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Exactly --- the math just doesn't work. All of the opponents of Hu Honua are wasting their time complaining about increased traffic and the like --- instead, they should be demanding specifics regarding biofuel stock viability and long-term sustainability.

Not all Biomass is the same. Downdraft gasification uses 2 lbs of biomass for every KW. Place small units at the source and tie into the grid. High bred clumping Bamboo can yield 50 tons per acre. A self sustaining program.

I wonder if what is happening in the Gulf of Mexico would somehow factor into the cultural debate about geothermal. What are worst case scenarios for drilling geothermal wells?

Although respectful, I am not qualified to weigh in on the cultural debate. As far as worse case scenarios, I asked these questions -Earthquakes? They are not likely to damage the well, since the whole profile moves back and forth together. Many earthquakes in the last twenty years.
Lava coming up the well? They did hit lava several years ago. The lava came up a few feet then solidified, because the side walls were cool. There are no explosive gases. These were the main questions I asked and Don Thomas--geologist at UH answered to my satisfaction. Mahalo, Richard

Aloha Chalie:
Sounds intriquing. Is there a way of harvesting the bamboo in a labor efficent way? My friend did intensive cultivation of california grass for hay. He got 22 dry tons per acre. But, to get this he needed to apply 1,800 lbs of fertilizer annually. Ten years ago, he got $50 a bale. Which is the equivalent of $200 per ton. Today, its $300 per ton. Second generation biofuels need to get their feedstock between $40 and $60 ton to make everything work. Farmers aren't going to sell at $40 to $60 if they can get $300 per ton. Was it dry tons you were referring to? Aloha

Aloha Richard:

Bamboo program is via drip irrigation to control fertiliser, water etc. It has been reported to me that the cost is around $1,800 per acre per year. Under intensive cultivation with the population of 1000 plants per acre, the biomass yield starts from 3rd year @ 30 tonnes per acre and increases to 40 tonnes in the next year and stabilizes at 50 tonnes from 5th year onwards. Due to planting of genetically superior clones and following the precision farming practices, the biomass yield of bamboo is so high that the area required for energy plantation is reduced to 1/3rd, in other words biomass available from 3 acres from regular plantation can be obtained from 1 acre of energy plantation of bamboo. A well grown bamboo plantation is able to sequester close to 60 tonnes of carbon-di-oxide in every acre annually which is 60 CER for carbon trading.

Hemp and giant reed grow 25 tons per acre with no fertiliser, only climate and water are important. A major expense is transport of fuel. Biomass is low in calories per weight.

Has anybody seen a small 10-50 kwh boileer-turbine-generator assembly that would work well for the small land owner who could harvest and convert fuel to power with little expense?


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