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Published on August 26th, 2013 | by Zachary Shahan

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Sunrun Supports Net Metering, Not Feed-in Tariffs or Value Of Solar Tariffs

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August 26th, 2013 by Zachary Shahan
 

[Important Update] Also see: Tax Threat To Solar Homeowners With Feed-in Tariffs or Value Of Solar Tariffs

Originally published on Solar Love.

It’s well known that feed-in tariffs have supported most solar power growth across the world. It’s also well known that very few places in the US offer a solar feed-in tariff (FiT). I was recently contacted by someone who had started a petition pushing for a solar feed-in tariff in California. I went ahead and published a quick article on the petition over on CleanTechnica.

Quite frankly, aside from any commentary on the details of the proposed policy, I am a firm believer in the need for more citizen action supporting the growth of solar power. We need more people to email, call, and talk in person with their political representatives to push for more solar power. We need more people to get motivated about this topic, as citizens were about civil rights, women’s rights, and the need to ban harmful pesticides. But, yes, the details of the policies we push for are of course important, and we should focus our efforts on the strongest solar policies. In California (and other places in the US), is a FiT really the best way to go?

Interestingly, following the above-mentioned article, the folks at Sunrun, “the nation’s #1 home solar company,” reached out to me to have a discussion about why they aren’t a fan of the petition, nor a push for feed-in tariffs in the US in general. Rather, they’d like to see a continued focus on net metering.

Of course, hearing Sunrun’s take on this was appreciated. And I was intrigued that it was so opposed to a FiT push that it would reach out about that. Is there really any chance a California-wide FiT could be passed? (I didn’t think so.) How would a FiT policy threaten Sunrun’s business? I got to speak with Sunrun’s Director of Government Affairs, Walker Wright, and Sunrun’s Manager of Public Policy, Susan Wise, about these matters.

The main opposition to feed-in tariffs was expressed in the initial email from Susan: “There are a few things about them — mainly that they put a ceiling on solar deployment and allow monopoly utilities to maintain control over how consumers get electricity.”

Of course, with every policy, there is room for manipulation. The devil is in the details, as they say. In the case of the US, and even the state of California, the concern seemed to be that the management of such details is so distributed that it’s impractical, and that FiTs are so open to highjacking and manipulation by the utility industry and its allies that they seem like more of a risk than another helpful solar incentive.

Susan and Walter see net metering as the best and most fair policy for both homeowners and the utility. Net metering policies are in place almost all across the US and were set up in a decent way. Regarding the petition we shared, the main concern was that “it distracts from what’s really needed and what works, which is the net metering policy that is in place and successful today, and should remain in place,” as Susan wrote. “It’s the cornerstone policy for solar growth and provides a critical framework that gives consumers fair compensation (full retail credit) for the solar they put back on the grid. NEM is what will allow solar adoption and the solar economy to continue to expand.”


The claim that it gives fair compensation is actually debatable. Utilities debate it, trying to reduce the amount they pay to solar homeowners, but much more realistically, it has been shown to be too low by researchers who have calculated the myriad social, environmental, and grid costs and benefits that solar provides. I brought up the potential growth of Value of Solar Tariffs (VOSTs), which are supposed to more intricately calculate “fair compensation.” Sunrun’s concern, as with feed-in tariffs, is that the assumptions used to determine VOSTs would largely be set by anti-solar utilities, and the value would be less than what simple net metering policies offer. Indeed, I did note that the VOST used in Austin is considerably less comprehensive in its inclusion of solar benefits than the one that came out of a report for the Mid-Atlantic Solar Energy Industries Association (MSEIA) and the Pennsylvania Solar Energy Industries Association (PASEIA).

So, as with FiTs, the concern was that they would stifle solar growth. Here’s a full response from Sunrun:

  • Net metering is the only path forward if the objective is to give solar deployment a chance to meet is technical potential.

  • The VOST concept fundamentally moves rooftop solar from a behind the meter policy (BTM) to an in front of the meter policy (FTM) - an incredibly important distinction.

  • Moving rooftop solar in front of the meter gives the utility the ability to control/throttle future market development.  They will use this to limit the market because, at the end of the day, rooftop resources will compete with their central station resources.  They could either say “we don’t need any more generation resources – we’ve got plenty because our coal plants have years of life left on them….so we are only going to allow X MW of VOST to interconnect this year,” or they could drastically reduce the value of the tariff to undermine future deployment and maximize the financial performance of their generation portfolio.

