Redesign the Paradigm

In the previous blog, A Call For The Transition To Renewable Energy  it was discussed that industrialized nations of the world will soon have to address that a world energy crisis driven by demand from developing countries is looming within the next 25 years. Fossil fuels alone will not be able to meet demand. The easier to extract surface sources are rapidly becoming exhausted requiring more difficult and environmentally damaging drilling and mining procedures that are both more time intensive and expensive. The increased costs of energy and potential shortages can create more geopolitical stresses between countries as they scramble to meet their energy demands. It is beyond time to ramp up existing renewable energy sources (biofuels, solar thermal, photovoltaics, wind, geothermal, tidal, and biomass) to supplement fossil fuels over the next 25 years while actively searching for long term, highly efficient energy systems to transition into beyond 2035.

The liquid fuel transportation sector is dominated by petroleum which is refined into gasoline, diesel, and jet fuel. The transition process in this sector would involve escalating biofuels production in order to supplement future petroleum demand. Cellulosic ethanol can be economically derived from gasification processes and will represent the most cost effective and efficient production means of ethanol production. It also doesn’t compete against food crops, requires much less water, and can be attained from a multitude of carbon based sources including the unusable residue from crops, natural fast growing grasses and plants, disposable wood from logging, and even human waste. Increasing the additive rates of ethanol in gasoline up to E30 (30% ethanol / 70% gasoline) and providing government subsidies for fuel line conversions will contribute significantly to mitigating demand and reduce the chance of rampant  price increases due to regional gas shortages.

Diesel fuel necessary for commercial transportation (large trucks and ships) can also be supplemented by biofuels, in this case utilizing bio-algae, jatropha, and halophytes to create bio-diesel.  Microbial organisms can be used during the processing to increase yield and refinement efficiencies and reduce costs. Diesel blends up to B30 (30% biodiesel / 70% petroldiesel) can be attained without major modification in fuel lines. World governments can then provide similar subsides for fuel line conversions to trucking and shipping fleets. Jet fuel blends can be supplemented with bio-algae; the U.S. military and some commercial airlines have already taken keen interest and developed prototypes for this application.  The goal is to supplement petroleum based diesel and jet fuels with biodiesel which will mitigate demand and reduce the chance of price increases in commercial transportation which adversely affects consumer goods pricing and airline ticket prices.

In addition, supplementing petroleum based fuels should be done in unison with the generation of new hybrid (gasoline/battery) or completely battery based automobiles and light truck production over the next 25 years. Battery technology and high capacitance systems need to be elevated in importance and additional government funding for research and development put in place to provide economically viable batteries and ultra capacitors with greater yields and longer life capabilities. If necessary the patents held by the fossil fuel and aerospace defense industries need to be made available for public use instead of being put on ice as a potential threat of substitution to petroleum, or classified for military uses. Suitable battery technology may very well already exist but the public sector does not have access to it. Utilization of hybrid, battery, or high capacitance system will further reduce future demand for liquid petroleum fuels but will require increased demand in electricity production. Heavy trucks, trains, and ships used for commercial transportation require considerable power to move heavy loads. Battery and high capacitor systems are not currently able to provide adequate power to solely meet commercial transportation needs. They will be more reliant on hybrid systems and will require more energy from the biodiesel / petroldiesel blends than are required for cars and light trucks.

The unspoken and long term strategic goal of many developed countries appears to be to use up the petroleum resources of other countries while saving their own reserves for emergency or to sustain their countries liquid fuel needs decades from now.  This strategy needs to be scrapped and replaced with a new 25 year goal that includes drilling and refining the readily available global petroleum resources in combination with increases in cellulosic ethanol and biodiesel production, government subsidization for replacing fuel lines on existing personal and commercial vehicles,  and creating high efficiency hybrid, battery and high capacitance electric cars and light trucks for personal transportation, and hybrid biodiesel large trucks, trains and boats for commercial uses. Then by 2035, begin the process of transitioning into hydrogen fuel based transportation models for developed countries, while allowing undeveloped countries additional time to become petroleum independent. This means limiting expensive and risky deep water drilling rigs, shale extraction, and production of more oil refineries limited only to petroleum. All government subsidization for the petroleum sector should cease and be transferred to companies generating second (cellulosic ethanol), third (bioalgae), and fourth (high yield genetically modified plants combined with microbial catalysts) generation biofuels, and for the development of biofuel infrastructure. This would include refineries that can be utilized for both petroleum and biofuels.

