|Click show for a short list of the current PHEV conversion and kit options for the Toyota Prius.|
A W:Plug-in Hybrid Electric Vehicle (PHEV) or gas-electric hybrid fueled vehicle is a hybrid which has additional battery capacity and the ability to be recharged from an external electrical outlet. In addition, modifications to the vehicle's control software may be required. The vehicle can be used for short trips of moderate speed without needing the W:internal combustion engine (ICE) component of the vehicle, thereby saving fuel costs. In this mode of operation the vehicle operates as a pure W:battery electric vehicle (BEV) with a weight penalty (the ICE). The long range and additional power of the ICE power train is available when needed.
PHEVs are commonly called "grid-connected hybrids," "gas-optional hybrids" (GO-HEVs), "full hybrids," and are sometimes called PHEV-30 for instance, to denote a hybrid with a 30-mile (50 km) electric range. Compared to a HEV-0 (a non-plug-in hybrid), or BEV/PHEV-300 in the case of the 300 mile tzero EV with its gasoline-fueled range extending trailer. While Ford, GM, and Toyota have all used the term "Full Hybrid Technology" to describe configurations that allow electric-only operation at low speeds, they can not plug in to recharge the battery. Two other PHEV names used by a major U.S. automotive supplier and in a 1999 SAE paper are "energy hybrids" and "true hybrids". PHEVs can also operate in a blended mode where both gasoline and external electricity are used simultaneously to increase gasoline mileage for a particular range, usually double that of its electric-only range. Connected vehicles also make possible Vehicle-to-grid applications which could provide many advantages to both grid operators and vehicle owners.
The PHEVLER is defined as a PHEV with sufficient battery capacity for all electric driving of twice the average daily distance. The average daily driving distance in the USA is 30 - 35 miles, so the 2016 Chevrolet Volt with an electric range of 53 miles is the first commercial car to (almost) qualify as a PHEVLER.
There have been a number of successful Prius conversions. Ron of CalCars has a PbA conversion named PriusPlus and EDrive is expected to use Valence Li-ion batteries in conversions for consumers. Both are based on the 2004 or newer (Gen2) Toyota Prius and are now capable of charging from the grid using standard 120V AC outlets. They can operate as pure EV's at speeds up to 34 mph for the range of their larger batteries, which is about 10 miles for PbA and 30 miles with Li-ion batteries. They are also delivering vastly improved mileage at higher speeds in an EV-Heavy type of blended mode which delivers roughly twice the gasoline mileage during trips of twice their electric ranges (20 and 60 miles). Of course one should also consider the electric power required to recharge in these 100+ mpg situations (<$1 per gallon equivalent). During extended drives they operate just as a normal Prius and deliver their usual mileage. A purpose build PHEV would most likely be freeway capable in an electric only mode just like SEVA:Electric vehicles are. Enginer's affordable and universal plugin conversion kits can be easily retrofit into Gen 1, 2 and 3 Prius as well as other hybrids (tested on Honda Insight Gen 1, Gen2, Ford Escape Hybrid, Toyata Camry Hybrid, Lexus RX400H, Lexus LS250H).
Electric Fleet Vehicles. PHEV & BEV trucks, buses and cars are being used as commercial and government fleet vehicles.
- Insight PHEV utilizing MIMA to operate in a higher mileage Mixed-mode.
- SEVA:tzero and it's W:genset trailer
- BEVs with W:Pusher trailers
- 2011.01.09 - Chevrolet Volt Reviewed by the Father of the Plug-In Hybrid - Dr. Andy Frank
- DaimlerChrysler Sprinter Van
- W:Renault Kangoo
- Italy - Vespa hybrid Scooter , 
- SEVA:Chevy Volt The new EV from GM will be a Series Hybrid...
- 2007.07.25 - Plug-in Hybrid Electric School Bus Project
- 2007.02.01 - Volvo C30 PHEV
- 2006.09.08 - New plug-in hybrid from MES-DEA Based on its electric Fiat Panda with ZEBRA battery, , 
- 2006.08.31 - Mini Cooper Converted to PHEV by British
- 2006.03.30 - Saab 9-3 PHEV
- 2006.03.16 - BMW Mini Cooper Plug-In-Hybrid
- Dr. Andrew Frank
- Will consumers plug in? Consumer Response Video
- Interview with members of the new Plug-In Hybrid Electric Vehicle Consortium.
- The SEVA:tzero is an all electric vehicle sports EV with 300 miles of range, although it can also function as a PHEV at about 30mpg on gas utilizing it's gasoline-fueled range-extending trailer. In this mode, it becomes a PHEV-300 with unlimited gasoline range.
- Hybrid Truck Project
- An interesting project to convert an existing Hybrid commuter bus into a PHEV Recreational Vehicle.
- Prof Jim Burns
- SDSU L3 Prof Jim Burns - Diesel Plugin Hybrid
- 2007.09 - epri-reports.org - Environmental Assessment of Plug-In Hybrid Electric Vehicles.
This doesn't look like it plugs in?
- 2008.05.08 - ieee.org - Automakers’ Plug-In Plans
- 2008.04.25 - evworld.com MIRA Develops 'Plug-Less' Plug-In Hybrid Retro-fit
- 2007.12.02 - electricdrive.org - EVS-23 Plug-in Hybrid Electric Vehicle Workshop
- 2007.11.14 - bloomberg - Iacocca Says Chrysler on `Right Path' Under Cerberus "Plug-in hybrids: that's the wave of the future, not hydrogen"
- 2007.10.09 - autobloggreen.com - Massachusetts converting ten state-owned hybrids to plug-ins
- 2007.10.09 - sfbayguardian - Green City: Plugging into what's next
- 2007.10.12 - EVWorld - Backyard Plug-In Hybrid Conversion Kits Coming
- 2007.08.29 - podtech.net - California's New Hybrid School Bus Video
- 2007.08.06 - business2 - Federal Energy Official: Plug the Prius into the Grid
- 2007.08.21 - TheOilDrum - Saving 20 million barrels a day. The 100mpg hybrid car should be here, now!
