Tag Archives: demand response

Smart grid already in use due to heat waves

So if heat waves already require spot buys of electricity at high prices and is already enabling a market in demand responses to bring down, even while most electricity in the U.S. still comes from big baseload plants such as coal, nuclear, natural gas, and hydro, why is Southern Company saying we have to wait on a smart grid to deploy solar and wind energy?

This is from an EnerNOC Press Release of today that is all over the net:

…on Thursday, June 21, EnerNOC was dispatched by eleven grid operators and utilities across the US and Canada, including eight in Pennsylvania and New York, largely in response to a record heat wave across the northeast and mid-Atlantic regions that put strain on the grid and drove real-time energy prices in some regions to over $1,500 per megawatt hour, approximately 60 times higher than the previous week’s average prices. Demand response reduces the need for utilities and grid operators to procure additional supply at such high prices both by reducing overall demand on the grid and by targeting reductions in particularly constrained areas.

So demand response is energy conservation through energy distribution efficiency.

Well, maybe demand response duing that heat wave was on a small scale. Or not:

“Nearly 1,200 commercial, institutional, and industrial energy users in Pennsylvania, New York, Vermont, Ontario, and other constrained regions responded to Thursday’s dispatch, providing valuable capacity to the grid that helped to stabilize prices and reduce system strain,” said Tim Healy, Chairman and CEO of EnerNOC. “Our DemandSMART application, which streams real-time energy data from thousands of sites, showed demand quickly drop from the grid as our network was activated and allowed our customers to see the contribution they were making to grid reliability and reduced prices.

So sure, this is a press release from the company that’s doing this electricity dispatch. But it’s verifiable, starting with the customer company contacts in the press release.

FERC Chairman Jon Wellinghoff pointed out years ago that Continue reading →

FERC and energy demand response

Beyond a smart grid to mix and match the supply solar and wind to get rid of any need for new coal or nuclear plants, as FERC Chairman Jon Wellinghoff recommended three years ago, FERC also has plans to mix and match demand. Energy customers can volunteer to shut off their air conditioners or clothes dryers automatically if there’s not enough supply. This could facilitate adding solar power, by basically acknowledging that it may not always supply a fixed capacity.

Todd Griset wrote for law firm PretiFlaherty 23 April 2012, FERC seeks demand response standards,

Demand response, an innovative strategy to ensuring the integrity of electric grids, is growing in popularity, prompting federal regulators to consider standardizing how demand response performance is measured.

Managing an electric grid entails ensuring a constant balance between electric generation and customer demand for electricity. As customer demand rises, grid operators have traditionally called on more and more generating units. In most markets, grid operators dispatch the lowest-cost units first to keep overall costs down. As a result, generating units needed to meet peak demand tend to be more expensive than baseload generation. Many peaking units also emit more pollutants per unit of energy than baseload units.

In a demand response program, customers can volunteer to be available to reduce their load during times of peak demand. When done right, this reduction in customer demand can play much the same role as dispatching additional generation, but at a lower cost in dollars and environmental impacts. Energy efficiency resources can also play a similar role.

The U.S. Congress and the Federal Energy Regulatory Commission have both recognized that demand response can be a decentralized, crowd-sourced alternative to peaking power plants. Utilities and regional transmission organizations across the nation are implementing demand response programs.

Across the nation…. How about it, Georgia Power, and Georgia EMCs? How are your demand response programs coming?

-jsq