Bitcoin mining, looking for a solution to safeguard the environment

As reported by Stephen Armstrong on British edition of Wired, alternative and renewable sources energy are an important resource for the production of Bitcoin. In fact, it requires significant amounts of electricity.
The hydroelectric power of Champlain Lake, near the city of Plattsburgh on the border between the United States and Canada, is an example. Around 15 percent of the supply of the lake is used for mining. Thanks to the nearby Niagara Falls, the cost of electricity is lower and it has attracted many investors over the past two years.
At the moment there are two large cryptominers and six medium-sized ones in the area.
However, many experts think about the future of mining and are looking for solutions to avoid over-exploitation of natural resources.