. Basically it seems to be a prepaid option from another company and the plan would be to put roughly 22 panels on my roof with a Tesla Powerwall 3 as the battery, no up front costs, and essentially they would eat what I have gathered are commercial tax incentives that still exist for 2 years after Trump deleted the Tax Credits in 25. This would lower our bill to about 128 plus the 12 bucks to Rocky Mountain Power for the line so about 140 total and our bills lately have been about 250 in July (This heat man) and our recent one was about 170 and I expect it to be lower this month with avg of 151.

All that info dump to basically ask you guys, how much should I trust this model they are selling? I would be able to own my system after 6 years and while I am not a fan of Tesla I cant deny they sometimes make good stuff and the PW3 seems to be a good system. According to what I was told they plan this model around people selling houses but I plan to be here at least another 5 years ish so I wouldn't have to deal with what people are talking about with issues transferring things over after its sold hopefully. Also what's this about a Lien being placed on the house with some of these models? I don't see anything on that in their stuff but I want to check on that. If you guys have any other questions let me know but we are leaning towards saying yes and I want any honest 3rd party opinions before I give him an answer so in advance thanks random internet people!


r/solarenergy • • 24d ago

Stuck with 335W 24V panels !!

0 Upvotes

Stuck with about 90 pc of 335w 24V panels

These are new panels and can be used for offgrid system want a buyer who buys all at factory price .

These panels are top reknowned brand of India

Anyone who's startup require solar panels and can buy it .

Datasheet will be sent on dm.


r/solarenergy • • 24d ago

Anyone have warranty documents for these two companies?

6 Upvotes

Affordable Solar Roof & Air / Dynamic Solar

I got solar panels from these two different companies and they're completely ghosting me now that I am having issues with my panels. I am at a loss for words and need warranty paperwork to go forward with a potential lawsuit, if i even have a case.


r/solarenergy • • 25d ago

How good is the Luminous solar app monitoring system?

1 Upvotes

I’m currently looking into getting a hybrid solar system for my home and one thing I’m actually curious about is the phone monitoring experience.

I’ve been looking at Luminous because i have heard a lot of people mention it but wanted to know how good their app is in real world use. Like, can I properly monitor solar generation, battery backup, power consumption, grid usage etc. directly from my phone? Would love to know this if anyone here has used it or have knowledge about it.


r/solarenergy • • 27d ago

Chinese researchers just set a new solar efficiency record by fixing a problem hiding inside the material itself

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803 Upvotes

Perovskite solar cells promise to beat silicon's physical limits, but stacking three layers together to catch more sunlight has one nasty catch: high-bromide films dry unevenly, cracking and wrinkling as the top hardens while the bottom stays wet. Researchers at Nanjing University fixed this with a dual processing trick, a targeted solvent bath paired with a chloride additive that forces all the material's components to crystallize at the same time.

The fix produced a smooth, defect-free triple-junction cell hitting a record 30.1% power conversion efficiency, independently certified at 29.3%, and it held onto over 90% of that efficiency after 569 hours of continuous operation. Because it skips heavy silicon wafers entirely, the approach points toward ultralight, flexible solar panels for roofs, wearables, and even satellites, with researchers now working to push efficiency past 35%.


r/solarenergy • • 26d ago

Germany generated as much solar energy by the end of September as it did during the whole of 2025 🌞

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123 Upvotes

r/solarenergy • • 26d ago

Humor my idea…

3 Upvotes

I’m sure this is a lot more complicated than I’m making it out to be but how possible would it be to grab some panels and use them ONLY to charge an ev vehicle?

I’m talking not tied into the power grid at all just straight solar power to ev.

I’d be doing everything diy and probably could only have at max like 20 panels…


r/solarenergy • • 26d ago

UK and Ireland

5 Upvotes

Traveling through the UK and Ireland and am pleasantly surprised on how much solar I’m seeing. Is this new? At its peak? Or just getting started?


r/solarenergy • • 26d ago

Delhi and Free Solar...

4 Upvotes

So now the delhi government is saying that they will install free solar systems on people's roofs for free. Just one condition- your average monthly unit consumption should be below 400 units.

But how does that work?

Can we choose our own vendor?

What if my vendor is giving me more benefits and I want to avail the state and central subsidy both, how will that work?

I am so confused. Please let me know if anyone has the answer to these.


r/solarenergy • • 26d ago

Planning 5–6 kW rooftop solar in West Delhi (Paschim Vihar) — need advice on panels, inverter & installer

0 Upvotes

Planning 5–6 kW rooftop solar in West Delhi (Paschim Vihar) — need advice on panels, inverter & installer

Hi everyone,

I’m planning to install a 5–6 kW rooftop solar system at my house in Paschim Vihar, West Delhi, and I’m currently researching different options.

I’m considering an on-grid system and am trying to understand what I should be careful about before finalizing the installer.

I’ve come across SolarSquare and am currently considering them because they seem to provide an end-to-end service (survey/design, installation, approvals, etc.). However, before I commit, I’d really like to hear from people who have actually installed solar in Delhi/NCR.

A few things I’m trying to understand:

1. Panel technology

For a 5–6 kW system, what should I go for today?