Resistance from the very profitable petroleum sector will be considerable and OPEC nations will put up a strong fight even going so far as to temporarily drop oil prices in order to draw attention away from the need to transition to renewables and to save the petroleum industry’s future profitability. Excuses for why renewables are a panacea will flourish and will need to be set aside. Our next generation of automobiles may not run as fast, or have the same mileage capability, but they will be clean and reduce our reliance on a polluting fuel source that has created enough geo-political instabilities and wars already. This 100 year old technology is past its prime and the world is certainly capable of doing better. The reason fossil fuels have been held in place this long as our dominate source of energy is because of the massive profitability and wealth generation it provides for a small percentage of the world’s population and not for its current benefit to humanity.

The other half of the fossil fuel equation is electricity production which is provided by coal and natural gas. Electricity production actually requires more fossil fuels than the transportation sector and demand is projected to outpace petroleum and will be further increased by the need for hybrids, electric, and high capacitance vehicles all of which will draw additional power from the grid. The transition of this sector, over the next 25 years, should be a move towards the existing renewable energy sources of solar thermal, photovoltaic, wind, tidal, geothermal, and biomass facilities. Biomass which uses carbon based refuse (forestry, crop, animal, and industrial) and wastes (sewage and municipal solid) will be the only source that requires commodity based replenishment that could be subject to price fluctuations, but this resource will be derived from throw away material.  The transition process itself can begin with the removal of coal and natural gas subsidies and strict limitations on future coal or natural gas power plant production. One such limitation could require no more coal fired plants built without adjacent bio-algae photo bioreactors for algae based biodiesel production and CO2 sequestration. Instead, funds could be allocated to infrastructure development of large solar thermal, geothermal, tidal and wind generation systems. Subsidies should also be provided to business and homeowners to put photovoltaic arrays on their premises.  If regional electricity service providers heavily vested in coal and natural gas production want to continue as public electricity providers they will need to be required to build an increasing number of energy facilities that are completely renewable in nature. Some renewable energy plants are more expensive to construct than traditional coal and natural gas facilities, certainly the case for large solar thermal operations. However, over the 25 year life span of the facility the infrastructure costs become offset within a few years since there are no ongoing requirements for expensive and environmentally damaging drilling, mining, refining, and distribution expenses associated with acquiring oil, coal, and natural gas.  Renewable energy power plants will be cheaper for developed and developing countries in the long run, providing clean energy, and not require purchasing or extracting fossil fuel commodities from potential hostile countries.

Synergies exist between complimentary renewable energy sources and with existing fossil fuel sources. Large megawatt solar thermal facilities can be designed to provide power for cities, or smaller solar thermal power plants can be utilized for neighborhood or suburb electricity generation.  Residential and commercial photovoltaic arrays with government subsidies to assist business and resident affordability can be utilized in conjunction with solar thermal (or other renewable energy sources) to help reduce the regions demand. Solar thermal, geothermal, and wind farms can share space with bio-algae photo bioreactors (PBR’s) to reduce land costs and reduce space requirements.  Biofuels can be generated from sewage, waste material, food crop residue, and wood residues creating fuel sources from material that would otherwise be burned or sent to landfills. Fast growing and drought resistant plants requiring little irrigation can be grown and harvested on lands unsuitable for crops and utilize husks, stovers, and other discardable material from traditional crop harvesting.  All existing coal fire and natural gas plants could have bio-algae PBR’s in place to absorb the CO2 that would otherwise be released into the atmosphere. In developed countries all new power plants should be renewable where possible and only natural gas if not. Coal plants should only be considered for poorer developing countries with large coal reserves.  

