Tag: "sce"

09/30/18

  07:45:00 pm, by Jim Jenal - Founder & CEO   , 896 words  
Categories: All About Solar Power, SCE/CSI Rebates, BWP Rebates, GWP Rebates, LADWP Rebates, Electric Cars that Run on Sun

EV Rebates - not just for PWP Customers!

Last month we wrote about a rebate program being offered by Pasadena Water & Power for both the purchase of an Electric Vehicle (new or used) as well as the installation of EV chargers.  Which got us to thinking, don’t the other local utilities have something similar?  Well guess what, they do!  Read on to see what might be available from a utility near you!

EVs being charged

Southern California Edison (SCE)

SCE offers rebates for both purchasing an EV as well as installing a level 2 (i.e., 240 VAC) charger.

EV Rebate

The SCE rebate for purchasing an EV is $450.  Here are the requirements:

  • You must be an SCE residential customer (vehicles registered to businesses are not eligible).
  • The EV must be among the vehicles listed on the Drive Clean website (which lists 35 models of EVs from 2018 alone!).
  • The vehicle’s registration address must be the same as the customer’s address with SCE, but the name on the service account need not be the same as that of the vehicle owner.
  • The vehicle’s registration is current with the State of California.
  • The vehicle has not received more than two rebates in the past.
  • If you have multiple EVs, each vehicle is subject to a rebate if the above qualifications are satisfied.

To apply for the SCE EV rebate, go here.

Charger Rebate

SCE also offers a rebate of $500 to install a Level 2 charger at your home.  Here are the requirements:

  • You must enroll in one of the available Time-of-Use (TOU) rates.  BE CAREFUL!  Depending on your usage patterns this might be a very expensive option!  Run on Sun can, for a nominal fee, assess your present usage and let you know what your annual bill would do under each of the available TOU rate options.  Please contact us if you are interested in our providing you with this service.
  • You need to pull a permit for the installation, and have the work performed by a C-10 electrician (B contractors are not allowed to participate in this rebate program).
  • You need to provide a copy of the signed-off permit after inspection and a copy of your permit receipt (be sure the electrician provides you with these documents).

To apply for the SCE EV charger rebate, go here.

Los Angeles Department of Water & Power (LADWP)

LADWP does not appear to offer a rebate for the purchase of a new EV, but they do offer a rebate for purchasing a used EV, as well as installing an EV charger.  Their overall EV page is here.

Used EV Rebate

LADWP is offering a pilot program for the first 2,000 approved applicants who purchase an EV two or more years old (i.e., model year 2016 or older).  The rebate is $450 and opened on April 1, 2018. 

Here are the requirements:

  • EV must be two years old or older, and never received an LADWP rebate for its purchase previously.
  • EV must have been purchased after April 1, 2018.
  • Permanent residence must be served by LADWP
  • Complete the rebate application - download it here.
  • Copy of DMV registration
  • Copy of bill of sale
  • Proof of residence

EV Charger Rebate

LADWP offers a $500 rebate for installing a Level 2 EV charger (i.e., 240 VAC).  Program requirements are:

  • Completed rebate application - download it here.
  • Proof of EV charger purchase - paid invoice that includes
    • Purchase date
    • Retailer name, address and phone
    • EV charger make and model
    • How paid for - check, credit card, etc.
  • DMV registration that shows EV registered at account address
  • Photos of completed installation, nameplate of charger (showing serial number, make and model number)

Interestingly, LADWP does not specifically require the installation to be permitted and inspected.

Burbank Water & Power (BWP)

BWP offers a rebate of $500 for residential EV charger installations.  (You can access the rebate application here.)  They do not appear to offer a rebate for purchasing EVs.

Program requirements for the EV charger rebate are:

  • Applicant must be a BWP customer or charge their EV at a location served by BWP.
  • Agree to be switched to a Time-of-Use rate in return for the EV charger rebate.  CAUTION: this could be an expensive switch.  Be sure to consider how and when you use energy before agreeing to switch.
  • Application must be submitted within four months of purchase.
  • Installation must be hardwired (i.e., not plug-in) Level 2, and permitted and inspected by the City.
  • Supporting documentation including:
    • Copy of charger purchase receipt/invoice
    • Copy of installation receipt
    • Copy of signed-off permit
    • Copy of DMV registration
    • Photo of installed charger

Glendale Water & Power (GWP)

As is often the case, GWP’s programs mirror those of BWP.   GWP offers a $500 rebate for residential EV charger installations, but nothing toward the purchase of the EV itself.  Here’s a link to their overall EV page.  One interesting wrinkle, GWP issues the rebate in the form of a credit on your GWP bill - none of the other rebate programs said that.

