Category: "SCE"


  02:52:00 pm, by Jim Jenal - Founder & CEO   , 321 words  
Categories: All About Solar Power, SCE, Energy Efficiency, Residential Solar, Ranting, Solar Policy

Solar Policy: A Victory and a Challenge

As a reader of this blog, you care about solar policy making, and are no doubt aware that the utilities are constantly trying to erode the value of solar.  Recently we notched a big win, but at the same time the need for vigilance is ever greater.  Here’s our take…

An Historic Win

First the win - as you have no doubt heard, starting in 2020, California will require that all new single-family homes include a solar power system.  (At present, about one in five new homes has solar added when built.)  This will help California meet its ambitious goals regarding greenhouse gas emissions, and will continue California’s leadership in home energy efficiency.

An Ongoing Challenge

As exciting as that news was, it makes it far to easy to overlook the constant, ongoing efforts of utilities, particularly the Investor-Owned Utilities (IOUs), like SCE, to erode the value of solar.  Case in point, SCE has a rate case before the California Public Utilities Commission that attempts to create rate structures that are blatantly hostile to solar power systems.  That means that SCE customers who installed solar in good faith, could see the value of their investment diminished thanks to a concerted effort by SCE to do just that!

Solar Rights Alliance

Fortunately you don’t have to take this lying down.  The Solar Rights Alliance (formerly known as Solar Citisuns) is working to organize solar system owners into a potent political force to push back against the army of lobbyists employed by the IOUs.  There are over 700,000 solar system owners in California - that is an interest group that needs to be heard.  By joining the Solar Rights Alliance you will help to make sure that your interests are being heard by legislators and regulators alike.

It is easy to join: just follow this link to become an active member of the Solar Rights Alliance.  The IOUs have the lobbyists, but we have the people!  Be heard - join today!



  10:20:00 am, by Jim Jenal - Founder & CEO   , 1339 words  
Categories: All About Solar Power, Solar Economics, PWP, SCE, Energy Efficiency, Residential Solar

My Electric Bill is So High! Will Solar Help? Part 1: How High is High?

We hear it all the time: “My electric bill is so high, I just want to stick it to [insert name of utility here]!  Can solar help?” Now we are in the business of selling and installing solar, so our preferred answer is, “Of Course!"  But that is not always the answer we end up giving.  So Part 1 of this three-part series focuses on that electric bill to answer a few questions first: 1) How high is it? 2) What can you do to make it lower - pre-solar? And 3) Is your home even a good candidate for going solar?  Let’s look at each in turn…

How High is High?

Ask most any consumer how high their electric bill is and they will all pretty much tell you – too high!  So let’s recognize a few things at the start: if you are a PWP or DWP customer, your electric bills will be lower than your compatriots sufferi, er, living, in SCE territory.  SCE bills monthly, whereas PWP and DWP bill (roughly) every two months.  Most non-solar, residential customers are on a tiered rate structure - that is, the more you use, the more you pay for what you are using.  That said, not all tiered rates are alike: SCE has a true, three-tier rate structure where the cost increases in each subsequent tier, whereas PWP has a bizarre structure where the “highest” tier is actually cheaper than the middle tier!  (I wonder how many PWP customers realize that perverse incentive?) 

Taken together, what can you say about how high is high?  We would break it down roughly this way:

  • $100 per month or less - Solar is probably not going to pencil out for you.  While there are many reasons to go solar besides the economic ones, if your bill is this low, saving money is not going to justify solar.

  • $100 to $300 per month – depending on the other factors discussed below, bills in this range are more likely to have a strong economic justification, particularly in DWP territory, where a small rebate remains to help lower your out-of-pocket cost.

  • $300 or more per month – Solar is exactly what you need!  The higher your bill, the more solar makes sense.  (We had a client with bills that averaged over $1,000 per month!  His payback was four and a half years!)

