All Greenpower classes use a 24V, 240W Framco motor and pairs of 12V REC36-12 or YPC33-12
AGM batteries. These batteries are selected to be reasonably easy to lift, leak-proof and their discharge characteristics determine how fast the cars can go. The motor and batteries are sealed and cannot be modified.
Formula Goblin The Goblin Kit Car is offered by as a suitable platform for primary school children aged 9–11. The rules state only this kit may be used which ensures safety for all those competing. The kit includes all parts and components required to build a complete car - except for the bodywork which is left to the creativity of the team. The motor and battery, together with comprehensive instructions are included. Only basic hand tools are required to assemble the kit, which can be dismantled at the end of the season and reused by another group. Race days consist of many events, including that of a sprint race. The new G2 chassis was released in the late 2010s by Greenpower to replace the old G1 'tubular-style' cars. The kit is purchased from Greenpower and costs (2019)
£1350.
Formula 24 IET Formula 24 (F24) is the main racing category - 258 cars completed at least one competitive lap in 2018. It is open to 11- to 16-year-olds. Since then, the competition has grown to involve over 500 different schools, each hoping to race their way into the final. The rules are built around the standard batteries and motor along with some safety-based rules. These are designed to be relatively open-ended and with room for innovation, leading to a huge variation in how the cars look. There is a kit car available to allow a simplified entry. Up to 2013, F24 races consisted of a 4-hour endurance race, and teams could use six batteries in that time (80 minutes per pair of batteries). A minimum of five drivers were required to drive for a maximum of 90 minutes each. Typical average speeds were around 20-30 mph. However, the rules were modified for the 2014 season to change the F24 race into a sprint style event. Teams are only allowed to use one pair of batteries per 90 minute race, with two races during the day. There must be a minimum of three drivers per race. Prices cover a wide range as different teams use different designs, materials and techniques. The highest costing car doesn't necessarily give the best results. Top cars have ranged from the price of £1200 (excluding batteries and motor) up to approximately £9000. The motor and six batteries cost a total of £404 + VAT, while the kit car is £2750 + VAT (October 2018, includes motor, batteries, team registration and entry to the first race) The technology and attention to detail evident in a top level F24/F24+ car should not be under-estimated, equivalent energy consumption of >3000mpge is commonplace, as such they can be regarded as being the most efficient racing cars anywhere in the world by a considerable margin.
Formula 24-Kit Car Starting in 2014 an additional award has been given to the best kit car, this is unlike the main F24 championship in that the best result is taken from either of the two races per event as opposed to individual awards for each race. The inaugural kit car international championship was won by Megazord from Bristol Grammar School, with the chassis number 002 it is the first kit car ever sold.
Formula 24+ IET Formula 24+ is for young people aged 16 – 25 and is all about designing and building an electric car with technical regulations that are much the same as those for IET F24. Since 2013, the race has been incorporated with the Corporate Challenge (at some events where companies join the students racing). Up to 2013, 24+ races lasted 90 minutes while using four batteries (45 minute per pair of batteries) leading to significantly higher speeds than F24. Average speeds range from 25 mph to nearly 40 mph (depending on the car and driver). Most teams only used one driver, but some would change during the battery pit stop. The new rules in 2014 shortened this race to 60 minutes, with each race using only one pair of batteries. A minimum of one driver is required.
Participation Any group of young people that fall into the age category can enter the Greenpower competition as a team (including units sponsored by private companies or public organizations such as primary schools and colleges, Institutes of secondary education, and also older people in youth groups, and universities etc.).
Greenpower USA Foundation A variant of Greenpower also exists in the United States. The Greenpower USA Foundation started as a pilot program in 2011 and officially started in 2014. They are located in Huntsville, Alabama. Like the Greenpower Education Trust, Greenpower USA has a Goblin, F24, and F24+ category. Greenpower USA has its own national championship every year at the
Talladega Superspeedway. ==Races==