Block’s Indicator of Sustainable Growth

by Ray Block

Preliminary figures of PV growth in calendar year 2009 by the European Photovoltaic Industry Association (EPIA) suggest that about 6.4 GW was installed worldwide last year reaching a total capacity of over 20GW (20,000 MW).

The growth, says EPIA, is particularly impressive given the weak level of demand at the height of the recession in the March quarter. A sizzling increase in global cumulative installed PV capacity is expected in 2010 by at least 40 per cent, with an annual growth expected to increase by more than 15 per cent.

The PV market survey firm Solarbuzz expects the first quarter 2010 to show global module production rising by 7 per cent, with a further 19 per cent in the second quarter. Thin film production is expected to account for 17 per cent of global shipments in the first half of 2010.

One word of caution is introduced with Germany, the largest PV market, which increased installations by about 3 GW in 2009 to a cumulative installed capacity of almost 9 GW will at some stage reduce the size of its gross-feed-in-tariff.

Italy is the second largest European market, with an expected 700 MW in 2009. Czech Republic also showed strong growth with 411 MW installed in 2009. Belgium, France, Portugal and UK showed positive growth. The 2008 leader Spain languished, as a result of the cap imposed by the government in 2008.

In other regions, USA achieved around 475 MW in installations in 2009, while Japan did even better with new installations of 485 MW. Promising markets in Canada, Australia, Brazil, Mexico, Morocco and South Africa are expected in future years.

The most exciting solar PV producer continues to be First Solar, now the largest PV module producer in the world, with Shyam Metha of Greentech Media (March 29 2009) demonstrating the profit potential of the solar market. First Solar is the dominant player in the thin film market specialising in (CdT) cadmium telluride.

Add these ingredients – high throughput (1,011 MW in 2009), competitive efficiency of 11 per cent, and industry leading cost. This is currently a sensational 83 cents per watt. A lot of the applied genius is due to investor/ entrepreneur Harold McMaster, who concluded in the early 1980s, that the “essential cost element of large area solar arrays was glass, and (he) could treat the actual solar cell as simply a different kind of coating on glass.”

Metha explains: “In other word, thin film PV represented a technology that could be manufactured using glass’ high throughput coating process instead of the slow, cumbersome batch process of traditional crystalline silicon wafer-based PV – an approach that had one hundredth the feedstock requirement.”