See below for the full list of every methane digester stock in Carbon Collective's Climate Index.

Waste as opportunity

Agricultural, industrial, and human digestion processes inevitably and constantly create organic waste. From residues, excrement, to waste, the spoiling of these materials emits fugitive methane gas as they decompose. 

Humans have a choice: we can keep letting the methane gas escape into the atmosphere, where it creates a warming effect 34 times stronger than CO2 over a hundred-year period, or we can capture the methane as they arise and turn it into usable, clean energy.

Turning methane into energy

The way to turn methane into energy is through methane digesters. First, organic wastes are mixed in an air-tight, oxygen-less tank, where bacteria and other microbes break them down into their component parts. Over the course of days or weeks, biogas rises to the top, while solid digestate falls to the bottom, concentrating nutrients like nitrogen. Biogas is a blend of methane and CO2 that can be used raw or further purified into biomethane, akin to natural gas. 

Biogas can be used for cooking, lighting and heating when used at the household level, reducing demand for wood, charcoal, and dung as fuel sources. When used at an industrial scale, it can displace dirty fossil fuels for heating and electricity generation, and when cleaned of contaminants, it can even be used in vehicles that would otherwise rely on natural gas.

Right now, large methane digesters generate about 100 TWh of electricity around the world, or 0.3% of global electricity generation. Project Drawdown estimates that if methane digesters can be expanded to generate up to 761 TWh, they can help avoid 9.8 gigatons of greenhouse gas emissions by 2050. 

These companies are making it happen.

In the Climate Index, we take all of the companies that capture landfill methane to convert it into energy and exclude those that derive a greater share of revenue from fossil fuel-dependent business than from methane capture. We further exclude companies that only capture methane from less than 50% of the landfill sites they operate. And as always, we take out penny stocks whose share prices were lower than $0.50 in our last update. 

This means that the Climate Index includes all of the methane digester companies that are at the forefront of reducing methane emissions from waste.

If you are a Carbon Collective member, you own all of these companies through the Climate Index.

