r/maryland 23d ago

MD Flag is the Best Flag Installed solar, my power bill was $8.94 (again)

1 month later update, I made a post last month about my March bill being $8.94. My April bill is also $8.94.

We flipped on central AC sometime early April and use a window unit to cool down the master. We usually set the AC to 65 or so for a few hours to cool down the house at night (upper levels are very hot).

Since for whatever reason most of the bills in this subreddit don't have hard numbers, here are my hard numbers

  • Credit from last bill: -112
  • Current month usage: 757
  • Current month excess: -1058
  • Total kWh balance: -413

Pepco Usage summary and charges

Meter reading

Charge details

Excess gen check

I don't have a consumption meter, but April we generated 1.7 MWh.

Someone smorter than I can probably interpret these numbers in more detail, I'm just a solar-stan.

349 Upvotes

143 comments sorted by

73

u/RidethatTide St. Mary's 23d ago

Do you lease or own the array?

56

u/lukeott17 Montgomery County 23d ago

This is my question. I’d need to see and understand the costs.

82

u/dihydrogen_monoxide 23d ago edited 23d ago

Own, it was 38K with a 11K credit back.

My March 2025 bill was 198.96

Apr 2025 218

May 2025 313.53

June 2025 500.73

July 2025 548.05

August 2025 484.75

September 2025 436.09

75

u/RidethatTide St. Mary's 23d ago

When will you break even? I’m not trolling, just curious

138

u/mia5893 23d ago

Just doing quick math OP would break even in about 5 years.
38k - 11k = 27K
$27,000 / ~$450per month = 60 months = 5 years

Also assumes that energy prices won’t increase in the next 5 years. So sooner if they do

36

u/dihydrogen_monoxide 23d ago edited 23d ago

Also I'm generating minimum 55$ srec sale each month, I also got a 43 check this month for the annual payout

21

u/MDRetirement 23d ago

We generated 4 srecs last month.  $150.  Wooop!

5

u/tommyalanson 22d ago

Four! How big is your system!?

I did 2 SRECs last month. But ah, I’m on a DC feeder line so I can sell them in dc for over $400 ea

5

u/Unfair-Ocelot4255 22d ago

Same. My panels generate about $400 every 6weeks from SRECs. I love getting a negative Pepco bill for 10 months a year.

17

u/PatsFanInHTX 23d ago

Just to add, you also get paid for every MWh of generation (SRECs) plus you get paid if you are a net exporter at a bit over 10 cents a kWh. So there are additional savings.

17

u/urnbabyurn 23d ago

Not including interest rates to discount future savings compared to upfront costs is completely wrong.

Otherwise, I’d happily borrow $100 from you today and pay back $110 in five years.

15

u/mia5893 23d ago

I think OP mentioned he paid cash since they didn’t want a 7% interest rate

18

u/urnbabyurn 23d ago

It’s not about the explicit interest rate on borrowing. It’s about interest foregone by spending that up front cost.

9

u/2008AudiA3 22d ago

Dude, if you like paying Big Brother for your electricity, go for it. Other people like being self-sufficient and helping out the environment. You do you.

-3

u/urnbabyurn 22d ago

I don’t look to spend $20k extra on electricity out of principle.

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6

u/Realistic-Changes 23d ago

You are right and this is wild. I was so upset by not getting my solar in before the feds collapsed it, but I get about 4% on my savings and pay way less than OP in electric. I wasn't doing the math right at all - I am so glad I didn't get them now!

-8

u/FunNegotiation3 23d ago

And you would probably make a lot more by investing in index funds. Plus when you go to sell your house, you won't have ancient solar panels that have passed their life-span which will force you to either put on a new roof or new panels before you sell.

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2

u/oneWeek2024 23d ago

i mean... if their average monthly cost is less. presumably they could save/invest that difference. (google says 12-20 yr terms. ...with 15 being common at 7% on 27k. would put you at give or take $250 a month ...so aprox half what they were paying in peak months...so maybe figure 6mo out of the year they can realize those savings that's $1000-$1500 a year ...or 45k total cost over 15 yr[$250 payment times 180 months] . but... potentially 22.5k ...orrrrr $1500 a year. each year at 8% invested is 45k after 15yrs so... quite literally if they're smart. and realize/max those savings and invest it. the install is free)

and there's also tax avenues to undercut some of those interest payments ...ie if you financed the solar with a heloc/home refi loan. or "secured" loan. can deduct the interest if you're itemizing. which you likely should be.

