Renewable Energy Solutions


Solar Co-Generationsolar1

Generate cheap, green electricity from sunlight

Solar photovoltaics (PV),work by capturing the sun’s energy using photovoltaic cells. These cells don’t need direct sunlight to work – they can still generate some electricity on a cloudy day. The cells convert the sunlight into electricity, which can be used to run household appliances and lighting.
The benefits of solar electricity

  • Cut your electricity bills. Sunlight is free, so once you’ve paid for the initial installation, your electricity costs are reduced.
  • Cut your carbon footprint. Solar electricity is green renewable energy and doesn’t release any harmful carbon dioxide or other pollutants. A typical home solar PV system could save over a ton of carbon dioxide per year – that’s more than 30 tonnes over its lifetime

How do solar panels (PV) cells work?

Solar PV cells are made from layers of semi-conducting material, usually silicon. When light shines on the cell it creates an electric field across the layers. The stronger the sunshine, (higher the irradiation level) the more electricity is produced. These cells are mounted together in panels or modules either mounted on your roof or on the ground.

The power of a PV cell is measured in kilowatts peak (kWp). That’s the rate at which it generates energy at peak performance in full direct sunlight during the summer.

In eight minutes the sun sends as much energy to the earth as mankind consumes in one year. RESSA has the information and resources to help you use this available power.

Solar PV is among the fastest gorowing power generation technologies. RESSA, as an EPC, provides tailor made utility-scale PV power plants.

CSP or Concentrated Solar Power

Once thought to be too expensive to implement on smaller scales this concept is changing and in the foreseeable future there will be smaller scale CSP units operational.

The Concentrated Solar Power works on a concept of absorbing the suns rays via various solar troughs and/or heliotropes during the day and super-heating a storage system such as molten salt.  This super-heated material is then used to drive a turbine after sundown thereby supplying power over a longer period than conventional solar PV panels.

RESSA Renewable Energy Source is currently following the newest research.  Already there is a new large CSP project undertaken by Solar Reserve near Postmasberg in the northern Cape.



RESSA offers a comprehensive range of steam turbines from 45kW to 1,900MW, with the flexibility to address the specific requirements of your particular application. With over a century of experience and continuous development in steam turbine technology, Siemens has stayed at the forefront of development and is a prime partner for your business.

The gas turbine range has been designed and refined to help you meet the challenges of a dynamic market. Our 15 models with capacities from 4 to 375MW, are designed with your profitability in mind. Whatever the application, our gas turbines meet the requirements for efficiency, reliability and environmental compatability, giving low life-cycle costs and the best possible return on investment.

Trigeneration or combined cooling, heat and power (CCHP), is the process by which some of the heat produced by a cogeneration plant is used to generate chilled water for air conditioning or refrigeration. An absorption chiller is linked to the combined heat and power (CHP) to provide this functionality.



Methane gas is 21 to 25 times worse as a pollutant than carbon dioxide.

In practical terms, the release of 1 kg of methane is roughly the equivalent to the carbon dioxide emissions associated with the generation of 20kWh of electricity.

The solution? Use the methane enriched gas to generate electricity by means of a biogas anerobic digester.

The current most common and economical usage of methane enriched gas is such as the eThekwini Municipality uses to use their landfill gas to generate 700MW of electricity.