That means that barring a breakthrough technology in electricity storage, wind and solar are likely to contribute only small - that is, single-digit - percentages of our overall energy needs.

那也就意味着除非有电力储存上的技术突破，风能和太阳能很可能在我们总的能源需求中只能做出占百分比个位数的少量贡献。

youdao

Wave power, carbon-capture technologies and electricity storage could all prove revolutionary.

ECONOMIST: Energy markets

All attempts to develop Afghanistan as an agricultural exporter suffer from fundamental difficulties: lack of fertiliser and pesticides, a poor road network, shortages of electricity and cold-storage depots, and only rudimentary packaging.

ECONOMIST: Afghanistan's great purple hope

The alliance's manifesto calls for measures to reduce demand on the main electricity transmission grid, including smart meters, encouragement for community and small-scale local energy generation, and further research on methods of storage of electricity.

BBC: Fears over pylons in beauty spots