A new paradigm for worldwide renewable energy production can be implemented where profitability expectations are removed from future State owned and privately held renewable energy companies.  In countries with a private sector, existing renewable energy companies could be incentivized by their governments to switch to a strictly non-profit model. Another option is the creation of new private non-profit renewable energy companies with infrastructure development and scaling subsidies provided by their governments that would allow them to provide energy at lower costs to consumers and compete directly against for-profit renewable energy (and fossil fuel).  If full government subsidization is not possible then 0% infrastructure and scaling loans could be made available with repayment plans established that assure competitive energy pricing remains available to the public.  State owned energy companies with little incentive to eliminate their profit structure will still be able to provide energy indigenously and to the developing nations but in time will be hard press to remain competitive outside their own borders.

The goal of the non-profit renewable energy provider is to be able to produce and distribute electricity in the most efficient and low cost manner possible and to pass those savings onto their customers. It is also to provide energy sector jobs to replace those jobs lost from the fossil fuel industries.  Favorable government legislation and subsidization for private sector non-profits will be essential to ensure political barriers to entry are removed and to meet infrastructure costs and to develop economies of scale.  Subsidization can come from removing subsidies provided to very profitable oil, coal and natural gas companies and from tax revenues associated with providing clean energy. A non-profit model focused on efficiency and removing unnecessary expenses associated with pay for performance executive compensations, investor ROI expectations, profits for mining and drilling operations, costs related to exporting of fossil fuels, and short sighted profit maximizing decision making will be removed from the future energy equation.  I am not advocating government takeover of the western energy industry, but the establishment of true non-profit private companies in the free market economies. For already established state owned companies heavily vested in fossil fuels my hope is they will eventually operate under the same non-profit guidelines as they to transition towards renewable.  This should also decrease geo-political instability in certain regions of the world that use energy profits to sponsor terrorism or as funds to support military buildup and wars.

It is time for world governments especially those in developed countries with free market to start acting responsibly and considering its citizens. Energy is a basic requirement for all societies and the world has been limited to technology and policies that are outdated and no longer in its best interests. The question of how to pay for the transition to renewable energy is legitimate. Whether governments should increase taxes or use existing tax dollars to subsidize renewable energy infrastructure and provide assistance for companies to scale up production will be debate and heavily resisted from many channels. Interestingly enough, funding didn’t appear to difficult to acquire when it was necessary for bailing out irresponsible financial companies or providing massive subsidies to the ridiculously profitable fossil fuel industry. Fossil fuel based companies know they will eventually have to venture into the renewable market as oil, coal, and natural gas become to scarce or expensive. Why should the world wait until governments are near financial collapse due to high energy costs affecting nearly every sector of their economies, or countries are on the brink of war due to scarcity and conflicts over meeting demand?

Prior to 2035, world governments, academia, and even private sector labs should have been be utilized to search out the most promising energy sources with the greatest efficiencies that will meet the world’s long term energy needs. The push should be to develop free or extremely low cost energy systems such as fusion or kinetic systems for electricity production, and a hydrogen based fuel source for vehicles. We must begin this researching process and planning for this process now.

http://www.eia.doe.gov/oiaf/ieo/highlights.html

How is it that our scientists and technologies have created exponential growth in computing, super colliders, nano-technology, particle weaponry, world-wide satellite coverage, etc. and yet for energy production we are limiting ourselves to a polluting, 100+ year old technology that creates geo-political instability around the world and has most recently become subject to the whims of commodities traders?

