Sat, Aug 20, 2011 - Page 9 News List

Can the ‘free’ power generated by the sun save flailing Greece?

Solar electricity exported to Germany has been touted as a panacea for both countries’ problems, but researchers say it will not be easy to strike solar gold

By Georg Zachmann

German Finance Minister Wolfgang Schauble has proposed that developing green-energy resources could be a good way for Greece to generate much-needed economic growth. On paper, it sounds like a perfect solution to the country’s dire fiscal problems: Greece, according to Schauble, could export solar electricity to Germany.

At first glance, monetizing an abundant natural resource such as solar energy to strengthen the national accounts sounds like a straightforward idea, particular given that electricity in central and northern Europe is becoming more scarce and expensive, owing to Germany’s decision earlier this year to phase out nuclear power. However, has Schauble really found a magic bullet to hold down German electricity prices while restoring economic growth to Greece? Yes and no.

First, the bad news: Electricity currently produced in photovoltaic installations is far from price competitive with conventional technologies. “Grid parity” — meaning that the cost of electricity produced by a rooftop solar panel is equal to that of electricity from the wall socket — will only be reached in the middle of this decade.

Even then, solar power will still be more expensive than conventionally produced electricity because “grid parity” excludes transmission and distribution costs, which typically account for about half of the final electricity price. Moreover, even if solar power were competitive, exporting it to Germany would not make economic sense: The required transmission lines do not exist and the power losses incurred in transporting electricity over long distances is a disincentive to building them.

Indeed, electricity prices in Germany are not systematically higher than in Greece, which nowadays is an electricity importer. As a result, Greek solar electricity would, above all else, merely replace more expensive conventional generation in Greece.

Even the reduced need for fuel imports — a quarter of Greece’s electricity is produced from oil and gas — would not have a large impact on the Greek current account. After all, because solar panels are unlikely to be produced domestically, they will have to be imported.

The problem, in a nutshell, is that solar-electricity production does not promise high returns. It is very capital-intensive and only a relatively small number of jobs would be created, for mounting the panels. Even if Greece were able to produce surplus solar electricity, exports would yield little revenue, because standardized technology means that companies and countries can develop almost no productivity advantage. As soon as solar electricity becomes competitive in Greece, other countries with similar levels of irradiation — Spain, Italy, Portugal, Bulgaria, etc — will enter the market. This will quickly drive electricity prices toward production cost, as solar-generating capacity in Europe approaches electricity demand.

However, while Greece cannot reasonably hope that large-scale deployment of photovoltaic systems will turn it into the Saudi Arabia of solar electricity, Schauble is right to point out that producing it in Greece makes more sense than producing it in Germany. Indeed, German support for solar power is aimed at lowering the cost of solar panels, which is the main justification for paying a high feed-in price — currently about 200 euros per megawatt hour, compared to current electricity prices of roughly 55 euros (US$78.78) per megawatt hour.

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