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: National Clean Energy Summit 5.0

National Clean Energy Summit 5.0

08 Aug

On August 7th, Sen. Harry Reid (D-NV) teamed with John Podesta from the Center for American Progress to host National Clean Energy Summit 5.0, the fifth annual gathering of leaders from government, business, academia, and non-profit organizations to focus on new ways to develop renewable energy within the U.S. as well as the state of Nevada.  The event was staged at the Bellagio Resort.  Speakers included former President Bill Clinton, Secretary of the Interior Ken Salazar, Secretary of the Air Force Michael Donley, Congresswoman Shelley Berkley (D-NV), Federal Energy Regulatory Commissioner Jon Wellinghoff, MGM Resorts International Chairman and CEO Jim Murren, Tesla Motors Chairman and CEO Elon Musk, FedEx Chairman Frederick Smith, American Filmmaker Chris Paine, and UNLV President Neil Smatresk.

The event also included an interesting exhibit hall with three plug-in electric vehicles on display: a plug-in Toyota Prius PHV with a Leviton SAE Level 2 EVSE station, a Tesla Motors Model S, and a Volkswagen e-Golf.

Toyota Prius PHV

Plug-in Toyota Prius PHV with Leviton EVSE

Tesla Motors Model S

Tesla Motors Model S

Tesla Motors has developed its own proprietary electric vehicle supply equipment (EVSE)  that allow the car to be charged from AC or DC electric vehicle supply equipment (EVSE) power sources.

Tesla Model S EVSE charging port

Because the Tesla Motors Model S can use an 85 kilowatt-hour battery pack for a 300-mile range, it would take many times longer to recharge that vehicle compared to the 24 kilowatt-hour battery pack of a Nissan Leaf.  Tesla Motors engineers decided to create their own high power recharging technology.  However, their EVSE cable also uses several adaptors to accommodate automotive industry standard SAE J1772 Level 1 and Level 2 EVSE equipment that can be used in addition to the company’s proprietary charging equipment.

Tesla Motors EVSE and adaptors

On the input side of the cable assembly, NEMA standard plugs for both 120 VAC and 240 VAC are available.   The NEMA 14-50 adaptor is suitable for most KOA campgrounds that have 240 VAC/50 Amp EVSE at campground sites that are also used by recreational vehicles.

If a Tesla Model S owner would like to recharge the car’s batteries off the more ubiquitous SAE J1772 Level 2 EVSE in the public domain as well assome  private residential dwellings,  there is also an adapter that meets the standard SAE J1772-2009 specifications for AC Level 1 and Level 2 power ranges, including extra data pins for the “pilot” and “proximity” signals required.

Tesla Motors EVSE adaptor for SAE AC Level 1 and Level 2 connectors

Tesla Motors EVSE adaptor for SAE AC Level 1 and Level 2 (back end)

The back end of the adaptor plugs into the existing Tesla Motors Model S recharging port shown above.  The front end of the adaptor provides a female socket that can now mate with the standard SAE J1772 male plug that is available from the SAE J1772 EVSE.

Tesla Motors is planning to release specifications for its “Supercharger” technology in the near future that can recharge an 85 kilowatt-hour battery pack for the Model S in just 45 minutes.

Volkswagen e-Golf

Volkswagen e-Golf all-electric car with range of 93 miles.

Volkswagen was also displaying its first entry into the plug-in electric car market with a battery-powered Golf that is scheduled for production during the 2014 model year.  40 test cars have been built and are being evalutated by Volkswagen employees as their daily drivers.

Volkswagen e-Golf electric car with GE Wattstation EVSE

The Volkswagen e-Golf has a range of about 93 miles before its 26.5 kilowatt-hour battery pack needs to be recharged.  It will compete against the Nissan Leaf, Ford Focus EV, GM Spark, Fiat 500 EV, KIA Ray, and CODA sedan within the battery-powered EV market by 2014.


Posted by Stan Hanel, Outreach Coordinator, Nevada Electric Vehicle Accelerator

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