Sometimes I think bloggers like me are the real dummies. We spend so much time delving into the minutiae of a stock or sector that we manage to obscure the big picture with too much detail. I've certainly been guilty of that particular flaw over the last couple years and want to offer an apology to readers I've confused rather than enlightened.
Yesterday a reader sent me a copy of a presentation that Exide Technologies (XIDE) used in its December 2010 Investor Meetings. The slide on page 6 of the presentation did a great job of separating the wheat from the chaff on the subject of vehicle electrification and clarified my thinking on several points I've been trying to make for a long time. Using Exide's presentation data as a guide, I'm going to see if I can finally nail down the economics in terms everybody can understand. I'm sure we'll hear from those who don't want to understand in the comment section.
The following table summarizes the operating capabilities, incremental costs, expected fuel savings and expected CO2 emissions abatement of the leading vehicle electrification technologies. For the baseline case I used a new car with 30-mpg fuel economy and anticipated usage of 12,000 miles per year, which works out to a basline gasoline consumption of 400 gallons per year. The numbers aren't spot-on accurate, but they're certainly in the right range. Since subsidies distort comparisons by shifting the cost of consumption from the buyer of a plug-in vehicle to the taxpayers who pay for the subsidies, I'll ignore them for purposes of this article.
My next graph uses the table data to show the comparative capital cost of leading vehicle electrification technologies per gallon of annual fuel saving and per kilogram of annual CO2 abatement. You can download an Excel file with the calculations here.
It doesn't matter whether you use fuel savings or CO2 abatement as your preferred metric. Vehicles with plugs simply can't deliver anywhere near the bang for the buck that their simpler and cheaper hybrid cousins offer.
- In the four hybrid categories, the average capital cost per gallon of annual fuel savings is $24 and the average capital cost per kg of annual CO2 abatement is $2.24.
- In the two plug-in vehicle categories, the average capital cost per gallon of annual fuel savings is $46 and the average capital cost per kg of annual CO2 abatement is $7.25.
Cars with plugs may feel good, but until somebody repeals the laws of economic gravity they will never be an attractive fuel savings or emissions abatement solution.
Lead-acid batteries from Exide and Johnson Controls (JCI), supercapacitors from Maxwell Technologies (MXWL) and lead-carbon batteries from Axion Power International (AXPW.OB) are the only rational choices for stop-start systems and micro-hybrids. Lux research has recently forecast global production of up to 34 million vehicles per year by 2016. Since the growth of stop-start and micro-hybrids is being driven by pollution control and fuel economy regulations in Europe, the US and elsewhere, it's as close to a bird in the hand as most investors will ever find.
Mild and full hybrids have historically used NiMH batteries for their electric drive functions and lead-acid batteries for their starters. Unfortunately, the "M" in NiMH is the rare earth metal lanthanum and production restrictions in China will limit global ability to ramp NiMH battery production until alternate sources of lanthanum come on line. Due to the rare earth metal crisis, I'm convinced that mild and full hybrids will be a competitive market where lead-acid and lead-carbon batteries vie for a share of the down-market offerings while lithium-ion batteries and supercapacitors vie for a share of the up-market offerings. Since design and production decisions will ultimately be made by the automakers, I won't even try to forecast potential market penetration rates for the competing technologies.
Lithium-ion batteries from A123 Systems (AONE), Ener1 (HEV), Altair Nanotechnologies (ALTI), Valence Technology (VLNC) and a host of foreign manufacturers are the only technically feasible choice for plug-in vehicles. Since the basic economics of plug-in vehicles don't make sense to me, neither do the basic economics of their manufacturers and battery suppliers. I'm sure we'll hear from commenters who hold different views.
Disclosure: Author is a former director of Axion Power International (AXPW.OB) and holds a substantial long position in its common stock.