Consider the following :
- 1.Battery storage
- 2.Biomass generators
- 3.Fuel cells
- 4.Rooftop solar photovoltaic units
How many of the above are considered "Distributed Energy Resources" ?
Show answer
Answer: D. Distributed Energy Resources (DERs) are small power generation or storage units located close to where electricity is used, rather than large central power plants. Battery storage, small biomass generators, fuel cells and rooftop solar panels all fit this definition. So all four.
Watch for: Students think DERs mean only generation and drop battery storage, but storage is a core DER.
Why the other options are wrong
- A. Wrong because all four are small, local generation or storage units.
- B. Wrong because all four count as DERs.
- C. Wrong because battery storage, biomass, fuel cells and rooftop solar are all DERs.
Source to check: US Department of Energy and US EPA pages on Distributed Energy Resources; NITI Aayog/CEA discussion on DERs
Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.