This paper recommends the integration of solar thermal collectors (STCs) into an isolated small village power system (VPS) for improved power generation. Additionally, the paper suggests different techniques for increasing the concentration ratio and the collector efficiency of the STC. Finally, the paper also proposes a rate of change of frequency (ROCOF) control scheme for the VPS integrating the STCs. The VPS considered in the paper generates power from diesel as well as from the STCs. The design of the STC includes all the factors to be considered for improving the concentration ratio and the collection efficiency. The STC uses an annual sun-tracking technique to capture the maximum amount of sunlight. Due to the integration of the STCs into the system, the frequency response of PS suffers due to the poor system inertia and uncertainty of power output from STCs during night or cloudy weather. Therefore, in the proposed frequency control scheme, the VPS uses a flywheel energy storage (FWES) for storage or supply of power according to the requirement as well as for frequency regulation of the VPS model to maintain the frequency and ROCOF of the considered VPS within the allowed limits, and also to safeguard the stability of the system. The response of the mentioned VPS using the proposed ROCOF-control scheme has been inspected under the influence of different weather conditions and some unpredictable variations in load.