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The COVID-19 pandemic has affected the economy of Tunisia, like that of many other countries. With electricity consumption dropping, consumption patterns changing, international fuel prices oscillating and uncertainty raging, the pandemic has affected not least the planning of investments in electricity supply. Although the government seems unlikely to revise the decarbonisation targets downwards, questions arise on whether the investments planned before the pandemic are still relevant in the changed global landscape and what effects they may have on the country's economy. In this study, we analyse post-pandemic scenarios for the electricity supply system of Tunisia with an energy-economy modelling framework, soft-linking the energy modelling tool OSeMOSYS and an open source Input-Output model. We extract insights on the cost-competitiveness of different – previously planned and new – electricity supply solutions and their impacts on job creation and loss in the entire economy. We find that renewable solutions based on solar photovoltaic remain highly competitive with gas-fired generation under different projections of gas prices and that several low-carbon and energy efficiency solutions have high potential for job creation. We also find that more ambitious investments in renewables and energy efficiency are needed to take Tunisia towards the path of deep decarbonisation.

Tracking the Maximum Power Point (MPP) of a photovoltaic (PV) array is usually an essential part of a PV system. The problem addressed by Maximum Power Point Tracking (MPPT) techniques is to find the voltage VMPP or current IMPP at which a PV array should operate to generate the maximum power output PMPP under a given temperature and irradiance. A Novel analog integrated maximum power point tracking (MPPT) chip is presented in this paper. The main task is to design and implement an integrated circuit (IC) in CMOS technology to control the MPP in PV panel. The MPPT controller can be made small enough to be integrated into the junction box, which is practical and cost effective for MPPT topology. For the design, two main steps are necessary. First, the front end step, which consists of the validation of the design by Cadence simulations. These steps are crucial since they determine the performance capability of the design. The second phase is the back end step, which consists of the design of the layout of the circuit and all necessary verifications.

A new analog technique is proposed in order to track the maximum power point (MPP) of PV panels. The proposed technique uses the well-known simple functions of electronic circuits. The proposed technique is validated by applying it to boost based off grid PV system. The simulation of the PV system was done on the circuit oriented simulator Proteus-ISIS. A good efficiency of the analog technique (more than 98%) was registered. The variation of irradiation was introduced in order to study the robustness of the proposed analog MPPT technique.

This paper proposes a new analog technique to track the Maximum Power Point (MPP) of PV panels in PV system applications. This technique use classical and simple functions of electronic circuits. An off Grid PV system was considered to apply and validate the proposed technique. The whole circuit was implemented in circuit oriented simulator Proteus-ISIS. The obtained results have shown good efficiency of the proposed analog technique (more than 98.5%). The behavior of the proposed technique with regards to irradiation variations was described. The future of this work focuses the realization of a new specific integrated circuit of the MPPT controller.