1

u/BeeAruh 23d ago

When did you get it installed?

1

u/Quirky_Highlight_864 22d ago

How many Panels did you end up installing, also how are you getting the credit back with the federal tax credit for owning ending last year?

1

u/dihydrogen_monoxide 22d ago

I installed in November. 32 Maxeon panels total

-1

u/KaffiKlandestine 22d ago

I didnt think maryland weather would be good for solar.

1

u/dihydrogen_monoxide 22d ago

Its not California but it's something.

SoCal gets double to triple the production. They do not have srec sales like ours though.

-17

u/hispanicausinpanic Rockville 23d ago

People flex about solar but the facts are that you break even by the time its all said and done. Except now your roof is inaccessible and you'll need to hire people to move all the solar out of the way to do repairs.

23

u/jasonpbecker 23d ago edited 23d ago

Not remotely true. My parents on Long Island have had solar for 15 years. Broke even in 5.5 years. Ten years with effectively no bills. No issues, no problems, and probably at least 10 more years of life on the panels.

(Edit— I know the payoff was 5.5 years because I remember my dad behind happy it was 6 months more than he calculated, but it’s possible they’ve had the system slightly less than 15 years. I know it’s been at least 10 but COVID is causing my brain to question exactly how long)

(Edit again: confirmed system was installed in 2010)

0

u/urnbabyurn 23d ago

Is that including the time value of money? You need to discount future savings against up front costs to get a true economic comparison. Money today is not worth the same as money in the future. A reasonable interest rate could add quite a bit to the break even time.

5

u/jasonpbecker 23d ago

Factoring in investing the upfront cost pushed back the savings between 12-18 months, maybe. People value cash flow as well, depending on their stage of life, and this break even does not include any value of the asset itself (which is depreciating, but 5 years into a system that's cashflow break even that has a rated life of 30 years, with 20 years with virtually no efficiency drop did increase the asset value of their home at that time-- no energy bill + new roof is factored into buyer mindset).

1

u/dihydrogen_monoxide 23d ago

My system apparently has a 40-year warranty... If they live that long,..

0

u/urnbabyurn 23d ago

Point is, the discount rate matters. So simply adding up the stream of savings isn’t accurate. If interest rates rise, it makes it less beneficial than when interest rates are low.

6

u/OldOutlandishness434 23d ago

Not by that much.

7

u/jasonpbecker 23d ago

If you want to be pedantic, sure. I'm not giving someone a calculator with all possible inputs to calculate their return now. I'm not even saying, "if you want the maximum return to capital, go and spend it on solar". My parents wouldn't own a home if the goal was the greatest return possible on capital.

2

u/dihydrogen_monoxide 23d ago

You're forgetting that you are paying your power either way. Sum next 5 to 25 years of power payments with a 10-15% escalation per year.

0

u/urnbabyurn 23d ago

Energy costs don’t consistently rise at 15%. They largely go up with inflation, which is less than the relevant discount rate.

2

u/dihydrogen_monoxide 22d ago

Pepco had a 17% rate hike in June 2025.

The next rate hike is proposed to be 23%.

https://energyandpolicy.org/pepco-maryland-rate-hike-2026/

2

u/2008AudiA3 22d ago

Energy prices also go up when idiotic policies are implemented and unnecessary wars are waged in the Middle East

2

u/emp-sup-bry 23d ago

Yeah sure.

You say shit like this as if we all aren’t paying these insane bills every month.

Maybe you should consider the fact that all these people producing energy through PV is saving these oil and gas shilling asses money through reduced demand for oil and gas.

What a terrible hobby you have here

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14

u/md4pete4ever 23d ago

I had my roof replaced at the same time I installed solar (combo discount for both). Roof will last longer than the panels normally, and the panels actually protect the roof.

