All articles starting with R
22,461 articles
Reneo
Reneo is a Hamburg-based technology and asset management platform for decarbonizing German residential real estate, co-founded by Lennart Börner and Alexander Graubner-Müller, with a €600 million capital platform announced in 2025.
Rener Gracie
Rener Gracie, American jiu-jitsu instructor, 4th-degree black belt, CEO of Gracie University and head instructor in Torrance, CA; grandson of Helio Gracie, co-creator of Gracie Combatives and GST.
Renesas Electronics
Renesas Electronics is a Japanese semiconductor company formed in 2010 from the merger of NEC Electronics and Renesas Technology, a 2003 Hitachi and Mitsubishi Electric joint venture. It makes microcontrollers, automotive chips, and power semiconductors.
ReNew Energy Global
ReNew Energy Global is an Indian renewable energy company founded by Sumant Sinha in 2011 that develops solar, wind, hydro, and battery storage projects and manufactures solar modules.
Renew Europe
Renew Europe (RE) is the centrist liberal political group in the European Parliament, formed 12 June 2019 as successor to ALDE. It held 102 MEPs at the end of the 2019-2024 term, fell to 77 seats (fourth place) after the 2024 elections, and sits in the pro-European coalition with the EPP and S&D.
Renew trial
Renew trial (RENUÉVATE Project, NCT07313267): cluster-randomized controlled trial in Talca, Chile testing an 8-week alternative-sports physical education program (flag football, ultimate frisbee, korfball, kin-ball) on fitness, motor competence, and enjoyment in 11-12-year-olds.
Renewable energy
Renewable energy, also called alternative energy, is energy from continually replenished natural sources: solar, wind, hydropower, geothermal, and biomass, used for electricity, heat, and fuels.
Renewable Energy Certificate
A renewable energy certificate (REC) is a market instrument representing the environmental attributes of 1 MWh of renewable electricity, issued when that power is delivered to the grid.
Renewable energy certificates
Renewable energy certificates (RECs) are market instruments representing the attributes of one megawatt-hour of renewable electricity, the accepted instrument for renewable energy claims in the United States.
Renewable Energy Directive II
Renewable Energy Directive II (RED II), formally Directive (EU) 2018/2001, is the EU law replacing the 2009 directive, setting a binding 32% renewables target for 2030, raised to 42.5% in 2023.
Renewable Energy Directive III
Renewable Energy Directive III is the European Union's 2023 revision of its main renewable energy law, raising the binding renewables target to at least 42.5% by 2030.
Renewable energy in India
Renewable energy in India is electricity generated from solar, wind, hydro, and bio-power sources, led by the Ministry of New and Renewable Energy and targeting 500 GW of non-fossil capacity by 2030.
Renewable energy in Turkey
Renewable energy in Turkey is electricity and heat from hydropower, solar, wind, geothermal, and biomass, supplying 43.3% of electricity in 2025, led by hydropower and record solar and wind growth.
Renewable Energy Independent Power Producer Procurement Programme
The Renewable Energy Independent Power Producer Procurement Programme (REIPPPP) is South Africa's competitive tender program for procuring renewable energy from private producers, launched in 2011.
Renewable Energy Target (Australia)
The Renewable Energy Target is an Australian Government scheme requiring electricity retailers to buy renewable energy certificates, targeting 33,000 GWh of extra renewable electricity annually.
Renewable fuel of non-biological origin
A renewable fuel of non-biological origin (RFNBO) is a liquid or gaseous fuel made from renewable energy other than biomass, such as green hydrogen and synthetic fuels.
Renewable Fuel Standard
The Renewable Fuel Standard is a US federal program requiring minimum annual volumes of renewable fuel in transportation fuel, created by Congress in 2005 and expanded in 2007.
Renewable Fuels Association
The Renewable Fuels Association, organized in 1981, is the national trade association for the United States fuel ethanol industry, advocating policies that expand ethanol production.
Renewable Heat Incentive
The Renewable Heat Incentive (RHI) was a UK government scheme paying households and businesses for renewable heat they generated, with the domestic scheme running from 2014 to 2022.
Renewable Identification Number
A Renewable Identification Number (RIN) is a credit generated when renewable fuel is produced in or imported into the United States, used to demonstrate compliance with the Renewable Fuel Standard.
Renewable Identification Numbers
Renewable Identification Numbers (RINs) are credits generated for each unit of renewable fuel produced or imported in the United States under the federal Renewable Fuel Standard.
renewable natural gas
Renewable natural gas, also called biomethane, is biogas from decomposing organic matter or gasified biomass, purified to 96–98% methane so it is fully interchangeable with fossil natural gas in pipelines.
Renewable portfolio standard
A renewable portfolio standard (RPS) requires retail electricity suppliers to procure a rising minimum share of power from renewable sources; the first was Iowa's, in 1983.
Renewable resource
A renewable resource, also called a flow resource, is a natural resource like water, forests, fish, or sunlight that regenerates on a timescale relevant to human use.
Renewables Obligation
The Renewables Obligation was the United Kingdom's main support scheme for large-scale renewable electricity, obliging suppliers to present ROCs from 2002 until closure in 2017.
RenewableUK
RenewableUK, formerly the British Wind Energy Association, is the UK's principal renewable energy trade association, representing close to 500 companies across wind, energy storage, and marine energy.
Renewal process
A renewal process is a stochastic point process in which interarrival times between successive events, called renewals, are independent and identically distributed, so the process restarts at each event.
Renewal theory
Renewal theory is the branch of probability theory that studies renewal processes, counting events such as failures and replacements, with applications in reliability, queueing, and epidemiology.
Renewed Land Ordinance
The Renewed Land Ordinance (Czech Obnovené zřízení zemské) was a 1627 land statute of Emperor Ferdinand II for Bohemia, making the Habsburg crown hereditary and Catholicism the only permitted faith.
Renfe
Renfe, formally Renfe Operadora, is Spain's state-owned railway operator, carrying over 535 million passengers in 2024 with services including the AVE high-speed trains and Cercanías commuter networks.