Navigant Research Blog

Utility Customer Choice Coming to the UK Residential Solar PV Plus Energy Storage Market

— July 5, 2017

Two recent announcements foreshadow the emergence of the residential solar PV plus energy storage markets in the United Kingdom. Both E.ON and EDF Energy announced plans to launch solar plus storage programs. My colleague’s recent blog highlights the costs and self-consumption values of these offerings. I focus on how these announcements also exemplify three key drivers for the deployment of distributed solar PV plus energy storage:

  • Energy storage makes solar PV dispatchable. Energy storage addresses the greatest issue associated with solar PV: standalone solar PV systems only generate electricity when the sun is shining. Both E.ON and EDF Energy recognize that energy storage is a unique resource that can function as both generation (when discharging) and load (when charging).
  • Business and finance models are accelerating market adoption. Utility service vendors are now taking lessons from solar PV developers and finding simple, money-saving distributed energy supply and financing models that appeal to customers.
  •  The long-term value proposition for energy storage is strongest behind the customer meter. These offerings portend the possibility that E.ON and EDF Energy could add these solar PV plus energy storage installation to virtual power plant (VPP) software technology in the future to participate in ancillary services markets.

These new announcements, indicative of the drivers outlined above, create value for the utility customers and service vendors in three ways:

  • Residential retail electric choice customers can now access onsite backup power by means of a no-money-down option that can ramp to full capacity much faster than conventional resources for customer backup power.
  • By offering financing for these solar PV plus energy storage systems within the United Kingdom’s residential retail choice market, EDF Energy can now retain customers for a longer term than with traditional short-term, retail choice electricity supply contracts.
  • These types of battery energy storage-enabled distributed energy resources systems can create the potential for a future dispatchable VPPs. VPPs can maximize the grid value of self-generated solar electricity by customers to allow grid operators to minimize carbon-intensive peak energy generation and manage potential grid edge distribution system challenges.

Navigant Research recently highlighted global residential solar PV plus energy storage drivers in detail in our report titled Distributed Solar PV Plus Energy Storage Systems. Given these recent UK market developments, Navigant Research anticipates that more of these types of innovative, customer-focused utility services offerings will come to the marketplace.

 

The Energy Cloud: Is Australia Supplanting New York as Global Leader?

— March 13, 2017

The fact that Audrey Zibelman is leaving her top position at the New York Public Service Commission to become CEO at the Australian National Energy Market (AEMO) is just one sign that the world’s eyes are increasingly turning to the land down under for inspiration and innovation when it comes to an emerging Energy Cloud future.

The slow pace of New York’s Reforming the Energy Vision (REV) process should really come as no surprise. Trying to create new business models for an electric utility industry that existed as a monopoly for over a century is not easily done within just a few years. Zibelman was the perfect person to jump-start this effort, given her previous posts at Viridity Energy and PJM. Now someone else will need to finish the job.

A New Playground

In what can be seen as symbolic shift, Zibelman’s new job in Australia reflects something keen observers have noted for quite some time. Australia—once seen as a backwater that only provided fertile ground for off-grid microgrid innovation—is now also emerging as a playground for new business models spanning the entire nanogrids-microgrid-virtual power plant (VPP) spectrum.

This continent continues to lead with major innovations in remote microgrid management, as evidenced by the forward-looking work of utilities such as Horizon Power. Yet, what is just as fascinating—if not more so—are multiple projects pushing the envelope in new business models that epitomize the type of innovation occurring within the VPP space. Consider these two examples:

  • AGL Energy Limited, partnering with Sunverge of San Francisco—a leading energy storage and VPP firm—announced a 5 MW VPP last year that will aggregate 1,000 homes equipped with solar PV panels and batteries. The $20 million project will allow homeowners to save on their electricity bills while also contributing valuable peaking capacity to the grid in South Australia.
  • A new Distributed Energy Exchange is being created that will help facilitate similar programs on an ongoing basis, allowing for widespread adoption of VPPs. The new exchange is designed to tap spare capacity, especially from hybrid solar PV/energy storage nanogrids, that can then contribute to the creation of VPPs. Among the leading innovators behind what has been described as a new digital marketplace is Greensync.

At present, roughly 16% of Australian power supply comes from solar PV, a much higher percentage than New York or even California. The distributed battery storage market also grew 1,000% between 2015 and 2016, according to a recent report, with total capacity representing 50 GWh.

Microgrid Capacity

According to project data collected in Navigant Research’s Microgrid Deployment Tracker, Australia ranks third in terms of total project capacity (operating, under development, and proposed projects). Within the United States, New York ranks fourth in terms of identified capacity, but first in terms of total number of projects. Of course, this is partially a result of the over 80 projects proposed under the New York Prize program, of which only a portion will actually come online.

Top 10 Countries by Total Microgrid Power Capacity, World Markets: 4Q 2016

(Source: Navigant Research)

Curious about the details of microgrids in Australia or New York? Navigant Research now offers a data services platform where a client can custom sort data for the projects in any other part of the world. Data can also be sorted by technology—such as microgrid with lithium ion batteries—or by vendor, segment, or country.

 

Plug-and-Play Microgrids Are Building Momentum

— February 17, 2017

GeneratorThe concept of plug-and-play microgrids is picking up momentum. But like the term microgrid itself, plug-and-play means many different things.

To a software company such as Spirae, the plug-and-play concept is all about enabling software (the topic of a recent Navigant Research white paper and webinar). According to Spirae, configurable microgrids and the need for standardized projects of similar scale are necessary for the microgrid market to scale up. The diversity of services a microgrid could provide hinges on flexible software configurations.

