/r/solar

Photograph via snooOG

Discussion of solar photovoltaic systems, modules, the solar energy business, solar power production, utility-scale, commercial rooftop, residential, off-grid systems and more.

Solar photovoltaic technology is one of the great developments of the modern age. Improvements to design and cost reductions continue to take place. How efficient will it become? When will it become so affordable that it's accessible to everyone? How are other energy industries having an effect on solar pv?

Welcome to the Solar Subreddit

Before submitting posts in this subreddit, read the current subreddit rules, suggestions, and helpful links post which is stickied to the top of the post list


This subreddit is for solar photovoltaic (PV) professionals, owners, and enthusiasts. The solar module and the systems it drives - whether small residential installations or large, utility-scale power plants - is one of the great inventions of the modern age. Steady improvements in materials, design and labor have dramatically lowered costs, module efficiencies have improved gradually as well - both serving to make the technology much more competitive against fossil fuels in recent years. What changes when solar PV is combined with batteries? What is the global impact of solar PV on the overall energy industry? When will solar become affordable for all? Shine on you brilliant solar enthusiasts!

Be sure to check out our wiki for more solar information and resources.

Tip for help requests - because of variances in things like regulations, prices, and amounts of solar radiation, it is useful to provide general location info such as country and state when asking for help/info regarding your solar project.

Solar Links

Solar Job Training Resources

* The Solar Career Mapping Tool - This is an interactive Solar Career Map offered by the Interstate Renewable Energy Council (IREC). It is designed for workforce professionals, educators, policymakers and job seekers. See - http://www.irecsolarcareermap.org

* Clean Energy Training Directory - Training providers, workshops, undergraduate degree programs, graduate programs, and more. Searchable by country, state, and technology. See - https://irecusa.org/credentialing/credential-holders/

Find the latest Help Wanted feature post HERE which includes links to several industry job listing sites

/r/solar

165,098 Subscribers

1

Local Solar company in CT

Hi I'm looking for a reputable, local solar company to do business with.

I own a solar company in NJ. And have a customer interested in solar for his properties in CT.

I need a solar company that knows what they are doing with their solar installs, micro inverters preferably, hide conduit or go through attic, and be able to perform a full reroof if needed with quality work.

Please write here any recommendations, if I can speak to the owner directly even better.

Thank you in advance!

0 Comments
2025/02/02
04:13 UTC

3

Can someone please (nicely) explain to me why I keep having an electricity bill? Sorry I'm a solar noob.

Hi, solar noob here. We live in Southern California maybe it's just that we're in the winter, but we keep having an electric bill every month. We have THREE Tesla Power Walls and we're putting in a pool so I really want to make sure our system is performing as well as it should be when we start heating the pool. I can't believe we're using exorbitant amounts of electricity. I'm attaching pictures of my electric utility bill "usage" report from December as well as a screenshot from the Tesla app for December and sunpower's app for December. Can someone tell me what the heck is going on?

https://preview.redd.it/yiq3iz9cymge1.jpg?width=1170&format=pjpg&auto=webp&s=0384866fa74651a464de39cee99a5c27084c6f12

https://preview.redd.it/rhumg9n4ymge1.jpg?width=1170&format=pjpg&auto=webp&s=8d68adc3f260d49d5aa26b6d412f756af2c07a30

https://preview.redd.it/yfdlzneaxmge1.png?width=1784&format=png&auto=webp&s=ec7f6248944b3dcab543f2d9c6a4fd3d7cac3b30

https://preview.redd.it/zcfyokibxmge1.png?width=2094&format=png&auto=webp&s=59231c048f02d382ce1af8d5cca63d0b92a6e3b2

https://preview.redd.it/yrx0j5fdxmge1.jpg?width=1170&format=pjpg&auto=webp&s=09c1bbb53d98ea7f25da81ddf2b18394dc270a10

22 Comments
2025/02/02
02:22 UTC

1

The hope of bi-directional grid support home back up

Can anyone tell me if there is a bi-directional system where I can use our solar panels to charge the EV, then the EV battery to power the house and sell excess to the grid?

7 Comments
2025/02/02
01:21 UTC

1

Question regarding PHEV charging and solar/batteries

Could I ask the crowd to weigh in on a strange question?

I have a PHEV (Volvo xc60) with a small battery. I usually charge overnight. I also have solar and two powerwalls. I'm wondering if it's better for me to charge during the day using a combination of solar and battery or if it's better to keep charging overnight. In winter I don't usually generate excess and I love in a state without tou pricing so it doesn't matter when I charge.

What does the crowd think?

