Best of the Week
Most Popular
1. Stock Markets and the History Chart of the End of the World (With Presidential Cycles) - 28th Aug 20
2.Google, Apple, Amazon, Facebook... AI Tech Stocks Buying Levels and Valuations Q3 2020 - 31st Aug 20
3.The Inflation Mega-trend is Going Hyper! - 11th Sep 20
4.Is this the End of Capitalism? - 13th Sep 20
5.What's Driving Gold, Silver and What's Next? - 3rd Sep 20
6.QE4EVER! - 9th Sep 20
7.Gold Price Trend Forecast Analysis - Part1 - 7th Sep 20
8.The Fed May “Cause” The Next Stock Market Crash - 3rd Sep 20
9.Bitcoin Price Crash - You Will be Suprised What Happens Next - 7th Sep 20
10.NVIDIA Stock Price Soars on RTX 3000 Cornering the GPU Market for next 2 years! - 3rd Sep 20
Last 7 days
Dow Stock Market Short-term and Long-term Trend Analysis - 28th Nov 20
How To Spot The End Of An Excess Market Trend Phase – Part II - 28th Nov 20
The Gold Stocks Correction is Maturing - 28th Nov 20
Biden and Yellen Pushed Gold Price Down to $1,800 - 28th Nov 20
Sheffield Christmas Lights 2020 - Peace Gardens vs 2019 and 2018 - 28th Nov 20
MUST WATCH Before You Waste Money on Buying A New PC Computer System - 27th Nov 20
Gold: Insurance for Prudent Investors, Precious Metals Reduce Risk & Preserve Wealth - 27th Nov 20
How To Spot The End Of An Excess Market Trend Phase - 27th Nov 20
Snow Falling Effect Christmas Lights Outdoor Projector Amazon Review - 27th Nov 20
4 Reasons Why You Shouldn't Put off Your Roof Repairs - 27th Nov 20
Further Clues Reveal Gold’s Weakness - 26th Nov 20
Fun Things to Do this Christmas - 26th Nov 20
Industries that Require Secure Messaging Apps - 26th Nov 20
Dow Stock Market Trend Analysis - 25th Nov 20
Amazon Black Friday Dell 32 Inch S3220DGF VA Curved Screen Gaming Monitor Bargain Deal! - 25th Nov 20
Biden the Silver Bull - 25th Nov 20
Inflation Warning to the Fed: Be Careful What You Wish For - 25th Nov 20
Financial Stocks Sector ETF Shows Unique Island Setup – What Next? - 25th Nov 20
Herd Immunity or Herd Insolvency: Which Will Affect Gold More? - 25th Nov 20
Stock Market SEASONAL TREND and ELECTION CYCLE - 24th Nov 20
Amazon Black Friday - Karcher K7 FC Pressure Washer Assembly and 1st Use - Is it Any Good? - 24th Nov 20
I Dislike Shallow People And Shallow Market Pullbacks - 24th Nov 20
Small Traders vs. Large Traders vs. Commercials: Who Is Right Most Often? - 24th Nov 20
10 Reasons You Should Trade With a Regulated Broker In UK - 24th Nov 20
Stock Market Elliott Wave Analysis - 23rd Nov 20
Evolution of the Fed - 23rd Nov 20
Gold and Silver Now and Then - A Comparison - 23rd Nov 20
Nasdaq NQ Has Stalled Above a 1.382 Fibonacci Expansion Range Three Times - 23rd Nov 20
Learn How To Trade Forex Successfully - 23rd Nov 20
Market 2020 vs 2016 and 2012 - 22nd Nov 20
Gold & Silver - Adapting Dynamic Learning Shows Possible Upside Price Rally - 22nd Nov 20
Stock Market Short-term Correction - 22nd Nov 20
Stock Market SPY/SPX Island Setups Warn Of A Potential Reversal In This Uptrend - 21st Nov 20
Why Budgies Make Great Pets for Kids - 21st Nov 20
How To Find The Best Dry Dog Food For Your Furry Best Friend?  - 21st Nov 20
The Key to a Successful LGBT Relationship is Matching by Preferences - 21st Nov 20
Stock Market Dow Long-term Trend Analysis - 20th Nov 20
Margin: How Stock Market Investors Are "Reaching for the Stars" - 20th Nov 20
World’s Largest Free-Trade Pact Inspiration for Global Economic Recovery - 20th Nov 20
Dating Sites Break all the Stereotypes About Distance - 20th Nov 20

