A conventional plant sells electricity and pays to dispose of the rest. An integrated facility is designed to turn one waste stream into a range of saleable commodities, so no single market carries the business. The volumes below are for the Sint Maarten facility at steady state; they scale with the size of the waste stream.
Hydrogen from the syngas runs gas engines for continuous baseload power, unlike weather-dependent solar or wind. At Sint Maarten the design exports around 9.8 MW net under a twenty-year fixed-price agreement, covering 15 to 20% of the island’s electricity.
Contracted rate per kWh — to the utility and associated businesses on site.
The cost of H2 is fixed to a relative cost per KWh and if absorption cooling as added the additional revenue per ton/hr of cooling from the waste heat. There are no demand charges and the plant back up is fed by stored H2.
The plant can also supply hydrogen directly as a utility, so the customer generates their own power or heat. This is the chosen model on the island projects.
Rather than vented, CO2 is captured and liquefied to food and beverage grade. The Caribbean currently imports this by ship at high cost, which gives a clear regional and export market.
At Sint Maarten: 2,500 tonnes a year for the local market, and around 18,500 tonnes for regional Caribbean export, alongside smaller volumes to the French side and the premium Leeward islands
The process also recovers zinc, sulfur and salt in saleable quantities, modest individually but part of the same point: the design routes each stream to a buyer rather than to landfill.
Captured CO2, recovered nitrogen, reclaimed water, spare heat and surplus cooling feed photo-bioreactors growing food grade nutritional algae, freeze-dried to preserve its superfood benefit as a nutritional or pet food supplement.
HydroGenyse can quantify and capture all grants and subsidies availible for everything from workforce develpment to utility infrastructure.
The plant also charges a tipping fee, as any disposal facility does. Design intent: at or below what the municipality pays today, so the city saves on disposal while the facility earns from commodities.
Tipping fee —
The tipping fee pays for the plant which the municipality will own so the fee is paid by the user. The main saving is in the trucking since the plant is located in the city limits. Recycling losses are eliminated as we near 100% recycling of only the valuable elements.
Removing the metals and bottles up front alone will reduce the city’s hauling and dumping costs by 30% and create revenue for the community.
