BLOGGING THE CARIBBEAN RENEWABLE ENERGY FORUM

I attended the Caribbean Renewable Energy Forum (CREF) held in Jamaica, in October. It was well-attended and featured a packed programme of presentations and panel discussions on renewable energy issues and options in the region.

At the conference I heard the phrase “agnostic about renewables” a lot (and used it a couple of times myself I’m sure), which I guess is a safe position to take. There’s no single technology fix that’s going to secure the Caribbean’s energy future. In fact, the question of whether technology is the answer is something that’s been occupying me for the better part of the year, but that’s for another post.

That said, I think that, assisted by events such as the CREF, a fairly clear picture is emerging of the continuum of Caribbean renewable energy technology prospects, from the game-changers on the one hand, to the technologies that need to be in the game on the other. So here’s my list of the things we should be watching now in the Caribbean.

Geothermal is (as I had previously written) the game-changer in the Eastern Caribbean. Successfully implemented, interconnected geothermal power projects will provide abundant, renewable, baseload power to OECS countries at a predictable price, and will usher in the reality of hybrid and electric-vehicle transport in the region. Note that Dominica and St Vincent & the Grenadines, which are ranked 2nd and 3rd in the OECS for geothermal potential, already use more fuel for transport than in their power sectors. Memo to regional oil companies: you should be taking a serious look at geothermal energy as the 21st century driver of your energy business.

Wind energy is now the fastest growing renewable energy resource in the region, with some large projects on stream: Jamaica is upgrading its Wigton Wind Farm from 20 MW of installed capacity to 38 MW by July 2010 and Aruba has commenced construction of its 30 MW Vader Piet wind farm, also scheduled for completion in 2010. I think that the deployment of multiple small (@300 kW), collapsible wind turbines in distributed wind farms is an approach perfectly suited to the Caribbean, particularly for the smaller islands, but so far only the French island Guadeloupe has made any significant use of this windpower model. In any case, the bottom line is that the future of wind energy in the Caribbean looks very good.

For countries with relatively large populations and/or high rates of personal consumption (and therefore large waste output) Waste-to-Energy (WTE) makes complete sense, which would explain why two large WTE projects are now in progress in Jamaica (65MW) and the US Virgin Islands (49MW).

Continued development, improvement and upgrading of small hydro in the region is essential and, fortunately, ongoing. There are hydro projects at some stage of development now in progress in Belize, Dominica, Jamaica and St Vincent, all financed under the Caribbean Renewable Energy Development Programme (CREDP).

Ocean energy hasn’t yet made much of a splash. The ocean current regimes in parts of the region are considered by some to be quite favourable, but the shortage of fully-commercial ocean energy projects anywhere in the world isn’t helpful in bringing the technology to a region that can’t afford to be an early adopter.

Biofuels and biomass energy are always of interest in this region, but have made few inroads. The much-publicised debate on the role of biofuels in the 2008 ‘food crisis’ has left the sector with a definite image problem. Brazil, the world’s biofuels giant, has over the past 30 years created a huge, and hugely successful, biofuels sector based on sugarcane ethanol, that has replaced 50% of the country’s gasoline consumption. The Caribbean can’t match this using agriculturally-based biofuels production, but Jamaica has already made a small start, with its e10 program, which uses refined ethanol (produced in Jamaica from imported raw ethanol from Brazil) in a 10% blend with gasoline.

Solar thermal energy is truly the low-hanging fruit in the Caribbean RE space – and it’s not being picked. Barbados amply demonstrated, decades ago, how easy and inexpensive it is to make solar thermal energy a national success story with huge benefits. And yet, their excellent example has been all but ignored by the other countries.

As always, the belle of the ball was solar electricity and not surprisingly, the solar discussion panels generated the most heat!

I was intrigued by presentations on solar cooling projects that have been implemented on large commercial and institutional facilities in Europe and elsewhere. The technology appears to be developing rapidly and the economics are reported by its proponents to be far better than the economics of, say, installing PV panels to power space cooling needs. But, I didn’t get a sense that there was anything happening on this front in the Caribbean, despite the obvious facts that we have the sunshine and we need the cooling. As one local delegate passionately summed it up, “nutting naa gwaan!”