To illustrate how and why that works, let’s look at the modeling that goes into sizing your system.  (For this analysis we made use of Energy Toolbase, one of the most sophisticated tools available for modeling the performance of PV systems and producing comprehensive, authoritative and transparent solar proposals.)  We created three different usage profiles corresponding to the categories set forth above.  All were SCE customers under the current Domestic rate structure in region 9 (i.e., Altadena).  The first had usage such that their average bill was under $100/month.  The second had bills between $200 and $300/month, and the third had bill in excess of $450/month.  In each case, summer usage was higher than the rest of the year.

Total electric bill savings, middle-use case

Energy Toolbase allows an installer to run multiple simulations of total bill savings based on the size of the system to be installed.  On the right is that output for our middle-case client.  It’s a little hard to see in the small version of the graph (click on it for larger), but the light green line (which represents the savings under the new, SCE-forced rate structure) levels off at 7.9 kW.  That inflection point means that a system sized larger than that is no longer providing a full economic benefit to the client.

We performed similar analyses for the other two use cases to determine the optimal system size, and to then determine their savings and payback.  Here are our results:

Payback as a function of system size

As system size increases, even without assuming any improvement in price based on economy of scale (the system price in each case is $4.00/Watt), it is clear that larger systems have significantly greater return on investment over the life of the system.  If your bills fall into that third use case, you are going to benefit greatly by adding solar.  But in that first use case, not so much.

What can you do to make your bills lower – before adding solar?

However, even if your use case makes sense, it is important to consider some low-hanging fruit before plunking down thousands of dollars on a solar power system.  The two most obvious candidates for investment are pool pumps and air conditioning systems. 

Pool Pumps

Older pool pumps tend to have single speed motors, which means that they draw the same amount of energy all the time.  But harken back to your elementary school science classes: a body at rest tends to stay at rest; a body in motion tends to stay in motion.  (Thank you, Isaac Newton!)  What’s that got to do with pool pumps?  Well, all that water in your pool has  a lot of mass and when it is just sitting there it takes a great deal of energy to get it moving - it’s a big body at rest!  But once you get it moving, it is relatively easy to keep it moving, so you need to expend a lot less energy to do so. 

Single-speed pool pump motors don’t get that, and they just keep pumping as hard as they can the entire time they are on.  That is wasteful, and expensive.  A variable-speed pump, on the other hand, embraces the eternal wisdom of Sir Newton, and throttles down over time.  That saves energy, and thus money.  Even better, utilities like SCE will give you a rebate (from SCE that is $200!) toward the cost of installing a variable-speed pool pump.

Updated A/C

The other big opportunity for savings is in an updated A/C system.  Newer systems are significantly more efficient out-of-the-box, and as older systems age, their efficiency decreases, meaning they are costing you more to operate.

Other Savings Opportunities

You don’t really have an old refrigerator running in your garage, do you?  If it is old, it is inefficient, and you’ve just put it in the hottest part of your home (short of the attic) so it has to work really hard to keep that case of beer cold.  Either ditch it altogether, or only run it when that party is about to happen!

How old is your thermostat?  Does it even work, or do you just use it as an on/off switch?  New, smart thermostats can save you money - and there is likely a rebate there, too!

How good a candidate is your home for solar?

Ok, your use case is compelling, even after harvesting all that luscious, low-hanging fruit.  So is it now certain that solar will help?  Um, maybe.  How good of a candidate is your home for solar?

We have written about this at length before, for example here and here.  If you have lots of shading, your house will not be a good candidate – you don’t want to be the owner of a system installed under a tree!

But other issues can change the value proposition for installing solar.  For example, your electrical service might be ancient and undersized, requiring you to spend additional money to upgrade to a newer, larger service.  If you are installing a relatively large PV system, that is a relatively small increase, but on our small use case, upgrading your service panel can add 10 to 15% to the total cost.

Other factors that are not show-stoppers but which increase costs are second-story and/or steeply pitched roofs (both of which just make the labor costs higher because the work goes slower), roofs other than composition shingles, service panels located far from where the array needs to go (like the array on a detached garage but the service panel in on the side of the house with a concrete driveway in between).

