<http://webisa.webdatacommons.org/455558448>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/188485232>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/455558448> .
<http://webisa.webdatacommons.org/455558448>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<epa.gov> .
<http://webisa.webdatacommons.org/455558448>	<http://www.w3.org/ns/prov#value>	"But the variability of such technologies as wind and solar generation is a formidable barrier to large-scale deployment." .
<http://webisa.webdatacommons.org/prov/400551683>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/455558448> .