Jigar Shah, CEO of Richard Branson’s Carbon War Room, founder of SunEdison and pioneer of the solar-as-a-service business model for solar power, presented thought-provoking ideas on how to deliver solar electricity in large quantities to the Caribbean. Shah’s presentation was reflective of his thinking on how to enable the new paradigm for electric utilities – what he refers to as Utility 2.0 – and how to translate that to the Caribbean. (His ideas were well-received and I get the impression that several Caribbean utilities have been in follow-up discussions with him on this).

I believe that energy efficiency, one of the things only mentioned in passing at the CREF, is a critical component of the Utility 2.0 model, for the simple reason that whatever our sources of energy, we need to find ways to use it more efficiently: after all, even a resource such as solar PV can have a significant environmental footprint due to the materials and processes that go into its deployment.

All things considered, attending the CREF was a well-spent two days for me. Now some serious follow-up is needed by the people who can make things happen. I’d better get back to work…

Visit the CREF website or join the CREF group on LinkedIn here for post-conference information.

JUST ENOUGH

I installed a wireless whole-house electricity monitor this weekend. One of the things it confirmed is that the electric kettle is one of the energy hogs in my home. Have a look at the video.

My electricity demand went up almost x 5 when I switched the kettle on. Of course, at the time, there was not much else on that was using electricity, but you get the point... the kettle pulls 2,000 Watts of power when it's in use.

That's a lot of power. So, when you're boiling water for that cup of tea/coffee/milo/ovaltine/whatever switches you on in the morning, just boil enough water for one cup. The planet will thank you!

(ps: An idea of pure genius occurred to me while tweeting about this blog post. We can save the planet by simply staying in bed!)

BEHAVE

When we were children and our mothers, grandmothers or assorted aunts wanted us to stop acting like children, their command was “Behave!” When you heard that and got the look that went along with it, you generally shaped up. Or else. These days, the problem with behaviour is that no one pays attention to it any more (no, this isn’t a discussion about parenting; it’s about energy efficiency and conservation in the Caribbean).

The energy problem in a nutshell is that we need to find ways to supply more green energy – and to reduce our demand for it at the same time. So energy conservation and energy efficiency are vital aspects of the solution.

The thing is: our policymakers (and here I’m also referring to the consultants who write the policies and plans that the politicians approve) have quite often misunderstood the demand side of the problem – and have traditionally framed it as being comprised of two separate things, one having to do with people and the other with technology.

For example, according to a national energy policy document published this year by a large CARICOM country, energy conservation is defined as “practices and actions that reduce the amount of energy that is used”, whereas energy efficiency is “changing technology so that less energy is used to accomplish the same task.”

In other words:

Conservation = Behaviour
and
Energy Efficiency = Technology

So, according to the above formulation, if I walk to the bar instead of driving there, I would be reducing my energy use by conservation. But if, on the other hand, I bought a new, more fuel-efficient vehicle that gets far better gas mileage than my current vehicle, I could still drive to the bar – but I would also use less energy, so I achieve the same result, thanks to technology!

New technology is so much sexier than better behaviour.

Except that: a British economist named William Stanley Jevons explained, some 144 years ago, why this would not actually be the case. “It is wholly a confusion of ideas”, Jevons wrote then, “to suppose that the economical use of fuel is equivalent to a diminished consumption. The very contrary is the truth.” In his book The Coal Question, published in 1865, Jevons pointed out how James Watt’s steam engine, by improving on the previous design, provided much better fuel efficiency – thereby causing England’s consumption of coal to soar. His observation came to be known as the Jevons Paradox.

The Jevons Paradox is explained by what is called the rebound effect; an economic theory which says that if the cost of a resource is reduced due to increased efficiency, people will consume more of the resource (or the services dependent on the resource) than previously, thereby offsetting (partially or entirely) the effect of the efficiency improvement.

For example: a colleague recently told me the story of his neighbour, who never used his outdoor lights at night – until he got energy efficient compact fluorescent lamps. Since then, he has been leaving the lights on outside, because he knows he now has “energy-saving bulbs” inside. Well, guess what the overall effect on his electricity bill is likely to be? (This is an example of a direct rebound effect).

