Editing Stephentown, New York (section)

===Stephentown Spindle===
Pursuant to Section 68 of the [[New York State Public Service Commission|Public Service Law]], Stephentown Regulating Services LLC (SRS) (now operating as Stephentown Spindle LLC (SS)) was granted a Certificate of Public Convenience and Necessity for a 20-[[watt|megawatt]] (MW) [[flywheel]]-based [[energy storage]] facility in 2009. It went in-service in 2010. There are 200 flywheels set within 20 pods on 5-acres that spin at high rates of speed (8,000 rpm to 16,000 rpm) storing energy as [[rotational energy]]. Each flywheel weighs 5 tons. The flywheels are energized by and discharge their energy into the New York State transmission system.<ref>{{cite web|url=http://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId={293D9E8A-91D4-40AF-95F1-399A9E105A44}|title=Order Granting a Certificate of Public Convenience and Necessity, Approving Financing and, Providing for Lightened Regulation (case no. 09-E-0628)|work=dps.ny.gov|pages=1–4, 16–28|date=October 16, 2009|access-date=November 26, 2018}}</ref><ref>{{cite web|url=http://www.rocklandcapital.com/portfolio/stephentown-spindle-llc/|title=Rockland Capital Stephentown Spindle Website|work=www.rocklandcapital.com|access-date=November 26, 2018}}</ref><ref>{{cite web|url=https://www.energy-storage.news/news/convergent-buys-up-40mw-of-flywheels-in-new-york-and-pennsylvania|title=Convergent buys up 40MW of flywheels in New York and Pennsylvania|work=www.energy-storage.news|author=Andy Colthorpe|date=May 8, 2018|access-date=November 26, 2018}}</ref><ref>{{cite web|url=https://www.electronicdesign.com/blog/flywheels-land-stephentown-new-york|title=Flywheels Land in Stephentown, New York|author=Joe Desposito|date=August 2, 2011|work=www.electricdesign.com|access-date=November 26, 2018}}</ref>

The project was initially financed in 2010 with a $43 million loan from the federal [[United States Department of Energy|Department of Energy]], however, this amount was reduced to $25 million in 2012 when SS acquired the SRS assets. The company does not sell energy into the [[New York energy law#NYISO|NYISO's]] electric wholesale market or capacity market, however, it does receive revenue from the ancillary services market for providing [[Utility frequency#US regulations|frequency regulation]] service. The stakeholder-driven policy at the NYISO excludes the facility from providing power into the NYISO's wholesale electric and capacity markets because it does not meet minimum criteria - a minimum of 5 minutes or 1 hour - for sustained energy delivery. The regulation service market in the NYISO provides revenue via two streams, a main regulation capacity price ($/MWh over a five-minute interval in the real-time market) based on a day-ahead and real-time market price, and a movement (performance) award ($/MW). For example, if the facility were able to provide its 20 MW output for 12 hours of the day at an average regulation price of $11 per MWh the facility would receive $963,600 a year. Revenue received from the performance fee, which averaged about $2.30 per MW in Q2 of 2018, is a much smaller proportion of annual revenue.<ref>NYISO Market Administration and Control Area Service Tariff (MST) Section 15.3</ref><ref>{{cite web|url=http://www.nyiso.com/public/markets_operations/documents/tariffviewer/index.jsp|title=NYISO Tariff Viewer Website|work=www.nyiso.com|access-date=November 27, 2018}}</ref><ref>{{cite web|url=https://www.potomaceconomics.com/wp-content/uploads/2018/08/NYISO-Quarterly-Report_2018-Q2__8302018.pdf|title=Quarterly Report on the New York ISO Electricity Markets Second Quarter of 2018|author=Jie Chen |author2=Pallas LeeVanSchaick |author3=David B. Patton |work=www.potomaceconomics.com|page=27|access-date=November 27, 2018}}</ref><ref>{{cite web|url=https://www.energy.gov/lpo/stephentown-spindle|title=US Dept. of Energy Stephentown Spindle Website|work=www.energy.gov|access-date=November 26, 2018}}</ref><ref name=NYISO>{{cite web|url=http://www.nyiso.com/public/webdocs/markets_operations/services/planning/Documents_and_Resources/Planning_Data_and_Reference_Docs/Data_and_Reference_Docs/2018-Load-Capacity-Data-Report-Gold-Book.pdf|title=NYISO 2018 Gold Book|work=www.nyiso.com|date=April 2018|pages=14, 57, 58, 64|access-date=November 26, 2018}}</ref>

It is the first commercial flywheel project in the United States to provide frequency regulation service. The only other comparable utility-scale energy storage facilities in New York are [[New York Power Authority|NYPA's]] 1,100 MW [[Blenheim–Gilboa Hydroelectric Power Station|pumped storage facility at Blenheim-Gilboa]] and NYPA's 240 MW [[Robert Moses Niagara Power Plant#Lewiston Pump-Generating Plant|Lewiston pumped storage facility at Niagara Falls]]. For a power comparison, the capital region's peak summer demand was 2,032 MW in 2017.<ref name=NYISO/>