10

u/PatsFanInHTX 23d ago

Lol, so wrong. How long do you think it takes to breakeven? 5 years. So yes, don't put solar on an old roof. That's just common sense. But it also protects the roof from the elements and UV wear over time.

9

u/americansherlock201 Baltimore County 23d ago

This is objectively not true. There was a time when it was but that is long past.

Cost of solar has dramatically decreased over the years. This makes going to a solar system much more cost effective. With many people breaking even within 5 years or less. Add in additional rising energy costs and the savings add up quicker.

Also, new solar systems have a much better installation method than older ones. Making them better for the long term health of your roof. Add in that you don’t actually need to access your roof all that often and yeah, they become a no brainer

0

u/emp-sup-bry 23d ago

That’s why I only use whale oil. IM ON MY ROOF RIGHT NOW ABD ITS NO PROBLEM TO DO THE 47th REPAIR JOB ON MY TOTALLY ACCESSIBLE ROOF THOS MONTH.

12

u/dihydrogen_monoxide 23d ago edited 23d ago

Own, it was 38K with a 11K credit back.

My March 2025 bill was 198.96

Apr 2025 218

May 2025 313.53

June 2025 500.73

July 2025 548.05

August 2025 484.75

September 2025 436.09

5

u/dcux 23d ago

Did you finance? We started down the path with the community solar program, but couldn't really afford to take on the loan we'd need. I wish we had solar on the roof...

3

u/dihydrogen_monoxide 23d ago

No, the finance interest rate was over 7% when we were looking at proposals.

6

u/dcux 23d ago

So cash, then?

1

u/phover7bitch 23d ago

What company did you use? Were you happy with them?

5

u/dihydrogen_monoxide 23d ago

Celestial, 10/10 experience

1

u/fredblockburn 23d ago

How does that work?

2

u/dcux 23d ago

Google "switch together Montgomery county" for the program info

6

u/dihydrogen_monoxide 23d ago

I didn't like the provider they had selected. The quote was very high.

1

u/Quirky_Highlight_864 22d ago

Yea I agree and they didn’t offer a prepaid lease option wither

1

u/FartingWithStyle 18d ago

Are you on the residential rate? I didn’t realize I needed to switch my rates from time of use after getting my solar and a kinda confused which one to switch to now.

1

u/dihydrogen_monoxide 18d ago

Residential, I never changed it

1

u/FartingWithStyle 17d ago

Cool, my house came grandfathered into some tou service.

28

u/aschwarz52 23d ago

It’s your fixed, monthly customer charge.

Everyone pays that no matter how much electricity you generate or consume. It is the same every month. Mine is about $9 on BGE.

14

u/rectumrooter107 23d ago

It's the charge to simply be connected to the power grid, iirc. 

29

u/ericmm76 Prince George's County 23d ago

We should be subsidizing this across the country. Completely.

11

u/Echo_Delta_Mike 23d ago

Great post and follow up questions. Posting so I can stay informed.

21

u/Evening-Recover-9786 23d ago

What’s your anticipated break even timeframe for the installation of solar? I can’t get over the upfront cost. Feels like I’m just prepaying utility bills.

16

u/md4pete4ever 23d ago

I installed Solar 12 years ago (Solar City at the time). They own the panels (and repairs/upgrades) and I prepaid 20 years of guaranteed generation. Payback time was ~7 years. Someone's estimate on OP's numbers is payback in ~5 years.

4

u/HappyStalker 23d ago

How often have you had them repaired or upgraded in those 12 years?

23

u/md4pete4ever 23d ago

One time a fews years in - initiated by the company (Tesla bought out Solar City). Had squirrels get interested in the wiring and chewed through something so the panels were offline and not generating. Company came to investigate, figured out the problem, and then took ~6 month to design a solution and install (wire fencing guards around the edges of the panels). They also swapped the panels out for a more efficient model. We got a rebate check from them for the energy that wasn't generated that year, so no real impact to us.

2

u/LetThemEatVeganCake Silver Spring 23d ago

No impact to you, so does that mean you didn’t have to pay for the new squirrel guard?

4

u/dihydrogen_monoxide 23d ago

I had those added with initial install.