- 2007.08.14 - OpenSourceToday - Plug-in Hybrids and Open Source
- 2007.08.03 - bloomberg.com - Toyota Electric Car May Have Half the Range of GM's (Update4)
- 2007.07.25 - The Specs on Toyota's Plug-in Prius Here's the skinny on Toyota's plug-in version of the groundbreaking hybrid, its answer to GM's development of the electric Volt
- 2007.07.20 - CLEANER FUTURE? PLUG IN - Electric hybrid cars hold promise of slashing greenhouse gases
- 2007.07.02 - seattletimes.nwsource.com - Jump-start a secure, clean energy future with plug-in hybrid vehicles
- 2007.05.29 - businessweek.com - Long-Range Lithium Battery - Lithium Technology Corp.’s new battery gives a retrofitted Toyota Prius a range of more than 125 miles
- 2007.06.29 - Toyota Down On Plug-In Conversions
- 2007.05.03 - teslamotors.com - Mr. Tesla Goes to Washington W:Martin Eberhard testifies before a Senate subcommittee for the Hearing on Advanced Technology Vehicles: The Road Ahead
- 2007.04.17 - PHEVs on the Global Engineering Agenda; Defining and Refining the Problem
- 2007.03.12 - fora.tv - Sherry Boschert talks about Plug-in Hybrids. president of the [San Francisco Electric Vehicle Association
- 2007.03.07? - Toyota's Bid for a Better Battery - CEO Watanabe confirms that Toyota will develop new lithium-ion batteries for its third-generation hybrids
- 2006.12.21 - How Plug-In Hybrids Will Save the Grid The use of vehicles that run on electricity could be a boon to the ailing electrical grid.
- 2006.11.09 - GM Details Plans for a Serial PHEV   PHEV-20 or -30
- Hope it makes it into production and has 50 to 100 miles of EV range, which would be easy with modern Lithium.
- 2006.11.01 - Prepare to Plug in for 100-mpg Hybrids
- 2006.10.05 - inoculatedmind.com - "Inventor Andy Frank explains his Plug-in Hybrid Electric Vehicle design," The Inoculated Mind Radio & Mindcast.
- 2006.07.20 - Toyota moves to corner the 'plug-in' market
- 2006.06.23 - Nissan to make a Plug-in Hybrid W/Lithium-ion battery 
- 2006.08.25 - msn.com - The 100-mpg car is coming
- 2006.06.25 - http://auto.xprize.org
- 2006.06.23 - blooomberg.com - GM Plans Gas-Electric Car to Rival Toyota, People Say (Update2)
- 2006.06.13 - renewableenergyaccess.com - Minnesota Law Endorses Plug-in Hybrid, Flexible-Fueled Vehicles
- 2006.06.08 - economist.com - Plugging into the future
- 2006.05.30 - forbes.com - The Frankenstein Hybrid
- 2006.05.24 - technologyreview.com - Plug-In Hybrids Are on the Way "the green controller box." by Manzanita Micro
- 2006.05.28 - mercurynews.com - At national lab, vehicle research focuses on alternatives to oil
- 2006.05.29 - suntimes.com - Argonne's drive: new fuels for cars
- 2006.05.25 - chron.com - Plug your hybrid in, get 100 miles per gallon
- 2006.05.24 - evworld.com - Plug-In Hybrid Electric Vehicle Act 2006
- 2006.05.24 - technologyreview.com - Plug-In Hybrids Are on the Way, PFC-30
- 2006.05.23 - seattletimes.com - Plug-in energy independence
- 2006.05.18 - axcessnews.com - New Hybrid Cars Could Get 100 mpg, House Committee Told
- 2006.05.18 - statesman.com - Lawmakers plug Austin idea Washington getting charged up by electric hybrid idea.
- 2006.05.18 - researchresearch.com - Strong support for plug-in hybrid bill
- 2006.05.18 - ucdavis.edu - New Super-Efficient Plug-in Hybrid Unveiled Trinity
- 2006.05.18 - sfgate.com - Plug-in hybrids charge Hill Bay Area group touts cars to House panel
- 2006.05.18 - scenta.co.uk - Hybrid cars for America
- 2006.05.18 - freep.com - Plug-in hybrid to be seen in Washington
- 2006.05.18 - latimes.com - Scientists Urge Congress to Fund Research on Plug-In Hybrid Cars
- 2006.05.17 - usatoday.com - Scientists back plug-in hybrids
- 2006.05.17 - seattlepi - Scientists back plug-in hybrids
- 2006.05.10 - Green Car Congress - Hybrid Technologies Developing All-Electric Taxi for NYC
- 2006.05.02 - The War on Terror: The Energy Front See the last four paragraphs.
- 2006.04.23 - Toyota Ratchets Up Plug-In Prius Talk
- State of the Union - What Bush Should be Saying. 
- alternet.org Car Owners in the Driver's Seat
- evworld.com Plug in my hybrid car? Why, you ask?
- delphi.com techpaper on HFC PHEVs - A step beyond PHEV? EVDL Yahoo EVDL_Maillist:2006./1./140