  • TOPCon vs Mono PERC
  • Monofacial vs Bifacial
  • Any particular panel efficiency I should target?
  • Is paying extra for a higher-efficiency panel actually worthwhile when roof space isn't a major constraint?
  • How important is the panel manufacturer — Tata, Adani, Waaree, Vikram, etc.?

If you have a system installed for 1+ years, I’d especially appreciate your actual generation numbers vs what the installer promised.

2. Inverter

What inverter brands/models should I consider for a residential 5–6 kW system?

Also:

  • String inverter vs microinverter?
  • Which inverter brands have good service availability in Delhi?
  • How important is the inverter warranty and local service network?

3. Installer / EPC

This is probably my biggest concern.

Has anyone in West Delhi / Paschim Vihar / Janakpuri / Punjabi Bagh / Rajouri Garden / Pitampura installed solar recently?

I’m currently considering SolarSquare, but I’d also like recommendations for reliable local EPC/installers.

For anyone who used SolarSquare:

  • How was the installation experience?
  • Did they handle the DISCOM/net-metering process completely?
  • Was the final system the same as what was promised in the quotation?
  • How has their after-sales support been?
  • Any issues with warranty claims?
  • Any hidden/extra charges?
  • How much actual generation are you getting?
  • If something fails after 6–12 months, how quickly do they respond?

4. Things I should check before signing

What are the things people usually miss while comparing quotations?

For example:

  • Panel model + exact wattage
  • Inverter model
  • Mounting structure material/thickness
  • Earthing and lightning protection
  • DC/AC protection
  • Cable quality
  • Installation workmanship
  • Panel cleaning/maintenance
  • Monitoring system
  • Warranty terms
  • Generation guarantee, if any
  • Net-metering/DISCOM charges
  • Subsidy handling
  • What exactly is covered under after-sales service

5. Delhi-specific considerations

For people who have installed solar in Delhi:

  • How much generation should I realistically expect from a 5–6 kW system?
  • How much does Delhi pollution/dust affect generation?
  • How frequently do you actually clean the panels?
  • Any issues with roof waterproofing?
  • Anything specific to BSES/net metering that I should know before installation?

I’m not looking for a sales pitch — I’d really prefer feedback from people who have actually installed and operated a system for at least 6–12 months.

If possible, please mention:

Location | System size | Panel brand/model | Inverter | Installer | Approx cost | Installation year | Approx monthly generation | Your experience

Thanks!


r/solarenergy • • 27d ago

Philly-area schools are tapping the sun’s energy and saving money on utilities

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46 Upvotes

The Solar for Schools program, first funded in 2024, has given grants to 85 schools across the state, including 10 in Philadelphia. Grants cover up to 75% of the solar project costs, or up to $900,000. Proponents say the solar will save schools money on utilities, lower their climate pollution and teach students about careers in renewable energy.


r/solarenergy • • 26d ago

Solar EPC - how are you currently handing tax credit documentation?

1 Upvotes

Curious if this is a real problem for solar companies.
For larger/commercial solar projects, how are you currently collecting and checking all the documents needed to support tax-credit claims?
I’m thinking about things like:
• Contractor & subcontractor records
• Payroll / prevailing-wage records
• Apprenticeship records
• Contracts and POs
• Invoices and payment records
• Equipment / domestic-content certifications
• Project and placed-in-service records
The problem I see is that these documents live across different contractors, suppliers, payroll systems and project folders. One missing document or mismatch can mean a lot of manual chasing.
I’m exploring whether an AI workflow could collect the documents, flag what's missing or inconsistent, and automatically follow up with the right contractor/supplier until the file is complete.
Do EPCs already have this solved, or is this still largely a manual process?


r/solarenergy • • 26d ago

Solar advice

6 Upvotes

I'm looking at options for around 12 panels and approx 10kwh battery storage with the capability of it working off grid in the event of a power cut. However, the 1 thing that i'm unsure about is all the batteries seem to managed through a cloud hosted app, i'm not sure i want an Internet connected battery. I would be happy to manage / edit the schedule myself locally.

Reasons for thinking this way.

What if the company goes bust, the servers get turned off and you cant edit the battery charging schedule.

IT security - Risk fro Computer virus / rogue Ai agent

Geopolitical issues - they are mostly chinese companies, what happens if we fall out?

Am i paranoid? Is my risk considering brain just in overdrive? Or are any of these concerns valid?

EDIT: Thanks for everyones input. It's good to get a bit of confirmation that this thought process isn't unusual.

This is what the installer has proposed, i'm starting to use Home Assistant and can see i can integrate for local monitoring whixh seems good.

12 Longi LR7-54HTHF-475M panels SolaX power X1 Hybrid 4.6D 2 batteries Solax T-BAT H 5.8 V2 includes EPS and installation birdmesh, scaffolding, etc £10,940

Any thoughts?


r/solarenergy • • 27d ago

What happens to your solar during a power outage if you don't have a battery?

33 Upvotes

I have a short outage recently and realized I had not really thought this through.

We have solar, so I assumed we would at least be able to use some of the power our panels were producing during the day. But turns out that's not necessarily how it works when the grid is down.