  • In contrast, NEM is a BTM (behind the meter) policy.  The only two throttles on solar deployment in a BTM policy context are 1) consumer choice/demand (we know this to be incredibly strong for solar) and 2) technical integration in terms of interconnecting with the grid, and we are far away from even having that discussion at this point.

To further support the home solar company’s perspective on these important policy issues, Susan connected me with the Managing Director from Renewable Analytics, Dirk Morbitzer, who is a solar industry veteran and a native of Germany (where the country’s world-leading solar FiT basically grew solar power into the fast-growing, disruptive powerhouse that it is today).

Dirk offered up this extensive comment:

I think that Feed-in-Tariffs make sense for markets that have relatively low system output (in kWh per kW) and where utility electricity prices are low.

In markets that have high electricity prices (such as California) and a high kWh system output (as almost all of the US has compared to Germany) than Net Metering has significant advantages.

As regions in the US with high PV system output also have a high usage of Air Conditioning systems, there is a strong correlation between peak power usage (air condition) and peak solar production. This correlation provides a significant benefit to the utility companies that would otherwise have to contract (expensive) peak power generation.

Distributed Power Generation allows to dimension the grid infrastructure differently — depending on the power usage profiles of different customer groups.

Net Energy Metering also avoids the issue of overbuilding system sizes — something Germany has experienced over the last years.

With a FIT every system owner maximizes profits — e.g. build the maximum system size.

With annualized NEM, the system size is limited to the maximum energy use of that building — e.g. there is no incentive to build a system with maximum output, but size the system to the actual energy need.

The argument that NEM customers are not paying their share of the grid is a very interesting one — as NEM customers in most cases still buy some electricity from the grid — just a (significantly) reduced volume. They behave as if they conserve a large part of the previously used electricity.

The argument that anyone with a PV system should pay a grid connection or grid usage fee is the same as claiming that anyone who conserves water should pay a water system connection fee (base fee) as a penalty for conserving water.

Some very interesting comments. One in particular stands out for its similarity to a criticism of FiTs and VOSTs put forward by Susan above. This quote I’m referring to: “With annualized NEM, the system size is limited to the maximum energy use of that building.” In other words, just like a cap could be set on FiTs and VOSTs, a cap has already been set on NEM. People who go solar who might very well want to maximize the use of their roof and put as many solar panels on it as possible, can’t do so if that would exceed the maximum energy use of that building.

Yes, there are drawbacks to that maximization of rooftop space, but given the urgency and speed with which we must deploy solar power to help deal with the global warming crisis we face, I think the need far outweighs any downsides. That extra solar power from people who have already decided to go solar might be considerable. And, to reiterate, this is yet again an instance of the details being set up in a way as to limit rooftop solar power growth.

All in all, what’s my take on all of this?

1- I don’t think a statewide FiT really has a chance of being passed, and certainly not a nationwide one. But I’m still supportive of anyone who wants to push for FiTs. As I said above, we need people to get more heavily involved in pushing for strong solar policies. If FiTs get some people excited and active, that’s a great step forward. Perhaps from there they will also adopt or switch to a focus on other policies, like net metering. Also, as much as it is indeed true that the details of a FiT policy could make it worse than net metering, the details could also make it stronger.

Taking a US example, LA’s feed-in tariff stimulated a flood of solar power applications. The incentives were clearly attractive. Unfortunately, a low cap will result in a much smaller number of projects being built than were submitted. Will many of the solar projects that don’t get awarded a FiT contract end up getting built anyway? Will the disappointment or the hope for program expansion kill the projects or put them in permanent limbo? Would the LA solar market be better off without this policy? It’s hard to know, but this does give some backing to Sunrun’s FiT concerns.

2- Since Sunrun is more involved in the solar legislation arena in California, I’d probably defer to its expertise on the desire for net metering over a FiT. Though, I also wonder if perhaps a FiT would threaten the solar leasing model that brings Sunrun most of its customers. The current policies are a great support to the solar leasing model. A statewide FiT? Maybe not…

3- As a bit of an idealist, I’d love to see VOST policies adopted that really pay solar owners for the net value of the electricity they produce. As a bit of a realist, I know that will never happen in the majority of locations, that getting enough support and involvement from US citizens and nonprofits to make that happen is highly unlikely in the majority of cities, counties, and states. So, while a great policy model in theory, perhaps VOSTs are best left on the research table.