Lumina requires them

2

u/md4pete4ever 22d ago

I think we were relatively early with solar installation and the industry hadn't figured out that they need to have those.

3

u/dihydrogen_monoxide 22d ago

There was a story last week about squirrels making a nest under a panel that caught fire

2

u/md4pete4ever 22d ago edited 22d ago

I didn't pay anything for the repairs and upgrades because Tesla owns the panels. I pre-purchased a certain amount of power generation each year. Any short fall in generation means they send me a rebate check.

4

u/lowlybananas 23d ago

We've owned our solar panels for 11 years and haven't had to repair anything.

1

u/horse-boy1 23d ago

I installed 3kw myself in 2007, much easier to do back then. I had the inverter go bad 10 years ago and I replaced it myself. It was going to cost almost as much to repair it than a new one! I also had a couple of leaks, so I removed the panels fixed the issues and reinstalled them.
My pay back was around 7 years. There was a state grant of $5k and Federal tax credits which helped.

9

u/blupanteez 23d ago

If you have the cash and you consider the return on a bank CD, owning solar is the better deal.

5

u/Willothewisp2303 23d ago

My husband thought I was nuts,  but even his calculations showed it made sense. 

0

u/dihydrogen_monoxide 22d ago

Technically it would be bank CD return - (sum of electric bills for the year). My power bill is high enough that it basically negates most if not all cd gains and I'm still in the negative.

7

u/Big-Location3986 23d ago

I have solar and get a $10 bill every month. Just fees for being connected to their grid. I also got a $150 check from them too when the overage cashed out last. And zero grid consumption over the past year too.

7

u/harvey6-35 23d ago

I think the $8.94 is an account charge. If you sign up for Pepco energy wise awards, you'll have no bill from March/April until Novemberish.

My bill was about $6 but I have an electric car and a long commute that uses my previous surplus power. But I did also get $37 in SRECs to balance out last month.

5

u/on_island_time Montgomery County 23d ago

Love it, can you share a general location (even just county) and who was your installer?

We're on Potomac Edison and when I've looked into solar in the past, it wouldn't save us substantially on our bill. Which frustrates me and I'm hoping won't always be the case.

3

u/dihydrogen_monoxide 23d ago

Celestial, moco

4

u/lowlybananas 23d ago

I wish. We live in Delaware. Last month we put 235 kWh into the grid. Our bill was $41.

1

u/Fit_Roll_5348 22d ago

You save everywhere else in taxes, so just evening things out with other states in cost of living

3

u/da6id 23d ago

Pepco has an $18 monthly customer service charge even if you are net exporter to the grid for the month. Your provider likely similar

1

u/Long-Time-Coming77 22d ago

OP is serviced by Pepco and the monthly charge is $8.94 when you include taxes/fees.

You can see it clearly if you look at the attachments OP included

3

u/mollymalone222 23d ago

Just asking, your electric bills seem so high to me. I've never had one over $200. Is that the new norm? Thx.

5

u/LetThemEatVeganCake Silver Spring 23d ago

They could have an EV/EVs. We have two EVs. For our April bill cycle, we used 980kwh to charge and 682kwh for our house (total bill minus data from the charger). Our electricity bills obviously got significantly higher when we switched to EVs, but we used to have to pay for gas.

Edit to add: it is also annoying because Pepco ends up sending us tons of emails saying we use way more electricity than similar houses. They know we have two EVs because we have them linked to Pepco for charging to happen on lower-stress times for the grid, but they harass us anyway lol

4

u/dihydrogen_monoxide 23d ago edited 23d ago

Inefficient house really, we both work from home. If the AC is 73, upstairs is 78. So we set it to 68 for big cool days, with window unit on for the master which is a huge energy hog.

1

u/mollymalone222 22d ago

Ah yeah, I can see that then.

1

u/dihydrogen_monoxide 22d ago

Window unit isn't on today, the master is 80 already.

1

u/forever-salty22 Kent County 21d ago

Same. Our bill averages around $150, but we have a small house...

3

u/Solarpanel20 23d ago

How much did it cost to install?

3

u/CingKobraJFS 22d ago

We went solar last year, and I would highly recommend it to anyone who has the means to do so.

