RENEWABLE ENERGYA VIABLE OPTION

DR.S.P.GONCHAUDHURIINDIA

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The total installed renewable power capacity is increasing at a brisk pace. The worldwide potential of renewable power is enormous.

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World wide potential of different renewable energy sources

However, worldwide Renewable Energy Consumption is still low. Again contribution of New Renewable (Solar, Wind, Geothermal) is

significantly low in the overall RE consumption.

Structure of Global Energy Consumption

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The Scenario is changing rapidly. The New Renewables comprising of Solar Energy, Wind Energy, Bio Energy, Geo thermal Energy etc are being utilised very agressively throughout the World particularly from Climate change point of View.

The major influencing factor :

• Unpredictable rise in fossil fuel price.• Pressure from Environmentalist for mandatory use of RE sources by

various countries.• Public pressure to electrify all the Rural areas of developing

Countries where more than a billion people live without electricity (Asian and African countries).DDGs are the only options.

• Cost of Solar PV coming down significantly.

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INDIAN CASE STUDY:

Half a billion people of India do not have access to electricity

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Interestingly the cost of light (based on illumination) or electricity based on liquid fuel (conventional) or cost of electricity at a remote off-grid area is very very high but actual pricing has never been calculated due to political reason.

Example:- In India Cost of Electricity in many remote villages exceeds $1.0 per unit but utilities supply the same at $0.10/unit. Side by side worldwide average Solar PV electricity cost is $ 0.30 per unit (off-grid) and $0.20/unit for grid connected.

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VIABILITY ISSUE:

This indicates Solar PV or Biomass based Power which is cheaper

than Solar are already financially viable options.

SOLAR PV BIOMASS

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The Grid Parity Scenario in India

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The projected cost of Coal-based electricity without considering environmental cost is found to be much higher now than what was envisaged due to imposition of various taxes and duties which vary from Country to Country. This indicates grid parity likely to be achieved by 2015.It is predicted Worldwide transition from fossil fuel to Solar power will start thereafter.

In India annual increase of Coal price was only 5-7% in 1990s. However, this has exceeded 30% in the last decade.

The liquid fuel price has exceeded by more than 200% in the last decade.

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Out of many form of New Renewables, Solar Energy and Wind Energy appear to be most attractive (Particularly Photovoltaic).

A Large Size Solar PV Plant Of India Wind Farm Project (10 MW)

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GEO-THERMAL PROJECT A 10MW BIOMASS PROJECT IN INDIA

The Solar Photovoltaic (PV) sector has witnessed a boom over the past decade. In 2010, the PV market added a remarkable 16.6 GW to reach a cumulative installed capacity of roughly 40 GW world wide, producing nearly 50 Tera-watt hours of electrical power.

EU contribution is significantly high in the Solar market though Countries like Japan, China and India have ambitious program. The global installed capacity of Solar PV will cross 100GW by 2015 bringing the cost further down.

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Future Prospects: The future for the RE sector looks promising. Increasing uncertainty regarding fuel supply is prompting all the Governments to rethink the future of the energy mix and this is definitely working in favour of RE more viable.

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Alternatives are now available for Coal,gas and oil. The need of the hour is to use such sources for a better future.