4- Net metering definitely warrants continued support, expansion, and strengthening. I am happy to see Sunrun so involved in that side of things… of course, it’s more than logical for the company to be so involved — net metering is a huge, non-subsidy support to the solar industry.

If you’ve made it through this entire article, I assume you are an informed and thoughtful solar power lover. What are your thoughts on the topics above?

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About the Author

spends most of his time here on CleanTechnica as the director/chief editor. Otherwise, he's probably enthusiastically fulfilling his duties as the director/editor of Solar Love, EV Obsession, Planetsave, or Bikocity. Zach is recognized globally as a solar energy, electric car, and wind energy expert. If you would like him to speak at a related conference or event, connect with him via social media. You can connect with Zach on any popular social networking site you like. Links to all of his main social media profiles are on ZacharyShahan.com.



  • Anon

    Also… Dirk is severely mischaracterizing the incentives of FiTs vs. NEM.

    In a NEM regime you have an incentive to size your system to deliver 100% of your annual usage so that you cancel out your bill. If you design the system right you’ll get retail value for all the solar electricity you make. NEM systems on inherently oversized and they lean heavily on the grid. Things wouldn’t work if everyone on a circuit sized to the incentives provided by NEM. You don’t have an incentive to oversize under the current FiT in Germany – you certainly used to but that time has passed. In Germany you actually have an incentive to undersize your system because your goal isn’t to make as much electricity as possible. Your goal is to use as much electricity that you produce as possible. If you use the electricity you capture retail value whereas if you sell it you only get the FiT which is currently 14.8 cents/kWh for sub-10kW systems. Depending on how you do the calculation 14.8 cents/kWh isn’t much higher than your production costs with cover a range of 10 to 15 cents/kWh depending on a wide variety of factors.

    Don’t trust SunRun. They’re feeding you bad math.

    • Bob_Wallace

      FiTs higher than retail price can do a lot to build an installation industry and drive prices down.

      If you can install and sell at a sweet profit then most people are going to want to maximize that profit. They’re going to put pressure on installers to keep the cost minimal.

      And a lot of people seeking those profits will create a lot of demand which brings players into the market early, then supports the best via volume work as the industry matures.

      That, I think, is how Germany drove their solar capacity high so rapidly and brought them to the place where their average system price is almost half ours.

      Our system lacked the motivation of short term significant profits.

  • Anon

    The reason why SunRun is against FiTs and VOSTs is that they see these programs as competition. If you get compensated for your production you can potentially be classified as a business. If you are classified as a business you can depreciate the value of your PV system. You may only get to use linear or declining balance depreciation but you could potentially get to use Accelerated versions. Solar advocates don’t think about depreciation much but when you put the numbers in a spreadsheet you can immediately see the financial benefits. You lower your production costs by 25 to 30%. That’s a chunk of change.

    To repeat… If we had a VOST or a FiT residential solar systems could be depreciated. That would swing the balance in favor of personal ownership over third party ownership. This undercuts SunRun’s business model.

    You have to remember who SunRun is. These are the same guys that lobbied against PACE. They’re cheeky monkeys. They’re not idealists looking to spread solar in an optimum manner. They’re a business looking to spread solar in a manner that makes them as much money as possible.

  • JamesWimberley

    Sunrun ¨ … they [FITs] put a ceiling on solar deployment …¨
    Only in tentative US experiments. National FITs in Europe follow the German model of no capping and regulating the volume by frequent downward adjustments.
    The key points are no capping, tranaparency, predictability, and a right to sell. Both net metering and FITs are adapting to the low cost of solar and the issue of paying for grid integration. Germany deals with these within FITs by setting them below the retail rate. With net metering, you have to go the VOST route. Either way, it´s inevitably become a battle with incumbent fossil generators.
    Solar and wind advocates should spare a thought for batteries, CSP and geothermal. They deserve a premium price for dispatchability, perhaps through a capacity market. (Very soon, homeowners wil be deciding about top-up batteries themselves.) Gas will also claim this premium: the argument for not paying it is the climate.

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