CitadelBlue
Well-known member
Cant believe there are no costs to the homeowner for solar power. Anyone care to share their experiences...cost paid out, rebates received, tax credits, etc?
The cheapest/easiest way to get into solar power is micro-inverters.
Basically, install one full size (2M x 1M), connect it to a micro-inverter and then plug it in any convenient wall outlet. If you have 240VAC, you can have 2 panels.
Cant believe there are no costs to the homeowner for solar power.
Anyone care to share their experiences...cost paid out, rebates received, tax credits, etc?
First thing, micro inverter has to be sized to the panel, second microinverter puts out 208-240 depending and last but not least one should never ever plug it into a house hold receptacle
The whole point of a micro inverter is that it IS sized 1 for 1 to a standard 72 or 96 cell solar panel.
Most micro inverters output 120V.
I have seen professional plug them into standard receptacles. This is your disconnect.
I have seen professional plug them into standard receptacles. This is your disconnect.


That system is not "Free". It just does not cost you anything at the time you get it installed.
Kind of like car dealers who have adds that say "No money down". That does not mean the car is free.
Jim
Solar is the real deal, you just need to be careful who you are dealing with and personally I would never get into one of those 'lease' type options. I think the best way to go is to buy the equipment outright -> Hire a reputable contractor and figure out your 'break even' point and if you can live with that
The cost of electricity is only going to go up, especially like places in S Cal. My system was installed in July of 2016 with a total 'out of pocket' cost of $29k. To date, about 4 1/2 years later, my system has produced 94 MWh (that's 94,000 kWh). S Cal Edison charges $.23 but as you use more electricity you get into a higher 'tier' and the highest tops out at $.37 per kWh. So just using the $.23 rate, my system has produced almost $22k in electricity so far. Another year and half we will break even and then for the next 15 to 25 years the panels will be offsetting on average a $400 a month electric bill
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We've been installing solar for like 19 years on the East coast. Prices have plummeted over that time due mostly to declining cost of the solar panels. These days is someone is trying to sell you a residential rooftop system at over $3.00 per DC watt, before any incentives, walk away. Prices should be closer to $2.50 or even less.
For asphalts shingle mounts the most important part is the type of flashing used. If they want to use what is essentially a plate with goop on top of the shingles screwed into the decking, run away. The ones that sit on top of the shingles and lag to the rafter are a little better. But what you want is a real flashed pentation. There is a bracket that lags down on top of the shingle, but then a 12" x12" aluminum flashing goes up under the row above and drops down. They take a lot longer to install, so you'll see the guys that have only been in business a couple of years, and some of the big leasing outfits use the surface sealing only kind.
The next important piece is wire management up under the panels. You don't want wires hanging down rubbing on the roof or getting caught on ice and snow. You see lots of leasing company roof arrays with a skirt at the bottom. That's there so you can't look up and see the haphazard wire management. Its a bad idea that traps debris against the roof. It also raises the temperature of the solar panels slightly. The colder a solar panel is, the higher the voltage so more power. Blocking the convective air flow lowers production.
Exposed conduit runs across the roof is just lacking of caring to do it right and wanting to finish in a hurry. Each separate section should have what's called a Soladeck box under it that allows sections to be connected together in the attic instead.
There are lots of ways to cut corners to do 1 Day installs. Exposed conduit, peel and stick flashings, and micro inverters all are intended to speed installation more then they are to provide the most long lasting solutions.
Yes, I said microinverters. They are fast to install and you don't need to know anything about how solar works to be successful with them. But they have always had a high failure rate. The main company that provides them releases a new series every couple of years that's supposed to fix the failure problem. We'll see on the the latest series. It takes 5-7 years for the DC to AC conversion electronics to experience heat failures. Well except the ones that fail much earlier. You can get all of the benefits of micro inverters with a a systems that uses DC to DC optimizers for each panel, but does the DC to AC conversion off the roof. The DC optimization does not have the same failure rate.
