in News Departments > New & Noteworthy
print the content item

The MaRS Cleantech Fund has completed a venture deal with Toronto-based energy storage firm Hydrostor, whose technology converts surplus electrical energy to underwater compressed air and stores it for use at peak times.

According to the companies, the technology uses surplus renewable electricity to drive a compressor that pressurizes atmospheric air to the pressure found at the sea floor offshore. The heat produced during compression is extracted from the air and stored in underwater accumulators, where the weight of the water keeps it at a constant pressure until required.

When demand for electricity is again high, the companies continue, the system is reversed: The weight of the water forces the air back to the surface, where it collects the stored heat and drives an expander, reproducing approximately 70% of the input electricity and releasing the air back into the environment.

Hydrostor has two commercial projects under development. The first is in collaboration with utility host Toronto Hydro-Electric System Ltd. The second, with the national utility of a Caribbean island, will store wind power generated at night when it cannot otherwise be used.

Hybrid Energy Innovations

Hybrid Energy Innovations 2015
Latest Top Stories

To Help Combat Costly Electricity Theft, Emerging Markets Turn To Smart Grid Infrastructure

According to a new report, the world loses a whopping $89.3 billion to electricity theft annually, and emerging country markets are feeling a majority of the pain.


Report: Utilities Face Big Revenue Cuts From Distributed Energy Resources

According to a new report from Accenture, the growth of solar and other resources, such as energy storage, could mean significant losses for utilities.


NextEra To Acquire Hawaiian Electric In $4.3 Billion Merger Deal

If approved, the agreement between the two energy companies would produce one of North America's largest renewable energy players.


EPA Racks Up Over 1.6 Million Comments On Carbon Pollution Plan

Months after the U.S. Environmental Protection Agency released its Clean Power Plan, which will create new regulations for existing power plants, the agency says it has received loads of feedback to consider.


Smart Grid Interest Continues To Spread Among U.S. Rural Utilities

A new survey gauges rural smart grid efforts across the country and offers key findings, one of which is that nearly all utilities polled are doing something to modernize their systems.

S&C Electric_id176
edf_id180