How can you know for sure?  Simple, have a professional installer come out and do a proper site evaluation.  So how do you find such a person?  Ah, that is the subject of Part 2: How Do I Find Someone to Trust?


  02:14:00 pm, by Jim Jenal - Founder & CEO   , 347 words  
Categories: All About Solar Power, SCE, Residential Solar, Net Metering

Beware SCE's Attempt to Switch Solar Customers to TOU Rates!


Attention SCE customers who installed solar before the NEM 2.0 deadline (that is, you installed solar before July 1, 2017) - we just learned that SCE is sending around notices suggesting that you switch over to a Time-of-Use rate. You do not need to make that switch, and you most likely don’t want to!
Here are the facts…

SCE customers who installed solar systems prior to the transition to Net Energy Metering 2.0 rules ("NEM 1.0 Customers") are grandfathered into their existing tiered rate structures for 20 years following their go-live date.  While the costs under that rate structure may change, the basic design - a tiered rate where you pay more the more you use, versus a time-of-use rate where what you pay is tied to when you use it - is locked in.  For most solar system owners, that is a better deal.

But we just learned that SCE is trying to convince NEM 1.0 Customers to switch to TOU rates.  (You can find their oh-so encouraging web page for the transition here.)  For the vast majority of solar system owners, such a transition is NOT IN YOUR BEST INTEREST!  The TOU rates have their highest charges either from 4-9 or 5-8, and their lowest charges between 8 a.m. and 4 or 5 p.m.  That means that any energy exported back to the grid will be compensated at the lowest rate (unless your system happens to be exporting after 4 or 5 in the evening, not very likely), whereas energy you need to use in the evening will cost you the most!  

Check out these numbers:

SCE's 4-9 p.m. TOU rate      SCE's 5-8 p.m. TOU rate
SCE’s 4-9 p.m. Time-of-Use Summer Rates   SCE’s 5-8 p.m. Time-of-Use Summer Rates

Yikes!  That’s a whopping 49¢/kWh if you select the 5-8 p.m. rate - but you will only earn 23¢/kWh for energy that you export from your solar system!  Not a good deal at all!

The good news is you don’t have to make this switch!  And if you mistakenly were convinced to switch, you have the right to switch back.  (Similar scams are underway in PG&E and SDG&E territory as well.)  If you have questions, give us a call and we will help you to sort this out.


  10:17:00 am, by Jim Jenal - Founder & CEO   , 459 words  
Categories: All About Solar Power, SCE, Residential Solar, Net Metering

NEM 2.0 is Here - Now What?

Net Energy Metering 2.0, or NEM 2.0 for short, is now the law of the land, at least in SCE territory.  So what does that really mean for potential solar clients?  Here’s the scoop…

NEM 2.0 brings three changes to how new solar clients will be treated by SCE (customers of PWP, LADWP, or any other muni utility are unaffected).  Let’s take a quick run through each one:

  • A one-time application fee - new solar clients will be charged $75 as part of the interconnection application process.  (In the past there was no charge.)  Not a big deal, just another annoyance from SCE.
  • Switch to Time of Use rates - this is a much bigger deal.  Most residential customers are on a two-tiered rate structure with a “penalty” tier for users who exceed 4x baseline allocation.  Under that rate structure the maximum cost for energy is 31.224¢/kWh.
    Going forward, new solar customers will be charged based on when they use energy, not how much energy they use, with a Summer, on-peak energy cost of 44.665¢/kWh!  Ouch!  Peak hours are weekdays (holidays excepted) from 2-8 p.m.
  • Non-Bypassable Charges - Under the old rules, energy that was imported from the grid could be entirely offset by energy exported onto the grid.  Now, for every kilowatt hour imported, regardless of exports, the customer will pay a small (for now) non-bypassable charge of 2.25¢/kWh.  Again, the utilities were pressing for this to be a much higher number, but for now this is a relatively minor surcharge.