Here are the requirements for the EV charger rebate:

  • Applicant must be an active GWP account holder.
  • Charger must be a new, Level 2 (i.e., 240 VAC) charger, and the application must be submitted within four months of purchase..
  • Installation must be permitted and inspected by the City if the charger is hard-wired.
  • Supporting documentation includes:
    • Copy of charger receipt/invoice
    • Photo of installed charger
    • Copy of labor receipt (optional)
    • Copy of the signed-off permit (if required)
    • Copy of DMV registration and car purchase or lease agreement

Access the GWP EV charger rebate application form here.

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08/17/18

  03:15:00 am, by Jim Jenal - Founder & CEO   , 1210 words  
Categories: All About Solar Power, Residential Solar, Energy Storage

What I Saw at Enphase - Mind Blown!

Enphase hqLast month during Intersolar, I (along with colleagues Sara and Victoria) was lucky enough to get invited to see a microgrid demonstration featuring the Enphase next-gen IQ8 at their headquarters in Petaluma, California.  As I had to sign an NDA as the price of admission, I was unable to write about what I had seen until today, when Enphase hosted their annual Analyst’s Day.  But I am no longer bound by that agreement, and can now tell you about what I saw. 

To say that I was impressed would be a gross understatement - quite simply, it was the most astonishing thing I have ever seen in the solar industry.  Settle in and let me tell you what I saw…

What Happens Today

Before I launch into describing the demo, let me remind you of what happens today.  All of the systems that we have installed are what is referred to as “grid-tied” which means that if the grid goes down, the PV system that is capable of back-feeding the grid also goes down, and remains down until the grid comes back.  (This is to prevent your house from being an island of energy, feeding the grid, and potentially injuring a worker trying to restore grid service.  As a result, this feature is known as “anti-islanding” and it is required of all inverter systems that are connected to the grid.)

Normally this is not a problem, but last month, when it got super hot out here (think 115° F hot!), both SCE and LADWP suffered dozens of outages, taking down PV systems across large swathes of LA County, and leaving frustrated PV owners without power, or A/C, just like their PV-less brethren.  Not good.

What I Saw in the Lab

Which brings us to what I saw at Enphase last month.

The lab looked like an ordinary industrial space, but with a series of household appliances and tools at one side.  There was a simulated array feeding a bank of IQ8 inverters, and a display that showed the output of the array (i.e., PV production), the total consumption from the loads, and any power being exported or imported to support those loads.  At the start of the demo the only load was a single red lamp, and the display indicated that it was drawing roughly 90 Watts.  The PV array was producing roughly 1.9 kWs, so the excess 1,800 Watts was being exported to the grid.  All super normal stuff.

But then things got interesting…

One of the engineers switched off the breaker that connected the PV array to the grid… and nothing happened!  Well, actually, a lot happened, but what didn’t happen was that the red light did not go off.  It didn’t even flicker to the extent that we could detect it.  But then when you looked at the display you noticed something amazing.  Not only had the microinverters created a grid on their own in fractions of a second, but they had throttled the output down so that now the production of the PV array exactly matched the load of the red light!  And here’s the kicker - there were no batteries attached to this system!!!

But what fun is just having a light on?  How about some toast?  So they switched on a toaster, and it lit up, and the total load jumped by about 1,000 Watts, making the total load now around 1.1 kW, and the PV array scaled up to meet it!  Still no batteries.  And how about this - there was no central controller, no master-slave relationship between the microinverters.  Rather, this was the “hive mind” at work, as the micros sensed the demand and scaled up or down as necessary to meet that load!

But wait, there’s more!

The next load to be added was a grinder like you might find on your workbench in the garage.  All by itself, that device drew roughly 1,200 Watts, bring our total load to roughly 2.3 kW - more than the maximum output of our simulated array.  What would happen when that was added to the mix?  Surprisingly little.  The grinder spun normally, but the red light dimmed slightly.  What was going on?  The system’s “hive mind” had lowered the voltage slightly (a microgrid equivalent of a brown out) to meet the amperage demand of the new load mix!  So slightly slower than normal, cooler than normal, dimmer than normal, but all operating.

Of course, all good things must come to an end.  Our already overloaded microgrid faced one more challenge - a vacuum cleaner with a significant in-rush current, far in excess of what the grid could sustain.  Indeed, as soon as they switched the vacuum cleaner to “on", everything shut off.  Nothing was damaged, the microinverters just shut off to protect themselves.

