Energy Audits
Metered assessment of where consumption actually goes, separating fixed load from behaviour and equipment inefficiency.
Retrograd Energy
Energy decisions, modelled honestly.
Houston-based energy advisory for commercial and industrial operators weighing renewables against the grid — with the numbers run both ways.
Start a ConversationAbout Us
Energy is one of the few large costs where the right answer changes month to month. Tariffs shift, incentives expire, and equipment that made sense three years ago may now be the most expensive thing on site.
Retrograd Energy was founded in Houston to give operators a clear read on that moving target. Henry Callahan built the practice around metered evidence rather than manufacturer projections — a distinction that matters more than it should in this industry.
We work with manufacturing, cold storage, and commercial property clients across Texas and the Gulf Coast. We install nothing and accept no supplier commissions, so when we recommend staying on the grid for another two years, that recommendation costs us money.
Our Expertise
Six areas where we do our most useful work for Houston businesses.
Renewable Feasibility
Site-specific modelling of solar, storage and wind against your real load profile and tariff structure.
Procurement Advisory
Independent guidance through supplier contracts and hedging in a deregulated market that rewards attention.
Grid & Interconnection
Practical navigation of interconnection studies, timelines and the costs that surface late in the process.
Storage Economics
Battery sizing driven by demand charges and arbitrage opportunity rather than headline capacity figures.
Compliance & Reporting
Emissions accounting and regulatory reporting built to withstand scrutiny from auditors and investors alike.
What That Looks Like
Figures from our own engagements, not industry averages.
11–34%typical load reduction identified in a first audit
6–9 yrsrealistic payback on the solar projects we approve
100%of modelling based on metered site data, not estimates
0supplier commissions accepted, ever
Contact Us
Tell us what you're weighing up. We'll reply within one business day.