Clean Energy Stocks in the Climate Index

Filters:
Index Status:
% ALLOCATED icon Company Type icon Company icon Category icon DESCRIPTION 
0.47%
Passed Revenue Filter
Acuity sells lighting and building management products, including LED drivers, power suppliers, inverters, and more, and sells no products specifically to the fossil fuel industry
0.02%
Passed Revenue Filter
Agrify makes its revenue in part from the sale of LED grow lights, a Drawdown solution. It receives no revenue from the fossil fuel indsutry.
0.02%
Passed Revenue Filter
Amtech Systems derives its revenue in part from LED lighting, a drawdown solution, through the sale of capital equipment and related consumables for use in LEDs while receiving no revenue from the fossil fuel industry.
5.00%
Passed Revenue Filter
Applied Materials, derives its revenue in part from the promotion of LEDs and solar PVs, through the sale of LED products and products used to manufacture solar PVs. It receives no revenue from the fossil fuel indsutry.
0.02%
Passed Revenue Filter
AXT sells semiconductor substrates used in LEDs, thermal imaging, and autonomous vehicles. It makes no products specifically for the fossil fuel industry, thus passing our revenue filter.
-
LED
Corning
Lacks Sufficient Information
Corning produces LED products and also emissions control products for the fossil fuel industry. It is unclear which is a greater percentage of the revenue.
-
LED
Cree
Failed Defense Filter
Cree sells materials products and RF devices used in military communications, which fails the defense filter because it sells something to the defense industry that is not a Drawdown solution.
-
LED
CVD Equipment
Failed Defense Filter
CVD sells MesoPlasma™ printing services and products (heaters, antennas, and sensors) to the defense industry, which fails the revenue filter because it sells something to the defense industry that is not a Drawdown solution.
-
LED
Daktronics
No Drawdown Solution
Daktronics sells LED displays for various purposes like sports, architecture, and more.
0.28%
Passed Revenue Filter
Diodes sells discrete semiconductor products, which are heavily used in the consumer electronics industry, as well as analog products comprising power management devices like LED lighting drivers, which are crucial to an LED circuit.
-
LED
eMagin
Failed Defense Filter
eMagin sells weapons sights, which fails the defense filter because this would be categorized as a weapons-related sale.
-
LED
Energizer Holdings
No Drawdown Solution
Energizer Holdings, makes only batteries for household products and lighting products for flashlights and headlamps, neither of which are Drawdown solutions.
0.02%
Pure Play
Energy Focus makes a variety of LED products, such as replacements for fluorescent lamps and retrofits for military facilities.
0.02%
Passed Revenue Filter
Highway Holdings does metal stampings and manufactures a variety of mechnical and electronic products, including LED power supplies, otherwise known as LED drivers.
-
LED
LG Display
No Drawdown Solution
The LEDs that LG makes are all used in their TV and smartphone displays. Tech displays are not a Drawdown solution.
0.02%
Passed Revenue Filter
LSI generates 67% of its revenue from LEDs for general use in parking garages and restaurants, and the rest from visual image elements for graphic displays.
0.05%
Passed Revenue Filter
Magnachip Semiconductor derives its revenue in part from the promotion of LEDs and solar PVs, through the sale of LED products and products used with solar PVs. It receives no revenue from the fossil fuel indsutry.
-
LED
Methode Electronics
No Drawdown Solution
Methode sells electronic components like LEDs and sensors to automotive OEMS, external lighting solutions, and telecommunications products.
0.02%
Passed Revenue Filter
O2Micro sells integrated circuits that have many applications including LEDs, zero emission vehicles, phones, and more.
0.02%
Passed Revenue Filter
Orion Energy Systems, derives its revenue in part from LED lighting products and works on retrofit projects, both of which are Drawdown solutions. It receives no revenue from the fossil fuel industry.
0.40%
Passed Revenue Filter
Power Integrations sells analog and mixed-signal integrated circuits among other electronic circuitry, applications of which include LCD monitors, computers, and LED lighting.
0.02%
Pure Play
SemiLEDs sells LED chips, components, and modules, which are used for general lighting, horticulture, polymer curing, and more.
-
LED
SGOCO Group
No Drawdown Solution
SGOCO made zero revenue from their Drawdown solution, their LED business, in 2020
-
LED
Steel Partners Holdings
Lacks Sufficient Information
Steel Partners Holdings L.P. produces LEDs, a Drawdown solution, but also produces tubing for the oil and gas industry, which is considered fossil fuel revenue. It also produces blades for meat/fish processing plants.
0.56%
Passed Revenue Filter
Universal Display sells LED products for display and solid-state lighting applications. It also provides contract research services for chemical materials synthesis.
Acuity sells lighting and building management products, including LED drivers, power suppliers, inverters, and more, and sells no products specifically to the fossil fuel industry
Passed Revenue Filter
0.02%
Agrify makes its revenue in part from the sale of LED grow lights, a Drawdown solution. It receives no revenue from the fossil fuel indsutry.
Passed Revenue Filter
Amtech Systems derives its revenue in part from LED lighting, a drawdown solution, through the sale of capital equipment and related consumables for use in LEDs while receiving no revenue from the fossil fuel industry.
Passed Revenue Filter
Applied Materials, derives its revenue in part from the promotion of LEDs and solar PVs, through the sale of LED products and products used to manufacture solar PVs. It receives no revenue from the fossil fuel indsutry.
Passed Revenue Filter
0.02%
AXT sells semiconductor substrates used in LEDs, thermal imaging, and autonomous vehicles. It makes no products specifically for the fossil fuel industry, thus passing our revenue filter.
Passed Revenue Filter
Corning produces LED products and also emissions control products for the fossil fuel industry. It is unclear which is a greater percentage of the revenue.
Lacks Sufficient Information
-
Cree sells materials products and RF devices used in military communications, which fails the defense filter because it sells something to the defense industry that is not a Drawdown solution.
Failed Defense Filter
CVD sells MesoPlasma™ printing services and products (heaters, antennas, and sensors) to the defense industry, which fails the revenue filter because it sells something to the defense industry that is not a Drawdown solution.
Failed Defense Filter
Daktronics sells LED displays for various purposes like sports, architecture, and more.
No Drawdown Solution
0.28%
Diodes sells discrete semiconductor products, which are heavily used in the consumer electronics industry, as well as analog products comprising power management devices like LED lighting drivers, which are crucial to an LED circuit.
Passed Revenue Filter
eMagin sells weapons sights, which fails the defense filter because this would be categorized as a weapons-related sale.
