Types of Carbon Project

The following types of project are listed in Carbon Catalog. Click to view projects of each type.

  • Solar Power - Generate energy from sunlight.

    The sun is a limitless source of energy for electricity and heating. If harnessed efficiently, the sunshine reaching the Earth would be enough to satisfy all our energy requirements 6,000 times. A solar carbon credit subsidizes the high cost of installing a solar power system. More...

  • Geothermal Power - Create electricity from underground heat.

    A vast amount of energy is stored in the Earth as heat. A geothermal power plant uses a pair of holes drilled into the ground. Water is pumped down one hole and emerges from the second as steam. This steam is used to drive a turbine, from which electricity can be generated. More...

  • Wind Power - Use wind to create electricity.

    Natural winds can be converted into electricity using turbines. Currently, around 1% of the world's electricity comes from wind, but wind power is not yet cost effective relative to fossil fuels. By purchasing a wind carbon credit, you help wind power compete with coal and gas. More...

  • Fuel Efficiency - Burn a particular fuel more efficiently.

    When a fuel such as wood and petrol is burned, some of the energy is lost. More efficient burners have been developed, but they are expensive for users in the developing world. By purchasing an efficiency carbon credit, you are helping to pay for these new burners. More...

  • Hydroelectric Power - Harness water flow for electricity.

    Hydroelectric power already provides 19% of the world's electricity. In most cases, a dam is built to hold back a river, from which focused jets of water are used to drive turbines. By purchasing a hydro carbon credit, you are helping to fund a plant's initial construction. More...

  • Fuel Substitution - Switch to a fuel which emits less carbon.

    Sometimes a particular fuel is used to generate energy, even though a different fuel would be more carbon efficient. The new fuel is not substituted due to the upfront cost of making the switch. By purchasing a fuels carbon credit, you are reducing this cost.

  • Efficient Lighting - Replace light bulbs with fluorescent lamps.

    Standard incandescent light bulbs lose around 90% of their input energy as heat. A compact fluorescent lamp (CFL) is 4 to 5 times more efficient, but much more expensive. By purchasing a lighting carbon credit, you are distributing CFLs to people who could not afford them. More...

  • Heat-Electricity Cogeneration - Create electricity and heat together.

    In any system which generates electricity, heat is a byproduct which goes to waste. A cogeneration system captures this heat and extracts more useful energy from it. Cogeneration systems have a high upfront cost, so a cogen carbon credit helps make them viable. More...

  • Biomass Combustion - Burn farm waste to generate electricity.

    Farming generates a lot of waste. For example, cow manure emits methane, a potent greenhouse gas. By purchasing a residue carbon credit, you are subsidizing a project which prevents methane emissions by burning the waste. As a bonus this also generates electricity. More...

  • Material Substitution - Change the input for an industrial process.

    Many industrial processes can work with a variety of input materials, each of which has a different cost and carbon footprint. Companies will usually choose the cheapest option, ignoring carbon emissions. By purchasing a materials carbon credit, you are defraying the cost of switching.

  • Forestation - Plant trees which absorb carbon dioxide.

    Trees absorb carbon dioxide via photosynthesis. By purchasing a forests carbon credit, you are funding the planting of new trees to increase the rate of this natural process. Reforestation credits are controversial, since it is hard to predict how long the trees will remain standing. More...

  • Environmental Buildings - Make buildings more energy efficient.

    Most buildings are wasteful in their use of heating, cooling and electricity. This can be improved with insulation, temperature control and new appliances. By purchasing a buildings carbon credit, you are helping building to meet efficiency standards such as LEED. More...

  • Industrial Methane - Burn methane at industrial waste sites.

    Many sewage plants and landfill sites emit methane, a potent greenhouse gas. Every tonne of methane causes 20-70 times as much warming as a tonne of carbon dioxide. Instead of being released into the atmosphere, this methane can be burned to generate electricity. More...

  • Public Transportation - Subsidize or encourage the use of public transport.

    Around 14% of global greenhouse gas emissions come from transportation. Public transport combines the journeys of dozens of people, and is far more efficient than private cars. By purchasing a transport carbon credit, you are subsidizing or encouraging its use. More...

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