A company in  "Alternative Fuels" is involved in the development, production,  and/or distribution of fuels that are alternatives to traditional fossil  fuels such as petrol, diesel, or gas. This includes fuels such as biodiesel,  ethanol, hydrogen, or fuel cells. These companies may also be involved in  researching and creating new alternative fuel technologies, and often strive  to produce energy that is sustainable and less damaging to the environment.

1.  Biofuels: These are fuels derived from biomaterials, such as corn, sugarcane  or animal fats. They include fuels such as bioethanol and biodiesel.

2. Electric and Hybrid Fuels: These fuels come in the form of electricity,  which is used to power hybrid or full-electric vehicles. The electricity can  come from various sources, including wind, solar or hydroelectric  power.

3. Natural Gas: Compressed natural gas (CNG) and liquefied natural gas  (LNG) are commonly used as alternatives to gasoline in certain types of  vehicles.

4. Hydrogen: Hydrogen can be used in cars designed to run on this  particular fuel. It is generally produced from natural gas, but it can also  be produced from water using electricity.

5. Propane: Also known as liquefied petroleum gas (LPG), propane is used as  an alternative fuel for cars, trucks and buses.

6. Solar Power: Though not a traditional fuel, solar power can be used to  generate electricity for electric and hybrid vehicles.

7. Ethanol: This is a type of alcohol made from plant materials like corn  or sugarcane. It's often mixed with gasoline to decrease a vehicle's  emissions.

8. Methanol: Similar to ethanol, methanol is an alcohol-based fuel that can  be produced from natural gas or coal. It's often used in racing cars.

9. Biomethane: This gas is produced from organic materials and can be used  as a fuel in certain types of vehicles.

10. Algae Fuel: Extracted from algae, this biofuel is a promising future  resource thanks to its rapid growth rate and its ability to be harvested  year-round.

11. Nuclear Power: Though it's primarily used to generate electricity,  nuclear power could also potentially be used as an alternative fuel in  certain types of vehicles, for instance, in space propulsion.

Each of these fuels has its own advantages and disadvantages, and research  on their viability as alternatives to fossil fuels is ongoing.

Alternative  fuels such as ethanol, biodiesel, natural gas, electricity, and hydrogen  provide a means to reduce carbon dioxide (CO2) emissions and other greenhouse  gases.  

1. Lower CO2 Emissions: Alternative fuels often emit less CO2 when burned  compared to fossil fuels. For instance, burning natural gas emits about half  the CO2 compared to burning coal. Similarly, biodiesel and ethanol often emit  less CO2 compared to gasoline.    

2. Renewability and Carbon Recycling: Alternative fuels like biofuels are  produced from renewable resources such as plants, agricultural waste, or even  algae in the case of advanced biofuels. These plants absorb CO2 from the  atmosphere as they grow, effectively recycling the CO2 when the fuel is burned.  

3. Zero Emission Fuels: Some alternative fuels like hydrogen and  electricity can be completely carbon-free, if produced sustainably. For  example, if the hydrogen is produced through electrolysis powered by  renewable energy or if the electricity used to recharge electric vehicle  batteries is generated from renewable sources.  

4. Increased Energy Efficiency: Alternative fuels can lead to new  technologies that use energy more efficiently. For example, electric vehicles  are generally more efficient than internal combustion engines, meaning less  energy (and therefore less carbon) is required for each mile traveled.  

5. Energy Independence: Many alternative fuels can be produced locally,  reducing dependence on foreign oil and promoting energy security. This can  result in a more stable energy system and less fossil fuel use overall.  

Through these mechanisms, alternative fuels can substantially contribute to  decarbonization, slowing climate change and mitigating its effects.

1.  Establish Your Objective: Clearly articulate what carbon-neutral goals you  are aiming to achieve. This could be anything from fully switching to  alternative fuels for your production, to simply incorporating more  environmentally-friendly practices into your business model.

2. Research: Start by doing an extensive research on different alternative  fuel vendors available in the market. Look into the type of fuels each vendor  provides, their production methods and whether they adhere to regulatory  standards regarding carbon emission.

3. Check Experience and Reputation: Take a look at the track record, client  testimonials, industry recognition, and the overall reputation of all  potential vendors. This will give you insight into the reliability and  efficiency of their services.

4. Cost-effectiveness: Consider the cost of switching to an alternative  fuel. It’s important to choose a vendor that offers competitive pricing for  their services.  

5. Technology: Ensure the vendor has the necessary technology for the  production of alternative fuels. The technology should be effective and  efficient in ensuring minimal environmental impact.

6. Customer Support: The vendor should be able to provide excellent  customer service and have an efficient complaint resolution mechanism. This  is important for timely resolution of any technical or supply issues.  

7. Certifications and Credentials: Check if the vendor possesses necessary  certifications and follows industry standards in alternative fuel  production.

8. Investigate Their Sustainability Practices: Look into how each vendor  achieves sustainability and if their practices align with your company's own  objectives.

9. Vendor Responsiveness: The vendor should be responsive and keen on  addressing your concerns.

10. Request for Proposal (RFP): Prepare a detailed RFP and send it to the  shortlisted vendors. It could contain specifics of your requirement,  expectations and terms of engagement including timelines and pricing.

11. Evaluate Proposals: Evaluate all the responses received for your RFP,  and identify the vendors that meet your criteria.

12. Site Visits: Pay site visits to the shortlisted vendors to view their  facilities and have in-person discussions which can help make a more informed  decision.

Finally, it's advisable to involve a social and environmental auditing firm to verify the claims of the vendor regarding the benefits and the impacts of  their alternative fuels. This way, you'll be certain you're choosing a truly  eco-friendly vendor.