Happy to answer any questions as well.

2

u/ImportantSun735 22d ago

What company did you use for install ? Ballpark cost and how do you rate the company, own or lease??

1

u/CingKobraJFS 22d ago

We own ours, it’s a 14 panel array. Cost was around 17k but after fed, state, and local rebates be paid about 5k net.

Used a company called Standard Energy Solutions based out of Columbia. They were pretty good to work with, not trying to constantly upsell us.

2

u/Thefathistorian 23d ago

I actually got a 28 cent credit last month.

2

u/RCoaster42 23d ago

Fixed month charge for Pepco. Look under transmission charges.

2

u/Long-Time-Coming77 23d ago edited 23d ago

Here are my financial calculations

Installed System: 40 x Hyundai 440w panels with Enphase micro-inverters

  • System cost (cash price) $42,966
  • Federal tax credit $12,890
  • Net Cost $30,076

  • 25-year warranty on the solar panels and Enphase micro-inverters.

  • 10-year warranty on the Enphase monitoring equipment.

Previous 12 months Pepco bills = $3800** (19600 kWh total consumed)

System annual estimated production 21400 (110% production)

SREC income* = $700 per year (21 MWh x $22 x 1.5)

Break-even without including opportunity cost = 6.6 years

Break-even including risk-free interest rate of 4% on $30k compounded annually = 9.8 years ($44200 total)

Note that this does not include any income from selling excess generation back to Pepco during annual true-up and does not factor in any increases in electricity rates, both of those will accelerate break-even

*SRECs currently at worth ~$45 each but the value should drop to $22.50 by 2030. There is a 1.5 multiplier in effect for solar systems installed between July 1, 2024 – January 1, 2028. I am using the more conservative $22 figure here.

More details on SRECs: https://www.srectrade.com/markets/rps/srec/maryland

**I was signed up with a 3rd party electric supplier for most of those 12 months so my electric supply rates were lower than the Pepco SOS rate. Third-party electric suppliers are no longer available in Maryland due to legislation so I would expect to pay more than $3800 for the same 19600 kWh now

2

u/dihydrogen_monoxide 23d ago

Big usage

1

u/Long-Time-Coming77 23d ago

Two EV family and a good amount of computers/networking gear and electronics

1

u/dihydrogen_monoxide 23d ago

2 EV would do it

2

u/KaffiKlandestine 22d ago

It feels like solar is getting cheaper is that true? I feel like i remember break even used to be like 20k. I think it could be good for a new administration that brings back alot of the solar subsidies and when solar is even cheaper

1

u/Long-Time-Coming77 22d ago edited 22d ago

I haven't followed it closely but I was surprised when I got serious about it last year and saw how much the panels themselves have dropped in price (and increased in output), a typical top-tier panel costs about $200

Unfortunately the cost of the materials is probably about only half the total project cost when you have it done professionally - there is a substantial amount of paperwork involved (interconnection agreement, permitting) and of course labor.

Probably there was more padding last year with the tax credit expiration looming.

It would be great if the federal solar tax credit comes back when a new administration takes office.

One of the benefits of Maryland is that we have true 1:1 net metering so any excess electricity you push to the grid is credited against electricity used later (e.g. at night) so there is no need to install expensive batteries - the grid basically acts as a battery for free.

3

u/I_love_manatees 23d ago edited 22d ago

Does you system use the Enphase platform? If so you can connect online see more details about your production and consumption.

For example this is my April data.

Edit: I'm also happy to answer questions or provide more data if anyone is interested.

Edit 2: because size does matter, I have 28 panels.

2

u/Sumotron 23d ago

Here’s my April data.

2

u/Long-Time-Coming77 23d ago

My April data

https://imgur.com/a/UamuYyF

Setup: 40 x 440w panels with IQ8MC micro inverters

9 panels azimuth 163 (South-SouthEast)

31 panels azimuth 253 (West-SouthWest)

3

u/Sumotron 23d ago

I’m envious. I have 49x 435W panels and the same inverters, but mine are all east and west facing.

2

u/Long-Time-Coming77 23d ago

Wow 49 panels is a lot.