So what does this all mean?  The answer is, it varies.  For some clients, particularly those with west-facing roofs, they may actually do better under TOU rates than they would have staying on the old, tiered rate plan.  But to answer that question requires a proper analysis, and this is where potential solar clients need to do their homework and look closely at their solar bids. 

EnergyToolbase screenshot

Here’s what to look for.  Your potential installer should be requesting that you provide them with SCE’s “interval data” for your home.  This hour-by-hour data for the entire year allows for a proper analysis of your usage, and makes it possible to compare that historical usage with the modeled output of your proposed PV system.  If they aren’t asking for interval data, they are taking shortcuts with their savings analysis - likely in ways that inflate your potential savings on paper, only to result in disappointment down the road.

Run on Sun uses UtilityAPI to access SCE data securely, and we employ EnergyToolbase (pictured above) to do our analysis of your potential savings - two of the most highly respected and sophisticated tools in the solar industry.  We have the tools and the expertise to give you the most accurate projection of your future savings from solar - so let’s get started!

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  05:11:00 pm, by Jim Jenal - Founder & CEO   , 497 words  
Categories: All About Solar Power, Solar Economics, SCE, Residential Solar, Ranting, Net Metering

NEM 2.0 is Coming - But Not Before July 1

As a solar installer working in SCE’s territory, we get messages from them on a regular basis, including those regarding the upcoming transition to NEM 2.0.  But the email we received today (actually two copies of it!) was a bit, how shall we say, high-strung?  Here’s our take.

NEM 2.0 will occur when the first of two events occurs: SCE interconnects enough residential and commercial solar projects to reach 5.0% of its total aggregate power demand, or July 1.  We have written before that SCE will never get to the 5% beforehand, so the deadline is 23:59:59 on June 30. 

So we were a tad perplexed to see this email today - here’s a sample:

417 MWs Remaining in NEM 1.0

As SCE gets closer to its Net Energy Metering (NEM) 1.0 Cap, we want to remind everyone of the importance of submitting complete and accurate interconnection request(s) (IRs). You should be receiving similar notifications within the online application system (i.e., PowerClerk).

Why is the 417 MWs remaining important?

For those applicants and customers with an existing IR moving through the interconnection process, we are sharing this information so that you may plan accordingly as SCE approaches its NEM 1.0 Cap. Once the cap is reached, the existing NEM tariff will close to new customers and the NEM 2.0 (NEM Successor) tariff will become available. With approximately 417 MWs remaining in the NEM 1.0 cap, this is a friendly reminder to please submit all documentation necessary for receiving service under NEM 1.0 and do so as soon as possible.

(Emphasis in the original.)

Wow - you would think that this might happen any day now, based on that language.  Except that it won’t - not even close.

Here are the underlying numbers:  SCE’s total cap is 2,240 MWs - a target it has been building toward since 2007!  As of today, in SCE’s territory, 1,823 MWs has been installed.  That means it has taken roughly  3,595 days to install that capacity, which works out to roughly half a Megawatt per day.  With 417 MWs left under the cap, and just under 58 days before July 1, we would have to be installing at the rate of 7.2 MWs/day!  Uh, no.  Just Not Going To Happen!

(If you would like to see exactly how much time we have before we hit the actual deadline, check out the Doomsday Clock on our Residential Solar page.)

However, the reality of that deadline does have consequences.  For potential commercial clients, sorry, but you are out of luck - there is just not enough time to get a new commercial project designed, permitted, constructed, and approved before July 1.

Potential residential clients are in a slightly better position, but only slightly as your window of opportunity is rapidly closing.  For example, we are already booked solid for the entire month of May with just SCE projects (we have pushed everyone else back to try and help as many as possible in SCE territory meet the deadline), and we can only guarantee an approved interconnection for NEM 1.0 by mid-June.  If you’ve been thinking about solar in SCE-land, please don’t wait, call or email us today!

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Jim Jenal is the Founder & CEO of Run on Sun, Pasadena's premier installer and integrator of top-of-the-line solar power installations.
Run on Sun also offers solar consulting services, working with consumers, utilities, and municipalities to help them make solar power affordable and reliable.

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