Showing posts with label Renewable Fuels. Show all posts
Showing posts with label Renewable Fuels. Show all posts

Thursday, April 17, 2008

Initiatives For Renewable Energy

Shyam Ponappa / New Delhi February 07, 2008

There is an urgent need to organize for solar power & biofuels in India

...We need a comprehensive and integrated, silo-busting, problem-solving approach. This is in contrast with coasting along on a post-feudal-colonial mélange of currents and tides, with the brigandage of opportunistic politics fed by our (the voters’) greed for short-term benefits, resulting in our grotesque populism...

...Our leaders acknowledge repeatedly that infrastructure is India’s great need. Yet, they take no steps to marshal forces to draw up a credible strategy and execution plan. This is what needs doing...

...We have to “engineer” our way ahead, i.e., take active steps to build and develop our solutions, not passively wait for something good to happen...


Recent developments in renewable energy, e.g., cellulosic ethanol and concentrating solar power, underscore the urgency of pulling ourselves together on these fronts.

Cellulosic Ethanol

At the Detroit Auto Show in January, General Motors made a startling announcement: it had invested in a biofuel startup. This startup, Coskata, is one of uber-investor Vinod Khosla’s bets in renewable energy. Coskata claims it can produce ethanol from cellulosic sources at reasonable cost. The feedstock can be woodchips, grass, straw and agricultural waste from crops such as corn and wheat, even plastic and other carbon waste such as old tires. Coskata’s process needs much less water: less than the volume of ethanol, not three to four times as for other methods. Argonne National Laboratory reports that the process generates 7.7 times the energy used, and reduces CO2 emissions by over 80 per cent compared with petrol. However, this is in the laboratory, and Coskata has to prove it can scale up. This is planned by 2011, starting with a pilot plant this year.*


Coskata converts feedstock using heat into synthesis gas or syngas, comprising primarily carbon monoxide, hydrogen, and carbon dioxide. This gas is processed by proprietary microorganisms to create ethanol and water. In contrast, other bio-fermentation processes usually create a number of complex alcohols in addition to ethanol. Coskata’s microorganisms reportedly have greater tolerance to impurities in syngas than processes that use chemical conversion. The ethanol and water are separated using a membrane technology that is estimated to cost only half as much as processes such as distillation. Overall, Coskata achieves the highest conversion efficiencies for ethanol.

Solar Power — No Rain In Spain

Southern Spain is known for its sunshine and scarce rain. Capitalising on this “deficiency”, Spain is becoming the leader in the revival of Concentrating Solar Power (CSP), i.e., focusing heat from solar radiation to generate electricity, pioneered in California. In the 1970s, nine solar thermal plants were built at Kramer Junction in the Mojave Desert to produce 354 Mw, then forgotten in the rush for fossil fuels.

Outside Seville in Spain, 600 reflectors focus solar radiation to the top of a concrete tower 40 storeys high. This is Abengoa’s Solúcar project, which converts radiant energy into heat, driving steam turbines that generate about 10 Mw of electricity at an estimated cost equivalent to $50-70 a barrel. The capital costs are high but the fuel is free, and there are no noxious emissions. Photovoltaic generation costs nearly double CSP, but has the advantage of modularity: small units can be used for individual homes, while CSP needs large amounts of capital and land.**





A different CSP design using parabolic troughs is used by Spanish company Acciona in a 64 Mw plant commissioned last summer near Las Vegas in Nevada.**


