More Solar PV Installed in US in 2016 than Any Other Electricity Source


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In a preview of a soon-to-be released annual report from the Solar Energy Industries Association (SEIA) and the GTM research, it has been reported that the electricity generating capacity of solar photovoltaic (PV) installations added to the US electrical grid in 2016 was higher than any other type of electricity generating technology. 39% of all new electricity capacity, equivalent to around 14.6 GW, was added in 2016, a 95% increase from 2015. Together, new solar and wind installations comprised 65% of all new electricity generating capacity in the US, reflecting the fact that the costs of solar PV installations have been cost competitive with traditional sources across much of the US.

As the price of electricity from solar PV continues to drop, this creates a huge opportunity to use electrochemical technologies to convert low-cost, carbon-free electricity into storable chemicals and fuels.


Plot of new electricity generating capacity in the US by year and type of technology. Source: Source: GTM Research / SEIA U.S. Solar Market Insight Report

An Update on H2 Fuel Cell Cars (and Trucks!)


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This recent article gives a nice summary of the state of H2 fuel cell vehicles in the U.S. and around the world with a focus on describing plans by a company out of Utah (Nikola) to develop a nation-wide H2 refueling network for hybrid H2/electric tractor trailers or semis:

You can see a map of the approximate locations of the planned fueling stations here. “Big rigs” are an exciting opportunity for H2 fuel cells because their larger size (fuel tanks) can be leveraged to give them a long range (distance traveled between fueling), and unlike an average private vehicle, it’s more common for a truck to a few well-defined routes. Thus, an early fleet of trucks can get by on fewer fueling stations.  Importantly, an analyst at the Union of Concerned Scientists notes in this  article that although big rigs only make up 7-10% of the vehicles on the road, they consume 25% of the fuel.

Although the H2 refueling network in the US is currently confined to California, the article above reports that a network of stations will soon be installed in the Northeast, and points out that extensive systems are in place or being built in other countries in the world like Denmark, Japan, and Germany.


Tipping Points for Solar Energy


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Below is a recent article in Bloomberg that has a bunch of good facts about the state of solar energy. Among them:…..

-“The world …. is adding more capacity for clean energy [solar & wind] each year than for coal and natural gas combined”

-“it’s likely that the total amount of solar photovoltaics added globally [in 2016] will exceed that of wind for the first time”

-“Half the price of coal”- It is noted that a record deal on a PV plant in Chile signed in August of this year came in at $29 /MW-hr – “roughly half the price of competing coal power “.

Here’s the link to the full article:

World Energy Hits a Turning Point: Solar That’s Cheaper Than Wind

Cover story on Artificial Photosynthesis in c&en

The cover story for the most recent issue of Chemical and Engineering News (c&en) wason  solar fuels (aka artificial photosynthesis systems), and includes a nice overview of approaches that researchers are taking in this field: (the story starts on pg. 32):

Image result for "Will the artificial leaf sprout?"


Solar (and Coal) Power in India


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India has some very ambitious targets set for deployment of solar technology for 2022 and 2030.  At the same time, it is currently one of the biggest coal users in the world. Thus, India has huge potential to reduce its (projected) emissions, and it will be interesting to watch how these dynamics play out in the coming years.:

India wants to become a solar superpower, but its dependence on toxic coal says otherwise

H2 production vs. CO2 reduction


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Here is a recent viewpoint article published in ACS Energy Letters discussing the merits of using solar energy (or solar-derived electricity) to 1.) split water for H2 production, or 2.) reduce CO2 into liquid hydrocarbon fuels:

There is a lot of active research ongoing for both of these pathways, so this is an important discussion to be having.

The article nicely articulates the reasons for not performing CO2 reduction from CO2 captured from coal fired power plants.  However, there are other sources of CO2 as well, such as cement plants, or  capturing CO2 directly from air (so-called negative emissions) as discussed in this article:



Recent EES article on 3D printing and Electrodeposition of Electrolyzer components

We commonly use 3D printing in our lab for making (photo)electrochemical cells and reactors, and electrodeposition for depositing electrocatalytic materials.

Bridging both of these areas is a a recent paper in Energy & Environmental Science (EES) where researchers electroplated Nickel onto 3D printed PLA flow field plates to be used in polymer electrolyte membrane (PEM) electrolyzers:!divAbstract

Highlighting a commonly cited advantage of 3D printing, these researchers show the benefit of rapid prototyping that is made possible by 3D printing.

Mass balance on biofuels


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Here is a recent summary article on a recent life cycle analysis (LCA) study comparing CO2 emissions associated with biofuels (e.g. corn ethanol) to CO2 emissions from gasoline:

The full study was just published in the journal Climatic Change and is titled “Carbon balance effects of U.S. biofuel production and use”:

New record for Si photovoltaic module efficiency


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SunPower recently announced a 24.1% efficient Si PV module- a world record:

As noted in the article, this is very impressive, especially considering that the theoretical maximum efficiency for a single junction Si solar cell under 1 sun illumination intensity is ~ 29%.