Turning on the vacuum cleaner served as the “ah-ha” moment for the potential homeowner - I guess I can’t run everything in grid outage mode.  So what do you do when something you just did produced an undesired result?  Well if you can, you undo it!  Turning the vacuum cleaner off, immediately restored the microgrid to its previous state of operation!  No delay.  No human intervention - just turn off that latest (over)load, and the system recovers on its own!

How cool is that?  Pretty damn cool, if you ask me!

Batteries Please?

So what about batteries, how do they play with this new system?  Just exactly as you would want.

The engineers added a bank of batteries to the mix, each with an IQ8 installed.  Now the display also indicated the battery’s overall state of charge, and whether they were charging or discharging.  Reset the demo to just the red light as a load and the batteries at 30% state of charge.  The PV array output jumped back to its maximum, with the surplus energy being used to charge the batteries.  As more loads were added, the PV array remained at maximum output, and as needed, drew power from the batteries.  Should the batteries reach full capacity and the PV output is greater than the loads, the microinverters will once again throttle down.

Sweet!

What’s Next?

I hope you agree that this was an amazing demo, and the IQ8 (or Ensemble, as Enphase refers to the overall system) has tremendous potential, both for Enphase as a company, and for so many nascent markets.  Think of how this product could have helped out in Puerto Rico, or in parts of Africa which have never, ever seen a grid!  Makes me want to book a trip to bring power to a village somewhere - hey Laurel, what do you say?

For our own clients, this has the potential to be the answer we have been seeking ever since Elon’s whoppers got people thinking about storage for the first time ever.

A point we raised with Enphase management is the need to have a reasonable upgrade path for existing clients.  Indeed, I have a call with Enphase tomorrow to discuss that very topic.  We know that current Enphase IQ products (the 6+ and 7+ we have been installing this year) will be compatible with Ensemble.  We expect to be able to work with older systems, though there may be a higher retrofit cost.  When we have that information, we will surely let you know!  The IQ8 is expected to be available in 1H2019… watch this space!

07/30/18

  08:45:00 pm, by Jim Jenal - Founder & CEO   , 500 words  
Categories: All About Solar Power, Solar Economics, Residential Solar, Ranting

Think Your Solar Investment is Safe? Think Again!

Those of us involved in solar in sunny Southern California generally think that we have it pretty good.  The climate is just about perfect for solar - and by that I mean the political climate, every bit as much as our abundant sunshine.  From the Governor, to the legislature, to the CPUC and the CEC, generally those forces support the growth of not just solar power in general, but distributed, on your own rooftop solar in particular.  But we become complacent at our peril - both to the jobs of those in the industry as well as the investment value of all of those solar installations out there.

A recent story from Columbia, South Carolina brought this peril to mind.  As portions of the state edged closer to the existing 2% cap on net metering installations, the legislature was working on a compromise to lift the cap,  allowing more residents the opportunity to install solar and take advantage of net metering.  The utilities had other ideas - from the Greenville News:

Deep-pocketed power companies outspent the solar industry nearly $3 to $1 as part of an intensive lobbying effort during an S.C. legislative session that included efforts to curb rooftop solar’s expansion in the state.
Electric utilities spent nearly $523,000 from January through May to hire more than three dozen lobbyists to advocate for them at the State House as lawmakers decided what to do about solar incentives.

Yikes.

The result of all that lobbying?  The effort to lift the net metering cap was defeated - and local solar companies are going to be laying off employees (if not closing altogether) while affected residents will either have to forego solar, or find it far less financially viable.

Solar Rights AllianceWe delude ourselves if we think that it can’t happen here.  Utility lobbyists are in Sacramento just as they are in Columbia, and the recent forced change to net metering 2.0 in SCE territory is a reminder that our progress is not guaranteed.

Which brings me to the Solar Rights AllianceWe have written about this important organization before, and will do so in the future.  But I wanted to use this post to show how we are putting our money where our mouth is.  Starting today, we are modifying our solar installation contracts to provide an opt-in checkbox for new clients to be signed up for the Solar Rights Alliance, with Run on Sun making a donation in their name to help support the important work of organizing solar clients statewide.

We are never going to be able to match the money coming from the utilities and their allies.  But what we do have is tens of thousands of happy solar owners all across the state.  If we can organize even a fraction of them, we will be able to speak directly to policy makers and let them know that the value of installed solar power systems must be protected.  That is a fight that we need to take on, and the Solar Rights Alliance (along with our wonderful trade association, CALSSA) is key to winning that fight.

05/30/18

  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!

