How to source a generator or power solution

Powering your passion, wherever you are

If you're trading from a van, stall, or any location without access to mains electricity, a generator is essential. The most important step is to calculate the total power (in watts) all your equipment needs to run simultaneously. Once you have this number, you can choose a generator that provides slightly more power, runs quietly enough for your trading environment, and is portable enough for you to handle.

Step 1: Calculate your power needs

Before you even look at generators, you need to know how much power you actually need. This prevents you from buying a unit that's too weak to run your gear or wasting money on one that's far too powerful.

1. List your equipment: Write down every single electrical item you'll use at the same time. This could include a coffee machine, grinder, fridge, lights, card machine, laptop, or water pump.
2. Find the wattage: Look for a label on each appliance that shows its power consumption in watts (W). Some may show kilowatts (kW), where 1kW is equal to 1000W.
3. Add it all up: Sum the wattage of all the items you'll be using at once.
4. Add a buffer: It's crucial to add a safety margin of at least 20-25% to your total. This covers the initial surge of power some appliances need to start up and ensures you aren't running the generator at its absolute maximum all day.

For example: A coffee machine (2000W) + a grinder (350W) + a small fridge (150W) = 2500W. Adding a 25% buffer (625W) means you should look for a generator with a 'continuous' running power of at least 3125W.

Step 2: Choose the right type of generator

Not all generators are created equal. The main choice for a small business is between a modern 'inverter' generator and a traditional 'conventional' one. For most public-facing businesses, an inverter is the way to go.

FeatureInverter GeneratorConventional GeneratorNoise LevelVery QuietLoudPower Quality'Clean' power, safe for electronicsCan damage sensitive gearFuel EfficiencyExcellentAveragePriceHigherLower

For most food trucks, coffee vans, or market stalls using electronic tills and card machines, an inverter generator is the best choice. The quieter operation is a huge bonus that won't put off customers or annoy neighbouring traders.

Step 3: Key features to consider

• Power Output: Look for the 'continuous' or 'running' wattage, not just the 'peak' or 'starting' wattage. This number should be higher than your calculated requirement.
• Noise Level: This is measured in decibels (dB). A generator running at 50-60dB is about the level of a normal conversation and is ideal for most trading situations. Many markets and event organisers have strict noise limits, so check their rules first.
• Fuel Type: Most portable generators run on petrol. They are easy to refuel, but you'll need to transport and store the fuel safely. Dual-fuel models that can also run on LPG gas are becoming more popular as they can be cleaner and more convenient.
• Portability: Consider the generator's weight and whether it has wheels and a handle. Remember, you'll be lifting this in and out of your vehicle regularly.

A quick word on safety

Never, ever run a generator inside a building, van, or enclosed space. They produce carbon monoxide, which is a lethal gas. Always operate it outdoors in a well-ventilated area, away from customers and any flammable materials.