Failed Defense Filter
Energizer Holdings, makes only batteries for household products and lighting products for flashlights and headlamps, neither of which are Drawdown solutions.
No Drawdown Solution
Energy Focus makes a variety of LED products, such as replacements for fluorescent lamps and retrofits for military facilities.
Pure Play
Highway Holdings does metal stampings and manufactures a variety of mechnical and electronic products, including LED power supplies, otherwise known as LED drivers.
Passed Revenue Filter
The LEDs that LG makes are all used in their TV and smartphone displays. Tech displays are not a Drawdown solution.
No Drawdown Solution
LSI generates 67% of its revenue from LEDs for general use in parking garages and restaurants, and the rest from visual image elements for graphic displays.
Passed Revenue Filter
Magnachip Semiconductor derives its revenue in part from the promotion of LEDs and solar PVs, through the sale of LED products and products used with solar PVs. It receives no revenue from the fossil fuel indsutry.
Passed Revenue Filter
Methode sells electronic components like LEDs and sensors to automotive OEMS, external lighting solutions, and telecommunications products.
No Drawdown Solution
O2Micro sells integrated circuits that have many applications including LEDs, zero emission vehicles, phones, and more.
Passed Revenue Filter
Orion Energy Systems, derives its revenue in part from LED lighting products and works on retrofit projects, both of which are Drawdown solutions. It receives no revenue from the fossil fuel industry.
Passed Revenue Filter
Power Integrations sells analog and mixed-signal integrated circuits among other electronic circuitry, applications of which include LCD monitors, computers, and LED lighting.
Passed Revenue Filter
0.02%
SemiLEDs sells LED chips, components, and modules, which are used for general lighting, horticulture, polymer curing, and more.
Pure Play
SGOCO made zero revenue from their Drawdown solution, their LED business, in 2020
No Drawdown Solution
Steel Partners Holdings L.P. produces LEDs, a Drawdown solution, but also produces tubing for the oil and gas industry, which is considered fossil fuel revenue. It also produces blades for meat/fish processing plants.
Lacks Sufficient Information
Universal Display sells LED products for display and solid-state lighting applications. It also provides contract research services for chemical materials synthesis.
Passed Revenue Filter
Passed Revenue Filter
Acuity sells lighting and building management products, including LED drivers, power suppliers, inverters, and more, and sells no products specifically to the fossil fuel industry
0.47%
Passed Revenue Filter
Agrify makes its revenue in part from the sale of LED grow lights, a Drawdown solution. It receives no revenue from the fossil fuel indsutry.
0.02%
Passed Revenue Filter
Amtech Systems derives its revenue in part from LED lighting, a drawdown solution, through the sale of capital equipment and related consumables for use in LEDs while receiving no revenue from the fossil fuel industry.
0.02%
Passed Revenue Filter
Applied Materials, derives its revenue in part from the promotion of LEDs and solar PVs, through the sale of LED products and products used to manufacture solar PVs. It receives no revenue from the fossil fuel indsutry.
5.00%
Passed Revenue Filter
AXT sells semiconductor substrates used in LEDs, thermal imaging, and autonomous vehicles. It makes no products specifically for the fossil fuel industry, thus passing our revenue filter.
0.02%
Lacks Sufficient Information
Corning produces LED products and also emissions control products for the fossil fuel industry. It is unclear which is a greater percentage of the revenue.
-
Failed Defense Filter
Cree sells materials products and RF devices used in military communications, which fails the defense filter because it sells something to the defense industry that is not a Drawdown solution.
-
Failed Defense Filter
CVD sells MesoPlasma™ printing services and products (heaters, antennas, and sensors) to the defense industry, which fails the revenue filter because it sells something to the defense industry that is not a Drawdown solution.
-
No Drawdown Solution
Daktronics sells LED displays for various purposes like sports, architecture, and more.
-
Passed Revenue Filter
Diodes sells discrete semiconductor products, which are heavily used in the consumer electronics industry, as well as analog products comprising power management devices like LED lighting drivers, which are crucial to an LED circuit.
0.28%
Failed Defense Filter
eMagin sells weapons sights, which fails the defense filter because this would be categorized as a weapons-related sale.
-
No Drawdown Solution
Energizer Holdings, makes only batteries for household products and lighting products for flashlights and headlamps, neither of which are Drawdown solutions.
-
Pure Play
Energy Focus makes a variety of LED products, such as replacements for fluorescent lamps and retrofits for military facilities.
0.02%
Passed Revenue Filter
Highway Holdings does metal stampings and manufactures a variety of mechnical and electronic products, including LED power supplies, otherwise known as LED drivers.
0.02%
No Drawdown Solution
The LEDs that LG makes are all used in their TV and smartphone displays. Tech displays are not a Drawdown solution.
-
Passed Revenue Filter
LSI generates 67% of its revenue from LEDs for general use in parking garages and restaurants, and the rest from visual image elements for graphic displays.
0.02%
Passed Revenue Filter
Magnachip Semiconductor derives its revenue in part from the promotion of LEDs and solar PVs, through the sale of LED products and products used with solar PVs. It receives no revenue from the fossil fuel indsutry.
0.05%
No Drawdown Solution
Methode sells electronic components like LEDs and sensors to automotive OEMS, external lighting solutions, and telecommunications products.
-
Passed Revenue Filter
O2Micro sells integrated circuits that have many applications including LEDs, zero emission vehicles, phones, and more.
0.02%
Passed Revenue Filter
Orion Energy Systems, derives its revenue in part from LED lighting products and works on retrofit projects, both of which are Drawdown solutions. It receives no revenue from the fossil fuel industry.
0.02%
Passed Revenue Filter
Power Integrations sells analog and mixed-signal integrated circuits among other electronic circuitry, applications of which include LCD monitors, computers, and LED lighting.
0.40%
Pure Play
SemiLEDs sells LED chips, components, and modules, which are used for general lighting, horticulture, polymer curing, and more.
0.02%
No Drawdown Solution
SGOCO made zero revenue from their Drawdown solution, their LED business, in 2020
-
Lacks Sufficient Information
Steel Partners Holdings L.P. produces LEDs, a Drawdown solution, but also produces tubing for the oil and gas industry, which is considered fossil fuel revenue. It also produces blades for meat/fish processing plants.
-
Passed Revenue Filter
Universal Display sells LED products for display and solid-state lighting applications. It also provides contract research services for chemical materials synthesis.
0.56%
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