The Explorer is a one-of-a-kind search engine that showcases profitable climate solutions from all over the world which are part of an ever-growing, curated, and publicly-accessible database. Select your profile, your needs and climate goals to discover the solutions that fit best with your situation.

Explore Learn more

Cancel Confirm

My Search Alerts

The Solutions Explorer lets you create alerts that match your needs. You can create several alerts and you will receive a notification each time a new Solar Impulse Efficient Solutions is labeled and matches your filters.

Your Search Alerts will show up here.

Sign in to create alerts for your filters and search terms.

Sign in

Don't have an account?

Sign up

My Favorites

The Solutions Explorer lets you shortlist your favorite solutions.

Your favorites will show up here.

Sign in to add a solution to your favorites.

Sign in

Don't have an account?

Sign up

Contact the Solution's Provider

You can contact each Solution’s Provider through the « Solutions Explorer » contact form. The team will also follow up to make sure you’ll have an answer to your request.

Your contact form will show up here.

Sign in to contact the Solution's Provider

Sign in

Don't have an account?

Sign up

My Account

Sign in

Don't have an account?

Sign up


A transformer oil leak management system.

November 2019
Gallery DRH4 1
Gallery DRH4 1


DRH4's system provides alarms, automatic oil recuperation and instantaneous oil/water separation.

Most of the outdoor transformer contain insulating oil ranging from few hundred liters up to hundred of thousand liters, insulating oil is essential to avoid breakdown and when a transformer leaks, it is often discovered following an outage. The DRH4 system recovers all the leaking oil without any contact with the soil. It provides an alarm as soon as less than 1 liter of oil enter the main treatment system allowing the maintenance crew to intervene before further degradation. When a certain amount of oil has entered the system, it is directed to an oil reservoir for recuperation and possible recycling. All the water that might fall on the transformer is directed in the treatment system, separated from the oil and send to the surrounding ground through a filter with 0 % hydrocarbon going out. A capture system recovers all oil leaks from the transformer. It includes a basin and deflectors for protruding component. The DRH4 is adaptable to suit various transformer size and configuration. The 3 available models separate up to 160 liters by minutes of liquid.

Label Date November 26, 2019
By Voltra
From Canada
Maturity stage Initial market commercialization
Looking For Visibility ; Credibility support ; Networking ; Financial support

The environmental benefits

  • All captured water send back to the ground through an oil filter with 0% hydrocarbon deported
  • All liquids out of a transformer are captured

The Financial benefits

  • Breakeven point reached in less than 3 years

Activity Region

  • /

North america

Canada, United States,

  • Headquarters
  • Activity

Company Profile


Voltra Technologie develops innovative specialized products for high-voltage stations and wind farms.

View company profile
Headquarters Alma, QC G8B 4Y7, Canada
Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Voltra has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.