Market Oracle FREE Newsletter

How to Get Rich Investing in Stocks by Riding the Electron Wave

Why Buffett Bet A Billion On Solar Energy

Commodities / Solar Energy Jun 26, 2015 - 09:14 AM GMT

By: OilPrice_Com

Commodities Miles Per Acre Per Year

During the late innings of the ICE-age (as in the Internal Combustion Engine age) it has become clear that feeding gasoline and diesel to the next billion new cars is not going to be easy, or cheap. In China alone, 500 million new vehicles can be expected to jam the roads between now and 2030.

That may sound far-fetched but considering annual sales have already made it to 25 million units per year (vs. around 17 million in the U.S. – China became the top market in 2009), it only requires a 4 percent growth rate to reach that target in fifteen years.

The cost to operate an EV, per mile, is already well below the cost to drive a standard ICE-age model, and the advantage is likely to widen. The average U.S. residential customer pays 12 cents per kilowatt-hour (kWh), which means the cost to drive one mile in an EV is somewhat less than 4 cents. By contrast, at 25 miles per $3 gallon of gasoline, those miles cost 12 cents each.

Coal still supplies more power in the U.S. than anything else, with natural gas next. However, building more coal and gas power plants to make miles for transport is counter-productive if the game plan is to reduce carbon output.

Fortunately, abundant renewable power, is getting cheaper, while gasoline from finite fossil fuels may get more expensive. (Even after the fall in U.S. crude, gasoline in California costs $4 on average. At that price, California miles are 16 cents each. If you drive an SUV in Southern California those miles cost over 30 cents each.)

Even though not all renewables are created equal, power purchase agreements (PPAs) for PV projects with utilities in the U.S. Southwest are now coming in under seven cents per kWh for a twenty year period. At that rate, the cost to operate an electric vehicle is 2 cents per mile. Hydropower in Seattle will push you around for the same price. The first ‘eye-opener’ for large scale solar was the Austin Energy PPA last year that was priced at 5 cents. What this country needed was a good 5-cent kWh, and now we have it.

It is generous to say that an acre of Iowa can provide 12,500 miles per year at a cost of 10 cents each. (Average fuel efficiency in the U.S. is 22 miles per gallon (mpg). New cars in 2015 get 25 mpg.) An acre of corn that provides 500 gallons of ethanol, at 22 mpg, gives you 11,000 miles, or would, if such gallons had the same energy content as a gallon of gasoline.

Unfortunately, they don’t. Ethanol packs about 70 percent of the punch of gasoline, so you actually need 1.4 gallons of ethanol to get you as far as a gallon of gas. (Instead of 11,000 miles per acre for the average 22 mpg model, the figure drops to 7,850 miles per acre per year.)

But suppose your new car is up to current Chinese standards (~35 mpg). In that case, Iowa’s acres provide 12,500 miles in a year (17,500/1.4). This is still roughly two orders of magnitude less output per acre than Warren Buffett’s Agua Caliente array in Arizona. No wonder Berkshire Hathaway has already bet a billion on PV arrays. One could say that Mr. Buffett has not only seen the light but invested heavily therein.

Sunrise in the Desert

An acre of desert in Arizona, Nevada and many other places on earth ‘sees’ on the order of 3,000 hours of direct sun per year. (This amounts to 34 percent of the total 8,765 hours available, half being dark.) PV arrays on a house are spaced closely together and it is reasonable to figure 250 kilowatts (kW) per acre of aggregated rooftops. However, it costs more to build an acre of rooftop PV. On the ground the figure is closer to 150 kW per acre.

The biggest difference between rooftop and most of the utility scale arrays yet to be built is that it makes sense, when possible, to track the sun. Since not everyone can afford to build houses that track the sun, let’s just assume that all residential rooftop arrays will be fixed. In the commercial sector, and in the case of community solar, there is more flexibility and tracking arrays may make sense, especially when mounted on the ground.

