Why solar/PV is good for India? An ISA perspective!

Recently, the India Semiconductor Association (ISA) held an educative briefing session on the potential of the solar PV market in India, which was conducted by Rajiv Jain, Director, Government Relations, ISA.

This meeting was held well before iSuppli issued a warning that there could be global solar sunburn in 2009! I am sincerely hoping that most of the points mentioned by ISA's Jain still hold good in the coming year, and that India really does well and takes off in solar photovoltaics.

The ISA's vision: To help make India an attractive global destination for PV manufacturing and a world leader in solar energy.

Starting with the basics of photovoltaics, he said that it is a package of solar cells used to convert energy from sun to electricity. In simpler words, photons from sunlight knock electrons into higher state of energy, thus creating electricity. The electricity can be used to power equipment or recharge a battery. A typical PV system mainly consists of a PV module, battery, inverter, controller and junction box.

Focusing on the technological landscape, he touched upon the two key technologies for solar: crystalline and thin film.

Crystalline silicon is said to be the most mature Si wafer technology, with the largest market share. Though, high on cost, it has a typical efficieny of 14-18 percent. Crystalline silicon is said to suitable for rooftop applications.

Thin film is nothing but thin layers of photosensitive materials on glass. It is currently on high growth due to silicon shortage, and very low on cost due to low material consumption. The efficiency is about 6.5-8 percent.

A third technology, nanotechnology, is the future technology for cost reduction. It is more in the R&D space as of now.

Present scenario for solar
So what's the present scenario? In 2007, of $71 billion invested in new renewable energy (RE) capacity globally, 30 percent was in solar PV. It is the fastest growing area in the energy sector, with a CAGR of 47 percent over the last five years.

Grid-connected solar PV has been high growth market segment in 2007 (50 percent increase). Also, 86 percent of the PV installations are largely in four countries, with Germany at 47 percent being the outright leader.

Market drivers are said to be attractive feed-in tariffs, national PV market development and acceptance, RE obligations through solar PV, access to cheaper mode of finance, manufacturing incentives as well as strong R&D.

Why solar for India
I have addressed this in an earlier blog post. Here's what Jain had to say, and it is mostly in line with the earlier discussions.

First, India has among the highest solar irradiance globally. It also has the best quality reserves of silica in Orissa and Andhra Pradesh. India has also established itself low cost producer and assembler of solar PV cells and modules.

The major challenges include attaining scale and integration for cost reduction, and, R&D for development of the industry.

Solar insolation in India
To start with, the daily average solar energy incident varies from 4-7kWh per m2. Next, we have multiple sites with solar irradiation >2000 hours per year. In contrast, Germany has 900-1,200 hours per year. Further, most parts of India have 300-300 sunny days in a year translating into a potential of 600GW. Also, potential in some states like Rajasthan is 35-40 MW per m2.

It is well known that the Indian semiconductor policy of 2007 has triggered off the now well publicized efforts in solar initiatives. The government of India has received 16 applications with investments envisaged at app Rs. 1,55,000 crores.

The investments in solar PV manufacturing exceed Rs 1,25,000 crores. Generation based incentives (GBI) are going to be key.

Potential market segments in India
There are quite a few, actually. In rural electrification, the government of India's target is to achieve 'Electricity for all by 2012'. About 18,000 remote villages will likely be electrified through RE. About ~25 percent of the remote villages, i.e., 4,500 villages, form a very viable market.

Next comes telecom back-up power! PV is a cost effective alternative to diesel generators (DG) for back up power for shorter duration, as DG based systems suffer from several disadvantages.

Another key market could be grid connected solar PV based generation. Current tariffs do not provide attractive IRR to developers. Decreasing system prices are however, likely to improve the economics.

Finally, roof based BIPV is said to be an alternative to reduce the cost of power procured by commercial buildings.

ISA's recommendations
The ISA has also made salient recommendations via its report on the industry. These include areas such as manufacturing: with an aim to encourage companies investing in 'Scale and integration', provision of capital subsidy to larger number of units, availability of funds at a cheaper rate, and an emphasis on R&D.

Also, the ISA has recommended that GBI be given for a tenure of 20 years, with the present period being 10 years. Further, it has suggested an accelerated depreciation along with the GBI scheme, and the availability of GBI for an unlimited capacity for a period of five years. The ISA has recommended an enactment of the RE Law requiring utilities to progressively increase power purchase from RE.

On its part, the ISA has been working with the government of India and various state governments as well. It has a sound rapport with concerned ministries - MNRE, DIT and NMCC.

The ISA has also assisted in the technical evaluation of solar PV proposals received in Fab City, Hyderabad. It has also drafted a semiconductor policy for the government of Karnataka, which should be out early next year, hopefully. The ISA is also working with several other state governments to promote the industry in their states.

The second ISA Solar PV Conclave is scheduled for November 2009 at Hyderabad.

Very good intentions, all of these! Now, for the Indian industry and the government to deliver, and walk hand in hand!!