Generac Grid Services Blog

There is no doubt that we are facing real problems with climate, fossil fuels and carbon emissions, but as we look to solve these problems, I think that we need to look carefully at the underlying facts, rather than focusing (as some do) on the short-term elimination of fossil fuel.

1. The biggest sources of emissions in the US are the generation of electricity from coal and transportation-related emissions (60% of which is for personal transportation). These two sources are responsible for more than 2/3 of total emissions.  Canada is only slightly better, in that its electric system generates almost 60% of total energy with hydro, and nuclear is a large contributor to clean electricity as well.  Canada’s petroleum industry ranks second, behind transportation.
2. Electricity provides less than 20% of total energy, and the remainder is almost all fossil fuel. The average person gets fuel in three forms: electricity, natural gas and transportation fuel (gasoline or diesel fuel).  Any major reduction in the direct delivery of fossil fuel will be expected to be replaced with electricity, and that may be a big challenge, given the fact that the electric grid at present delivers only about 20% of the total energy.
3. Many people seem to think that if they can convert their current electricity use to solar energy, the problem will be solved. They tend to forget, however, about heating and transportation fuel. In most cases, the fossil fuel energy is far larger than the electrical energy delivered.
4. I keep hearing that the problem is someone else’s fault – blame India, China, the oil industry or the government. We all need to look in the mirror – and recognize who the big users are.  The fact is that North Americans are among the largest users of energy per capita in the world.  As “Pogo” would have said, “We have seen the enemy, and it is us!”

There are two areas to look at: the supply of energy and the use of energy.

There’s a good reason that traditional demand response (DR) programs only ask C&I customers to curtail energy usage a few times each year. Traditional DR is painful. It’s a no-holds-barred, shut down that conveyor belt, stop production, turn off the air conditioner and send people home kind of deal. It is, by definition, disruptive. And, frankly, not every organization can afford to have its business endure even a few interruptions a year.

But, DR doesn’t need to be disruptive, and to get the most out of today’s demand management technology, we really need to think of curtailment events as a day-to-day method of grid support instead of troublesome headaches that must be painfully tolerated.

That’s what one East Coast utility is doing with the Symphony by Enbala^TM distributed energy resource management platform (DERMS). By aggregating small amounts of response from many different devices in one site, a promising pilot is showing that curtailment can be both effective and invisible to customers.

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.

This blog was co-authored by Enbala and the Rocky Mountain Institute (RMI). Enbala extends its heartfelt thanks to the Institute for the insights and effort that went into creating this piece. 

INTRODUCTION:

Demand flexibility - allowing household devices like HVAC systems and smart appliances to interact with the electric grid in response to real-time price changes - can save customers money and lower the overall cost of electricity. The Rocky Mountain Institute's recent paper, The Economics of Demand Flexibility, analyzed the economics of making common household loads controllable and responsive to electricity price signals. The Institute found that just making two devices flexible, i.e., smart thermostats that could flex an HVAC system’s output up or down by 2 degrees and smart water heaters that could change the timing of water heating, could lower system-wide peak demand by eight percent and save $10–15 billion in costs to the grid annually. 

Every demand response program, every virtual power plant, every distributed energy resource (DER) management system needs one thing to be successful: customers who are willing to hand over their DER controls. Given that participant recruitment is such an important factor in a DER management program’s success, it can’t hurt to bone up on the art of persuasion.

That’s easy to do with The Small Big, a business book that looks at several different studies on how to coax others to do the things you want them to do. Its authors include Robert Cialdini, who wrote Influence, a business psychology text that has been on Fortune’s list of the 75 Smartest Business Books for years. Influence boils down the art of persuasion into six key motivators.

Given the proliferation of renewables — plus the dramatic growth rates predicted for solar and wind power over the next year or two — plenty of people are looking to storage as the way to save us from renewable intermittency. But, storage is pricey. And, given the potential for long stretches of inclement weather that knocks solar PV output down or fails to turn the wind turbines, the storage we have available today is unlikely to be sufficient for the power grid’s needs.

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.