Or, take television. I want a new TV. I have a 32” Sony cathode-ray tube model, and I’m interested in a sleek flat-panel set. Flat-panel plasma or LCD TVs are more energy efficient than their bulky CRT counterparts; they use less electricity per inch of screen. But what are the chances that I will replace my 32” CRT with a 32” flat-panel? More than likely I (and many other buyers of new TVs) will upgrade screen size as well, which then causes the better energy efficiency per screen inch of the new TV to be offset by the larger number of screen inches. And, you know what? Flat panel TVs look really sexy when they’re on, so maybe I’ll inadvertently leave my new TV on more often than I did the old one. This all adds up to using more electricity, not less.

The important point here is that these are not isolated examples. A growing body of research indicates that the rebound effect is a universal behavioural response, one that gives rise to energy consumption outcomes that are quite different to the predicted ones.

So how is this relevant to Caribbean energy policy?

To date, I have seen no energy policy published in the Caribbean that makes any reference to the rebound effect or to behavioural factors in relation to energy efficiency outcomes. This omission causes us to get our sums wrong.

We can calculate, based on the technical efficiency differences, the energy-saving effect of new technology (importing fuel-efficient vehicles; replacing incandescent bulbs with CFLs and so on), but without taking behavioural factors into account, our estimate of the amount of energy to be saved will be incorrect. We need new equations, which are:

Conservation = Behaviour
and
Energy Efficiency = Technology + Behaviour

Who’s sexy now?

I’m writing some more on this soon, but here’s some reading on the rebound effect. http://en.wikipedia.org/wiki/Rebound_effect_(conservation)

BLOWN AWAY

That’s what I was, when I realised the status of renewable energy in Guadeloupe during a recent visit. I was there to participate in a trade mission on renewable energy in the Caribbean, organised by Carib Export in partnership with the Guadeloupe Regional Council.

275kW Vergnet wind turbine at Grand Maison, Guadeloupe.
Photo: H Samuel

Prior to my visit, I knew a few things about what was happening on the French-Caribbean island of 660 square miles (I should say 1710 sq km) and 460,000 people. I had previously written about their geothermal power plant and I was generally aware that there was utility-scale wind energy being used; my impression was that there was a large-ish wind farm on the island.

I soon found out how wrong I was: Guadeloupe boasts a grand total of thirteen wind farms, with over 200 wind turbines having a total installed capacity of 25 MegaWatts. That’s only a slice of the renewable energy pie: In addition to the 25MW of wind and the 15MW of geothermal power, Guadeloupe benefits from almost 60 MW of biomass (mostly bagasse from sugar cane); 8.7 MW of hydro power and 2 MW of grid-connected photovoltaics. And, there are 30,000 solar water heaters installed on the island.

In absolute terms, that sounds pretty impressive, but in overall percentage terms, not so much. Renewable energy accounted for 14% of all electricity used on Guadeloupe in 2008, which is less than the figure for St Vincent and the Grenadines, which in 2008 had 17% of its electricity supply from hydro, or Dominica, which had 24% hydro electricity that year.

More to the point is that the local government in 2007 drew up ambitious plans to increase the share of wind and other renewables to a very impressive 50% by 2020. Called the PRERURE (long-term regional energy plan of prospecting and exploitation of renewable energies and the rational use of energy), the plan was formally adopted in May 2008 and is now being implemented. According to Mr Louis Galantine, president of the Commission Energie de Guadeloupe, the plan’s objectives are “ambitious, but realistic and doable”.

One project now approaching completion under the plan is a new school that will be completely powered by renewables. It’s an impressive green energy project (though I think some aspects of it may be overdesigned). The school is intended to house 1200 secondary-level students and their estimated one million kWh of annual electricity consumption is to be entirely supplied by a combination of grid-connected photovoltaics, biomass and wind energy.

Renewables-powered school under construction in Guadeloupe.
Photo: H Samuel

The wind energy is already being generated a few miles away at the Grand Maison wind farm developed by French company Aerowatt, comprised of 5 turbines of 275 kW each, for a total installed capacity of 1.375 MW.