Do you ever wonder how much more production you could get with the IQ8AC or IQ8HC?

The latter was an upgrade for me for an additional $40/panel and I didn't think it was worth the extra cost but seeing my panels max out at 326/327 for hours a day makes me wonder how much more I could have gotten with the IQ8HCs

2

u/Sumotron 23d ago

Nope. My task list only grows and neither my brain nor my mind get a break. I’m happy we got the system installed last year, and when they come out with the plug and play bidirectional charger we will get that and a “cheap” EV to offset gas costs and give ourselves backup capability. Plus we generate much more than we use.

2

u/dihydrogen_monoxide 23d ago

Yuge

2

u/Sumotron 23d ago

Told the guy to fill her up.

1

u/dihydrogen_monoxide 23d ago

You have a consumption meter

2

u/I_love_manatees 22d ago

That comes with the micro inverters (I think) - maybe you also have access to it and don't know ? You can ask the company that installed your panels if there is a monitoring system to see your production/consumption. You can ask them directly about Enphase I guess, it's pretty common.

1

u/dihydrogen_monoxide 22d ago edited 22d ago

It doesn't, it's a CT added in to the box. Enphase sells it separately (they keep sending me ads for it).

It gives you more info but in the end it's more of a nice to have than a necessity.

1

u/I_love_manatees 22d ago

Ok ! I totally agree that's it's "nice to have" but not a necessity. I'm a numbers nerd so I love it

Also you might want to look at your Pepco account. I know I have the option of downloading my consumption data (regardless of going solar, I've had this option for years). But again, I don't know if it is specific to certain meters or something all the customers have access to.

1

u/dihydrogen_monoxide 22d ago

Mine doesn't show consumption anymore, just the net positive/negative, where is it on your menu?

https://i.imgur.com/JNzoHhA.png

1

u/Sestos 23d ago

Since most of my bills is gas and electric transmission costs...and my usage is like 1/4...I wish I was paying for what I used but almost the entire bill is BGE getting it.

1

u/Black_Raven_2024 23d ago

Mine was $9.75.

1

u/Alternative_Rip_1616 23d ago

What’s the size of your solar system? The cost of my system was just about as much as yours.

1

u/TheMagickConch 22d ago

Which company did your install and what panels or system did they install?

2

u/dihydrogen_monoxide 22d ago

Celestial, Maxeon panels with enphase inverters

1

u/TheMagickConch 22d ago

Thanks. I'll keep that in mind. I missed out installing in 2019

1

u/semiprobo 22d ago

Does anybody know how much it cost to have the panels removed in order to have a new roof put on and then reinstall? Only reason I didn’t do the solar panels years ago because my roof was old and I’m waiting to replace it first. Thx

1

u/dihydrogen_monoxide 22d ago

Replace the roof first

1

u/mbster2006 21d ago edited 21d ago

Cost me $120 per panel last Summer. 22x panels total. Insurance covered it as I had to replace a 12 yrs old 3-tab asphalt roof with hail and wind damage. New roof even lowered my premium afterwards.

1

u/Pleasant_Flatworm866 22d ago

Congrats. I'm still waiting for Tesla to re-install my system after an addition. Maddening.

1

u/blupanteez 21d ago edited 21d ago

I have owned solar since 2019. My roof does not leak. They have worked with no problems. I’m very pleased. If I were to sell my house and somebody objected to having free power, they would be fools. I charge my electric car for free. I pay nothing for gasoline. (If I have to take a road trip say to the beach or out of state I’ll rent a car.)
That is a savings of $2000 a year tax-free.
Electric vehicle cost, used: $ 10,000
Cash Cost of installation, without battery, after credits/ rebates:$30,000
Fuel costs at $5dollars a gallon annually: $3380
Old annual cost of electricity 2025: $3600
New annual cost of utilities, 2025:$ 108
Annual savings,which is tax, oasdi free:
3380+3600 - 108=6,872
Actual annual Rate of Return: 17%

Bank cd rate of return as of May 2026including 28% net federal and state income tax rate: 3%

-7

u/wereatnownow 23d ago

"I am so smart, s m r t"