From SIGSEM
"Modern development of wind-energy technology and applications was well underway by the 1930s, when an estimated 600,000
windmills supplied rural areas with electricity and water-pumping services."
((DEVELOPMENT001 INSTANCE-OF DEVELOPMENT#1)
(TECHNOLOGY001 INSTANCE-OF TECHNOLOGY#1)
(APPLICATION001 INSTANCE-OF APPLICATION#1)
(NUMBER24 INSTANCE-OF NUMBER)
(NUMBER24 HAS-VALUE "1930")
(WINDMILL001 INSTANCE-OF WINDMILL#1)
(AREA001 INSTANCE-OF AREA#1)
(ELECTRICITY001 INSTANCE-OF ELECTRICITY#1)
(SERVICE001 INSTANCE-OF SERVICE#1)
(UNKNOWN-AGENT UNDERWAY DEVELOPMENT001)
(DEVELOPMENT001 RANGE-OF TECHNOLOGY001)
(DEVELOPMENT001 RANGE-OF APPLICATION001)
(TECHNOLOGY001 CHARACTERISTICS WIND-ENERGY)
(APPLICATION001 NUMBER-OF-UNITS MORE-THAN-ONE)
(DEVELOPMENT001 CHARACTERISTICS MODERN)
(DURATION UNDERWAY WELL)
(TIME-BY UNDERWAY NUMBER24)
(NUMBER24 NUMBER-OF-UNITS MORE-THAN-ONE)
(TIME-PERIOD UNDERWAY PAST)
(WINDMILL001 SUPPLYING AREA001)
(WINDMILL001 NUMERIC-QUANTITY 600000)
(AREA001 HAVE-WITH ELECTRICITY001)
(AREA001 HAVE-WITH SERVICE001)
(SERVICE001 NAMED-TYPE WATER-PUMPING#0)
(SERVICE001 NUMBER-OF-UNITS MORE-THAN-ONE)
(AREA001 CHARACTERISTICS RURAL)
(AREA001 NUMBER-OF-UNITS MORE-THAN-ONE)
(TIME-PERIOD SUPPLYING PAST))
"Once broad-scale electricity distribution spread to farms and country towns, use of wind energy in the United States st
arted to subside, but it picked up again after the U.S. oil shortage in the early 1970s."
((ELECTRICITY-DISTRIBUTION001 INSTANCE-OF ELECTRICITY-DISTRIBUTION)
(FARM001 INSTANCE-OF FARM#1)
(TOWN001 INSTANCE-OF TOWN#1)
(USE001 INSTANCE-OF USE#1)
(WIND-ENERGY001 INSTANCE-OF WIND-ENERGY#0)
(U.S.-OIL-SHORTAGE001 INSTANCE-OF PERSON#1)
(U.S.-OIL-SHORTAGE001 ACTOR-NAME "U.S. oil shortage")
(U.S.-OIL-SHORTAGE001 ACTOR-GENDER NEUTER)
(NUMBER25 INSTANCE-OF NUMBER)
(NUMBER25 HAS-VALUE "1970s")
(ELECTRICITY-DISTRIBUTION001 SPREADING INTRANSITIVE-ARGUMENT)
(ELECTRICITY-DISTRIBUTION001 CHARACTERISTICS BROAD-SCALE)
(DESTINATION SPREADING FARM001)
(DESTINATION SPREADING TOWN001)
(FARM001 NUMBER-OF-UNITS MORE-THAN-ONE)
(TOWN001 NAMED-TYPE COUNTRY#1)
(TOWN001 NUMBER-OF-UNITS MORE-THAN-ONE)
(TIME-PERIOD SPREADING PAST)
(USE001 STARTING INTRANSITIVE-ARGUMENT)
(TIME-PERIOD STARTING PAST)
(WIND-ENERGY001 PICKING-UP INTRANSITIVE-ARGUMENT)
(TIME-AFTER PICKING-UP U.S.-OIL-SHORTAGE001)
(PICKING-UP LOCATION-IN NUMBER25)
(TIME-PERIOD PICKING-UP PAST))
"Over the past 30 years, research and development has fluctuated with federal government interest and tax incentives."
((RESEARCH001 INSTANCE-OF RESEARCH#1)
(DEVELOPMENT001 INSTANCE-OF DEVELOPMENT#1)
(GOVERNMENT-INTEREST001 INSTANCE-OF GOVERNMENT-INTEREST#1)
(INCENTIVE001 INSTANCE-OF INCENTIVE#1)
(RESEARCH001 FLUCTUATING INTRANSITIVE-ARGUMENT)
(DEVELOPMENT001 FLUCTUATING INTRANSITIVE-ARGUMENT)
(RESEARCH001 FLUCTUATING INTRANSITIVE-ARGUMENT)
(DEVELOPMENT001 FLUCTUATING INTRANSITIVE-ARGUMENT)
(HAVE-WITH FLUCTUATING RESEARCH001)
(HAVE-WITH FLUCTUATING DEVELOPMENT001)
(GOVERNMENT-INTEREST001 CHARACTERISTICS FEDERAL)
(INCENTIVE001 NAMED-TYPE TAX#1)
(INCENTIVE001 NUMBER-OF-UNITS MORE-THAN-ONE)
(TIME-PERIOD FLUCTUATING PRESENT-PERFECT))
"In the mid-'80s, wind turbines had a typical maximum power rating of 150 kW."
((TURBINE001 INSTANCE-OF TURBINE#1)
(MAXIMUM-POWER-RATING001 INSTANCE-OF MAXIMUM-POWER-RATING#0)
(KW001 INSTANCE-OF KW#1)
(|'80001| INSTANCE-OF |'80#0|)
(TURBINE001 HAVING MAXIMUM-POWER-RATING001)
(TURBINE001 NAMED-TYPE WIND#1)
(TURBINE001 NUMBER-OF-UNITS MORE-THAN-ONE)
(MAXIMUM-POWER-RATING001 RANGE-OF KW001)
(KW001 NUMERIC-QUANTITY 150)
(MAXIMUM-POWER-RATING001 CHARACTERISTICS TYPICAL)
(LOCATION-IN HAVING |'80001|)
(|'80001| CHARACTERISTICS MID-)
(|'80001| NUMBER-OF-UNITS MORE-THAN-ONE)
(TIME-PERIOD HAVING PAST))
"In 2006, commercial, utility-scale turbines are commonly rated at over 1 MW and are available in up to 4 MW capacity."
((TURBINE001 INSTANCE-OF TURBINE#1)
(DATE26 INSTANCE-OF DATE)
(DATE26 HAS-YEAR 2006)
(UNKNOWN-AGENT RATING TURBINE001)
(TURBINE001 CHARACTERISTICS COMMERCIAL)
(TURBINE001 CHARACTERISTICS UTILITY-SCALE)
(TURBINE001 NUMBER-OF-UNITS MORE-THAN-ONE)
(FREQUENCY RATING COMMONLY)
(TIME-IN RATING DATE26)
(TURBINE001 BEING AVAILABLE)
(TURBINE001 NUMBER-OF-UNITS MORE-THAN-ONE))