The Grand Maison turbines, made by French company Vergnet, are specifically designed for the Caribbean challenge: they incorporate special lattice towers that are able to be quickly winched down to the ground and secured to a docking frame when a hurricane threatens – as was successfully done in August 2007 as hurricane Dean approached the islands, only a few months after the wind farm was commissioned. (Dean went on to wreak havoc on Dominica’s hydro output by causing a landslide that destroyed one of the island’s three hydro power-stations).

This design approach addresses what I think is perhaps the major problem with wind energy in the region, but the approach also has other benefits. Because the use of a collapsible lattice tower limits the turbine size, this suggests the use of numerous, relatively small turbines spread across the island, as opposed to fewer, larger turbines in one location, to produce a given amount of output.

I believe that this outcome helps to address the intermittency problem of wind power – that sometimes the wind is strong enough to produce energy and sometimes not. If wind power is not available at the same time that there is high demand for power, then the power has to be provided from another source – which tends to be a fossil fuel source.

Because of this, wind power is often considered a fuel replacement option, which cannot completely replace investment in baseload power capacity: the utility still has to have some capacity to cover the idle wind capacity. This balancing act is easier if the wind capacity is broken up into smaller, widely spread units, some of which may be available when others are not.

I think the French Caribbean model is showing us how we should think about wind energy in the Caribbean. Perhaps another trade mission for a closer look is in order?

OTHER BUSINESS

I read recently that this week’s summit of the heads of government of the Caribbean Community and Common Market (CARICOM) will feature a packed agenda. Climate change is high on the list, according to CARICOM's secretary-general. Another item for discussion will be freedom of movement for CARICOM nationals.

This latter item, of course, has been discussed many times at previous CARICOM meetings. And, I’ve often wondered: why do we CARICOM citizens need so many different immigration forms for travel within our region? After all, we’ve been on this path to a so-called single market and economy for – how long now? I’ve lost track. Why not one CARICOM immigration form? In fact, why do we need a form at all, now that we’ve got machine-readable passports and fancy ID cards?

Well, I found out the answer a few weeks ago when I went to Guadeloupe on a business visit.

We don’t.

It was my first visit to the French Caribbean island and when I arrived, the immigration officer took my passport and the documentation explaining why I was there (since I spoke no French and he no English). He looked them over, scanned the passport, handed everything back and wished me a good day (in French). That was it. No form was required to be filled out. As I approached the customs counter with my luggage, the officer smiled and waved me though. Again, no form was required.

It was an interesting experience - I was let into France faster and easier than I am let into my own country!

Now, presumably, the French are just as concerned about immigration, customs and cross-border security and social issues as we are, so the question is: how come the French Caribbean can make a paperless immigration and customs entry procedure work, even for visitors from outside their economic region, while within CARICOM, we are still engaged in an archaic paper-intensive process?

Attempting to emulate the French Caribbean in this area would hasten our progress towards making freedom of movement for CARICOM nationals a reality. It would also have the salutary benefit of reducing the region’s carbon footprint, thereby assisting in our efforts to mitigate climate change. The carbon emissions generated by the energy used for the production of the paper, its shipment, printing and distribution to all of CARICOM’s immigration departments would be eliminated.

That’s a lot of paper, printing and shipping. The CARICOM Secretariat can do the numbers on how much this would reduce the region’s carbon footprint. In fact, I know a consultant who’s available for the assignment.

A LONG ROAD AHEAD

I was having a drink and a chat with a friend recently. We got to speaking about business and the subject eventually turned to energy in the Caribbean. Our discussion was interesting and wide-ranging (and, appropriately, fueled by ethanol in various concentrations).

I was taken aback when I realised that his opinion of geothermal energy in the Caribbean was that it was some sort of little pilot-project-type thing; essentially experimental in nature, and not to be taken seriously by serious people. At one point, he even used the phrase "fly-by-night".

He himself is a successful businessman and entrepreneur and, more to the point, was quite recently on the board of directors of one of our Caribbean electric utilities. I tried to convince him that he was wrong, but perhaps our consumption of biofuels had by then affected the cogency of my arguments, and I failed.

Thinking the episode over the following day, I realised I should not really have been surprised. After all, before I started focusing specifically on Caribbean renewable energy and sustainability issues a few years ago, I didn't know what the real situation was either.

