Longi, JinkoSolar, Risen Energy, Suntech and Zheshang Development were the winners of Zhejiang Communication Investment Group’s (CICO), recent PV module tender. CICO said on Wednesday that the companies will supply 140 MW of monocrystalline solar panels with power ratings above 335 W. Hanergy Mobile Energy, a unit of Hanergy Group, has filed for bankruptcy, according to documents submitted to China’s National Enterprise Bankruptcy Information Disclosure Platform by a person by the name of Xiao Lei – likely one of the group’s creditors. A court in Beijing is now reviewing the filing. Risen Energy, Huawei and TuV Rheinland were among the companies and organizations that have joined the new 600W+ Photovoltaic Open Innovation Ecological Alliance, which was officially established on Thursday. Other participating companies include Flat Glass, Arctech Solar, Nextracker, JA Solar, Trina Solar, Datang, and Zhonghuan Semiconductor. China Huadian announced a tender this week for projects in fiscal 2020. The procurement exercise is for 2.04 GW of monocrystalline PV modules and inverters, with bids to be finalized by the end of this month.

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Researchers at the Polytechnic University of Madrid have examined the feasibility of storing power generated by rooftop solar as heat which can then be used to generate power when the sun isn’t shining – ‘power-to-heat-to-power storage,’ or PHPS technology. The household system in Madrid studied by the scientists included a highly efficient, thermally-driven heat pump and solar thermal collectors. The ‘trigeneration’ system, or combined cooling, heating and power (CCHP) technology includes two types of heat store: a low or medium-grade one for domestic hot water and space heating and a high-grade heat store for combined heat and power generation. The heat generated in the former can be used for cooling as well as heating demand. A reference case was based on grid power consumption plus an electrically-driven heat pump for cooling. Factors The Madrid group said factors including the cost of grid power and fuel and the price and productivity of PV arrays would influence the optimal size of trigeneration systems. The researchers estimated a €900-1,200/kW cost for PV systems and based their estimate of PHPS profitability on the resulting electricity savings. A domestic power-to-heat-to-power storage system could drive grid electricity savings of more than 70%, according to the researchers, but would require 12-15 years to pay for itself. “This holds true even when the heat-to-power conversion [efficiency] is moderately low (20-30%), provided that the economic conditions are favorable,” the researchers stated. The Madrid group conceded heat losses in the high-temperature thermal store would mean a PHPS system would mean a solar power self-consumption rate of only 40-60%. “Possible ways of minimizing these losses include the development of novel, ultra-dense heat stores at moderately low temperatures, or more advanced thermal insulation [systems],” added the researchers. The group’s findings are described in the study Techno-economic analysis of solar PV power-to-heat-to-power storage and trigeneration in the residential sector,published in Applied Energy and on the Science Direct website.

Frompv magazine Germany. Interest in subsidy-free power purchase agreements (PPAs) for photovoltaic and wind power plants in Europe really took off last year – a development confirmed by an updated version of theStatus Quo: Market Parity of PV and Onshore Wind in Europereport published by German consultancy Enervis Energy Advisors. Analysts who crunched the data from 25 nations calculated a 21 GW pipeline of projects was being developed without subsidy in Europe at the end of 2019. Spain continued to lead the way, according to the Enervis report, with 4.39 GW of unsubsidized-PPA-driven projects announced last year. Italy followed, with 1.91 GW, ahead of Germany, with 1.05 GW. Demand also rose, however, in Portugal (444 MW), Denmark (338 MW) and France (158 MW) and Enervis predicted southern European markets will continue to be fertile territory for subsidy-free solar PPAs despite bureaucratic hurdles. For wind farms – on and offshore – north and north west Europe continue to be the focus. Wholesale prices Although the historic rise in wholesale electric prices in the EU halted last year – and has plunged during Covid-19 shutdowns – Enervis noted solar and wind power could be generated for up to €20/MW cheaper than market prices. With the coal withdrawal plans announced by some European nations expected to buttress the wholesale energy price in the medium term, according to Enervis, ever cheaper solar and wind projects will continue to make subsidy-free PPAs an attractive option. The updated report states the renewables business case will stand up even in the face of gas prices which fell 39% in 2019, year-on-year, and dragged down the wholesale electricity price 16% despite a 56% annual rise in the cost of CO2certificates. In terms of crowding out rival renewables technologies, instead of fossil fuels, the highest ‘cannibalization rate’ observed for solar last year was 12%, in Sicily. In Germany, onshore wind saw a 14% rate. Those rates could rise as renewables penetrate deeper into European grids, according to Enervis, which highlighted fluctuation in the price of fossil fuel-fired electricity as an unpredictable variable, which could be counterbalanced by higher CO2prices; less baseload generation; and flexible demand and storage shoring up the energy price.

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