The arithmetic is pretty simple. You get about 20 percent more yield by tracking the sun. A rooftop array is pointed directly at the sun (known as direct normal irradiance) only for a short while each day, assuming the roof pitch is right, and most aren’t. If it costs 1o percent more to get that 20 percent extra yield, do it.

Critics will say that more structure and added tracking motors and mechanisms will add to the chance of system failure. This, however, is a fallacy. Consider the venerable oil drilling donkey, which cycles once every 7 or 8 seconds. At this rate (480 cycles per hour, and 11,520 cycles per day), these ancient and effective oil rigs cycle more in a day than a tracking PV array in its 30-year lifetime. (365.25 days x 30 years = 10,957 cycles.)

An acre of desert PV will easily yield 300,000 kWh (150 kW per acre x 2,000 hours of direct normal sun) and a million miles per year for an EV. Since 2,500 to 3,000 hours are available in many places, the figure jumps to between 375,000 and 450,000 kWh per year, yielding between 1.25 million and 1.5 million miles per acre per year.

In other words, the output from (more expensive) ethanol is little more than a rounding error compared to the output from PV. The choice is between a million miles per acre per year, costing 2 to 4 cents each from the sun, or 10,000 miles per year costing 12 to 20 cents from a cornfield that would be better served making food.

Even if the figures were more supportive of the ethanol case, biomass in general does not scale very well. Silicon based PV, on the other hand, is hugely scalable and relatively cheap. It really isn’t a fair fight.

Image URL:

Image URL:

The calculation for rooftop solar is not quite as straightforward as multiplying the number of kilowatts by the number of hours of sun in a year. NREL has done the math on how many kWh you get from a fixed (non-tracking) array per day from a square meter depending upon location. It is roughly the measure of how many hours per day the panels will produce peak power. The US average is around four hours which means that,

For an individual homeowner, a 3-kW PV system in a less than arid region will still yield 4,000 kWh (3 kW x 4 hours x 365 days) and enough EV miles to cover the average annual 12,000 – 15,000 miles of commuting. Even at 15 cents per solar kWh (and, as mentioned, many PPAs are coming in at half that figure or less), you will save about 10 cents per mile over the gasoline price. The 5-year fuel savings will pay for a 3-kW system.

Chevron, ExxonMobil and Shell cannot stop this; they will begin to bleed trillions of miles per year. They had better think seriously about financing solar and wind arrays. The estimated one million EVs on world roads by the end of this year will cover roughly 10 billion miles per year, and over 100 million miles over their lifetime. What will ExxonMobil’s share price be when cumulative EV sales reach 100 million units?

EV Sales Worldwide (740,000 units)

Image URL:

By 2030, millions of people will have transport fuel that is ‘on the house.’ During the midday hours, many grids will experience negative pricing as solar PV floods the market to the extent that the power cannot be stored. As millions of EVs hit the road, four percent of the time, on average (the rest of the time they are in a garage or parked on the street), they will likely become the default destination for stored electricity.

When there are 100 million EVs, figuring 60 kWh batteries, the fleet will provide 6 terawatt-hours of storage, enough to run the U.S. (with 1,000 GW, or 1 Terawatt, of power capacity) at peak power for six hours, or the world (with 5 Terawatts of capacity ) for over an hour. If all the cars sold in the U.S. this year were electric, their battery capacity would be sufficient to power the country for an hour (17 million vehicles x 60 kWh). How many gigafactories will Mr. Musk have to build?


By Henry Hewitt for

© 2015 Copyright - All Rights Reserved
Disclaimer: The above is a matter of opinion provided for general information purposes only and is not intended as investment advice. Information and analysis above are derived from sources and utilising methods believed to be reliable, but we cannot accept responsibility for any losses you may incur as a result of this analysis. Individuals should consult with their personal financial advisors. Archive

© 2005-2019 - The Market Oracle is a FREE Daily Financial Markets Analysis & Forecasting online publication.

Post Comment

Only logged in users are allowed to post comments. Register/ Log in

6 Critical Money Making Rules