During our discussion I had pointed out to him that Nevis is now on track to become the Caribbean's first green island, powered by geothermal energy. He was skeptical. One of his arguments was that he had never heard of Nevis as having any sort of geothermal potential.

Well, until just over a year ago, neither did I.

But never mind the inherent egocentricity of this argument (which I also failed to point out to him at the time, no doubt due to my biofuel-enhanced state), the discussion highlights a particular problem that is affecting the Caribbean, which is: that the state of information on Caribbean energy prospects and options - matters of critical national and regional importance - is abysmal.

Any discussion of issues that have the potential to impact the collective futures of nations requires an informed public. How do we make sound decisions about vital matters if we are not informed? Do we leave these decisions to our business and political leaders? Are they themselves sufficiently informed? Some of the evidence suggests not.

It’s clear to me that there's a long road ahead on this. Far more needs to be done by the various actors and leaders in this space. Paradoxically in this so-called information age, we are falling short in informing our public on energy issues.

HOT SPRINGS ETERNAL

I had the pleasure of visiting Dominica recently. En route from the airport to the capital Roseau, the signs of geothermal energy potential were everywhere – from the smell of sulphur on the rainforest air, to the sight of people bathing in hot springs along the way.

Hot spring at Wotten Waven area, Dominica
Photo: H Samuel

I’m told that the sparsely-populated, mountainous island, popularly known as “The Nature Isle” has at least 9 active volcanic areas and too many hot springs to keep track of. So it should seem to be a natural for the exploitation of geothermal energy.

Geothermal is the most important prospect for renewable energy in the Caribbean, for two reasons: First, it represents baseload power – power that is constantly available at large scale, as opposed to solar and wind, which are intermittent resources and second, it is apparently widespread throughout the Caribbean.

The various studies that have been done of the geothermal potential of the Eastern Caribbean over the past two decades all basically say the same thing – that there appears to be significant geothermal potential in the region – and, crucially: that it appears to be far greater than present demand for electricity.

So if large geothermal resources are proven to be available on a few strategically-located islands (say Nevis in the north, Dominica in the middle and Grenada or St Vincent in the south), power can be made available via undersea transmission lines to the others, thereby creating an interconnected, renewable and sustainable electricity network spanning the Eastern Caribbean.

So (the inevitable question): why isn’t there more geothermal being used in the Caribbean? The region's only geothermal plant is in Guadeloupe, with an installed capacity of 15.5 MW, which is reported to provide close to 10% of Guadeloupe’s electricity demand.

As is the case with many RE technologies, a major issue is the up-front cost. Geothermal energy in particular is affected by this because, notwithstanding sulphurous valleys and hot springs: in order for a geothermal power plant to be built, specific explorations (geological, geochemical and geophysical studies, drilling a few holes through rock to depths of several thousand feet, etc.) must be carried out – and they are very expensive. For example; the recently-concluded exploration that established Nevis’ geothermal potential is reported by the developer to have cost US$8 million. The power plant construction is estimated at US$45 million, to install 11.6 MegaWatts of power, which can supply Nevis’ existing electricity demand (currently about 9 MW).

These costs sound high, but they actually represent an economic and environmental bargain (in a subsequent post, we’ll dig deeper into some details of the economics of geothermal vs diesel power on these islands).

The Nevis power plant construction is reported to be going ahead, so it looks as though Nevis will indeed become the Caribbean’s first green island. Meanwhile, Dominica is not far behind; there are two separate geothermal explorations proceeding on the island. One is funded by the European Union; the other is being carried out by the Nevis project developer. One or both of them could bear fruit; this would create the central point for geothermal electricity generation in the Eastern Caribbean. Then all we would need is another in the south and the foundation for the creation of an entire string of green islands would be in place.

Dominica’s geothermal explorations could be concluded by mid 2010, but significant hurdles exist. If her geothermal resources are proven, Dominica’s mountainous terrain will challenge the builders and increase the cost of building a power plant and the transmission lines required to get the power to end users. Then there are the technical, economic, business and political challenges of designing and building an interconnected Eastern Caribbean power grid.

But these challenges will pale in comparison to the legacy of failure we will leave if we continue a business-as-usual-with-a-few-incremental-improvements approach.

