Valdemar
Posts: 2304
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Official Southern California Edison thread

Fri Oct 14, 2016 7:44 pm

smkettner wrote:Aim to cover 50% of your usage with solar for maximum return on investment.


One size doesn't fit all. Also rates and rules change all the time all the time and this may not be a good advice long term. It may end to be beneficial to lock into a NEM agreement with a system that covers more than 50%.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB)
64AHr, SOH 99%, 99k miles
9kW Solar

SurfHawk
Posts: 67
Joined: Thu Sep 22, 2016 1:43 pm
Delivery Date: 22 Sep 2016
Location: Santa Barbara

Re: Official Southern California Edison thread

Sat Oct 15, 2016 5:24 pm

Thanks for the replies, this info is helping me wrap my head around this TOU stuff.

Valdemar wrote:Baseline credit w/o solar is simple, you get 10c credit per kWh up to your monthly baseline allocation, check with SCE what that number is for your area. It gets slightly more complicated with solar, as you may end up paying this money to SCE if you system generates more than you consume per pay period.


We are in Zone 6 which gives us 9.4kWh per day in summer, works out 286kWh per month. Does that mean we get a $28.60 credit if we go on TOU-D-A in the summer? That would be great.

First solar guy said to get a 3kW system if we didn't get a EV, 4kW if we did. We then bought the Leaf and had the second solar guy out, after I had some usage with the Leaf. He has yet to quote but sounded like he wanted to go smaller than guy #1. Second solar guy is a Nissan Leaf owner on a TOU plan, so his suggestions could be good.

Thanks for all the help.
2013 Leaf S - Quick Charge - Purchased 10/2016

smkettner
Posts: 6962
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: Official Southern California Edison thread

Sat Oct 15, 2016 5:41 pm

My SCE bill shows a separate line for 320 kWh and a 31.61 credit independent of all other charges.
746 kWh was net usage.
1 bar lost at 21,451 miles, 16 months.
2 bar lost at 35,339 miles, 25 months.
LEAF traded at 45,400 miles for a RAV4-EV

tbleakne
Gold Member
Posts: 914
Joined: Wed Jul 28, 2010 12:05 pm
Delivery Date: 03 Jun 2011
Leaf Number: 2400
Location: Claremont, CA

Re: Official Southern California Edison thread

Wed Dec 28, 2016 9:51 pm

Those of us in SCE territory can be relatively grateful we live in one of the better utility territories for Solar Net Metering, despite the recent changes. However, we need to be vigilant because this push-back from the utilities is relentless.

Dec 21, 2015: Arizona Vote Puts End to Net Metering for Solar Customers

https://www.greentechmedia.com/articles/read/Arizona-Vote-Puts-an-End-to-Net-Metering-for-Solar-Customers

compensate distributed solar exports based on a five-year average of utility-scale solar PPA pricing.

Recent Utility-scale prices are really low, because economies of scale bring the installation price down to about $1.20/watt or even lower, which is about 1/3 the price charged for residential roof-top installations. I feel distributed solar is worth much more, closer to retail, because our power is consumed locally without using the HV grid, but utilities don't want to see it that way.
compensation for distributed solar exports using the RCP methodology would remain around 11 cents per kilowatt-hour for most customers, which is nearly on par with the current retail-rate net metering credit. However, updated assessments that include the latest utility-solar pricing could put the actual RCP credit rate significantly lower.

regulators approved keeping current distributed solar customers on their current rate plans for up to 20 years from their interconnection date.


A ruling in Louisiana Nov 2016 looks worse:

http://www.katc.com/story/33764612/louisiana-public-service-commission-eliminates-cap-on-solar-net-metering

any residential or business customer will be credited for every kilowatt hour (kWh) of electricity they put onto the grid for an equal amount of energy in return during the monthly billing period. Any credits in excess of their use during the month will roll over to the following month, but now at a lower "avoided cost" wholesale rate.


"Avoided Cost" can be really low, below wholesale, if the utility just counts the fuel saved by your generation, since wholesale also includes capital cost of both generation and transmission.
LEAF Ocean Blue SL, "100 % Electric" decals, Delivered June 3, 2011
Sold June 2014 27K miles, 18% capacity loss, 1 bar, 5.0 mi/kWh.
Solar 4.6 KW DC with both string and micro-inverters.

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