Relevance for India

These are instances of developments that deserve focused attention in India — another area where we have an urgent need to set about organising ourselves out of our chaotic ways. My aim — fond hope — is to initiate or precipitate action. Ideally, through an agglomeration of our imagination and ability, we will develop a sound process of analysis, goal setting, and then proceed with the follow through to achieve these goals. But we have to apply ourselves for this to happen; these are complex issues, and need informed analysis and decisions.
We need a comprehensive and integrated, silo-busting, problem-solving approach. This is in contrast with coasting along on a post-feudal-colonial mélange of currents and tides, with the brigandage of opportunistic politics fed by our (the voters’) greed for short-term benefits, resulting in our grotesque populism, in lieu of the much greater deferred gratification of pleasing cities and countryside with the appurtenances of proper governance: sidewalks and drains, transport, administration and order, hospitals and schools. We have to “engineer” our way ahead, i.e. take active steps to build and develop our solutions, not passively wait for something good to happen.
This applies across the board in the broadest “spatial planning” sense that integrates housing and land use at all levels with commercial, industrial, cultural and scientific activity, transportation, and all governance and infrastructure: water, sewerage, energy, communications. Infrastructure being the first level of enablement, it is an essential starting point.
Plan Outlays — Necessary But Not Sufficient

Our leaders acknowledge repeatedly that infrastructure is India’s great need. Yet, they take no steps to marshal forces to draw up a credible strategy and execution plan. This is what needs doing. Only money won’t do, because delivery systems and processes have to be developed, i.e. planned, then built from scratch.
Finance is certainly a requirement, but it is not the only one. Equally critical is coordinated implementation. This needs human resources and organisation, with the technology, systems and processes to make it work. All these must mesh in a goal-oriented organisational form in an enabling environment for good outcomes. This requires a combination of the regulatory aspects of government together with the social aspects of human dynamics, including the availability of trained people for production and delivery, and well-developed markets with all the necessary attributes, starting with demand. Therefore, funding is only one critical step.
Creating Institutional Delivery Systems & Processes

Our need is to create the requisite institutional systems and processes. This is probably best done with an open, collaborative approach — if we can pull it off. “Our need” means primarily for the government to act, and secondarily for all of us, given how we are set up. We — in all our spheres: private, corporate and governmental —have to do this ourselves, and stop hoping somebody else will do it for us.
No individual or single-domain point of view can do the job. Just as considerable national effort is directed at expanding India’s access to fossil fuels, there needs to be serious, coordinated effort by people with diverse skills and expertise to aggregate, analyse, present information on developments, and help make decisions in these alternative energy areas. We don’t need more government agencies, but we do need to configure a group to get the job done. The key is to aggregate the domain and process expertise — from existing ministries/departments, agencies and the private sector — focused on the purpose at hand.

Thursday, April 10, 2008

More energy for ethanol and biodiesel!




Shyam Ponappa / New Delhi September 01, 2005

Our need to use more ethanol and biodiesel for transportation is a no-brainer. The question is how best to do it.
With the current speculation on the potential of BRIC economies, one insistent question we face is: what could go wrong for India? My response, after acknowledging an upward trend for the foreseeable future, followed by the usual caveat about sudden blips from unexpected (and therefore unpredictable) crises that characterise emerging economies, is the infrastructure refrain.

I mean the risk of constraints created by insufficient energy, transportation, and communications facilities, and the ineffectiveness of an uncoordinated approach to the formulation and implementation of policies. Let us consider a subset of energy: renewable fuels for transportation from plant sources--biodiesel and ethanol.

According to press reports, biodiesel is coming along, although we have plenty to do to get to where President APJ Abdul Kalam is exhorting us. However, coordinated and concerted effort could certainly accelerate our usage of biodiesel, a necessary adjunct to investing in petroleum resources (diesel accounts for about a half of India’s nearly 100 million tonnes of crude import). Our use of ethanol seems to be languishing even more because of our diffuse, fragmented approach.

Having worked on an ethanol project in America, I think only institutional lack of capacity explains our lackadaisical approach to ethanol, whether for fuel or even for producing biodiesel, when other countries are moving ahead.

For instance, because of environmental concerns related to drinking water, ethanol has displaced methyl tertiary-butyl ether (MTBE), an oil-refining byproduct, in 19 states in the US as an additive to improve the octane rating of petrol and reduce pollutants.

California now has an ethanol blend of 5.75 per cent, while Michigan has 10 per cent and is considering 20 per cent. In India, although ethanol has been considered since the 1970s, it was only in 2002 that the then Petroleum Minister Ram Naik introduced a 5 per cent target in several states.