04/13/18

  11:10:00 am, by Jim Jenal - Founder & CEO   , 2082 words  
Categories: All About Solar Power, Solar Economics, Residential Solar, Ranting

My Electric Bill is So High! Will Solar Help? Part 3: Evaluating Competing Solar Proposals

Editor’s Note: This is the third installment in our three-part series:
My Electric Bill is So High! Will Solar Help?  
You can read Part One, How High is High, here, and
Part Two, How Do I Find Someone to Trust, here.

With apologies to the Lovin’ Spoonful, eventually you have to make up your mind between those competing bids you’ve received, but how?  Let’s walk through the proposal evaluation process and see if everything that you need to see has been included!

What’s in the Proposal?

Solar proposals come in all shapes and sizes.  Some are very short – just a listing of what will be provided, a price, and a place to sign.  On the other end of the spectrum are proposals that are twenty pages long, most of it boilerplate about what is solar and how does it work, and what a great company this is.  But strip away the boilerplate and are they really giving you much information that is specific to your situation?

What were the inputs?

The old saying, GIGO: Garbage In, Garbage Out, applies to solar proposals too.  In this case, the inputs are your past energy usage, and a detailed site evaluation that looked at your service panel and your roof.  Omit any of those inputs, and the output is likely to be of dubious value, or worse, it will mask the true cost of installing solar at your home, leaving you exposed to costly change orders down the road when the contractor “discovers” something that should have been addressed at the proposal stage!

Your energy usage for the past year is the key input – without it you’re flying blind.  If you are in SCE territory, your potential installer should be asking for access to your  interval data.  For most residential clients, that is hourly usage measurements over the entire year, and that is important to accurately model your savings under now mandatory, time-of-use rates.  Where interval data is not available, monthly, or worse, bi-monthly billing records can be used, but they will not provide the granularity needed to see how the proposed PV system will actually operate to offset your daily loads.

Seasonal load profile comparison

Assuming that interval data is available – we ask our clients provide it through a secure service called UtilityAPI – it is the installer’s responsibility to properly analyze it to know how large a system you need.  As we mentioned in Part One, we use Energy Toolbase for our data analysis as it is the most authoritative tool on the market.  The chart above shows the average seasonal usage for one particular client as processed by Energy Toolbase from the raw interval data.  This shows the average hourly usage over spring and summer, with a very dramatic peak on summer weekends around 5:30 p.m.  Recall from Part One about “low-hanging fruit” – what you are seeing here is an excessive A/C demand that, if it can be addressed, would greatly reduce the size of the PV system needed for this client.

Ideally, this analysis takes place before the site evaluation so that the installer is able to advise the potential client about actions to be taken to reduce their overall usage, and thereby end up with the most cost-effective solution tailored to their needs.

Detailed equipment line items

One of the things that we see on competitors’ proposals that never ceases to amaze us is the total lack of detail regarding the actual equipment that is going to be installed!  It is as if the homeowner is expected to pay thousands of dollars for a generic solar power system – but you wouldn’t spend thousands on a generic car, would you?  Moreover, how can you assess the value proposition of a generic system?  A company that proposes a generic system intends to install on your home whatever is on sale that week.  Maybe you get lucky, more likely you don’t, but in either case, you simply don’t know, and that is no way to make a major investment.

Your proposal should have line items for all of the major components of your system: the solar panels, microinverters, racking, and installation costs.  And those items should be specific, down to the model being selected and the per unit cost.  Only that level of detail allows you to see what you are getting and for how much.

Utility savings analysis

Determining how much your proposed PV system will save you in Year 1 is the key to the entire analysis of the proposal, and it is a two-step process.  First, your historical usage data is analyzed against your current billing rate to determine what your energy costs will be over the next year.  There are a couple of assumptions built into that assessment, namely that both your usage and your billing rate will stay the same.  If you have been in your home for awhile, your usage last year is probably a pretty good predictor of your usage next year.  On the other hand, if you moved in rather recently, or made a major purchase like a new EV, that will skew your usage going forward.  Similarly, last year’s bills were predicated on the exact details of your billing rate structure in effect at that time – and those are subject to change without notice.  So look at what the proposal projects for your bill next year without solar, and see how that compares with last year.

The second part is the more important piece - assessing how  your bill will change now that you have added PV.  Here’s where things get complicated, and a tool like Energy Toolbase becomes essential.  The proposal should show a model of your past usage overlayed by the production of the PV system.

PV production overlayed on historical usage

As you can see in the graph above (click for a larger version), the darker blue is the historical usage (we are looking at two days in July), the green is the modeled production from the proposed PV system, and the pale blue is the net energy demand.  At the peak on the right, the PV system is producing 5.22 kW at a time when the historical demand was 11.95, meaning that the net demand from the utility is 6.73 kw – and that is the basis for what the client will be billed.  You can also see that there are periods in the morning when the system is producing more power that the client historically used, resulting in power being exported out to the grid – for which the client is compensated due to net metering.

