Demand Energy ends year with Costa Rica deal

Demand Energy's battery systems will go towards helping Costa Rica maintain its pristine environment. Pic: Pixabay.

Demand Energy’s battery systems will go towards helping Costa Rica maintain its pristine environment. Pic: Pixabay.

By Jason Deign

Energy storage systems developer Demand Energy and Latin America microgrid pioneer Rio Grande Renewables this week announced a record-breaking project in Costa Rica.

The two companies have commissioned a battery storage-plus-solar-PV microgrid at Establishment Labs, a Costa Rican medical manufacturing plant, said Demand Energy in a press release.

The microgrid is said to be the largest in Central America and includes a 500kW, 1MWh lithium-ion battery connected to 276kW of solar PV.

The system is designed to provide multiple on-site and grid-assisting services, including peak demand reduction, solar variability smoothing and backup power for critical loads in the event of an outage.

It is controlled by Demand Energy’s Distributed Energy Network Operating System (DEN.OS™), which optimises how energy storage, distributed generation and other distributed energy resources interact and perform. 
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Battery key to island’s hybrid system

SMA's Sint Eustatius hybrid solar, battery and diesel plant.

SMA has commissioned a hybrid solar, battery and diesel plant to reduce fossil fuel consumption on the Caribbean island of Sint Eustatius.


By Jason Deign

Inverter maker SMA Solar Technology yesterday confirmed commissioning of a hybrid battery, PV and diesel system covering the electricity needs of a small Caribbean island.

The system will allow the 21km2, 3,500-population island of Sint Eustatius, in the Caribbean Netherlands, to cut its fossil-fuel consumption by 30%, equivalent to 800,000 litres of diesel and 2,200 tons of CO2 a year.

The hybrid system includes a 1.9MW solar plant, which can cover more than 23% of the island’s 13.5GWh annual electricity demand, plus 1MW of battery storage.

Diesel genset integration is through SMA’s Fuel Save Controller 2.0 software. SMA also supplied a Sunny Central Storage 1000 battery inverter and a Medium Voltage Power Station 1000.

This “enables a measured solar fraction of up to 88% during sunshine hours and supports the grid with stability functions such as frequency regulation, ramp-rate control for PV and optimisation of diesel genset operation,” SMA said.
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