Recent steps taken by the ministry should help meet this target, but the world moves on: Brazil will increase ethanol exports not only to the EU, which is targeting 2 per cent this year and 5.75 per cent by 2010, but to California and Japan as well, while China builds for the long term.

Before we go headlong down the path of increasing ethanol production from sugarcane with its consequences for other crops, water requirements, etc. it would help if we did a life-cycle assessment, a comprehensive cost-benefit analysis, of consciously encouraging biofuels for transportation.

It would help greatly if the government did this using the competence of various lobbies as well as of neutral experts. This would bring together the oil industry, sugar/ethanol manufacturers, agriculture and silviculture experts, the various ministries, aided by consultants capable of using sound project management to assess all available material, such as the Planning Commission’s “Report on Bio-Fuels 2003”, inputs from TERI (The Energy Resources Institute), the Indian Institute of Science, Winrock International, etc., as well as from other countries. Surely we don’t need foreign companies to step in to make things happen?

Developing a long-term strategy for implementation deserves the attention of a team with the domain skills (technical, commercial, management, legal, and administrative) to evaluate the issues and formulate the way forward; we should not limit ourselves to a committee of politicians, administrators, and PSUs.

The aspects to be considered include:

- The benefits of renewable fuels, e.g. reduced oil imports, clean technology, energy efficiency (including controversies such as the arguments of Cornell’s David Pimentel), and carbon credits;
The choice of appropriate materials for ethanol and biodiesel: crops for ethanol, e.g. sugarcane, sorghum, maize, cassava, or other materials such as straw (Iogen) or cellulose, and for biodiesel, jatropha, pongamia, or algae. This relates to land use, availability, climate, water, fertilisers, other infrastructure/inputs, and time to market. Also, issues such as aspects of Brazil’s experience that are helpful, e.g. whether sugarcane is appropriate for India, given the land and water requirements, as pointed out by TERI years ago; policy aspects, such as subsidies and mandatory use, given the collapse of the sector during the 1990s;



- The benefits of distributed employment and income generation from the cultivation of jatropha and pongamia;
The detriment from renewable fuels, whether from emitting volatile hydrocarbons or from other effects such as crop substitution or water usage;


- The cost of exporting excess diesel and gasoline (and other products?) from inland refineries;

- The costs and benefits of modifying vehicles to use varying percentages of ethanol, or converting them to flexible fuels for petrol and biodiesel blends as prices and availability change.

An extensive search indicates no cohesive set of information on a coordinated approach to implementation. One has to struggle to find information. Integral use of the Internet for research as well as for dissemination of findings during the process, and for soliciting/inducting inputs not only at the point of a draft report but also along the way, should greatly improve the quality and usefulness of output.

It would also help institute better and more transparent processes as an effective way for policymaking and governance, e.g., there could be validation of an energy density table with energy by mass for Indian materials and conditions as in the table below, with the associated moisture, ash, demystification of the joules to BTU calculations, etc.

Table: Energy density of Materials

Material                   Energy Density
                              Mega Joules/kg
                             
Coal (bituminous)       >23.9
Ethanol                      29.7 (Wikipedia: 23.4-26.8)
Diesel                        45.3
Biodiesel                    37.8
Petrol (automotive)    45.8
Kerosene                   46.3
                                                                   (Various sources)

Our policy makers can then decide on a course of action after they have this team’s considered input. Otherwise, it will be another committee report consigned to gather dust.

We have to organise ourselves effectively for this, accepting the premise that our administrative systems are inappropriate for our needs (because of their lingering colonial focus on collecting revenues and taxes). We must focus on building long-term capacity with interdisciplinary integration, together with structures and systems that are more suitable for our needs.

This will help achieve an enabling policy framework for biofuels: a combination of policy aims, laws, regulations, procedures, institutions, and customary practices that reinforce each other: our systems, built for our strengths and compensating for our weaknesses.


Shyam Ponappa