Search

With its abundance of renewable energy potentials, not only for hydropower and bioenergy, but also for wind and solar, Brazil provides good prospects for a carbon neutral energy system. The role of an enhanced coupling of the power, heat and transport sectors in such systems is not yet fully understood. This paper analyses the least-cost composition and operation of a fully renewable power supply system as part of a carbon neutral energy supply in Brazil. It relies on the application of the high-resolution energy system model REMix. Our analysis reveals that the expansion of wind and solar power is more cost-efficient than the construction of additional hydroelectric plants. This is favoured because the existing hydroelectric plants offer large capacity of dispatchable power to compensate for fluctuations, and thus no additional storage is necessary. Furthermore, the REMix analysis indicates that varying shares of solar and wind power technologies as well as the spatial distribution of power generation have only a small influence on supply costs. This implies that the transformation strategy in Brazil can be primarily based on other criteria such as regional development, public acceptance, environmental impact or industrial policy without major impacts on system costs. [ABSTRACT FROM AUTHOR]

One of the technologies that stand out as an alternative to provide additional flexibility to power systems with large penetration of variable renewable energy (VRE), especially for regions with high direct normal irradiation (DNI), is concentrated solar power (CSP) plants coupled to thermal energy storage (TES) and back-up (BUS) systems. Brazil can develop this technology domestically, especially in its Northeast region, where most of VRE capacity is being deployed and where lies most of the CSP potential of the country. This work applies the Capacity Expansion Model REMix-CEM, which allows considering dispatch constraints of thermal power plants in long-term capacity expansion optimization. REMix-CEM calculates the optimal CSP plant configuration and its dispatch strategy from a central planning perspective. Results showed that the hybridization of CSP plants with jurema-preta biomass (CSP-BIO) becomes a least-cost option for Brazil by 2040. CSP-BIO contributes to the Northeast power system by regularizing the energy imbalance that results from the large-scale VRE expansion along with conventional inflexible power plants. CSP-BIO plants are able to increase frequency response and operational reserve services and can provide the required additional flexibility that the Northeast power system of Brazil will require into the future. [ABSTRACT FROM AUTHOR]

Brazil is looking for innovative alternatives to supply the country's increasing electricity demand and provide flexibility to cope with higher shares of variable renewable energy (VRE). Concentrated solar power (CSP) can help solving this double challenge. Three energy planning tools, namely MESSAGE-Brazil, TIMES-TiPs-B and REMIX-CEM-B, have been combined to analyze the opportunities that CSP plants offer to the power system and to the wider energy system of the country. This work shows that CSP can be a cost-effective option under stringent mitigation scenarios. CSP can provide firm energy and dispatchable capacity in the Northeast region of Brazil, optimally complementing wind and PV generations. Moreover, CSP can offer additional flexibility to the Northeast power system of the country, especially during winter, when the hydrological period is dryer. Results show synergies between CSP and other power supply technologies with small cost differences between the baseline and CSP-forced scenarios. [ABSTRACT FROM AUTHOR]

Abstract: This study analyses the Concentrated Solar Power (CSP) potential in Brazil and evaluates the impact caused by a large-scale integration of this alternative into the Brazilian electricity system in the long term (horizon 2040). Four types of CSP plants with parabolic troughs (simple plants, plants with hybridization and plants with thermal energy storage) were simulated at two sites: Bom Jesus da Lapa and Campo Grande. Then, the main parameters obtained for each plant were expanded to other suitable Brazilian sites, as inputs in an optimization model for the expansion of the country's electric power grid. Findings indicate that the least-cost expansion of the Brazilian electricity system should be based on hydroelectric and thermoelectric plants fueled by natural gas and sugarcane bagasse. Hence, in the base scenario CSP plants would not be chosen. However, in an alternative scenario, specific auctions for CSP can be adopted. In this case, the first solar plants would be introduced in 2020 in place of natural gas-fueled thermoelectric plants, and from 2030 on, hydroelectric plants would cease to be installed. This alternative scenario would be about 144 billion dollars dearer than the base. [Copyright &y& Elsevier]

Renewable Energy development can generate co-benefits, such as jobs, income, and economic output. Concentrated Solar Power technology is a key technology for the electric power sector decarbonization as it generates dispatchable electricity, while also creates direct, indirect and induced jobs. Using an innovative methodology, this study estimates the socioeconomic co-benefits of Concentrated Solar Power deployment in a developing country, where most of its potential is located in sites with low-income population. First, local content scenarios were defined based on the assessment of the installed and idle capacities of the country's industry (at the national and local levels) throughout the Concentrated Solar Power value chain. Then, these scenarios are applied to an interregional Input-Output model to estimate direct, indirect and induced jobs, income and economic output generated by the deployment of a 300 MW solar thermal programme. Findings refer to the regional and national levels, emphasizing that the analysis of Concentrated Solar Power impacts should focus on the mesoscale (regional level instead of national levels only). Depending on the local content scenario, findings show that the proposed Concentrated Solar Power development could generate between 45.40 and 61.21 jobs (direct, indirect and induced) per MW installed, and 0.94 to 1.29 million of United States Dollar (income) per MW installed. • Assessment of Brazil's local industry through the industrial capabilities for developing CSP plants in the semi-arid region. • Estimation of socioeconomic co-benefits using a regionalized Input-Output Model. • 24.33–30.77 jobs/MWe, 0.45–0.58 USD/MWe of income and 1.64–2.12 USD/MWe of output generated in Bahia state. • 21.07–30.38 jobs/MWe, 0.49–0.71 USD/MWe of income and 1.61–2.37 USD/MWe of output generated in the rest of Brazil. [ABSTRACT FROM AUTHOR]