20kW Residential Solar Panel System Financial Analysis- Was it Worth it?
Вставка
- Опубліковано 7 вер 2024
- We installed a 20kW Solar panel system with 19.8kW battery storage and are net metering back to the grid. Was it worth it? Yes, could we of gotten a better ROI? Yes, watch the video to learn more. 56 Solaria 360W solar panels with SolarEdge optimizers, inverters , power meter, utility net meter, (2) LG 9.8Kw batteries and iPhone app.
My Tesla 20kW installation was just commissioned today.... I have 4 power walls, I am hoping to be self sufficient with it
That’s awesome, love to hear how it pencils out
20kW is such an enormous system. I'm a bit envious. The 20-year payback doesn't sound right at all though, but generally speaking throwing batteries into an installation has never been economic in terms of pay-back. Still, 20 years seems too long even with a small battery system, unless you also have whole-house backup for when the grid is down (verses just net-zeroing with the batteries in a grid-tie system), in which case things can get expensive in a hurry.
Strictly grid-tie without batteries has always been the most economical solution with the shortest payback... even with the low $0.03/kWh grid payments and even if the electric company won't net-out the day. It tends to make more sense to take the $$ that would have been spent on batteries and just throw that into more solar panels.
The second issue is ... 20kW is really an enormous system, so why isn't that bill negative every month? Is the pool really burning up that much power? Does the house have AC but the AC isn't running efficiently? There might be avenues for reducing your power consumption. It really is an enormous amount of power... like 110kWh/day in summer.
* Pool pump timing
* Get a heat-pump water heater and a very large tank programmed to top-up the water temperature before 4pm.
* Check AC consumption and run times over the year.
* Check overnight power draw from midnight to 6am to see what the minimum draw is on the house. This can often be cut in half or more with just modest work. My TV wasn't going into sleep mode, I replaced my outside lighting with LEDs that automatically turned on and off based on dalight detection, LED lights inside all around, etc. I was amazed at how much 'vampire' draw I could get rid of. A lot of surprising consumption often comes out of the woodwork.
If you can cut your power consumption even just a tad it can drop your payback period from 20 years to 15... possibly without too much effort.
Keep in mind I added a power upgrade for $10k and the batteries so if you take those out the payback would of been much better. Also the pool has (3) pumps due to the water features and they all run at various times to keep water filtered etc.
Also, we size our systems for the cloudy winter days.
I would never be tied to the grid. Once the grid goes down your system goes down. What’s the point?
Your using a glowatt app. So 18 KW, maybe a bit low. I would want 45 KW at least, more if using a electric car.
I guess it is an irrelevant question to ask how many years/decade to pay back. Most owners don’t know the answer, for it’s not about money.
Ask everyone that buys the jacked up 4wd, $80K trucks what their ROI is. I can guarantee my maintainance, repairs and lifespan will be better than today's junk trucks.
Agree, I knew the payback was not going to be the big driver for us being how much power we draw and what I added on to the build
@@gingervibesfamily5999 I retire an electrical engineer. I build 1KW system, now into 2nd year. Hands on fun fulfillment ok. $900 in all. I saved $500 this year, running fans and air conditioning in scorching Vegas 110degrees. 3500’ home.
Next year I have paid up. After owning the system there’s still maintenance.
In all, it is a pleasant experience. Besides electrical/structural I also focus on architecture presentation.
@@gingervibesfamily5999 when people ask me about payback, I ask them when is there payback for their electric company.
I think if your looking at 20 year payback (ignoring the resale vale of the system) then you've overpaid. There's no doubt in my mind that by far the best value for money is simply a good quality string inverter (SMA in my case) and put as many solar panels as you can on to it. Be it 4kw, 8kw, 12kw. Your looking at under 8 year pay back (more like 4-5 in the UK where already high electricity costs recently doubled). As soon as you start listening to the salesmen and spending $$$ on optimisers and batteries and all the other gubbins you simply just increase and increase the payback period.
I really liked telling the power company to turn off our meter. No more padding execs pockets, paying fuel surcharges and paying more school taxes.
You are correct! And I do say that if I did it again I would of gone with Tesla as they have a lower cost per watt. I was also adding a power upgrade to the house to benefit from the tax deduction as a total project.
🙈 p̷r̷o̷m̷o̷s̷m̷
We are Saved by Grace Through FAITH NOT WORKS. Salvation is a free gift from GOD given to those all who will believe LORD JESUS CHRIST DIED AS A SALVATION LAMB for our sins by the BLOOD OF LORD JESUS CHRIST HIS BLOOD CLEANSES Our Sins (WHEN YOU BELIEVE IT)!!
No thanks. Your wife and daughters won't be safe in church. Everyone in the "club" likes to turn a blind eye to their preachers serial cheating. Well, that was until I busted him. He was fired, divorced...Again.