This is the analysis that must underlie your savings analysis – anything else is simply guess work.

Cash flow analysis – payback over time

Part of any cash flow analysis is the cost of the transaction.  If you are making a cash purchase you know exactly what your transaction costs will be.  But if you are financing through the solar company, or heavens forbid leasing, those transaction costs may well be obscured, it not hidden altogether.  Make certain that you have all the information you need to determine exactly what that deal is going to cost you.

For the sake of discussion, we will assume that this is a cash purchase.  What other assumptions go into a proper cash flow analysis? To start, how long is the period of the analysis?  Ten years?  Twenty years?  Thirty years?  Beware of an analysis that simply says how much money you will have saved in the end, without calling out the period in question!  In our view, ten years is too short, and 30 years is too long.  But whatever the number is, make sure you are aware of it as you compare “total savings!”

Another key assumption is how much will utility rates go up over the lifetime of the analysis?  It used to be common to see rate escalators of 6-7% per annum, but there was no real data-driven basis for that number.  (In fact, long ago we used 6.7% based on a website that claimed that the California Energy Commission had published that figure.  But when we went digging for the source, we discovered it didn’t exist - there was just this circular linking of sites each claiming to have gotten this from the CEC!) 

Over time we have consistently reduced the value that we use for our models, so that now we are using 3%, which we think is reasonably conservative.  But this is really a matter of just throwing darts at a board, and no one really knows what that number will be. Keep in mind that for comparison purposes, you should be able to see what value was used, and the higher the number, the rosier the prediction!

PV systems degrade over time, and that output diminishment should be accounted for in the analysis.  Modern solar panels degrade less than 1% per annum (the LG panels that we use are around 0.5%), but in any event, make sure that is incorporated in the model.

Finally, the value of money in your hand today is, generally, worth more than money you will have at some point in the future.  How much more valuable is a function of the discount rate applied to those future savings.  If the model ignores that, your future savings are likely artificially high.  Again, no one knows what the right number is, but a proper model will account for it and allow you to know what you are comparing.

What’s in the Contract?

Strictly speaking not a part of the proposal, it is not a bad idea to ask to look at the contract before you pick a contractor.  Many solar contracts are very long, written in tiny fonts, with lots of legalese – all designed to make you throw up your hands and simply ask, where do I sign?  But slow down, friend, the devil may be lurking in those details!  Indeed, we have had clients who were ready to sign with another company until they looked at what was in the contract!

Ideally the contract should be written in plain English, it should clearly set forth what will happen, when, and how, and it should be even-handed.

An Important Caveat

Finally, it is important to call out what even the most carefully considered proposal cannot address - future uncertainty; in particular, what will utilities try to do, and what will the CPUC let them do!

Things outside of our control - CPUC & Utilities

If you follow this blog you will know that the solar industry is under constant assault from efforts by utilities – particularly the investor-owned utilities like SCE – to reduce if not altogether eliminate the economic value of adding solar.  Whether it is by lobbying for changes to the net metering rules (which just this past year imposed additional fees, charges, and mandated time-of-use rates), or designing utility rates that make solar production less valuable, there is a constant struggle behind the scenes to undermine the solar investment of thousands of California homeowners.  (And this is not at all limited to California – attacks on net metering and efforts to impose pernicious rate structures are a nationwide phenomenon.)

Things we can control - SolarCitiSuns & CALSSA

Fortunately there are a couple of entities out there that are working hard to preserve the value of going solar.  If you are a California homeowner with a solar power system, there is an organization specifically for you.  California SolarCitiSuns is perhaps a corny name, but its mission is crucial: to organize the political power of California’s thousands of citizens with solar on their homes or businesses, or anyone who wants to be part of advocating for a clean, renewable future.  If you have solar on your home or business, click here to join!   The investment that you are protecting is yours!

 And finally, solar companies, are you a member of the California Solar & Storage Association?  We are, and you should be.  Click here to join CALSSA today! 

Beyond that, rank and file solar workers – installers, designers, finance people, anyone whose livelihood depends on the solar industry – there is an action group that you can join, even if your company is not a CALSSA member!  Joining means that you will get alerts when a crucial vote is upcoming in Sacramento or San Francisco, and give you the opportunity to reach out and show your support for the industry that provides your livelihood.  It’s easy and important. Every solar worker in California – click on this link to join the CALSSA Action Network – the job you save will be your own!

So there you have it - everything you need to know about going solar – look forward to hearing from you soon!

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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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