Tag: agriculture

Down on the farm

20040612-CRW_0583.jpg An Italian olive grove and vineyard is on its way to becoming the world’s first carbon neutral farm (they claim). According to the BBC, the Castello Monte Vibiano Vecchio estate in Umbria is converting to electric vehicles (and biofuelled mini-tractors) and has installed a “solar filling station” designed by Austrian company Cellstrom, based on an array of solar panels feeding a “flow battery” – a new battery technology that allows greatly increased energy storage.

Depending on the amount of usage, the battery centre can store solar-sourced electricity for up to three days. They are working to extend that to 10 days and more, enabling the farm to continue operating through foggy days when the sun does not shine. It means that golf carts and electric bikes will become the key means of transport for farm workers and that they can all charge up at the battery centre.

Cellstrom estimates the farm can save 4,500 litres of petrol every year and reduce CO2 emissions by 10 tons.

According to Lorenzo Fasola Bologna, Monte Vibiano’s chief executive, it will take about five years to recoup the initial investment.

Flow batteries store negative and positive electrolyte solutions (based on vanadium salts) in tanks, and pump them through a reaction cell to charge and discharge. Energy storage is therefore linked to storage tank size, not the number of cells in the system. This makes them ideal as backup storage for wind and solar energy generation, making the energy available even when the sun’s not shining or the wind’s not blowing. New Scientist has a good backgrounder here (behind a paywall, sadly), and there’s also information on the Cellstrom site. Another company in the field is VRB Power Systems of Canada, who have been working with Australian-developed technology.

Back in Umbria, the Italians are covering all their carbon-neutral bases by planting 10,000 trees to mop up any excess emissions.

By the end of next year they hope to be the first farm, anywhere, to reduce their inherent net carbon footprint to zero – ie without using off-site offsetting projects. “It will be great,” says Lorenzo, “to pass on this great, green enterprise to my children and their children.”

Chez Hot Topic we have a vineyard and an olive grove, and I’m already planting trees to offset at least some of our emissions. I wonder if there’s a flow battery in an off-grid future down on our farm?

[Title reference]

Catch a (micro)wave

carbonscape.jpgThere are some amazing people in NZ. Just when I’m tearing (what’s left of) my hair out at the idiocy of some politicians, along comes a news story to gladden the heart of anyone living in the real world. Yesterday, Blenheim-based start-up Carbonscape reported that it has just begun batch production of charcoal in a microwave oven the size of a double garage. Wood waste goes in at one end, the oven heats it up and it turns into charcoal – giving off syngas, a mixture of hydrogen and carbon monoxide. The charcoal can be added to soil (as biochar, aka terra preta), fixing the carbon away from the atmosphere and improving soil fertility, while the syngas can be burned to create energy to drive the process – known as pyrolysis.

Carbonscape call their oven the Black Phantom, Stuff reports:

Continue reading “Catch a (micro)wave”

The green green grass of home

Back at my desk briefly (it’s a hectic week), some catching up in progress. The Going West panel session on Saturday morning was fun to do, and well received. There will be a recording available (for download, I hope) and I’ll link to that if/when it’s available. The climate change legal summit in Te Papa was a fascinating couple of days, with excellent speakers. Some of it was fairly dry stuff, as you might expect when considering the legal minutiae of carbon trading, and how the ETS might interact with the RMA process, but there were really useful sessions on dealing with greenwash, checking out the quality of offsets, the pitfalls of carbon trading, and so on. Highlights for me were Judge Shonagh Kenderdine on how climate change is being treated in the Environment Court (with special reference to sea level rise), Karen Price on the process (and contractual pitfalls) of carbon trading, and Professor Martin Manning on climate science and politics. Prof Manning had some interesting thoughts on targets – which luckily for me, reinforced the message I’d given in my morning introduction. There were also interesting and challenging presentations on agriculture and its future from Guy Salmon and Chris Ward (Hort NZ). All good stuff: would be great if it could find a wider audience, because this is where the real debate about climate change is – dealing with it, and moving forward.

In the (rural) ghetto

cow.jpg It’s no secret that Federated Farmers doesn’t like the proposed Emissions Trading Scheme. But their latest press release (which almost slipped under my radar over the weekend) sets a whole new standard for ridiculous hyperbole. According to Feds president, Don Nicolson, the ETS will be so damaging that it will create “rural ghettos”. Here’s Don in full flow:

“If we want to try and remain a first world country, rather than a third world country, the simple fact is, we need agriculture to prosper and grow. We can’t afford to kill New Zealand’s golden goose. If we do, we will have rural ghettos and a lower standard of living for all New Zealanders. Here’s hoping we don’t kill the golden goose and develop rural ghettos.”

Let’s ignore the fact that agriculture is excluded from the ETS until 2013, and will be treated with kid gloves thereafter. Let’s not mention that it amounts to a subsidy from the nation’s taxpayers to the agricultural sector. Let’s pretend that farmers are going to forced into penury by the ETS, that we can somehow afford to ignore the global move to put a price on carbon. Let’s just have a loud and ludicrous public whinge.

Thanks for the cogent policy advice and intelligent lobbying Don. Don’t give up the day job.

Paint it, black

Paintitblack.jpg Interesting to see how one opinion poll can say different things to different people. Over the weekend, Fran O’Sullivan in The Herald referred to a survey commissioned by the NZ Institute of Economic Research (they of the mostly useless recent report on the economics of the ETS). Here’s what Fran noticed:

The detailed survey shows extraordinary ignorance by New Zealanders. It indicates only one-third of the country believes in climate change in the first place. Only 13 per cent strongly support the ETS, with less than half the country aware of the scheme’s existence until prompted by surveyors.

The usual suspects have been trotting out a similar take on the survey. But it seemed fishy to me (and to No Right Turn). The results don’t seem to square with other online polls on the subject. So I downloaded the survey results and had a look [PDF].

Continue reading “Paint it, black”