A recent report states that for a few roof-top stars comes, a tariff of Rs three per unit has been quoted, that is the same because of the monetary value of power from the coal-fired plants of NTPC. The report additionally offers the impression that Reliant Energy Rates goes to be cheaper than power generated by thermal power plants. whereas the value of solar energy has indeed been coming back down, it’s necessary to grasp sure aspects of solar energy, notably relating to its impact on the general price of power provide, thus on be ready to take knowing choices while not being anxious by some simple facts.
A distinctive characteristic of solar energy is that it may be generated solely throughout the mid-day hours once the sun is up within the sky. It so can’t facilitate in job to the need for electrical power throughout evening hours, once the ability demand peaks. As we tend to move towards ‘electricity for all’, the ability demand throughout evening hours would persevere rising, and standard generating capability would need continued sweetening, regardless of the installation of the star capability. In fact, star capability shouldn’t be counted once understanding the generating capability demand for meeting the projected peak demand.
How it Helps:
What the star generating capability (whether roof-top or large-scale) really provides is power throughout mid-day hours (say 8 am to 4 pm), to exchange the same quantity of power from thermal power plants throughout those self-same hours. This directly reduces (i) the quantity of coal burnt within the power plants (whose day-time generation is curtailed), (ii) quantity of ash made by these plants, (iii) greenhouse emission, and (iv) the necessities of coal mining, import and transport, and of ash disposal. These square measure all most useful from an environmental angle, and square measure the explanations for the worldwide push for star (and wind) power generation.
Sometimes, considerations square measure voiced that the increasing star capability would cause the Plant ratio (PLF) of the thermal plants to fall (because the latter would ought to essentially back off throughout mid-day hours once star plants would be feeding power into the grid), destabilize their operation and upset their political economy. These considerations don’t seem to be valid. FTO isn’t the proper criterion for deciding a plant’s performance.
Backing down, and ramping up the thermal generation once star generation falls within the early evening hours, would ordinarily be at intervals the plants’ performance capability. it’d solely need the plant operators to be alert, and to require the mandatory preventive/corrective actions to make sure that their machines don’t seem to be over-stressed. The business downside may be simply overcome by adopting a two-part tariff (comprising of capability charge and energy charge) for the thermal plants, whereby any revenue reduction on backing down is neutralized by an identical reduction in the price of fuel consumed.
All Central thermal stations have already got this tariff format, and wouldn’t suffer on account of backing down. Typically, the current energy charge rates of thermal plants, supported their several fuel price, square measure within the vary of Rs one.50 to two per kWh sent out, whereas the entire monetary value (including the fixed costs, that is recovered through the capability charge) is within the vary of Rs three to four per unit. Thermal stations still on single-part tariff have merely to vary over to two-part tariff to avoid any adverse result on their political economy.