Industrialized nations of the world will soon have to address that a world energy crisis driven by demand from developing countries is looming within the next 25 years. The bulk of the energy industry’s production motives which are dominated by fossil fuels and its obsession with profitability are not going to provide the solution for our upcoming energy problems. World energy producers have become very efficient at extracting, processing, refining, and distributing petroleum for transportation liquid fuels, and coal / natural gas for electricity production. However, production will not be able to keep pace with the growing world wide demand expected to rise almost 50% by 2035, much of that coming from the developing countries of China, India and in Southeast Asia. This is not a matter of peak oil or how much fossil fuel remains in the ground, but an issue of simple supply versus demand.

Fossil fuels have served our world’s growing energy needs extremely well, despite the fact that oil and coal use has been around since the turn of the 20^th century, but we are fast approaching the limits in improvements that can be expected from production capabilities. In addition, the easier to extract surface fossil fuel sources are rapidly becoming exhausted requiring more difficult and environmentally damaging drilling and mining procedures that are both more time intensive and expensive. The increased costs will be passed on to end users and when combined with potential shortages will create stresses between countries scrambling to meet their own energy demands,  this may even include going to war to guarantee energy  stability. This scenario can be further complicated by fossil fuel commodities traders who take advantage of regional problems to run up prices. This is an excellent formula for State owned or privately held oil companies interested in ensuring ongoing profits for decades, but not for the rest of the world.

There is also the matter that the regions containing fossil fuels are not only proving to be environmentally difficult to work in but geo-politically hostile as well. Many countries rich in fossil fuels (ie. Middle East and African countries) also divert funds to groups and organizations that sponsor regional unrest and acts of terrorism or can use earnings to build up military capacity and develop weapons of mass destruction.

We are fast running out of time to seriously implement existing renewable energy sources (biofuels, solar thermal, photovoltaics, wind, geothermal, tidal, and biomass) as a supplement to fossil fuels over the next 25 years while actively searching for long term, highly efficient energy systems to transition into beyond 2035. The industrialized countries of the world and their private or state owned energy companies are going to have to set aside their fossil fuel based profitability expectations for energy production and begin thinking in terms of transitioning. This will not be done willingly, these companies and their holdings represent significant infrastructure investments and they are cash cows, in many cases representing the only significant source of income for the region. In countries with capitalism based economies the lobbying stranglehold the fossil fuel industry holds over energy legislation will need to be removed, and campaign contributions that help elect sympathetic representatives curtailed if there is to be any significant infrastructure support from those governments.

This process will have to be driven from the free market economies since State owned companies with large oil reserves will have little incentive to transition on their own since they can meet their domestic demand, and fossil fuels represents a substantial income source for the country and they will profit off of the projected 84% expected increase in demand from developing countries over the next 25 years. This sharp increase in demand will be buffered by developing countries themselves as S. America, China and India are currently taking their own measures to implement renewable energy sources realizing their own vulnerabilities. Even if these developing countries begin the transition process to renewable energy sources, State owned companies will be needed to fill the remaining projected demand. Privately held companies in the U.S., Canada and Europe can then be utilized to meet remaining 16% growth expectation from the developed countries with fossil fuels and renewables.

Existing renewable energy processes need to become more efficient and costs brought down through economies of scale. The purpose for expansion of these renewable sources is to increasingly supplement fossil fuels over the next 25 years.  This must become mandated. In addition, new technologies and system improvements investigated and existing patents that have been shelved to protect fossil fuels from competition should be re-evaluated. Their feasibility and economic viability analyzed, and those with satisfactory efficiencies implemented. World governments cannot immediately dump existing fossil fuel systems since renewable capacity falls far short of meeting demand. In addition, current levels of debt among industrialized countries are already to burdensome due to the irresponsible behaviors of governments and their financial leaders to sufficiently generate new infrastructure in a timely enough manner. We can however begin to aggressively supplement fossil fuels consumption with renewable energy sources in the industrialized worlds. This will allow the poorer developing countries to continue to use predominately fossil fuel sources while they implement renewable energy infrastructure themselves. This may require years of transitioning so it must begin now.

