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Offset the emissions you cannot reduce

Offsetting is about investing in projects that make carbon savings elsewhere. You can do this by purchasing carbon credits. We have carefully put together a portfolio of carbon credits that you can buy to offset your carbon footprint.

They all independently verified by the Gold Standard, so you can be confident that the carbon savings are real.

Once you have purchased your credits, we will retire them in the Gold Standard public registry to prevent double counting and to put your offset on the public record.

Our portfolio

Cleaner, Safer Water in Cambodia

In Cambodia, untreated water and poor sanitation cause an estimated 10 million cases of diarrhoea and 10,000 deaths each year, mostly in rural areas among children under the age of five. Furthermore, Cambodia has lost 2.17Mha of tree cover from 2001 to 2018, equivalent to a 25% decrease in tree cover since 2000 and 914Mt of CO₂ emissions. By distributing over 600,000 ceramic water filters, Hydrologic has reached more than 1.5 million people, about 10% of the population across Cambodia and saves about 130,000 tons of CO2 every year, shifting customers away from using wood or charcoal and opting for another water treatment method.

Hydrologic manufactures the filters in a factory 40 km from Phnom Penh, employing 25 staff, ensuring the quality of the product all along the production chain.

Hydrologic supports the local production and distribution of an affordable water purifier technology to local communities. Purifiers improve public health, reduce environmental impacts, and stimulate local economic activity.

By purchasing these carbon credits, you will enable Hydrologic to continue researching and developing purifier technology and train local producers and distributors, further scaling up the project’s impacts.


  • National Energy Globe Award (2013)
  • Ashden Award (2012)
  • GIZ IMPACT Business Award (2011)

Key impacts per year of project operation

  • 90,000 tonnes of CO2e saved per year (equivalent to taking 36,000 cars off the road)
  • 300,000+ Filters distributed providing clean water to nearly two million Cambodians
  • 74% of those who previously boiled water report less exposure to smoke

For every 1000 carbon credits purchased:

  • $30,000 savings by households on fuel purchase and collection*
  • 5 hectares of Cambodia’s forest protected*
  • 34 fewer cases of acute lower respiratory illness*

*Figures are based on data from Lord, R. (2014) Social Return on Investment of Nexus Carbon for Development Projects. This study calculated the co-benefits for Hydrologic using 2016–2017 data.

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Gold Standard Certified Project

Gold Standard Certified Project


This project supports Sustainable Development Goals...

Renewable, Community Biogas in India

Most Indian families rely on firewood and kerosene to meet their daily energy needs for cooking. Each week, women and children collect firewood from the nearby forests, which eventually in a longer period contributes to deforestation. Traditional cooking methods based on firewood also cause respiratory and ocular infections among users, mainly women and children. Eventually, the use of chemical fertilizers for agriculture reduces the soil yield and its fertility. Providing each family with a biogas tank directly contributes to reduce the pressure on wood resources and allows beneficiaries to produce their own natural fertilizers for their crops.

Biogas is a renewable energy, produced via the fermentation and decomposition of animal dung retained inside an airtight tank (known as a digester).