Solar and Diesel Generators Case Study

Upgrading diesel gensets to hybridized diesel-solar microgrids has never been easier

A portable gasoline generator isn’t designed to supply constant power for extended periods. For a portable application that requires a steady power source, EXOrac based System Integrators Microgrids are extremely cost-effective to operate as demonstrated below:

1. Fuel-Driven Generators

The total expense of operating portable fuel-driven generators extends far beyond the initial purchase price. To begin, manufacturers only guarantee fuel-driven generators to work for a short period of time, usually a couple of years.

However, the real cost of fuel-driven power generation systems from the logistics of supplying the fuel required- consistently transporting fuel, storing fuel, and maintaining equipment that uses fuel.

These costs are compounded if the generator is used in a remote location (often requiring air transport) or after a disaster. A reduction in the amount of logistics required to support a fuel-driven generator can have a significant cost benefit.

Fuel generators may be effective as temporary power production but are not suitable for long-term power requirements. The need is greater than ever for a system that incorporates independent, inexhaustible power sources into portable power markets.

The following Case Studies demonstrates the effectiveness of EXOrac based System Integrators Microgrids in various countries when used in hybridization mode with a diesel genset.

2. PWRstation
A solar generator is an effective complement to a fuel-driven generator in countless applications. Solar generators do not have high fuel and maintenance expenses nor the noise, fumes, and toxic chemicals associated with fuel-driven power generators.

With its simple, highly transportable design, PWRstation serves as a viable independent power source that alleviates the high costs associated with supplying fuel in markets where portable power generation is necessary.

The system can pay for itself in a very short period of time. PWRstations come in many power variations and easily scale up to meet any size of power requirement.

It has minimal operating cost, it is deployed and redeployable in minutes, requires virtually no maintenance, and has a much longer manufacturer‘s warranty for power output. PWRstations are also portable, rugged and are ideal for land, sea & air transport.

3. Efficiency

What separates solar and fuel-driven generators is their levels of energy efficiency. A solar generator harvests power all day, can store it in batteries, and supply that stored power as needed. The result is an extremely efficient use of power. Comparatively, a fuel-driven generator must be operating in order to supply any power, even if the amount required is minimal or intermittent. It is very common for fuel generators to provide power to appliances that consume only a fraction of the generator’s rated power output, thus, consuming unnecessary fuel when operating as they only run at a single speed.

4. Hybrid Systems

EXOrac based Microgrids can be used with existing fuel-driven power generators to lessen the burden of fuel-driven generator operation. A hybrid configuration mitigates the risk of dependency on only one power source, while simultaneously increasing operating efficiency dramatically. A hybrid system also provides the operator with maximum autonomy and flexibility (based on the environmental conditions) and ensures that traditional fuel-driven generators are used only as necessary, mitigating their operation. The key to successful integration of multiple power sources is proper power management, and the installation of a primary battery bank through which all power is channeled.

Related documents and independent studies :

A cost and reliability comparision between Solar and Diesel powered pumps

The Express Tribune : Solar power is now cheaper than diesel generators

PV Magazine – Off-grid 2.0

Solar Vs Diesel Calculator