Solar power to go mainstream

2011-10-24 14:45

New York - Solar energy may finally get its day in the sun.

The high costs that for years made it impractical as a mainstream source of energy are plummeting. Real estate companies are racing to install solar panels on office buildings. Utilities are erecting large solar panel "farms" near big cities and in desolate deserts. And creative financing plans are making solar more realistic than ever for homes.

Solar power installations doubled in the US in 2010 and are expected to double again this year. More solar energy is being planned than any other power source, including nuclear, coal, natural gas and wind.

"We are at the beginning of a turning point," said Andrew Beebe, who runs global sales for Suntech Power, a manufacturer of solar panels.

Solar's share of the power business remains tiny. But its promise is great. The sun splashes more clean energy on the planet in one hour than humans use in a year, and daytime is when power is needed most. And solar panels can be installed near where people use power, reducing or eliminating the costs of moving power through a grid.


Solar power has been held back by costs. It's still about three times more expensive than electricity produced by natural gas, according to estimates by the Energy Information Administration.

But the financial barriers are falling fast. Solar panel prices have plunged by two-thirds since 2008, making it easier for installers to market solar's financial benefits, and not simply its environmental ones. Homeowners who want to go solar can do so for free and pay the same or less for their power.

In September, two of the nation's biggest utilities, Exelon and NextEra Energy, each acquired a large California solar power farm in the early stages of development. Another utility, NRG Energy, has announced a plan with Bank of America and the real estate firm Prologis to spend $1.4bn to install solar systems on 750 commercial rooftops.

Nationwide, solar power installations grew by 102% from 2009 to 2010, by far the fastest rate in the past five years.

Making solar affordable still requires large tax breaks and other subsidies from federal and state governments. The main federal subsidy pays for 30% of the cost of a residential system. When state and other subsidies are added, as much as 75% of the cost can be covered.

But prices of solar panels, the squares of crystalline silicon or thin layers of metal films that turn the sun's rays into electricity, are falling so fast that its advocates now credibly claim that solar will be able to compete with fossil fuels even when the federal solar subsidy shrinks by two-thirds in 2016.

The falling prices have made it easier for solar installers to raise the money needed to grow. And they've made solar power systems so affordable they can appeal to homeowners who want to save on their electric bill, not just reduce their environmental impact.


Some installers are teaming up with big hardware chains Home Depot and Lowe's in an effort to expose solar to customers who might not otherwise consider it.

"Awareness is still one of our biggest problems," said Lynn Jurich, co-founder and president of SunRun, which has a partnership with Home Depot.

Solar panel prices have been declining for years because of lower costs for polycrystalline silicon, the main raw material for most solar panels, and larger-scale manufacturing, especially in Asia.

In the last six months, demand has dropped sharply in Germany, the world's biggest solar market, in response to shrinking subsidies. This has created a global glut of solar panels and accelerated the decline in prices.

Solar panels, which are priced based on the amount of power they can produce during full sunshine, sold for $1.34 per watt in mid-September, according to data from Bloomberg New Energy Finance. That's down from $1.90 at the beginning of 2010. In 2008, they sold for $4 per watt.

The glut has been gut-wrenching for companies that make solar panels. Many of them remain profitable and are growing. But three US panel makers have filed for bankruptcy in two months, including Solyndra, a solar panel maker that received a $528m federal loan.

Falling profit margins are scaring investors. The stock price of First Solar Inc has fallen from $170 in April to $53.77. Suntech Power Holdings Co Ltd has fallen from $11 to $2.07 over the same period.

Small base

The Solyndra bankruptcy has sparked a political uproar. Republicans have accused the Obama administration of pushing for Solyndra's loan for political reasons and have used the bankruptcy to question Obama's plan to help boost the economy by subsidising clean energy projects.

The market will not get any easier for small solar panel makers. General Electric Co, Samsung and other big companies are entering the market. This should increase supply and bring down costs even further. GE announced this month that it would build the largest panel factory in the US, near Denver.

But what has been treacherous for solar panel makers has been a boon for companies that market and install solar systems, for companies that make electronics and other parts for solar systems, and for solar customers.

To be sure, solar is growing from a very small base. All of the panels now installed across the nation produce enough electricity to power 600 000 homes, or about as much electricity as one large coal-fired power plant.

There are 30 000MW worth of solar projects awaiting approval in the US, according to the American Public Power Association. Not all of them will be built, either because of regulatory or financial hurdles. But even if only half that is ultimately built, it would be five times what is already installed.

"We're going in the direction the planet and the industry needs to go," said Harris.

  • Sattva - 2011-10-24 14:57

    unfortunately, Solar panels, inverters, etc are still way too expensive in South Africa to make it worth our while ..... we need cheaper prices here !

  • fishycraig - 2011-10-24 15:24

    This is fantastic. What I am going to do is buy a dozen solar panels, set them up in Arizona and then run a 10 000 mile cable to my house. Now lets get the prices down in this country.

      cameronjohnprice - 2011-10-24 15:50

      and then I will run a cable from your house to mine..

  • Nicholas - 2011-10-24 15:50

    Bought myself a 80w (-+5A)pannel to play around with. It now powers my lights for my marine fish tank and is saving me around R80 to R100 a month. Total cost6 layout for paneal and inverter was R1300 so 1/2 way to ROI had a special.

      Reshan - 2011-10-24 16:19

      Heat pump for the geyser if you really want to save on bills.

  • Clive - 2011-10-24 16:33

    Potentially every building in South Africa can generate electricity. The problem in SA is the out outdated and pro Eskom regulations that bar homeowners from feeding excess power generated back into the grid. The idea in Europe is that during the day homeowners "sell" electricity to the grid and during the night "buy" electricity from the grid. Their are tremendous advantages to this not the least being is that homeowners generating their own power are spared the expense of having to purchase large numbers of very expensive batteries. Until SA emerge from the dark ages the vast potential we have in the sun will go untapped.

  • sven.gohre - 2011-10-24 19:22

    The cheapest form of sustainable energy, as well as the quickest from planning to implementation is Bio-gas. Instead of purifying sewerage to pump into rivers, Anaerobic digesters can be used to convert the waste to electricity and the waste can be used as fertiliser and soil enricher's, sadly, EISHKOM would never allow suburbs to build these type of plants, as it would mean that each and every community that installed one, would be able to disengage from the national Grid. The cost of building a 1,2 MW plant would be about R500,000 and would be able to supply the needs of at least 600 household electrical requirements.

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