But unless you have a lot of differential shading, or small roof spaces pointing in different directions or at different tilts, you don't need to optimize panel by panel. That will save you a couple of thousand on a residential array, and reduce the potential points of failure. You likely need to deal with something called "Rapid Shutdown" if you don't optimize or micro invert, depending on what NEC version your area is under. If so , it's easiest just to optimize. Check out the SolarEdge equipment for an inverting solution that's both feature packed and reliable.
Ground mounts don't need rapid shutdown, and if not differentially shaded see only a tiny improvement from panel level optimization. So that's a good place to just use a string inverter and save money.
It's certainly possible to install your own solar. It's also easy to start fires with DC arcs. So do your homework and know the code if you take it on for yourself. Homework is a good idea before you sign with an installer too. read the fine print, those leasing deals ****, so go into them with your eyes wide open. Don't be fast to say yes just because it's "Free". The average homeowner can save $40K or more over 25 years with solar, even with paying off a loan. If you lease you may end up paying more for your electricity, some lease deals have costs that go up 3% a year. Read the contract.
It is interesting to see the different 'net metering' agreements
When our system was installed, we got in under Net Metering 1 which gives us full retail credit for any surplus that goes back to the grid, so it doesn't matter when our peak usage is. That changed in Net Metering 2 where people still get full retail credit but everyone is forced on to a Time of Use plan where the cost of electricity really spikes in the later afternoon/evening (usually 4 to 9 PM the rate can double)
We are also billed on a yearly basis and any 'credits' at the end of the year can be rolled over or they will pay you for it - but it is at the wholesale rate which is around $.03 per Kwh
My utility (SCE) limits how large of a system you can install. I had to get a waiver to get the max allowable - which was 120% of the previous years usage. So at this point we are capped at 12.5 kWh DC, which is roughly 20,000 kWh a year
Just to show the difference in the old, 'Tiered' plan versus the new 'Time of Use' plan that everyone has to use now. Last year I tried the TOU plan because they guaranteed (in writing) that it would save us money. At the end of the 12 month period when it came time to pay the bill, it showed that we owed them over $800, but when the applied the guarantee and used the Tiered Plan instead, the price dropped to a little over $100. (So last year paid a little over $100 for electricity, all the years before that we generated more than we used.) Also, SCE increased their rates 7% in 2020 and they are now asking for another 14% increase in 2021. And, all new residential construction has to have solar installed, by law.
We completed our first month of solar production almost 1.2MWH from our 7.6KW system that I described in post 17 above. Almost exactly matched the simulation (prediction) So far so good. 1.2MWH is worth $144 @ 0.12/KWH here in Tucson. But since we used only 1/2 of what we produced as we produced in real time, we probably only saved about $72 from our bill, however, we get credit at 0.0868/KW for what we push back into the grid, so in reality, our monthly "value" for the first month was about $72+$52 or $124. We are adjusting to using the power as its generated rather than pushing it into the grid for credit. For example, it makes sense now to do the laundry or charge the cars mid day now vs in the evening. I hope to see us using closer to 75-80% in real time to maximize the value. But time will tell.
My electric utility (SCE) which is a 'for profit' corporation, apparently has so much cash that last week they sent out a technician who replaced my 17 year old furnace blower motor with a brand new, brushless (energy efficient) electric motor, installed an EcoBee smart thermostat, checked my AC system ducts for leaks (they taped all the registers shut and then pressurized the system with a computerized blower) and checked the freon levels. Total Cost was $ZERO
"The Direct Install program is funded by California utility ratepayers and is administered by Southern California Edison under the auspices of the California Public Utilities Commission."
And where do you think the PUC is getting those funds?
[emoji848][emoji848]
Well it says it right there in the quote - from the utilities' rate payers (it's customers) not the federal government
I am in the process of getting solar panels installed this week. It would have been nice to get them for $2.50 per DC watt, but that isn't available in this state. I think I'm at $3.10 before federal and state tax rebates.
Net metering can't last forever. I figure that eventually there will be enough solar panels that the PoCo won't be able to afford to both pay full-price for what their customers generate and pay for maintaining the big generating stations that are needed during blizzards. Something will have to give.
I just hope that net metering will last for ten years, so my system pays for itself.