On the day of the strike, U.S. secretary of state Mike Pompeo asserted the attack was ordered by Trump to disrupt an "imminent attack" by Soleimani operatives, although subsequent reports on that rationale were mixed. On 9 January, Trump said "We did it because they were looking to blow up our embassy. We also did it for other reasons that were very obvious. Somebody died, one of our military people died. People were badly wounded just a week before." On 10 January, Trump claimed that Soleimani had been planning attacks on four U.S. embassies in the Middle East. Afterwards several members of Congress, including Mike Lee and Chris Murphy, claimed that the Trump administration had not informed them of this in the intelligence briefing on the strike. Three days after Trump's remarks, Defense Secretary Mark Esper clarified that, although "there was evidence" of a plot against the U.S. embassy in Baghdad, the president "didn't cite intelligence" about the other three embassies he mentioned, and that the president instead shared his belief that there "probably could have been" a plot against those embassies.
With the increasing levels of rooftop photovoltaic systems, the energy flow becomes 2-way. When there is more local generation than consumption, electricity is exported to the grid. However, an electricity network traditionally is not designed to deal with the 2- way energy transfer. Therefore, some technical issues may occur. For example, in Queensland Australia, more than 30% of households used rooftop PV by the end of 2017. The famous Californian 2020 duck curve appeared often for a lot of communities from 2015 onwards. An over-voltage issue may result as the electricity flows from PV households back to the network. There are solutions to manage the over voltage issue, such as regulating PV inverter power factor, new voltage and energy control equipment at the electricity distributor level, re-conducting the electricity wires, demand side management, etc. There are often limitations and costs related to these solutions.
More InfoThere is no silver bullet in electricity or energy demand and bill management, because customers (sites) have different specific situations, e.g. different comfort/convenience needs, different electricity tariffs, or different usage patterns. Electricity tariff may have a few elements, such as daily access and metering charge, energy charge (based on kWh, MWh) or peak demand charge (e.g. a price for the highest 30min energy consumption in a month). PV is a promising option for reducing energy charge when electricity price is reasonably high and continuously increasing, such as in Australia and Germany. However, for sites with peak demand charge in place, PV may be less attractive if peak demands mostly occur in the late afternoon to early evening, for example residential communities. Overall, energy investment is largely an economical decision and it is better to make investment decisions based on systematical evaluation of options in operational improvement, energy efficiency, onsite generation and energy storage.
More InfoSoleimani's killing sharply escalated tensions between the U.S. and Iran and stoked fears of a military conflict. Iranian leaders vowed revenge, while U.S. officials said they would preemptively attack any Iran-backed paramilitary groups in Iraq that they perceived as a threat. Many in the international community reacted with concern and issued statements or declarations urging restraint and diplomacy. Five days after the airstrike, Iran launched a series of missile attacks on U.S. forces based in Iraq, the first direct engagement between Iran and the U.S. since the naval battle precipitating the Vincennes incident on 3 July 1988. Following the shootdown of Ukraine International Airlines Flight 752 amidst the escalation, leaders from both countries seemed reluctant to further escalate the crisis.
More InfoSoleimani's killing sharply escalated tensions between the U.S. and Iran and stoked fears of a military conflict. Iranian leaders vowed revenge, while U.S. officials said they would preemptively attack any Iran-backed paramilitary groups in Iraq that they perceived as a threat. Many in the international community reacted with concern and issued statements or declarations urging restraint and diplomacy. Five days after the airstrike, Iran launched a series of missile attacks on U.S. forces based in Iraq, the first direct engagement between Iran and the U.S. since the naval battle precipitating the Vincennes incident on 3 July 1988. Following the shootdown of Ukraine International Airlines Flight 752 amidst the escalation, leaders from both countries seemed reluctant to further escalate the crisis.
More InfoModule performance is generally rated under standard test conditions (STC): irradiance of 1,000 W/m2, solar spectrum of AM 1.5 and module temperature at 25°C. The actual voltage and current output of the module changes as lighting, temperature and load conditions change, so there is never one specific voltage, current, or wattage at which the module operates. Performance varies depending on the time of day, amount of solar insolation, direction and tilt of modules, cloud cover, shading, state of charge, temperature, geographic location, and day of the year. The fluctuations in voltage and current can be logged with a multimeter or data logger.
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