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Omsk-Irkutsk Oil Pipeline
The Omsk–Irkutsk Oil Pipeline (Нефтепровод Омск – Иркутск) is a Russian trunk crude-oil pipeline about 1,870 km long, built from 1955 and today feeding the ESPO system toward Irkutsk.
Omsk-Novosibirsk-Kuzbass Gas Pipeline
The Omsk–Novosibirsk–Kuzbass gas pipeline (Russian: газопровод Омск – Новосибирск – Кузбасс) is a trunk natural gas pipeline in Western Siberia, running from Omsk through Novosibirsk to the industrial Kuzbass region of Kemerovo Oblast.
Omsk-Pavlodar Oil Pipeline
The Omsk-Pavlodar Oil Pipeline (Нефтепровод Омск - Павлодар) is a 438 km crude oil pipeline running from Omsk, Russia, to Pavlodar, Kazakhstan, in service since 1977 as the first leg of the Omsk-Pavlodar-Shymkent trunk system.
OMV
OMV is an Austrian integrated energy, fuels, and chemicals company headquartered in Vienna. Founded in 1956, it is Austria's largest listed industrial company, with 1,708 filling stations in eight European countries.
OMV Petrom
OMV Petrom is a Romanian integrated energy company and the largest in Southeastern Europe, majority-owned by Austria's OMV and listed on the Bucharest Stock Exchange.
On-load tap changer
An on-load tap changer (OLTC) is a switching device in a power transformer that regulates output voltage in discrete steps while the transformer remains energized and carrying load.
Onagawa nuclear power plant
The Onagawa nuclear power plant (女川原子力発電所) is a nuclear station in Onagawa, Miyagi Prefecture, Japan, run by Tohoku Electric Power and known for safely withstanding the 2011 earthquake and tsunami.
Once-through fuel cycle
The once-through fuel cycle is an open nuclear fuel cycle in which uranium fuel is used once in a reactor, then disposed of directly without reprocessing.
Oncor
Oncor is a regulated electricity transmission and distribution utility headquartered in Dallas, Texas, operating the largest such system in Texas and serving more than 4.1 million homes and businesses.
One Stone Energy Partners, L.P.
One Stone Energy Partners, L.P. is a Cayman Islands limited partnership based in New York that invests in oil and gas, raising $109 million in 2012.
Onee
Onee (Office National de l'Électricité et du Potable, ONEE) is a Moroccan state-owned utility providing electricity and drinking water, formed in 2012 through a merger.
Onel Oil and Gas Field
Onel is an offshore oil and gas field in the Gulf of Mexico off Tabasco and Campeche, Mexico, discovered in 2004 and wholly owned and operated by Pemex.
ONGC
ONGC, or Oil and Natural Gas Corporation Limited, is an Indian state-controlled oil and gas producer headquartered in New Delhi, supplying about 71 percent of domestic production.
ONGC Hazira gas processing plant
The ONGC Hazira gas processing plant is an onshore facility in Surat district, Gujarat, India, owned by ONGC to process sour gas from its Mumbai Offshore fields.
ONGC Videsh
ONGC Videsh Limited (OVL), founded in 1965, is the wholly owned overseas oil and gas exploration arm of India's state-owned ONGC and the country's second largest petroleum company.
Onkalo spent nuclear fuel repository
Onkalo, Posiva Oy's spent nuclear fuel repository on Finland's Olkiluoto island, is set to become the world's first permanent disposal facility, about 430 meters underground.
Ontario Energy Board
The Ontario Energy Board is the independent economic regulator of Ontario's electricity and natural gas sectors, empowered by provincial statute to set utility rates, license participants, and protect consumers.
Ontario Power Generation
Ontario Power Generation (OPG) is the Province of Ontario's largest electricity generator, created in 1999 from Ontario Hydro, operating nuclear, hydroelectric, and gas stations including Darlington and Pickering.
Onward Energy Holdings
Onward Energy Holdings is the holding company of Onward Energy, a private American power producer owning wind, solar, and natural gas plants across the United States.
Oooguruk Oil and Gas Field
The Oooguruk Oil and Gas Field is an offshore Alaska North Slope field producing since 2008 from an artificial gravel island in Harrison Bay, Beaufort Sea, now operated by Hilcorp.
OPAL Fuels Inc.
OPAL Fuels Inc. is an American renewable energy company in White Plains, New York, that converts landfill and dairy farm biogas into renewable natural gas for trucking.
OPAL Gas Pipeline
The OPAL gas pipeline (Ostsee-Pipeline-Anbindungsleitung) is a 473-kilometer natural gas pipeline in eastern Germany connecting Nord Stream 1's landfall at Lubmin to the Czech border.
OPC Energy
OPC Energy is an Israeli independent power producer founded in 2010 as the first private electricity company in Israel, now operating in the United States too.
OPEC+
OPEC+ is a group of OPEC and ten allied oil-producing countries, formed in 2016 to coordinate production and stabilize oil markets, producing about 40 percent of world crude.
Open Charge Alliance
The Open Charge Alliance is a non-profit organization, founded in 2014, that develops and governs the Open Charge Point Protocol, the open communication standard between electric vehicle charging stations and central systems.
Open Charge Point Protocol
The Open Charge Point Protocol (OCPP) is an open communication protocol between electric vehicle charging stations and management systems, maintained by the Open Charge Alliance.
Open pond cultivation
Open pond cultivation is the large-scale growth of photosynthetic microorganisms, chiefly microalgae and cyanobacteria, in shallow open-air raceway ponds whose low cost makes them the basis of industrial algal biofuel production.
Open-circuit voltage deficit
The open-circuit voltage deficit is the difference between a solar cell's theoretical Shockley–Queisser voltage limit and its measured open-circuit voltage, a figure of merit for photovoltaic quality.
OpenADR
OpenADR (Open Automated Demand Response) is an open, two-way communications standard for demand response and distributed energy resources, developed by the OpenADR Alliance from research at Lawrence Berkeley National Laboratory.
Operation Pluto
Operation Pluto, also known as Pipe Line Under The Ocean, was a British World War II operation that piped fuel across the English Channel after D-Day.