Consider the following:
Battery storage
Biomass generators
Fuel cells
Rooftop solar photovoltaic units
How many of the above are considered Distributed Energy Resources?
(a). Only one
(b). Only two
(c). Only three
(d). All four
Explanation:
All four of the options listed are considered Distributed Energy Resources (DERs): battery storage, biomass generators, fuel cells, and rooftop solar photovoltaic units. DERs are small, local generation units that are connected to the distribution level of the grid. They are often renewable and can provide power close to where it's used.
Battery storage allows for storing energy for later use.
Biomass generators produce electricity from organic matter.
Fuel cells convert chemical energy into electrical energy.
Rooftop solar photovoltaic units generate electricity directly from sunlight.
All of these can be installed at individual locations or distributed across a system, making them DERs.
Some more information about DERs:
Connection: DERs connect to the lower-voltage distribution grid, similar to businesses and residences, instead of the high-voltage transmission grid.
Benefits: DERs can help meet energy and cost saving goals, and provide environmental benefits. They can also help strengthen grid resilience and mitigate grid disturbances.
Examples: Other examples of DERs include wind generating units, combined heat and power units, and batteries in electric vehicles that can export power back to the grid
So, The correct answer is (d): All four