World energy demand can become as significant an issue as the 2008 world wide collapse of the financial markets and generate long term recessions. I would like to emphasize this point once again; regardless of how world fossil fuel producers try to ramp up production they cannot meet global demand. For the transition period over the next 25 years we must utilize all sources of energy and start the process of relinquishing the political stranglehold that the fossil fuel industry holds in the political arenas.

By 2035 renewable energy sources should play significant role supplementing fossil fuels and contributing towards global demand. During this transition period research and development initiatives from world government’s, academia’s, and even government funded and private sector laboratories’ should be utilized to search for new energy sources and refine existing systems for still greater efficiencies. Possibilities for new energy systems include hydrogen, advance fuel cells, new battery or high efficiency capacitors for transportation requirements, and fusion reactors and kinetic energy systems combined with advancements in solar, geothermal, wind and tidal power for electricity generation. 

The goal after 2035 is not to supplement fossil fuels but replace them. The motivation to look for energy systems that provide ongoing streams of company profits and investor return will have to be put aside and a new generation of non-profit energy providers created. Profit maximization will then be replaced with production efficiency and providing free or extremely low cost energy to end users. Research for these next generations of renewable energy systems must begin now with long term plans designed for the transition.

My next blog will discuss procedures necessary to implement the transition process to renewable energy sources in both the transportation and electricity production sectors.

http://www.eia.doe.gov/oiaf/ieo/highlights.html

Solar thermal may represent a viable way to reduce the consumption of fossil fuels, but what will the cost be to implement the required infrastructure for the power facilities and grid connections, some of which may be required in isolated areas?

The U.S. produced 4,119,388,000 megawatts and consumed approximately 3,978,000,000 megawatts of electricity in 2008.  Production of electricity breaks down as follows:

• 1445 Coal generation plants represented 48.2% of electricity production providing 1,985,801,000 megawatts.  
• 3768 Natural gas processing plants represented 21.4% of electricity production providing 882,891,000 megawatts.
• 104 Nuclear power plants represented 19.6% of production of electricity production providing 806,208,000 Megawatts.
• 3966 hydro electric plants represented 6% of production of electricity production providing 254,351,000 megawatts.
• 2576 Renewable energy plants represented 3% of electricity production providing 126,212,000 megawatts.  (Renewable sources included biomass, wind, wood derived, geothermal, and solar thermal / photovoltaic)
• 3768 petroleum power plants represented 1% of electricity and 46,243,000 megawatts.
• Other gases and their power facilities represented .25% of electricity production providing 11,707,000 megawatts.

Solar thermal even when combined with photovoltaics produces less than 1/20^th of one percent of U.S. electricity production.

Solar thermal energy (STE) systems utilize high temperature collectors that reflect concentrated sunlight collected from mirrors or lenses. The resulting solar radiation (heat) is focused to specific collection points. A liquid medium is passed through collection points where it is heated. This heated fluid can be used to produce steam necessary to drive a turbine used to produce electricity. 

Most of the electricity today is still provided by steam turbines. STE systems are no exception. Traditional steam turbines have efficiencies approaching 40% with temperature conversions below 600 degrees. Above 600 degrees gas turbines can be utilized with even better efficiencies, but the highest temperature conversions are possible with liquid fluoride salts, molten salts, or synthetic oils and are approaching 800 degrees providing up to 50% efficiencies.

There are a number of STE design systems. Parabolic trough designs are currently the most common type  utilizing curved mirrors to reflect solar radiation into a pipe which contains the fluid and runs the length of the trough usually just above the collectors. Other designs include Power Tower designs or heliostat designs have arrays of flattened movable mirrors that focus solar radiation on a collection tower.  Dish systems implements a large parabolic dish that focuses sunlight on a collector positioned just above the dish. Linear Fresnel reflector designs use a series of slightly curved mirrors to focus light onto linear receivers located just above the mirrors.

STE plants need to be able to produce electricity in overcast conditions and in periods of darkness. This is possible via thermal storage mediums which store heat in an underground basin for later use. These mediums include molten salt storage commonly called saltpeter, graphite heat storage which use purified graphite, and organic or inorganic phase change materials.

