Now that task seems far more urgent. To move beyond fossil fuels, Caribbean countries must transform their energy systems by building in new, greener sources of power. That will also make electric grids more resilient to weather extremes because they will be decentralized – pulling from a diverse array of power sources.
Climate change in the Caribbean
As an environmental scientist working in Jamaica, I recognize many reasons why the Caribbean region must upgrade its outmoded energy systems. Mitigating global climate change, of course, is a big one.
Unfortunately, I believe that climate change will also complicate the region’s transition toward renewable energy. The Caribbean is comprised of island nations, which are the world’s most vulnerable places when it comes to rising seas, changing weather patterns and other effects of global warming.
The Caribbean is already seeing more weather extremes. Research suggests, for example, that northern Caribbean countries like Cuba, Jamaica and the Bahamas have gotten rainier over the past three decades, though historical data is limited.
Why traditional energy sources need to adapt
Installing more wind, solar and hydropower – the world’s most reliable and common renewable energy options – would seem to be a more obvious step in the right direction. Between 2015 and 2016, the global capacity of these green power sources rose 9 percent – nearly half of which comes from the widespread adoption of solar panels.
Tesla installed Powerwall solar-powered batteries across Puerto Rico. This technology has kept the lights on during blackouts at over 660 locations, though experts caution that such solar “microgrids” cannot serve the energy needs of an entire country.
The problem with climate change
But, in a Caribbean of increasing weather extremes, these green energy systems are themselves vulnerable.
Changing precipitation and temperature patterns in the Caribbean also affect hydro and solar power. More rain in the region’s north means fewer sunny days than anticipated. Higher temperatures in other countries suggests increased likelihood of drought, leading rivers to run dry.
Computer models are inherently imperfect planners. As researchers from the Massachusetts Institute of Technology recently affirmed, plugging in short-term weather data to make long-term atmospheric projections adds “irreducible elements of chaos.”
Climate change, which affects various parts of the world differently, makes it even harder to accurately predict future weather scenarios. Comprehensive modeling systems that use LIDAR and other remote-sensing technologies do better, but they are too expensive for widespread adoption in the Caribbean.
The future is now
The Caribbean is making progress in planning for a future of more renewable energy, though.
Jamaica aims to install new automated weather stations that will collect real-time weather data nationwide. This initiative will help meteorologists across the entire Caribbean better predict future weather, which in turn supports the development of renewable energy systems.
So will a new climate model developed by my colleagues at the University of the West Indies. The system, called SMASH, can aid planners in siting wind farms and predicting the path and severity of the hurricanes that could mangle turbines.
A new Caribbean drought atlas from Cornell University has compiled climate data going back to 1950. The tool won’t just help sustain food production during dry times; I believe it will also provide engineers precipitation data that’s critical to planning hydropower enterprises.
Cutting-edge hydropower plants that run on urban wastewater may one day also address the current limitations of hydropower in the Caribbean. Many small islands lack the big rushing rivers that allow water to be a meaningful power generator.
All of these technologies may eventually help Caribbean countries navigate their way through climate change toward a real renewable energy boom. But the climate change conundrum won’t be solved before the 2018 hurricane season hits.