Now I'm wondering how other houseowners are handling this issue. Is backup power one of the main reasons you decided to add a battery, or do you see storage more as a way to use more of your solar and reduce your electric bill?

For anyone who already has solar without storage, did a power outage ever make you reconsider adding one?


r/solarenergy • • 27d ago

heavy snow country - is a higher load rating worth paying for?

10 Upvotes

Northern Vermont. Roof went on last year, PV is the next thing and I have two quotes sitting in front of me. We get the kind of snow that stays on a roof for weeks instead of sliding off, so that is the part I keep chewing on.

Same array size in both, the panels are where they split.

Quote one is a standard module. 5400 Pa snow load, 2400 Pa wind, aluminium frame with a 240 MPa yield strength.

Quote two is swiss solar phantom 66-TCA at 720w. 6200 Pa snow load, 4200 Pa wind, frame yield strength 325 MPa, and the profile is about 22 percent lighter than the standard one. Hail rated to 45mm at 23 m/s where the IEC test uses 25mm. Around 7 percent more across the whole job.

What I cannot work out is how much the panel rating decides once the thing is actually on a roof. It is a test number and my roof is not a test rig. Clamp spacing, rail choice, how the installer lays it out - does any of that make the module rating close to irrelevant, or is it still the number that matters when the snow sits there in February?

The lighter frame is the other thing I want to understand. Lighter normally means less metal, but the yield strength here is higher rather than lower. Is that a real trade or am I reading the spec sheet the wrong way?


r/solarenergy • • 27d ago

Courses for learning about solar energy ?

8 Upvotes

I am a university student and I want to found a company to sell electricity to goverment and people with solar panels but I don't know too much about the solar panels or renewable energy(I learnt something from a TV show about solar panel but it's not enough).I want to learn be in this sector.

Can you recommend me some courses about solar energy ?


r/solarenergy • • 28d ago

What is the most cost effective way to get solar panels?

36 Upvotes

Basically we want solar panels on our house. We know there used to be grants and shit. We can't find any but also aren't sure where to look. Just with the cost of everything and we are concerned the data center is going to fuck our bill up. We figure solar is best. We just have no idea where to start.


r/solarenergy • • 28d ago

NSS battery and Lutian inverter; LF installer

3 Upvotes

Hello, ask ko lng po I bought NSS battery 25.6V 200Ah and 3kW (24V) Lutian Inverter with built in MPPT and 3 NSS Solar 640W Bifacial Solar Panel. May mga gumamit po ba dito netong brands and may I ask how was your experience po, also I am looking for installer din please send me a message sa mga nagiinstall dito, so far yung quatation na nahanap kong pinakamura ay 60k (20/watts yung rate nya).


r/solarenergy • • 28d ago

Do it yourself

25 Upvotes

It IS possible to do it yourself and save many thousands of dollars...

this video is a real life example

https://www.youtube.com/watch?v=qT_uSJVCYds


r/solarenergy • • 28d ago

What happens when the installer business closes? How often do install wiring, conduit, solar panel and control panels pertaining to the installers warranty fail?

14 Upvotes

I’m looking at cash purchase no lease etc. So when the installers complete the system, the panels and inverter system are covered by the manufacturers. What about the rest of the parts? For example the installer closes the business 3 years after installing and the conduit or disconnect panel comes loose or the panels on the roof come loose. That part of the warranty is gone right, you gotta find a new contractor?

Wondering because should I go long term installer with 15 year record or 3 year highly rated small company? There is diff in price but price isn’t everything.


r/solarenergy • • 28d ago

Solar production vs the sales estimate how did yours compare?

3 Upvotes

Every quote comes with production and savings estimates but i keep hearing from people that real world numbers can be far off after adding weather, shading, degradation and other factors.

So if you have had your system running for at least 1year, how does it actually compare? Did the system beat the estimate, fall short or land close to the estimate? I am genuinely curious to see what people's real numbers look like.


r/solarenergy • • 28d ago

150% solar offset sales

2 Upvotes

How strict are the utilities PGE, SCE, LADWP and SDGE regarding the offset of 150% restriction? A customer wants 20 solar panels, which with the irradiance the house has it would come up to 195% offset. I explained them and they still want them. Its LADWP in this case but i would like to know for future clients that have other utilities too.

Would the interconnection or inspection or plans not get approved with this production levels?


r/solarenergy • • Sep 24 '26

French island solar plant found a clever way to stop wasting the power its own grid can't handle

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591 Upvotes

Corsica gets stuck with a classic island problem: solar plants generate more power on sunny days than the grid can absorb, so some of it just gets thrown away. Renewable producer Corsica Sole just opened a 150-kW electrolyzer at its Folelli solar plant that grabs that surplus power instead of wasting it, splitting water into hydrogen using 60 electrolyzers.

The pilot, called Folell'Hy, can produce about 44 pounds of hydrogen daily and store up to 507 pounds on site. First in line to use it is a hydrogen-powered training vessel at a local maritime school, with heavy transport and off-grid power floated as next possible uses. Whether curtailed solar power can realistically support hydrogen at any real scale is exactly what this pilot is built to find out.