Negative power prices due to wind power’s subsidy

Michael Giberson On the NYTimes.com Green blog, Matthew Wald reports on “An argument over wind.” The issue is the scheduled-to-expire Production Tax Credit for wind power. As previously mentioned here, former PTC-supporter Exelon Corp. has come out against the PTC extension. It parted ways from the American Wind Energy Association, of which it had long … More Negative power prices due to wind power’s subsidy

Negative power prices in RTO and bilateral power markets

Michael Giberson The Energy Information Administration has published a pair of short posts on negative power prices, one looking at negative prices in bilateral power markets in the Pacific Northwest and another looking at negative prices in RTO markets across the country. Dan Haugen has a related story at Midwest Energy News. Negative power prices may seem counter intuitive, … More Negative power prices in RTO and bilateral power markets

Negative Power Prices in ERCOT West: 2009 and 2010 through September

Michael Giberson Below are charts showing data on ERCOT West zone power prices for the 2009 and for 2010 January-September with a focus on negative prices.  The charts were derived from data provided through the ERCOT website, on their “Balancing Energy Services Market Clearing Prices for Energy Annual Report” page. These charts were prepared in the … More Negative Power Prices in ERCOT West: 2009 and 2010 through September

Top 10 longest periods with consecutive negative power prices, ERCOT West

Michael Giberson ERCOT recently set a new record for consecutive pricing intervals below $0/MWh for balancing energy market prices in the ERCOT West region: 39.25 hours of negative prices.  The episode started at 7:45 PM on Saturday, November 6  and the negative prices continued until 11:00 AM on Monday, November 8.     The previous record … More Top 10 longest periods with consecutive negative power prices, ERCOT West

Negative power prices in ERCOT West: Charts for Jan-June 2009

Michael Giberson Below are three charts showing data on ERCOT West zone power prices for the January-June 2009 period.  The charts were derived from data provided through the ERCOT website, on their “Balancing Energy Services Market Clearing Prices for Energy Annual Report” page. These charts were prepared in the same way, including use of the … More Negative power prices in ERCOT West: Charts for Jan-June 2009

Negative power prices in ERCOT West – 2009 so far

Michael Giberson If you thought power prices in ERCOT’s West region were interesting in 2008, keep an eye on the prices in 2009. (For background see my earlier post on negative prices in ERCOT West for 2008. Note on updated data here.) Late 2008 saw a few developments of note for the region: Almost 2000 … More Negative power prices in ERCOT West – 2009 so far

Frequent negative power prices in the West region of ERCOT result from wasteful renewable power subsidies

Michael Giberson What is with all of the negative power prices in the West region of ERCOT? In the first half of 2008, prices were below zero nearly 20 percent of the time. During March, when negative prices were most frequent, prices were below zero about 33 percent of the time. After mostly taking the … More Frequent negative power prices in the West region of ERCOT result from wasteful renewable power subsidies

Smart grid and renewables interconnection (Part 4 of 5)

Lynne Kiesling One of the reasons why smart grid is generating so much interest right now is its ability to enable the integration of renewable energy into the electric power network, leading to a broader generation portfolio and potentially beneficial carbon implications. Lots of the discussion of smart grid in policy and media (including places … More Smart grid and renewables interconnection (Part 4 of 5)