Inspired PLC (AIM:INSE) said interim results will be "robust" with good sales momentum carried into the first half of this trading year.
The business-focused energy consultant added all four of its divisions were performing well but optimisation and ESG delivered particularly strong revenue growth.
Optimisation continues to benefit from cross-selling and a strong step up in demand, with clients focussing on the beneficial impacts of energy reduction and delivering net zero.
ESG saw what was described as another exceptional performance, with existing clients taking more services and new customers added.
Inspired remains "confident" of meeting consensus forecasts for full-year 2023 of revenue of £110.5 million and underlying profit (adjusted EBITDA) of £24.2 million.
Group net debt is also in line with management's expectations following earn-out payments, with a cash conversion ratio in excess of 80% achievable over the 12 months.
Mark Dickinson, Inspired's chief executive, commented: "Managing energy costs and ESG have now become firmly embedded as operationally and commercially critical for most businesses.
“This is creating sustained and increasing demand for Inspired's differentiated products and services.
“We head into the second half with a strong pipeline and a growing order book, underpinning our confidence for the full year and beyond."