Cape Wind :: America's First Offshore Wind Farm in Nantucket Sound

Supplying Electricity

Helping our Environment

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Cape Wind Scientific Monitoring Station ~ Current Conditions
In preparation for America’s first offshore wind farm, - capable of powering on average three-quarters of the Cape and Islands with clean, renewable energy - Cape Wind has erected a meteorological data tower on Horseshoe Shoal, in Nantucket Sound. As part of our continued commitment to the community we are providing current weather and sea conditions to the public.

Current Conditions
Last updated: Fri Mar 12 05:11:04 2010 EDST • Wind speed, direction and gust, air temperature and pressure are updated every 10 minutes. We have gathered all of the sea temperature, current, and wave data we need for the design and engineering of the wind farm. We have removed the equipment from the sea bed and will no longer be posting these data on the website. We will continue to post the wind, pressure, and air temperature data on our website as well as the potential output of the wind farm and emissions reductions. The information at this website is provided for informational purposes only. Please see full disclaimer below.
Wind direction*† (WD):	69 deg
Wind speed* (WS):	16 knots
Wind gust* (WG):	19 knots
Barometric pressure** (BP):	1022.0 mb
Air temperature** (AT):	42.1 ° F
* Reading taken at 20 meters above mean sea level ** Reading taken at 10 meters above mean sea level † Wind, current and wave direction is in degrees clockwise from true North

If Cape Wind were operational since we started monitoring this data we would have produced the following amount of clean renewable energy and greenhouse gas offsets:

11,198,244

cumulative MW hours

5,850,222

tons of CO₂ offset*

*CO2 offsets are based on ISO New England Marginal Emissions Rates.


	287

Power output is based on wind speed at 75 meters above surface.

The average electric demand of the Cape & Islands is 230 MW [from NSTAR].

If Cape Wind were running today, we would be offsetting emissions from other regional sources of electricity. Exactly which fuel source we will offset is difficult to quantify because the "mix" of energy sources being utilized by the grid is based upon non-public price information and varies from hour to hour. However, over the past hour, generating the same amount of energy from oil, coal or natural gas would have created the following estimated emissions.

	OIL (lbs/hour)¹	COAL (lbs/hour)²	GAS (lbs/hour) ³
SO₂	2,759	3,132	4
NO_X	689	1,005	17
CO₂	488,579	557,556	219,860

¹ Oil emission rates for NOx, SO2 and CO2 taken from EPA eGRID emission database for Canal Electric for 2000
² Coal emission rates determined from EPA eGRID
³ Gas Emission factors taken from permits issued for Exelon facilities (formerly owned by Sithe Energy) at Everett and Weymouth. CO2 from Ramapo Energy Project analysis

Click here to learn more about our energy supply.
Click here to learn more about the environmental impact of the pollutants listed above.

Please check back frequently to see updated calculations of the wind farm’s potential output and emissions offsets.

Previous 12 hours

Date	Hour	WD	WS	WG	BP	AT
		(deg)	(knots)	(knots)	(mb)	(°F)
03/12	5 am	69	16	19	1022.0	42.1
03/12	4 am	65	17	19	1022.0	42.1
03/12	3 am	65	15	17	1022.0	41.8
03/12	2 am	67	16	18	1021.0	42.2
03/12	1 am	74	15	17	1022.0	41.9
03/12	12 am	70	17	20	1021.0	41.7
03/11	11 pm	70	16	18	1021.0	41.3
03/11	10 pm	75	16	18	1022.0	41.4
03/11	9 pm	64	16	18	1022.0	41.3
03/11	8 pm	66	14	16	1022.0	41.0
03/11	7 pm	70	14	16	1022.0	40.8
03/11	6 pm	61	13	15	1022.0	40.8
03/11	5 pm	77	14	16	1021.0	41.1

Terms of Use:
THE INFORMATION AT THIS WEBSITE IS PROVIDED BY CAPE WIND ASSOCIATES, LLC FOR INFORMATIONAL PURPOSES ONLY. THE USER ASSUMES THE ENTIRE RISK RELATED TO ITS USE OF THIS DATA. THIS INFORMATION IS PROVIDED "AS IS." NO WARRANTIES ARE MADE BY CAPE WIND ASSOCIATES, LLC WITH RESPECT TO THE ACCURACY OF THIS INFORMATION INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, OR WARRANTIES ARISING BY STATUTE OR OTHERWISE IN LAW OR FROM A COURSE OF DEALING OR USAGE IN TRADE. CAPE WIND ASSOCIATES, LLC WILL NOT BE LIABLE FOR ANY CLAIMS, LOSSES, OR DAMAGES ARISING FROM OR CONNECTED WITH THE USE OF THIS INFORMATION. THE USER AGREES TO HOLD CAPE WIND ASSOCIATES, LLC, ITS AFFILIATES, PARTNERS AND PERSONNEL HARMLESS FROM ANY DAMAGES RESULTING FROM THE USE OF THIS INFORMATION. THE USER'S SOLE AND EXCLUSIVE REMEDY IS TO STOP USING THE INFORMATION PROVIDED AT THIS WEBSITE.