In this report the effects of PV integration into diesel driven micro-grids was investigated. The focus was set to the fuel saving potential due to the PV integration and the resulting economics for the system.
The report starts with a summary of the most relevant technical aspects that need to be considered for the integration of PV in a diesel driven micro-grid.
Then the report analyzed the different types of systems that are of interest for the integration of PV. From this analysis three case studies with quite different electric demand profiles were identified for which a detailed simulation was performed. The focus was on the effects of varying PV penetrations and the corresponding fuel saving potential and thus the economics of the system. The systems under investigation were typical diesel driven micro grid use cases, a Hospital complex in Haiti, a rural village in Nepal and a mine in South-Africa. To get comparable results for all systems the same specific component costs were assumed.
The simulations showed a reduction of fuel consumption and the levelized costs of electricity (LCOE) for all systems and all PV penetration levels based on peak power except for very high PV penetrations (> 150%) for the case of the rural village in Nepal. The benefits were particularly high for the Hospital case in Haiti where the demand fitted very well the PV production curve and the mine case in South-African where the load was extremely constant on a high level.
Concerning the minimum value of the LCOE the PV penetration levels for the three case studies were very different. For the hospital in Haiti a PV penetration level of 110% was found as optimum leading to a fuel saving of about 30% and a cost reduction of about 6 cents. For the rural village in Nepal the minimum was found at a penetration level of about 65% resulting in only about 12% of fuel saving and two cent price reduction. For the mine in South-Africa a minimum LCOE value was simulated for a PV penetration of 135% and a fuel saving reduction of about 27% and a LCOE reduction of about five cents.
By adding a battery to a PV diesel system, the LCOE remains the same or even decreases slightly in the case of the rural village were the demand does not fit well with the PV production curve, but allows for higher PV penetration and a higher overall share of renewable energy. As a rule of thumb, a battery capacity of 30% of the maximum load value could be assumed to be reasonable, depending on the battery system cost that was estimated with a conservative value of 800 Euro/ kWh.
For use-cases where the load is not well fitting the PV production, the integration of a storage system can be of even higher interest. Particularly if the battery prices are further reducing and the diesel prices are remaining on high levels.
Australia's Chief Scientist Alan Finkel points out, in this interview, the need for Australia to develop better storage systems and reflects on the recent report from ACOLA. California Energy Commissioner Andrew McAllister, also warns Australia to pursue demand side...Read more
Industry misconceptions around high cost and poor market interest in energy efficient homes continue to obstruct the mass adoption of low carbon housing. Josh’s House demonstrates that low carbon housing is accessible and cost effective. The Star Performers series showcases how...Read more
In response to feedback, high-income households can reduce their energy use to a larger degree than low-income households (17% vs 3% reduction). This and other insights were gained by two rapid reviews into research, both Australian and International, on digital services and...Read more
This Expert Group Report provides recommendations on how to perform studies of wind and solar PV integration. It is based on more than 10 years of work within the International Energy Agency Wind Technology Collaboration Programme (IEA Wind TCP) Task 25: Design and Operation of Power Systems with Large Amounts of Wind Power and the IEA Photovoltaic Power System Programme (PVPS) TCP Task 14: High Penetration of PV Systems in Electricity Grids.
Most energy efficiency programs target only one fuel, usually electricity or natural gas. While they achieve savings, they sometimes miss opportunities by failing to address other fuels. Dual-fuel programs, on the other hand, have the potential to save more energy, reduce program costs, and improve customer satisfaction. Yet many utilities still do not offer them because they often require collaboration with other utilities or program administrators, making them more difficult to run.
This paper is a review of the potential commercialisation and adoption pathways for a suite of energy efficiency policy-uptake modelling capabilities from the Commonwealth Scientific and Industrial Research Organisation’s (CSIRO). Common Capital undertook this review for the Cooperative Research Centre (CRC) for Low Carbon Living and CSIRO.
This report summarises the findings from Stage 1 of the Future Grid Homes project, which involved in-depth and at-home interviews with 51 Australian households in five National Energy Market (NEM) states and territories (VIC, SA, NSW, ACT and QLD).