What is the effect of having too much generation in an interconnection?

Having too much generation in an interconnection can lead to excessive frequency. This occurs when the amount of electricity generated exceeds the demand for that electricity. In a power system, the frequency of the electrical current must be maintained within a specific range to ensure the stability and reliability of the grid. When generation outpaces consumption, it causes the frequency to rise. If this imbalance is not corrected, it could lead to various operational issues, including the risk of equipment damage and possible system failure.

Other options describe scenarios that do not accurately reflect what happens during an oversupply of generation. Overheating of generators typically results from operational inefficiencies or load conditions, not directly from an overabundance of generation. While system efficiency can be high under certain circumstances, having too much generation does not necessarily lead to an improvement in efficiency; in fact, it can create inefficiencies due to fluctuations in operational output. Finally, excessive generation would not reduce transmission losses; these losses are often dependent on the distance electricity travels and the infrastructure used, rather than the total amount of power generated.