In a similar vein, Blue Pillar is marketing itself as an Internet of Things (IoT) solutions provider. It was ranked as the top company globally in terms of identified microgrid deployments in Navigant Research’s Microgrid Deployment Tracker last year. The company claims it can bring a microgrid online in a matter of months thanks to its rich library of data pertaining to different types of distributed energy resources (DER).

Many Different Labels

Interestingly enough, to software companies such as Spirae and Blue Pillar, the term microgrid is too limiting for what they do. For Blue Pillar in particular, its controls platform spans smart buildings to virtual power plants (VPPs) and could also be considered simply a DER management system (DERMS) solution. As Spirae has argued, these different labels—microgrid, IoT, VPP, DERMS—really don’t matter from a software perspective. The key to unlocking value that may be hidden within DER is a shift away from complex customized engineering to a more standardized and modular approach. Think like Uber, but deliver like Comcast.

To ABB, a plug-and-play microgrid is instead a hardware offering in the form of a containerized solution. These microgrids, primarily designed for rugged, off-grid applications, can be put together like Lego blocks and reach a scale of up to 5 MW. Beyond that size, ABB admits the microgrid becomes overly complex, requiring customized engineering.

ABB is fairly unique among the long list of multinationals seeking opportunity in the microgrid space with both a distributed controls approach and a focus on off-grid projects, where the company believes the value proposition is clearest. For example, in Australia or Alaska, the business case for renewables does not depend upon renewable portfolio standards, net metering, or carbon reduction targets.

Increasing Modularity

Taking the concept of modularity in microgrids even further from a hardware perspective is startup ARDA Power, which extolls the virtues of direct current (DC) microgrids. The beauty of DC is that not only does it allow a project design to reduce power conversion devices, which simplifies design and islanding, but it is also much easier just to plug in other DC devices such as solar PV and batteries, two technologies poised to increase as a portion of the microgrid resource mix in the future.

The first company to offer a plug-and-play microgrid was Tecogen with its combined heat and power units. It recently upgraded, with the ability to plug in solar PV or batteries on a DC bus, creating a hybrid alternating current (AC)-DC microgrid. Yet another company touting a plug-and-play microgrid solution is SparkMeter, which offers low-cost but incredibly robust metering solutions for energy access solutions in the developing world. Ironically enough, one can make the argument that metering is even more important in these kilowatt-scale systems, where payment for energy services is vital for business cases.

From hardware to software, AC to DC, combined heating and power to smart meters, the plug-and-play concept appears to be all the rage in the microgrid space.

 

Distributed Energy Storage Deployments Driven by Financing Innovation, Part 2

— February 13, 2017

As highlighted in the previous post in this two-part series, the development of standardized power purchase agreement contracts by the National Renewable Energy Lab’s Solar Access to Public Capital Working Group has contributed to the continued growth of at-scale solar PV financing. Building on those solar PV standardization successes, Navigant Research is witnessing the development of new energy storage business models and financing instruments driven in part by contractual standardization. Navigant Research recently explored these new energy storage financing instruments in a recent research brief, Financing Advanced Batteries in Stationary Energy Storage.

A second type of standardized contract has emerged to help finance behind-the-meter distributed battery energy storage systems (BESSs). This new standardized contract focuses on aggregating BESS assets across multiple sites as a virtual power plant (VPP) to reduce energy demand.

Demand Response Energy Services Agreements

A demand response energy services agreement (DRESA) is typically executed with a local utility responsible for managing load on the distribution system by means of VPP technology. In this case, the utility compensates a third-party VPP owner for system availability (capacity) and actual DR energy storage services provided (performance). With a DRESA, the local utility can utilize the VPP for a defined duration for grid DR. But in most cases, the energy storage system owner or operator also promises to provide demand charge costs savings to hosts by means of a demand charge savings agreement (DCSA).

Advantages and Challenges for DRESAs

Key advantages of financing distributed BESS VPPs using a DRESA include:

  • The ability to deploy reliable DR assets in local power markets without upfront capital expenditures by either the local utility or the commercial and industrial (C&I) host facility
  • The ability for utilities to deploy reliable DR assets to optimize the local distribution system without the need to own and operate new storage assets

Key challenges facing the financing of BESS VPPs using a DRESA include:

  • The ability of BESS VPP software platforms to evaluate historical building load profiles and site-specific tariff requirements across large portfolios of C&I host sites to predict VPP deployment scenarios and project revenue.
  • The hardware/software complexity involved with integrating building load, onsite distributed generation, and building control across large portfolios of C&I host sites into VPP deployment strategies.

Standardized Approach to Quantifying Complexity, Risks, and Revenue

One can only imagine the complexity required to be addressed in these types of standardized agreements and technology deployment scenarios. For example, for a DRESA VPP application, the highest value will often be for the energy storage software system to leverage automated DR building efficiency technology to aid in reducing building load. Quite simply, installing and deploying this technology with some degree of battery energy storage capability will likely have a lower overall installed cost than deploying only larger batteries and inverters to do all the work.

Navigant Research can point to two examples where these issues have been sufficiently addressed, resulting in BESS VPP financing commitments:

As referenced in the previous post in this blog series, Navigant Research anticipates that standardized contracts such as DCSA and DRESAs will lead to the kind of financing innovation necessary to drive the deployment of distributed energy storage technology.

 

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