The phrase "a time when electric" is not complete and lacks context, but it is grammatically correct.
You can use it when referring to a specific period or moment related to electricity or electric devices, though it would typically need additional information to clarify its meaning.
Example: "I remember a time when electric cars were just starting to gain popularity."
Alternatives: "an era of electric" or "a period when electric".
This was a curious conclusion to reach at a time when electric companies were competing vigorously in many cities.
It shows a time when electric lights were strung across city streets, and cafés, cinemas, theaters and the Moulin Rouge were aglow.
In fact, there was a time when electric vehicles strongly outnumbered gasoline cars in NYC.
The exhibition featured the first public display of Thomas Edison's light bulb, as well as what was billed as the largest artificial lighting display in history with 4,600 lamps, in a time when electric lighting was considered a novelty.
They speak of a time when a bare electric light bulb was a potent sign of technological prowess.
"At a time when a regional electric blackout can cripple the entire steam system on which New York's hospitals, businesses and residences rely for heating and air-conditioning, it cavalierly dismisses key reliability benefits from TGE.
Still, there will be times when electric cars will be out on the road, running on the electrical equivalent of fumes, and looking for a charge.
You can just walk into Starbucks or a restaurant and charge them up while you rest". She recalls a funny memory, a time when she charged her electric bike in a biker bar.
Opponents of the standard said it was hurting coal jobs and raising electricity rates, while supporters said it would help to diversify the state's electric sector at a time when the national coal market was in decline.
This was a time when great advances were being made in electric arc lighting, and during the expedition, which Edison accompanied, the men discussed the practicality of "subdividing" the intense arc lights so that electricity could be used for lighting in the same fashion as with small, individual gas "burners".
However, he played the Davis role authoritatively in the 1977 VSOP band (with former Davis sidemen Hancock, Shorter, Ron Carter and Tony Williams), recapturing the acoustic sound and one-touch ensemble conversations of the great mid-1960s Davis quintet at a time when the original creator had moved to electric jazz-funk.