2 Comments
2025/02/01
23:41 UTC

0

Blue Raven Solar

Has anyone done business with Blue Raven? I just sat through a presentation for a proposed system on my house in Virginia. The numbers were pretty attractive and they are offering no payments for the first 18 months. Proposed system would produce 102% of my demand based off of my bill. Total system cost is approximately $77k. Does Blue Raven do quality work? Any issues with their systems?

EDIT: 12.555 kW for $74.6k. No money down, first 18 months of payments covered by Blue Raven.

11 Comments
2025/02/01
23:34 UTC

6

Vertical Panels on SW facing deck?

We are building a shop/living space in Colorado that will be off grid. The deck/gambrel end faces Southwest due to the site. We will need to oversize our array to meet heating demands on the few coldest days of the year. Rather than an additional Sinclair Skyrack, would it be feasible to mount vertical panels under the deck? I know they wouldn’t be much use in the summer, but we’ll have a huge surplus of power on those days anyway. (Minimal to no cooling load). Installing the Sinclair system faces some challenges with terrain and drilling into rock. It’s not a huge deal to install additional racking, but this would be much easier. The deck posts will be there whether they have solar panels mounted on them or not, so with as cheap as panels are, this seemed like a decent solution. How much production will we sacrifice in the dead of winter due to being vertical, and about 45 degrees west of true south ??

11 Comments
2025/02/01
22:24 UTC

64

Tariffs official

First set of tariffs started now. Guess we will see how it affects solar prices and supply chain.

Trump announces new tariffs on Mexico, Canada and China | CNN Politics

https://www.cnn.com/2025/02/01/politics/mexico-canada-china-tariffs-trump/index.html?iid=cnn-mobile-app

37 Comments
2025/02/01
22:15 UTC

19

Mom died and her house had solar panels. Dad wasn’t on the lease and being told that even if he makes the payments, they’re going to put a lien on the house and send the solar balance to collections. Is there really nothing he can do?

They were living together and his name is on the house, but they were legally divorced, which complicates things I’m sure. I have no idea how these solar leases work and he has no clue what to do.

32 Comments
2025/02/01
22:10 UTC

1

String Anomaly. 3 times in 3 weeks (different days) one string of about 8 panels goes straight across at 70v until 9:30 AM when the voltage shoots up to 'normal'.

1 Comment
2025/02/01
21:48 UTC

3

Thanks for all the advice! I took a now generating!

Still waiting for final walkthrough and them to set me up with the Enphase app, but Sense is showing me good results.

28 x REC460 28 x IQ8

1 Comment
2025/02/01
20:06 UTC

1

Help

Today I installed this SOLIS inverter but grid And load does not show up correctly. Is there a fix?

1 Comment
2025/02/01
19:30 UTC

2

Solar quote in the Shenandoah Valley area of Virginia

Hi! I was wondering if anyone had any opinions on this quote, if it's good or not. This is for installation on a standing seam roof using a penetration-less mechanism like S5!.

11.7 kW

26 x REC450AA Pure-RX

26 x IQ8X-80-M-US (240V)

Total System Cost: $34,983

Estimated cost after incentives: $21,382

Estimated payback period: 9 years

Local installer - in business since 2015. NABCEP in-house installers. 25 year warranty on everything with REC ProTrust Warranty.

Thank you for considering my post!

5 Comments
2025/02/01
18:50 UTC

2

Can a single PW3 handle a 20 kW system?

I’m getting quotes for solar and was planning on getting a second power wall 3 later on down the road to reduce the immediate cost a bit. I’m going to pay for it outright rather than get a loan so that’s the reason I’m trying to keep immediate costs down.

The system itself is going to be a 45 panels for a 20 kW system and I’ve been reading that’s pretty much the max a single powerwall can handle. Is this the case? Is there a reason i should bite the bullet and get two powerwall 3s right away?

15 Comments
2025/02/01
18:13 UTC

1

True up questions

I live in Northern California and I am looking to see if solar is worth it. My goal is to not have to use PG&E at all but if I do make the True Up as small as possible. Is it even possible to not have a True Up bill? My electric bill runs between 500-650 a month. Would an oversized system with batteries accomplish this or would I just be throwing money away?

13 Comments
2025/02/01
17:48 UTC

13

Update on “Sanity check”: thanks to Reddit I’m producing again!

Original: https://www.reddit.com/r/solar/s/uV0Pouf57l

A friendly redditor connected me with a local installer/roofer who removed and replaced the panels for under $4k. As of today we’re officially producing again, now with a new roof!

Just wanted to share my appreciation.

