Enbala Blog

Adding PV to the grid: It takes more than firming

By Enbala on Oct 19, 2016 9:20:00 AM

If you’re like most people who’ve gone to a conference lately – or read this blog from its inception – you’ve already heard warnings about what could happen to grid voltage and stability when stray clouds waft over neighborhood solar arrays and block PV generation. The sudden drop of renewable power is what many people point to as the key challenge of variable generation resources.

After all, that’s why utilities are looking for ways to “firm” renewable generation, which is the process of backing variable resources up with some combination of fast-ramping power or demand-side management to jump in when power production subsides. But, while loss of power gets most of the attention, over-production is an equally daunting challenge for grid operators.

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Topics: DERs, DERMs, Solar, photovoltaic, renewable firming

DERMS: Coming Soon to Your Utility’s IT/OT Convergence

By Malcolm Metcalfe on Sep 8, 2016 11:38:22 AM

Last year, analysts at Gartner placed IT/OT convergence on their Top-10 list of trends affecting the utilities industry. Actually, it’s been in progress for nearly a decade but, now more than ever, IT/OT integration looms as a crucial utility move. What’s more, it is factors outside utility walls that are rousing such urgency. What are they? Look around your neighborhood. If you see a lot of rooftop solar panels, some of those factors are sitting right in front of you.

What’s more, GTM Research forecasts a 94 percent increase in new PV installations in the U.S. during 2016. Worldwide, Navigant Research says, “Annual installed capacity across the global distributed energy resource (DER) market is expected to grow from 136.4 GW in 2015 to 530.7 GW in 2024, representing $1.9 trillion in cumulative investment over the next 10 years." 

What does this have to do with IT/OT convergence?

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Topics: IT/OT, IT/OT Convergence, DERs, DERMs, distributed energy resources, Distributed energy resource management, renewable firming, smart inverters, Solar energy, energy aggregation

Load, the oft-overlooked distributed energy resource

By Enbala on Aug 17, 2016 12:00:00 PM

INTRODUCTION:

Researchers at DNV-GL did a fine report for the New York Independent System Operator a few years ago. Titled A Review of Distributed Energy Resources, it offered this definition of the various distributed energy resources (DERs) examined in the report:

“… DER technologies are defined as ‘behind-the-meter’ power generation and storage resources typically located on an end-use customer’s premises and operated for the purpose of supplying all or a portion of the customer’s electric load. Such resources may also be capable of injecting power into the transmission and/or distribution system or into a non-utility local network in parallel with the utility grid. These DERs include such technologies as solar photovoltaic (PV), combined heat and power (CHP) or cogeneration systems, microgrids, wind turbines, micro turbines, back-up generators and energy storage.”

Granted, the research team did acknowledge that some sources – including the New York Public Service Commission – included customer load in its list of DERs, but load wasn’t one of the DERs covered in the report. That’s too bad because load can hold its own against other DERs for a variety of grid-supportive purposes.

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Topics: DERs, DERMs, distributed energy resources, flexible load, grid balance, fast ramping, demand management, voltage management, regulation service, process storage, renewable firming

Sustainable Firming: Use DERs to Back Renewables

By Enbala on Feb 17, 2016 9:46:44 AM

For anyone who worries about global warming and wants to see more renewables integrated into our grids because of it, demand-side management may be about the greenest choice there is. After all, carbon dioxide accounts for 82 percent of greenhouse gases, according to the U.S. Environmental Protection Agency. And utilities are the biggest carbon polluters, responsible for some 40 percent of carbon emission, says the same source.

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Topics: DERs, renewable firming, demand management, renewable energy, clean energy

Renewable Firming with Demand Side Resources? It Can Be Done!

By Enbala on Jan 21, 2016 10:28:48 AM

 

Anyone who thinks distributed energy resources (DERs) can’t be used for time-sensitive applications like renewable firming should have a look at this article about how New Brunswick Power was able to do just that. The NB Power project was the first time load management provided renewable firming for a Canadian utility. Serving some 394,000 residential, commercial and industrial customers, NB Power is targeting 40 percent renewable generation by 2020. Firming for these variable energy resources must be in place quickly, and the project described in the article shows how the utility proved that demand-side resources could do the job.

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Topics: distributed energy resources, demand side management, renewable firming, frequency regulation, wind energy

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