There are a variety of proposed plants set for construction in the next few years. The world’s largest single planned solar thermal plant, a 340 MW facility, will be started in Arizona by the end of 2010. It will utilize parabolic trough design reflecting concentrated sunlight to a narrow tube containing synthetic oil that will be heated to 800 degrees before being pumped back to a central power block where steam will be produced to drive a turbine.

Molten salt will be the storage medium that will be heated and stored for night time use; allowing the facility to continue generating power when the sun is not shining. This will also help reduce water requirements in the arid desert environment.

A 340MW power plant regardless of type (coal, natural gas, hydro-electric, or solar) could in optimum conditions produce 340 x 24 x 365= 2,978,000 MW per year of electricity. This is contingent on the power plant running 24 hours per day, all year, without down time. For the proposed Arizona plant it means the heat retained in the molten salt must provide the same levels of steam for electricity generation in periods without direct sunlight as the heated synthetic oil during daylight hours.

The cost of comparable coal fired power plant can easily exceed one billion dollars while similar natural gas plants are pushing 700 Million. Costs for both types of power plants have been increasing significantly over the past decade.

If the United States were to be solely converted to solar thermal it would require 1383 of the 340MW plants schedule for construction in Arizona. Those STE systems would cost approximately $2.76 trillion dollars at current levels and require years to build.  Building the power plants would not be the only expenditure involved, electrical grid infrastructure will be necessary to connect the facilities to end users since most of the facilities may be in the  isolated areas of the southwest. Above ground power lines run approximately $10 per foot and up to 10 to 15 times that amount is buried.

This cost might seem ridiculous initially and from a short term position it probably is.  However, projected over 25 years the costs to build coal fired or natural gas plants are projected to continue to rise substantially while solar thermal facilities have yet to enjoy lower construction costs associated with the mass production of components. In addition operation costs for coal and natural gas are projected to increase further reducing the initial infrastructure costs.  STE designs will require ongoing maintenance and repairs as with all forms of power plants maintenance but will not require ongoing exploration costs, mining / drilling expenditures, and require distribution networks / pipelines to move the raw material to processing facilities.  These additional costs over time will overshadow initial infrastructure savings.

STE is also a completely clean source of energy releasing no pollutants and has a net zero carbon footprint. Coal and natural gas release considerable amounts of CO2 and a number of pollutants. Energy demand in the U.S. and especially worldwide will continue to grow and the more traditional fossil fuel plants built will contribute ever increasing amounts of greenhouse gases and pollutants.

The U.S. has other renewable non polluting options available so a 100% conversion will not be necessary. Combinations of renewable systems such as STE’s combined with bio-algae photobioreactors can be used in the same isolated areas and in close proximity, reducing land costs and the expense of running electrical power lines to separate facilities. Smaller STE plants can be positioned close to urban areas allocating power to sections of a city or suburbs.

STE may be initially expensive but remains one of the few truly clean power supply’s available.  Its current infrastructure development costs are on par with nuclear power plants but without the nuclear radiation storage issues or having to purchase uranium from volatile countries. These prices, as previously mentioned, will drop as more cost efficient technology and mass production takes hold. Once the facilities are built they will provide clean power for decades with only maintenance costs. If we cease building fossil fuel and nuclear power plants in favor of STE’s, geothermal, wind, and tidal facilities and start to slowly phase out older fossil fuel plants the U.S. can begin a slow but deliberate move towards sustainable energy.

http://en.wikipedia.org/wiki/Solar_thermal_energy

http://www.renewableenergyworld.com/rea/news/article/2009/03/why-dont-we-bury-more-power-lines

http://www.eia.doe.gov/cneaf/solar.renewables/page/solarthermal/solarthermal.html

http://news.cnet.com/Shrinking-the-cost-for-solar-power/2100-11392_3-6182947.html

http://cleantechnica.com/2009/05/13/worlds-largest-solar-thermal-plant-340mw-planned-for-arizona/