2 Comments
2025/02/01
17:04 UTC

1

Does anyone know the story behind this SolarEdge technical footnote?

https://knowledge-center.solaredge.com/sites/kc/files/se-power-optimizer-s-series-datasheet.pdf

Around the middle of Page 2, this spec sheet says "For installations after April 1st, 2024, the Rated Input DC Power for S440 is 490W, and the Maximum Isc of Connected PV Module is 15A."

I'd like to rely on this for an upcoming install, but it seems like magical thinking? Or is it that this extra padding was already built-in, and SolarEdge decided at some point they needed to disclose it in order to maintain some sort of competitive edge?

I'd call SolarEdge myself (or rather, I have tried) but I'm on leave from the industry per se at the moment and I guess they don't return calls from people not affiliated with a company.

4 Comments
2025/02/01
15:57 UTC

1

Purchasing new home with Sunrun

Looking at a new home with sunrun panels. They have 13 years left on the 20 year term. After getting past the terrible customer service, is it really worth it in the end? Has anyone else purchased a home with sunrun panels? What is everyone's experience with this company?

15 Comments
2025/02/01
13:35 UTC

0

What does this button do?

Can anyone tell me what the button on the SolisCloud app, circled, does? It says I need to install the latest firmware, which I don't know how to do. What feature am I currently missing?

4 Comments
2025/02/01
13:06 UTC

3

Thoughts on growatt inverters

Purchasing a grid tied system. No battery.

Inverter options are: A 10kw growatt inverter, Or Two 4.8kw SMA Sunny Boy smart inverters for $3k more.

Is one better or worse then the others ?

9 Comments
2025/02/01
12:57 UTC

1

Mini split system

So my I plan on adding a mini split into my garage in the spring when I redo it. And I was planning on adding a mini split to keep it nice year round but I’m worried about the power it’s going to take to run it. AEP loves me already I pay them way too much so I want it to be solar powered completely but I don’t know where to start. I have a mini split pick out on Amazon but I’m not sure if I need to get on that is compatible or not or how much power I need or anything. Can someone help me or point me into a website that can bundle everything together. I need at 18k BTU for the garage to work.

9 Comments
2025/02/01
11:45 UTC

0

Trying to make the numbers work

Can someone help me out. I've had a quote for 10x425w solar panels, a 3.6kw hybrid inverter and a 9.5kwh battery. All in it's £8200.

I used roughly 10kwh per day on the house and recently bought an EV. Which I now charge roughly 10kwh on an overnight tariff.

Currently pay 24.7p /kWh between 7am and 11:59pm. It's then 6.7p/KWh at 12-7am. Export rate will be at 16.5p/kWh

My thoughts was to charge the car and battery overnight. Run the house off the battery and export all solar to the grid.

Would this be the best way to go about it to see maximum return?

Thanks

0 Comments
2025/02/01
08:02 UTC

1

SolarEdge Inverter

I moved in a home will solar already setup. It’s been a year and the inverter stop working. SolarEdge sent a replacement. The original installer went out of business, empire. Would I need to find an installer to replace the inverter or can I do it myself? Thanks!

5 Comments
2025/02/01
05:14 UTC

20

Is the residential solar tax credit (30%) still available or has that been killed by the new admin?

I cannot really tell whether Trump has killed it or not. Anyone got any insight?

86 Comments
2025/02/01
05:08 UTC

0

Sunrun - reconnect to internet?

Any Sunrun owners out there know how to connect the system to WiFi? My sunpower system at my old home was pretty straight forward but I can't see from looking at the Solar Edge hardware. I see some WiFi network ID on the side but I can't connect to it and it doesn't show up. I recently bought the home so the old network is gone. I chatted Sunrun and they said it would take 5-7 days which makes no sense because they have no clue what the new network is (and it would be instantaneous anyways). I'll try calling them I suppose but wanted to ask here.

5 Comments
2025/02/01
04:56 UTC

0

Utility company reporting much lower energy produced that system

We have a home with a solar array that for most of the year thus far produces more than we use (we've had it less than a year), and we have credits from the utility that take us through the winter months' much higher bills due to less sun and that we only have baseboard/electric heat. We also do not have a battery that stores any energy, and while we are gone during the day for school and/or work, we leave the house at about 60 degrees.

For the months of December and January, the utility company has given us bills that state we're producing way less than what our system is telling us we generate...over 50%. This hasn't been a problem from March to November, however.

How can his be, and where would all this 'extra' energy be going if we were in fact producing this energy that isn't accounted for by the utility company?

11 Comments
2025/02/01
03:49 UTC

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