Renewable sources

Pioneering renewable energy for business and communities & more

Renewable technologies

An overview of the various renewable energy technologies to produce electricity, heat and fuels

Biomass and solar energy sources

WolfeWare website:

Renewable energy derives from the elements earth, air fire and water, as detailed here.

The most commonly used options are shown with a darker border below.

Elemental renewable technologies convert the energy from these elements directly to electricity or heat or both (CHP):

 

Source

Heat

CHP

Power

E

 

A

Geothermal

Geothermal heating system

 

Geothermal power station

 

 

R

 

T

 

H

Ground heat

Ground source heat pump

 

 

 

A

 

I

Air heat

Air source heat pump

 

 

 

R

Wind

 

 

 

F

I

R

E

Sun

Rooftop solar thermal system

 

Concentrating solar power station

 

Rooftop photovoltaic system

 

 

Hydro (rivers)

 

 

Hydro-power at the Hoover Dam

 

W

Tidal range

 

 

Tidal range power station at La Rance

 

A

 

T

 

E

Tidal stream

 

 

Tdal stream turbine in Northern Ireland

 

R

Water heat

Water source heat pump

 

 

Ocean Thermal Energy Conversion experiment

 

 

Waves

 

 

Farm of Pelamis wave-powered generators

 

Bioenergy technologies use the elements to grow biomass fuels, to be used for heat, combined heat & power or transport:

 

Source

Fuel

Heat

CHP

 

Growing energy crops

Corn can be used to produce biofuels

 

Special fast rotation crops like willow and miscanthus produce biomass efficiently

 

Solid roundwood can be burnt in boilers or converted to chips and pellets

 

B

 

I

Bio-fuel production and use

Biofuel production plant

 

Some fireplaces can use biofuels

 

Biofuel fired combined heat and power plant

 

O

 

-

 

E

Biomass combustion

Wood fuel is normally processed as chips or pellets for use in power stations

 

A biomass boiler

 

Biomass combined heat and power plant

 

N

 

E

 

R

Gas capture: landfill, sewage

Landfill gas capture system

 

Heating system for neighbouring hospital fuelled by landfill gas

 

Landfill gas used for power production

 

G

 

Y

Anaerobic digestion; microbial biogas

Anaerobic digestion plant

 

Biogas plant provides heat for local village

 

Combined heat and power station fuelled by biogas

 

 

Pyrolysis & other gasification technologies

Biomass and waste gasification

 

Domestic scale biogas boiler

 

Biogas-fired combined heat and power plant

 

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