Energy can neither be destroyed nor be created, but it can be transformed from one form to another and every energy type comes with a pro and a con. Here is the list of that.

1. Solar Energy:
   • Pros: Low maintenance is required; do not cause noise, air and water pollution; availability is there; it’s a renewable source of energy; sustainability.
   • Cons: High implementation cost; solar panels emit harmful gases; expensive to make; needs large area.
2. Geothermal Energy:
   • Pros: Generates fewer amounts of toxic gases; doesn’t need fossil fuels; renewable resource of energy; use the concept of heating and cooling; reliable.
   • Cons: Heavy costs are involved; it may cause earthquakes; reservoirs may get exploited.
3. Hydropower Energy:
   • Pros: Doesn’t require much effort; doesn’t cause pollution; it’s a reliable source of energy; flexibility is there.
   • Cons: It is expensive; creates imbalance in marine life; change the temperature; people and animals are forced to dislocate; whole setup may get affected by drought.
4. Nuclear Energy:
   • Pros: Low cost for operations; efficient as compared to fossil fuels; no or very less carbon emissions.
   • Cons: Too much radioactive waste is generated; capital cost is high; uranium is finite in amount; wastes cause pollution; nuclear waste can cause health problems.
5. Wind Energy:
   • Pros: Clean source of energy; space efficient; low operating costs; potential is high for power generation; fuel is available worldwide; renewable and sustainable source of energy.
   • Cons: Investment is high; more noise pollution; biological impacts are there; it kills birds; maintenance cost is high; can’t be operated if there is no flow of wind.
6. Tidal Energy:
   • Pros: Renewable energy source; effective and long lifespan; protects coastal region during high tides; no emission of greenhouse gases.
   • Cons: It is expensive and it is costly; it can’t compete energy emitted from fossil fuels; can’t operate if there is no high tide; it causes disturbance to marine life.
7. Biofuel Energy:
   • Pros: Made from wastes; causes less pollution as compared to other fossil fuels; it is cheap and effective; renewable source of energy; not much money and investment is required.
   • Cons: Produces greenhouse gases; less efficient than fossil fuels; production cost is more as compared to fossil fuels.
8. Coal Energy:
   • Pros: It is present in huge amounts; cost is very less; extraction process doesn’t require any tough or technical skills.
   • Cons: Impact on environment is high; causes huge pollution; though it is present in huge amounts but still it is finite; byproducts like mercury, selenium and sulphur are harmful.
9. Petroleum Energy:
   • Pros: Present almost everywhere; reliable source of energy; doesn’t require much investment.
   • Cons: It causes pollution; improper disposal of oils can cause damage; drilling affects the local wildlife habitat; produces greenhouse gases; causes erosion.
10. Hydrogen Energy:
    • Pros: It uses latest technology; comparatively cheaper; requires less carbon hence, less pollution.
    • Cons: Pollutes the environment; fuel efficiency is low; produces greenhouse gases; indirectly requires fossil fuels.

Some of them are conventional methods while others are non-conventional methods, encourage the use of latest methods that causes less harm to the environment.