That time has passed.

More information on geothermal energy can be found here

.

GREEN FLASH AT SUNRISE

I saw my first green flash for 2009 a few days ago. Most Caribbean people know what the green flash is. It’s the fleeting change of colour of the last sliver of a setting sun at a clear horizon – from red to green – and it’s gone in an instant.

The (totally exaggerated) green flash depicted in the movie “Pirates of the Caribbean: At World’s End”. The first of the “Pirates” series was filmed in St Vincent & the Grenadines and other Caribbean islands.
Photo: Wikipedia

Later that night, I wondered: is there a green flash at sunrise as well? I’m not a morning person, so I would hardly know. But I figured there should be, since the physics of it (as far as I can tell) would be the same.

In any case, here’s a prediction about solar energy in the Caribbean: sunrise is coming and we’re about to see our green flash. That’s because as oil prices climb back to uncomfortable levels; as energy policy in the Caribbean adjusts to the new global reality; as technology continues to improve and prices continue to fall, electricity generated by photovoltaics will become very popular in these parts.

Photovoltaics (PV) is the name for the process by which light is converted directly to electricity by a solar cell. We’ve got lots of PV-powered devices around already. Look at a pocket calculator. Instead of a battery, it’s got a solar cell on the front that provides the electricity it needs. The same basic technology, on a larger scale and with a few additional devices, is already being used to power homes and businesses worldwide.

A typical home PV system would consist of roof-mounted solar panels, connected to an inverter (a device that converts the direct current produced by the solar panels into an alternating current, which is the same as the electricity that you buy from your electricity company). The inverter is connected via a switch to the main circuit breaker panel that distributes electricity to the house.

So if you had a PV system installed at home: depending on the size of your system, its type (whether it had battery storage or not) and the amount of direct sunlight available at the location, your entire electricity needs could well be supplied from the sun!

This sounds great; so the question is, again (this question will be coming up a lot on this blog): why isn’t more of this renewable energy technology being used in the Caribbean?

There are two basic problems: the first is that the technology is expensive. A PV system of 2.4 peak kilowatts (kWp) capacity, enough to power my own two-occupant home in St Vincent (my electricity demand is pretty low – did I mention I’m an energy efficiency consultant?) could cost up to US$15,000 installed. On the other hand, electricity in these parts is also expensive and we’ve got great sunshine, so I would expect my system to pay for itself in 7 to 10 years or so. After that, I would be making my own electricity – for free.

Essentially, PV works out well on an individual scale, once the matter of the up-front cost can be sorted out. But in the Caribbean, there’s another issue: the utility connection. The best way to use PV is as a grid-connected system. This means that your PV system is connected to the electricity company’s system, so that whenever your system is not producing enough electricity for your needs, the difference comes from the electricity company. At those times when your system is producing more electricity than you need (eg: when it’s a bright sunny day and no one’s at home), the extra energy will actually go into the electricity grid and be used by someone else. You pay for any electricity you use from the grid and the electric company pays you for any electricity your system supplies to the grid. This grid connection and payment arrangement, called “net-metering”, is a well-established practice worldwide.

The problem is that electric utilities generally will not encourage this sort of thing on their own initiative, so what is needed are government policies that encourage customers to invest in PV and laws that require the utilities to work with customers that want to go green. This is exactly what happens in the countries with significant PV use, and what is not happening in the Caribbean – with a couple of exceptions.

Two of the bright spots are found in Grenada and the US Virgin Islands. The utilities in these countries have taken a progressive approach to the matter and as a result the numbers of grid-connected systems are growing nicely (I’ll try to get some actual numbers on this for a future post).

So, the bottom line is there’s no mystery here. PV is not some esoteric, experimental technology that’s not ready for real-world use. It is a well-established (and rapidly-growing) renewable energy technology, in use all over the world, even in not-so-sunny places as Germany and Japan, two of the world’s biggest PV users. We need to use more of it. To do this we need creative ways of dealing with the up-front costs of PV for prospective customers, and we need government policies and net-metering laws, directed at getting the utilities on board.

Meanwhile, PV prices are falling, and sun is shining!

You can find lots of detailed information on PV here http://en.wikipedia.org/wiki/Photovoltaics